./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f7751f-875c-453b-8bc8-8bde387ec6b2/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f7751f-875c-453b-8bc8-8bde387ec6b2/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f7751f-875c-453b-8bc8-8bde387ec6b2/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f7751f-875c-453b-8bc8-8bde387ec6b2/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f7751f-875c-453b-8bc8-8bde387ec6b2/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f7751f-875c-453b-8bc8-8bde387ec6b2/bin/utaipan-I9t0OCRTmS --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 92fce7e8733fef6ba8e1d7d5b12f8bb98a90f9164efa69e5285fd66b003407a0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:00:55,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:00:55,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:00:55,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:00:55,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:00:55,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:00:55,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:00:55,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:00:55,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:00:55,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:00:55,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:00:55,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:00:55,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:00:55,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:00:55,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:00:55,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:00:55,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:00:55,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:00:55,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:00:55,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:00:55,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:00:55,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:00:55,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:00:55,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:00:55,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:00:55,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:00:55,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:00:55,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:00:55,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:00:55,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:00:55,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:00:55,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:00:55,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:00:55,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:00:55,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:00:55,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:00:55,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:00:55,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:00:55,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:00:55,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:00:55,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:00:55,486 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f7751f-875c-453b-8bc8-8bde387ec6b2/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:00:55,541 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:00:55,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:00:55,542 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:00:55,542 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:00:55,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:00:55,543 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:00:55,543 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:00:55,544 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:00:55,544 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:00:55,544 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:00:55,545 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:00:55,546 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:00:55,546 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:00:55,546 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:00:55,546 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:00:55,547 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:00:55,547 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:00:55,547 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:00:55,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:00:55,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:00:55,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:00:55,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:00:55,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:00:55,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:00:55,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:00:55,551 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:00:55,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:00:55,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:00:55,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:00:55,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:00:55,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:00:55,553 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:00:55,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:00:55,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:00:55,554 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:00:55,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:00:55,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:00:55,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:00:55,555 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f7751f-875c-453b-8bc8-8bde387ec6b2/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f7751f-875c-453b-8bc8-8bde387ec6b2/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92fce7e8733fef6ba8e1d7d5b12f8bb98a90f9164efa69e5285fd66b003407a0 [2022-11-19 08:00:55,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:00:55,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:00:55,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:00:55,827 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:00:55,828 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:00:55,829 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f7751f-875c-453b-8bc8-8bde387ec6b2/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2022-11-19 08:00:55,909 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f7751f-875c-453b-8bc8-8bde387ec6b2/bin/utaipan-I9t0OCRTmS/data/d2ceb7242/3c47fc0d83964ff49023fde531fc4110/FLAGcbbab1c69 [2022-11-19 08:00:57,018 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:00:57,018 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f7751f-875c-453b-8bc8-8bde387ec6b2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2022-11-19 08:00:57,109 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f7751f-875c-453b-8bc8-8bde387ec6b2/bin/utaipan-I9t0OCRTmS/data/d2ceb7242/3c47fc0d83964ff49023fde531fc4110/FLAGcbbab1c69 [2022-11-19 08:00:57,357 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f7751f-875c-453b-8bc8-8bde387ec6b2/bin/utaipan-I9t0OCRTmS/data/d2ceb7242/3c47fc0d83964ff49023fde531fc4110 [2022-11-19 08:00:57,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:00:57,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:00:57,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:00:57,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:00:57,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:00:57,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:57" (1/1) ... [2022-11-19 08:00:57,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27509400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:57, skipping insertion in model container [2022-11-19 08:00:57,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:57" (1/1) ... [2022-11-19 08:00:57,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:00:57,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:01:04,616 WARN L234 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_f0f7751f-875c-453b-8bc8-8bde387ec6b2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622479,622492] [2022-11-19 08:01:04,627 WARN L234 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_f0f7751f-875c-453b-8bc8-8bde387ec6b2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622648,622661] [2022-11-19 08:01:04,627 WARN L234 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_f0f7751f-875c-453b-8bc8-8bde387ec6b2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622815,622828] [2022-11-19 08:01:04,628 WARN L234 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_f0f7751f-875c-453b-8bc8-8bde387ec6b2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622983,622996] [2022-11-19 08:01:04,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:01:04,742 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:01:05,569 WARN L234 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_f0f7751f-875c-453b-8bc8-8bde387ec6b2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622479,622492] [2022-11-19 08:01:05,570 WARN L234 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_f0f7751f-875c-453b-8bc8-8bde387ec6b2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622648,622661] [2022-11-19 08:01:05,570 WARN L234 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_f0f7751f-875c-453b-8bc8-8bde387ec6b2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622815,622828] [2022-11-19 08:01:05,571 WARN L234 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_f0f7751f-875c-453b-8bc8-8bde387ec6b2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622983,622996] [2022-11-19 08:01:05,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:01:05,907 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:01:05,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:05 WrapperNode [2022-11-19 08:01:05,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:01:05,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:01:05,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:01:05,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:01:05,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:05" (1/1) ... [2022-11-19 08:01:06,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:05" (1/1) ... [2022-11-19 08:01:06,539 INFO L138 Inliner]: procedures = 780, calls = 5954, calls flagged for inlining = 431, calls inlined = 378, statements flattened = 14583 [2022-11-19 08:01:06,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:01:06,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:01:06,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:01:06,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:01:06,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:05" (1/1) ... [2022-11-19 08:01:06,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:05" (1/1) ... [2022-11-19 08:01:06,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:05" (1/1) ... [2022-11-19 08:01:06,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:05" (1/1) ... [2022-11-19 08:01:07,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:05" (1/1) ... [2022-11-19 08:01:07,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:05" (1/1) ... [2022-11-19 08:01:07,154 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:05" (1/1) ... [2022-11-19 08:01:07,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:05" (1/1) ... [2022-11-19 08:01:07,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:01:07,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:01:07,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:01:07,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:01:07,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:05" (1/1) ... [2022-11-19 08:01:07,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:01:07,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f7751f-875c-453b-8bc8-8bde387ec6b2/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:01:07,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f7751f-875c-453b-8bc8-8bde387ec6b2/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:01:07,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f7751f-875c-453b-8bc8-8bde387ec6b2/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:01:07,347 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_sge_intr_msix [2022-11-19 08:01:07,347 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_sge_intr_msix [2022-11-19 08:01:07,347 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-19 08:01:07,347 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-19 08:01:07,347 INFO L130 BoogieDeclarations]: Found specification of procedure seq_putc [2022-11-19 08:01:07,348 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_putc [2022-11-19 08:01:07,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 08:01:07,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 08:01:07,348 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 08:01:07,348 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 08:01:07,348 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 08:01:07,348 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 08:01:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup_debugfs [2022-11-19 08:01:07,349 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup_debugfs [2022-11-19 08:01:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-19 08:01:07,349 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-19 08:01:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_sw_desc [2022-11-19 08:01:07,349 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_sw_desc [2022-11-19 08:01:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure is_t4 [2022-11-19 08:01:07,350 INFO L138 BoogieDeclarations]: Found implementation of procedure is_t4 [2022-11-19 08:01:07,350 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 08:01:07,350 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 08:01:07,350 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 08:01:07,350 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 08:01:07,350 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-19 08:01:07,351 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-19 08:01:07,351 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2022-11-19 08:01:07,351 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2022-11-19 08:01:07,351 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 08:01:07,351 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 08:01:07,351 INFO L130 BoogieDeclarations]: Found specification of procedure is_new_response [2022-11-19 08:01:07,351 INFO L138 BoogieDeclarations]: Found implementation of procedure is_new_response [2022-11-19 08:01:07,352 INFO L130 BoogieDeclarations]: Found specification of procedure __napi_schedule [2022-11-19 08:01:07,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __napi_schedule [2022-11-19 08:01:07,352 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 08:01:07,352 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 08:01:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure qenable [2022-11-19 08:01:07,353 INFO L138 BoogieDeclarations]: Found implementation of procedure qenable [2022-11-19 08:01:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2022-11-19 08:01:07,353 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2022-11-19 08:01:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure is_10g_port [2022-11-19 08:01:07,354 INFO L138 BoogieDeclarations]: Found implementation of procedure is_10g_port [2022-11-19 08:01:07,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 08:01:07,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 08:01:07,355 INFO L130 BoogieDeclarations]: Found specification of procedure seq_open [2022-11-19 08:01:07,355 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_open [2022-11-19 08:01:07,356 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header_len [2022-11-19 08:01:07,356 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header_len [2022-11-19 08:01:07,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:01:07,356 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_get_port_stats [2022-11-19 08:01:07,357 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_get_port_stats [2022-11-19 08:01:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-19 08:01:07,357 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-19 08:01:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure free_tx_desc [2022-11-19 08:01:07,358 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tx_desc [2022-11-19 08:01:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_wr_mbox_core [2022-11-19 08:01:07,358 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_wr_mbox_core [2022-11-19 08:01:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_offset [2022-11-19 08:01:07,358 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_offset [2022-11-19 08:01:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure netdev2adap [2022-11-19 08:01:07,359 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev2adap [2022-11-19 08:01:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 08:01:07,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 08:01:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-19 08:01:07,359 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-19 08:01:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-19 08:01:07,360 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-19 08:01:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure core_ticks_to_us [2022-11-19 08:01:07,360 INFO L138 BoogieDeclarations]: Found implementation of procedure core_ticks_to_us [2022-11-19 08:01:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 08:01:07,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 08:01:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:01:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-19 08:01:07,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-19 08:01:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-19 08:01:07,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-19 08:01:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2022-11-19 08:01:07,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2022-11-19 08:01:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-19 08:01:07,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-19 08:01:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-19 08:01:07,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-19 08:01:07,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:01:07,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 08:01:07,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 08:01:07,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:01:07,365 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 08:01:07,366 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2022-11-19 08:01:07,366 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2022-11-19 08:01:07,366 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_change_mac [2022-11-19 08:01:07,366 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_change_mac [2022-11-19 08:01:07,366 INFO L130 BoogieDeclarations]: Found specification of procedure fl_starving [2022-11-19 08:01:07,366 INFO L138 BoogieDeclarations]: Found implementation of procedure fl_starving [2022-11-19 08:01:07,366 INFO L130 BoogieDeclarations]: Found specification of procedure adapter_down [2022-11-19 08:01:07,367 INFO L138 BoogieDeclarations]: Found implementation of procedure adapter_down [2022-11-19 08:01:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-19 08:01:07,367 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-19 08:01:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure netdev2pinfo [2022-11-19 08:01:07,367 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev2pinfo [2022-11-19 08:01:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_free_vi [2022-11-19 08:01:07,368 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_free_vi [2022-11-19 08:01:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_free_sge_resources [2022-11-19 08:01:07,368 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_free_sge_resources [2022-11-19 08:01:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2022-11-19 08:01:07,369 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2022-11-19 08:01:07,369 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 08:01:07,370 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 08:01:07,370 INFO L130 BoogieDeclarations]: Found specification of procedure t4_read_reg [2022-11-19 08:01:07,371 INFO L138 BoogieDeclarations]: Found implementation of procedure t4_read_reg [2022-11-19 08:01:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-19 08:01:07,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-19 08:01:07,373 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 08:01:07,373 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 08:01:07,373 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule_prep [2022-11-19 08:01:07,380 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule_prep [2022-11-19 08:01:07,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:01:07,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:01:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 08:01:07,381 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 08:01:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure is_eth_imm [2022-11-19 08:01:07,381 INFO L138 BoogieDeclarations]: Found implementation of procedure is_eth_imm [2022-11-19 08:01:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 08:01:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-19 08:01:07,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-19 08:01:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2022-11-19 08:01:07,382 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2022-11-19 08:01:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 08:01:07,382 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 08:01:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure is_buf_mapped [2022-11-19 08:01:07,382 INFO L138 BoogieDeclarations]: Found implementation of procedure is_buf_mapped [2022-11-19 08:01:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-19 08:01:07,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-19 08:01:07,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-19 08:01:07,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 08:01:07,383 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 08:01:07,383 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-19 08:01:07,383 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-19 08:01:07,383 INFO L130 BoogieDeclarations]: Found specification of procedure reg_block_dump [2022-11-19 08:01:07,383 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_block_dump [2022-11-19 08:01:07,384 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-19 08:01:07,384 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-19 08:01:07,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:01:07,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:01:07,384 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2022-11-19 08:01:07,384 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2022-11-19 08:01:07,384 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_pci_shutdown [2022-11-19 08:01:07,385 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_pci_shutdown [2022-11-19 08:01:07,385 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-19 08:01:07,385 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-19 08:01:07,385 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 08:01:07,385 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 08:01:07,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 08:01:07,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 08:01:07,385 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-19 08:01:07,386 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-19 08:01:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-19 08:01:07,386 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-19 08:01:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_set_rxmode [2022-11-19 08:01:07,386 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_set_rxmode [2022-11-19 08:01:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 08:01:07,386 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 08:01:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-11-19 08:01:07,387 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-11-19 08:01:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure get_buf_addr [2022-11-19 08:01:07,387 INFO L138 BoogieDeclarations]: Found implementation of procedure get_buf_addr [2022-11-19 08:01:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_wr_mbox [2022-11-19 08:01:07,387 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_wr_mbox [2022-11-19 08:01:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:01:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:01:07,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:01:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure interfaces_get_idx [2022-11-19 08:01:07,388 INFO L138 BoogieDeclarations]: Found implementation of procedure interfaces_get_idx [2022-11-19 08:01:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-19 08:01:07,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-19 08:01:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_pci_remove [2022-11-19 08:01:07,388 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_pci_remove [2022-11-19 08:01:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2022-11-19 08:01:07,389 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2022-11-19 08:01:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_set_params [2022-11-19 08:01:07,391 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_set_params [2022-11-19 08:01:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-19 08:01:07,391 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-19 08:01:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 08:01:07,391 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 08:01:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-19 08:01:07,391 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-19 08:01:07,392 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_get_regs_len [2022-11-19 08:01:07,392 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_get_regs_len [2022-11-19 08:01:07,392 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_open [2022-11-19 08:01:07,392 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_open [2022-11-19 08:01:07,392 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-19 08:01:07,392 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-19 08:01:07,392 INFO L130 BoogieDeclarations]: Found specification of procedure refill_fl [2022-11-19 08:01:07,392 INFO L138 BoogieDeclarations]: Found implementation of procedure refill_fl [2022-11-19 08:01:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:01:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:01:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure free_rx_bufs [2022-11-19 08:01:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rx_bufs [2022-11-19 08:01:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-19 08:01:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-19 08:01:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2022-11-19 08:01:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2022-11-19 08:01:07,394 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-19 08:01:07,394 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-19 08:01:07,394 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_query_params [2022-11-19 08:01:07,394 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_query_params [2022-11-19 08:01:07,394 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 08:01:07,394 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 08:01:07,394 INFO L130 BoogieDeclarations]: Found specification of procedure poison_buf [2022-11-19 08:01:07,395 INFO L138 BoogieDeclarations]: Found implementation of procedure poison_buf [2022-11-19 08:01:07,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 08:01:07,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 08:01:07,395 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-19 08:01:07,395 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-19 08:01:07,395 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 08:01:07,395 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 08:01:07,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 08:01:07,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 08:01:07,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:01:07,396 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2022-11-19 08:01:07,396 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2022-11-19 08:01:07,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2022-11-19 08:01:07,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2022-11-19 08:01:07,396 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 08:01:07,396 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 08:01:07,397 INFO L130 BoogieDeclarations]: Found specification of procedure sge_qstats_entries [2022-11-19 08:01:07,397 INFO L138 BoogieDeclarations]: Found implementation of procedure sge_qstats_entries [2022-11-19 08:01:07,397 INFO L130 BoogieDeclarations]: Found specification of procedure fl_cap [2022-11-19 08:01:07,397 INFO L138 BoogieDeclarations]: Found implementation of procedure fl_cap [2022-11-19 08:01:07,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 08:01:07,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-19 08:01:07,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-19 08:01:07,397 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 08:01:07,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 08:01:07,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 08:01:07,401 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_ring [2022-11-19 08:01:07,402 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_ring [2022-11-19 08:01:07,402 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 08:01:07,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 08:01:07,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 08:01:07,402 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 08:01:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_alloc_mac_filt [2022-11-19 08:01:07,404 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_alloc_mac_filt [2022-11-19 08:01:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-19 08:01:07,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-19 08:01:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 08:01:07,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 08:01:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2022-11-19 08:01:07,405 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2022-11-19 08:01:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_set_rxmode [2022-11-19 08:01:07,405 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_set_rxmode [2022-11-19 08:01:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_cxgb4vf_module_exit_22_2 [2022-11-19 08:01:07,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_cxgb4vf_module_exit_22_2 [2022-11-19 08:01:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure init_rspq [2022-11-19 08:01:07,405 INFO L138 BoogieDeclarations]: Found implementation of procedure init_rspq [2022-11-19 08:01:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure adap2pinfo [2022-11-19 08:01:07,406 INFO L138 BoogieDeclarations]: Found implementation of procedure adap2pinfo [2022-11-19 08:01:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2022-11-19 08:01:07,406 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2022-11-19 08:01:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_stop [2022-11-19 08:01:07,406 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_stop [2022-11-19 08:01:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_seq_open [2022-11-19 08:01:07,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_seq_open [2022-11-19 08:01:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 08:01:07,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 08:01:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:01:07,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:01:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-19 08:01:07,407 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-19 08:01:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_enable_vi [2022-11-19 08:01:07,407 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_enable_vi [2022-11-19 08:01:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-11-19 08:01:07,407 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-11-19 08:01:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_poll_controller [2022-11-19 08:01:07,408 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_poll_controller [2022-11-19 08:01:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-19 08:01:07,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-19 08:01:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 08:01:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 08:01:07,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 08:01:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure reclaimable [2022-11-19 08:01:07,409 INFO L138 BoogieDeclarations]: Found implementation of procedure reclaimable [2022-11-19 08:01:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 08:01:07,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 08:01:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-19 08:01:07,409 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-19 08:01:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_intr_handler [2022-11-19 08:01:07,410 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_intr_handler [2022-11-19 08:01:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2022-11-19 08:01:07,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2022-11-19 08:01:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2022-11-19 08:01:07,410 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2022-11-19 08:01:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_bits [2022-11-19 08:01:07,411 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_bits [2022-11-19 08:01:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-19 08:01:07,411 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-19 08:01:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure qtimer_val [2022-11-19 08:01:07,411 INFO L138 BoogieDeclarations]: Found implementation of procedure qtimer_val [2022-11-19 08:01:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msix [2022-11-19 08:01:07,412 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msix [2022-11-19 08:01:07,412 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2022-11-19 08:01:07,412 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2022-11-19 08:01:07,412 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-19 08:01:07,412 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-19 08:01:07,412 INFO L130 BoogieDeclarations]: Found specification of procedure rspq_next [2022-11-19 08:01:07,413 INFO L138 BoogieDeclarations]: Found implementation of procedure rspq_next [2022-11-19 08:01:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure dump_mbox [2022-11-19 08:01:07,413 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_mbox [2022-11-19 08:01:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure t4_write_reg [2022-11-19 08:01:07,413 INFO L138 BoogieDeclarations]: Found implementation of procedure t4_write_reg [2022-11-19 08:01:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure txq_stop [2022-11-19 08:01:07,414 INFO L138 BoogieDeclarations]: Found implementation of procedure txq_stop [2022-11-19 08:01:07,414 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-19 08:01:07,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-19 08:01:07,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:01:07,414 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-19 08:01:07,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-19 08:01:07,415 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-19 08:01:07,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-19 08:01:07,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-19 08:01:07,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-19 08:01:07,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 08:01:07,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 08:01:07,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-19 08:01:07,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-19 08:01:07,416 INFO L130 BoogieDeclarations]: Found specification of procedure t4_read_reg64 [2022-11-19 08:01:07,416 INFO L138 BoogieDeclarations]: Found implementation of procedure t4_read_reg64 [2022-11-19 08:01:07,416 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_weight [2022-11-19 08:01:07,416 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_weight [2022-11-19 08:01:07,416 INFO L130 BoogieDeclarations]: Found specification of procedure free_rspq_fl [2022-11-19 08:01:07,417 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rspq_fl [2022-11-19 08:01:07,417 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-19 08:01:07,417 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-19 08:01:07,417 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 08:01:07,417 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 08:01:07,417 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-19 08:01:07,417 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-19 08:01:07,418 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 08:01:07,418 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 08:01:07,418 INFO L130 BoogieDeclarations]: Found specification of procedure sge_queue_entries [2022-11-19 08:01:07,418 INFO L138 BoogieDeclarations]: Found implementation of procedure sge_queue_entries [2022-11-19 08:01:07,418 INFO L130 BoogieDeclarations]: Found specification of procedure seq_release [2022-11-19 08:01:07,418 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_release [2022-11-19 08:01:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure get_buf_size [2022-11-19 08:01:07,419 INFO L138 BoogieDeclarations]: Found implementation of procedure get_buf_size [2022-11-19 08:01:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 08:01:07,419 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 08:01:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure __ilog2_u32 [2022-11-19 08:01:07,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __ilog2_u32 [2022-11-19 08:01:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-19 08:01:07,420 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-19 08:01:07,420 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2022-11-19 08:01:07,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2022-11-19 08:01:07,420 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 08:01:07,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 08:01:07,420 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-19 08:01:07,421 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-19 08:01:07,421 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_master [2022-11-19 08:01:07,421 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_master [2022-11-19 08:01:07,421 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 08:01:07,421 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 08:01:07,421 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_sge_alloc_rxq [2022-11-19 08:01:07,422 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_sge_alloc_rxq [2022-11-19 08:01:07,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:01:07,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 08:01:07,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 08:01:07,422 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-19 08:01:07,422 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-19 08:01:09,089 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:01:09,093 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:01:09,358 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:01:20,956 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 08:01:21,274 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:01:25,697 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:01:25,697 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-19 08:01:25,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:25 BoogieIcfgContainer [2022-11-19 08:01:25,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:01:25,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:01:25,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:01:25,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:01:25,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:57" (1/3) ... [2022-11-19 08:01:25,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b13b876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:25, skipping insertion in model container [2022-11-19 08:01:25,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:05" (2/3) ... [2022-11-19 08:01:25,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b13b876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:25, skipping insertion in model container [2022-11-19 08:01:25,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:25" (3/3) ... [2022-11-19 08:01:25,731 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2022-11-19 08:01:25,755 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:01:25,756 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-19 08:01:25,903 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:01:25,918 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@779131ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:01:25,918 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-19 08:01:25,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 3095 states, 1870 states have (on average 1.3005347593582888) internal successors, (2432), 1908 states have internal predecessors, (2432), 1047 states have call successors, (1047), 175 states have call predecessors, (1047), 174 states have return successors, (1038), 1033 states have call predecessors, (1038), 1038 states have call successors, (1038) [2022-11-19 08:01:25,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2022-11-19 08:01:25,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:25,993 INFO L195 NwaCegarLoop]: trace histogram [59, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:01:25,998 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:01:26,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:26,008 INFO L85 PathProgramCache]: Analyzing trace with hash 663143343, now seen corresponding path program 1 times [2022-11-19 08:01:26,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:01:26,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99611908] [2022-11-19 08:01:26,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:26,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:01:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:28,319 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13340 trivial. 0 not checked. [2022-11-19 08:01:28,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:01:28,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99611908] [2022-11-19 08:01:28,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99611908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:28,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:01:28,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:01:28,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262535851] [2022-11-19 08:01:28,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:28,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:01:28,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:01:28,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:01:28,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:01:28,391 INFO L87 Difference]: Start difference. First operand has 3095 states, 1870 states have (on average 1.3005347593582888) internal successors, (2432), 1908 states have internal predecessors, (2432), 1047 states have call successors, (1047), 175 states have call predecessors, (1047), 174 states have return successors, (1038), 1033 states have call predecessors, (1038), 1038 states have call successors, (1038) Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-11-19 08:01:36,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:36,675 INFO L93 Difference]: Finished difference Result 8951 states and 13094 transitions. [2022-11-19 08:01:36,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:01:36,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 602 [2022-11-19 08:01:36,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:36,782 INFO L225 Difference]: With dead ends: 8951 [2022-11-19 08:01:36,782 INFO L226 Difference]: Without dead ends: 5959 [2022-11-19 08:01:36,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:01:36,822 INFO L413 NwaCegarLoop]: 4846 mSDtfsCounter, 4234 mSDsluCounter, 3842 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4234 SdHoareTripleChecker+Valid, 8688 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:36,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4234 Valid, 8688 Invalid, 1250 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-19 08:01:36,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5959 states. [2022-11-19 08:01:37,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5959 to 5953. [2022-11-19 08:01:37,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5953 states, 3629 states have (on average 1.300082667401488) internal successors, (4718), 3700 states have internal predecessors, (4718), 1976 states have call successors, (1976), 345 states have call predecessors, (1976), 344 states have return successors, (1972), 1962 states have call predecessors, (1972), 1972 states have call successors, (1972) [2022-11-19 08:01:37,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5953 states to 5953 states and 8666 transitions. [2022-11-19 08:01:37,564 INFO L78 Accepts]: Start accepts. Automaton has 5953 states and 8666 transitions. Word has length 602 [2022-11-19 08:01:37,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:37,570 INFO L495 AbstractCegarLoop]: Abstraction has 5953 states and 8666 transitions. [2022-11-19 08:01:37,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-11-19 08:01:37,571 INFO L276 IsEmpty]: Start isEmpty. Operand 5953 states and 8666 transitions. [2022-11-19 08:01:37,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2022-11-19 08:01:37,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:37,609 INFO L195 NwaCegarLoop]: trace histogram [59, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:01:37,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:01:37,609 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:01:37,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:37,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1876111202, now seen corresponding path program 1 times [2022-11-19 08:01:37,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:01:37,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197280012] [2022-11-19 08:01:37,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:37,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:01:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:38,976 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13340 trivial. 0 not checked. [2022-11-19 08:01:38,976 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:01:38,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197280012] [2022-11-19 08:01:38,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197280012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:38,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:01:38,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:01:38,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829711776] [2022-11-19 08:01:38,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:38,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:01:38,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:01:38,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:01:38,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:01:38,986 INFO L87 Difference]: Start difference. First operand 5953 states and 8666 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) [2022-11-19 08:01:43,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:43,665 INFO L93 Difference]: Finished difference Result 11689 states and 16995 transitions. [2022-11-19 08:01:43,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:01:43,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) Word has length 618 [2022-11-19 08:01:43,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:43,715 INFO L225 Difference]: With dead ends: 11689 [2022-11-19 08:01:43,715 INFO L226 Difference]: Without dead ends: 5853 [2022-11-19 08:01:43,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:01:43,880 INFO L413 NwaCegarLoop]: 3809 mSDtfsCounter, 4202 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4202 SdHoareTripleChecker+Valid, 3998 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:43,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4202 Valid, 3998 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-19 08:01:43,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5853 states. [2022-11-19 08:01:44,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5853 to 5853. [2022-11-19 08:01:44,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5853 states, 3566 states have (on average 1.2983735277621986) internal successors, (4630), 3634 states have internal predecessors, (4630), 1938 states have call successors, (1938), 347 states have call predecessors, (1938), 346 states have return successors, (1934), 1924 states have call predecessors, (1934), 1934 states have call successors, (1934) [2022-11-19 08:01:44,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5853 states to 5853 states and 8502 transitions. [2022-11-19 08:01:44,321 INFO L78 Accepts]: Start accepts. Automaton has 5853 states and 8502 transitions. Word has length 618 [2022-11-19 08:01:44,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:44,323 INFO L495 AbstractCegarLoop]: Abstraction has 5853 states and 8502 transitions. [2022-11-19 08:01:44,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) [2022-11-19 08:01:44,325 INFO L276 IsEmpty]: Start isEmpty. Operand 5853 states and 8502 transitions. [2022-11-19 08:01:44,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2022-11-19 08:01:44,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:44,349 INFO L195 NwaCegarLoop]: trace histogram [59, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:01:44,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:01:44,350 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:01:44,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:44,360 INFO L85 PathProgramCache]: Analyzing trace with hash -272550716, now seen corresponding path program 1 times [2022-11-19 08:01:44,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:01:44,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532857331] [2022-11-19 08:01:44,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:44,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:01:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:45,242 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13340 trivial. 0 not checked. [2022-11-19 08:01:45,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:01:45,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532857331] [2022-11-19 08:01:45,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532857331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:45,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:01:45,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:01:45,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949783291] [2022-11-19 08:01:45,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:45,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:01:45,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:01:45,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:01:45,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:01:45,247 INFO L87 Difference]: Start difference. First operand 5853 states and 8502 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2022-11-19 08:01:53,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:53,494 INFO L93 Difference]: Finished difference Result 15913 states and 23090 transitions. [2022-11-19 08:01:53,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:01:53,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) Word has length 625 [2022-11-19 08:01:53,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:53,561 INFO L225 Difference]: With dead ends: 15913 [2022-11-19 08:01:53,561 INFO L226 Difference]: Without dead ends: 10195 [2022-11-19 08:01:53,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:01:53,589 INFO L413 NwaCegarLoop]: 4542 mSDtfsCounter, 3184 mSDsluCounter, 3746 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3184 SdHoareTripleChecker+Valid, 8288 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:53,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3184 Valid, 8288 Invalid, 1256 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-19 08:01:53,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10195 states. [2022-11-19 08:01:54,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10195 to 10162. [2022-11-19 08:01:54,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10162 states, 6191 states have (on average 1.2981747698271684) internal successors, (8037), 6319 states have internal predecessors, (8037), 3343 states have call successors, (3343), 626 states have call predecessors, (3343), 625 states have return successors, (3345), 3316 states have call predecessors, (3345), 3339 states have call successors, (3345) [2022-11-19 08:01:54,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10162 states to 10162 states and 14725 transitions. [2022-11-19 08:01:54,305 INFO L78 Accepts]: Start accepts. Automaton has 10162 states and 14725 transitions. Word has length 625 [2022-11-19 08:01:54,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:54,307 INFO L495 AbstractCegarLoop]: Abstraction has 10162 states and 14725 transitions. [2022-11-19 08:01:54,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2022-11-19 08:01:54,308 INFO L276 IsEmpty]: Start isEmpty. Operand 10162 states and 14725 transitions. [2022-11-19 08:01:54,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2022-11-19 08:01:54,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:54,329 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:01:54,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:01:54,330 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:01:54,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:54,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1016119138, now seen corresponding path program 1 times [2022-11-19 08:01:54,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:01:54,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403366729] [2022-11-19 08:01:54,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:54,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:01:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:56,498 INFO L134 CoverageAnalysis]: Checked inductivity of 13597 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13597 trivial. 0 not checked. [2022-11-19 08:01:56,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:01:56,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403366729] [2022-11-19 08:01:56,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403366729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:56,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:01:56,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:01:56,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167400684] [2022-11-19 08:01:56,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:56,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:01:56,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:01:56,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:01:56,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:01:56,503 INFO L87 Difference]: Start difference. First operand 10162 states and 14725 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2022-11-19 08:02:05,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:05,768 INFO L93 Difference]: Finished difference Result 10168 states and 14730 transitions. [2022-11-19 08:02:05,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:02:05,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 636 [2022-11-19 08:02:05,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:05,845 INFO L225 Difference]: With dead ends: 10168 [2022-11-19 08:02:05,846 INFO L226 Difference]: Without dead ends: 10166 [2022-11-19 08:02:05,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:02:05,855 INFO L413 NwaCegarLoop]: 3790 mSDtfsCounter, 4245 mSDsluCounter, 7563 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4260 SdHoareTripleChecker+Valid, 11353 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:02:05,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4260 Valid, 11353 Invalid, 1818 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-19 08:02:05,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10166 states. [2022-11-19 08:02:06,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10166 to 10166. [2022-11-19 08:02:06,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10166 states, 6194 states have (on average 1.2980303519535035) internal successors, (8040), 6322 states have internal predecessors, (8040), 3343 states have call successors, (3343), 627 states have call predecessors, (3343), 626 states have return successors, (3345), 3316 states have call predecessors, (3345), 3339 states have call successors, (3345) [2022-11-19 08:02:06,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10166 states to 10166 states and 14728 transitions. [2022-11-19 08:02:06,581 INFO L78 Accepts]: Start accepts. Automaton has 10166 states and 14728 transitions. Word has length 636 [2022-11-19 08:02:06,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:06,582 INFO L495 AbstractCegarLoop]: Abstraction has 10166 states and 14728 transitions. [2022-11-19 08:02:06,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2022-11-19 08:02:06,582 INFO L276 IsEmpty]: Start isEmpty. Operand 10166 states and 14728 transitions. [2022-11-19 08:02:06,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2022-11-19 08:02:06,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:06,606 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:02:06,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:02:06,607 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:02:06,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:06,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1500795965, now seen corresponding path program 1 times [2022-11-19 08:02:06,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:06,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624425330] [2022-11-19 08:02:06,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:06,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 13602 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13600 trivial. 0 not checked. [2022-11-19 08:02:08,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:08,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624425330] [2022-11-19 08:02:08,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624425330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:08,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:02:08,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:02:08,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220164075] [2022-11-19 08:02:08,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:08,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:02:08,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:08,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:02:08,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:02:08,455 INFO L87 Difference]: Start difference. First operand 10166 states and 14728 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-19 08:02:17,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:17,505 INFO L93 Difference]: Finished difference Result 10172 states and 14733 transitions. [2022-11-19 08:02:17,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:02:17,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) Word has length 647 [2022-11-19 08:02:17,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:17,580 INFO L225 Difference]: With dead ends: 10172 [2022-11-19 08:02:17,580 INFO L226 Difference]: Without dead ends: 10170 [2022-11-19 08:02:17,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:02:17,590 INFO L413 NwaCegarLoop]: 3793 mSDtfsCounter, 4239 mSDsluCounter, 7563 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4253 SdHoareTripleChecker+Valid, 11356 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:02:17,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4253 Valid, 11356 Invalid, 1818 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-19 08:02:17,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10170 states. [2022-11-19 08:02:18,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10170 to 10170. [2022-11-19 08:02:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10170 states, 6197 states have (on average 1.297886073906729) internal successors, (8043), 6325 states have internal predecessors, (8043), 3343 states have call successors, (3343), 628 states have call predecessors, (3343), 627 states have return successors, (3345), 3316 states have call predecessors, (3345), 3339 states have call successors, (3345) [2022-11-19 08:02:18,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10170 states to 10170 states and 14731 transitions. [2022-11-19 08:02:18,481 INFO L78 Accepts]: Start accepts. Automaton has 10170 states and 14731 transitions. Word has length 647 [2022-11-19 08:02:18,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:18,483 INFO L495 AbstractCegarLoop]: Abstraction has 10170 states and 14731 transitions. [2022-11-19 08:02:18,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-19 08:02:18,483 INFO L276 IsEmpty]: Start isEmpty. Operand 10170 states and 14731 transitions. [2022-11-19 08:02:18,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2022-11-19 08:02:18,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:18,497 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:02:18,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:02:18,498 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:02:18,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:18,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1140089474, now seen corresponding path program 1 times [2022-11-19 08:02:18,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:18,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947386334] [2022-11-19 08:02:18,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:18,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:20,110 INFO L134 CoverageAnalysis]: Checked inductivity of 13605 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13601 trivial. 0 not checked. [2022-11-19 08:02:20,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:20,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947386334] [2022-11-19 08:02:20,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947386334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:20,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:02:20,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:02:20,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648156697] [2022-11-19 08:02:20,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:20,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:02:20,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:20,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:02:20,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:02:20,113 INFO L87 Difference]: Start difference. First operand 10170 states and 14731 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (69), 3 states have call predecessors, (69), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2022-11-19 08:02:28,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:28,008 INFO L93 Difference]: Finished difference Result 10176 states and 14736 transitions. [2022-11-19 08:02:28,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:02:28,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (69), 3 states have call predecessors, (69), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 646 [2022-11-19 08:02:28,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:28,063 INFO L225 Difference]: With dead ends: 10176 [2022-11-19 08:02:28,063 INFO L226 Difference]: Without dead ends: 10174 [2022-11-19 08:02:28,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:02:28,072 INFO L413 NwaCegarLoop]: 3793 mSDtfsCounter, 4240 mSDsluCounter, 7563 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4253 SdHoareTripleChecker+Valid, 11356 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:02:28,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4253 Valid, 11356 Invalid, 1818 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-19 08:02:28,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10174 states. [2022-11-19 08:02:28,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10174 to 10174. [2022-11-19 08:02:28,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10174 states, 6200 states have (on average 1.297741935483871) internal successors, (8046), 6328 states have internal predecessors, (8046), 3343 states have call successors, (3343), 629 states have call predecessors, (3343), 628 states have return successors, (3345), 3316 states have call predecessors, (3345), 3339 states have call successors, (3345) [2022-11-19 08:02:28,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10174 states to 10174 states and 14734 transitions. [2022-11-19 08:02:28,904 INFO L78 Accepts]: Start accepts. Automaton has 10174 states and 14734 transitions. Word has length 646 [2022-11-19 08:02:28,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:28,905 INFO L495 AbstractCegarLoop]: Abstraction has 10174 states and 14734 transitions. [2022-11-19 08:02:28,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (69), 3 states have call predecessors, (69), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2022-11-19 08:02:28,906 INFO L276 IsEmpty]: Start isEmpty. Operand 10174 states and 14734 transitions. [2022-11-19 08:02:28,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2022-11-19 08:02:28,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:28,931 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:02:28,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:02:28,932 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:02:28,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:28,933 INFO L85 PathProgramCache]: Analyzing trace with hash -729638002, now seen corresponding path program 1 times [2022-11-19 08:02:28,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:28,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124307969] [2022-11-19 08:02:28,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:28,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:30,443 INFO L134 CoverageAnalysis]: Checked inductivity of 13619 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13613 trivial. 0 not checked. [2022-11-19 08:02:30,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:30,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124307969] [2022-11-19 08:02:30,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124307969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:30,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:02:30,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:02:30,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79771263] [2022-11-19 08:02:30,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:30,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:02:30,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:30,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:02:30,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:02:30,446 INFO L87 Difference]: Start difference. First operand 10174 states and 14734 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2022-11-19 08:02:38,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:38,292 INFO L93 Difference]: Finished difference Result 10180 states and 14739 transitions. [2022-11-19 08:02:38,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:02:38,293 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) Word has length 658 [2022-11-19 08:02:38,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:38,348 INFO L225 Difference]: With dead ends: 10180 [2022-11-19 08:02:38,348 INFO L226 Difference]: Without dead ends: 10178 [2022-11-19 08:02:38,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:02:38,358 INFO L413 NwaCegarLoop]: 3793 mSDtfsCounter, 4239 mSDsluCounter, 7563 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4251 SdHoareTripleChecker+Valid, 11356 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:02:38,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4251 Valid, 11356 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-19 08:02:38,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10178 states. [2022-11-19 08:02:39,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10178 to 10178. [2022-11-19 08:02:39,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10178 states, 6203 states have (on average 1.2975979364823473) internal successors, (8049), 6331 states have internal predecessors, (8049), 3343 states have call successors, (3343), 630 states have call predecessors, (3343), 629 states have return successors, (3345), 3316 states have call predecessors, (3345), 3339 states have call successors, (3345) [2022-11-19 08:02:39,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10178 states to 10178 states and 14737 transitions. [2022-11-19 08:02:39,241 INFO L78 Accepts]: Start accepts. Automaton has 10178 states and 14737 transitions. Word has length 658 [2022-11-19 08:02:39,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:39,242 INFO L495 AbstractCegarLoop]: Abstraction has 10178 states and 14737 transitions. [2022-11-19 08:02:39,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2022-11-19 08:02:39,242 INFO L276 IsEmpty]: Start isEmpty. Operand 10178 states and 14737 transitions. [2022-11-19 08:02:39,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2022-11-19 08:02:39,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:39,323 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:02:39,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:02:39,324 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:02:39,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:39,325 INFO L85 PathProgramCache]: Analyzing trace with hash -406224562, now seen corresponding path program 1 times [2022-11-19 08:02:39,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:39,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715841208] [2022-11-19 08:02:39,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:39,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 13632 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13624 trivial. 0 not checked. [2022-11-19 08:02:40,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:40,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715841208] [2022-11-19 08:02:40,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715841208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:40,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:02:40,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:02:40,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350421738] [2022-11-19 08:02:40,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:40,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:02:40,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:40,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:02:40,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:02:40,727 INFO L87 Difference]: Start difference. First operand 10178 states and 14737 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2022-11-19 08:02:49,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:49,595 INFO L93 Difference]: Finished difference Result 10258 states and 14807 transitions. [2022-11-19 08:02:49,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:02:49,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) Word has length 662 [2022-11-19 08:02:49,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:49,657 INFO L225 Difference]: With dead ends: 10258 [2022-11-19 08:02:49,658 INFO L226 Difference]: Without dead ends: 10256 [2022-11-19 08:02:49,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:02:49,668 INFO L413 NwaCegarLoop]: 3802 mSDtfsCounter, 4188 mSDsluCounter, 7647 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4199 SdHoareTripleChecker+Valid, 11449 SdHoareTripleChecker+Invalid, 1836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:02:49,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4199 Valid, 11449 Invalid, 1836 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1834 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-11-19 08:02:49,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10256 states. [2022-11-19 08:02:50,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10256 to 10254. [2022-11-19 08:02:50,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10254 states, 6248 states have (on average 1.296414852752881) internal successors, (8100), 6378 states have internal predecessors, (8100), 3351 states have call successors, (3351), 653 states have call predecessors, (3351), 652 states have return successors, (3353), 3324 states have call predecessors, (3353), 3347 states have call successors, (3353) [2022-11-19 08:02:50,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10254 states to 10254 states and 14804 transitions. [2022-11-19 08:02:50,808 INFO L78 Accepts]: Start accepts. Automaton has 10254 states and 14804 transitions. Word has length 662 [2022-11-19 08:02:50,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:50,809 INFO L495 AbstractCegarLoop]: Abstraction has 10254 states and 14804 transitions. [2022-11-19 08:02:50,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2022-11-19 08:02:50,810 INFO L276 IsEmpty]: Start isEmpty. Operand 10254 states and 14804 transitions. [2022-11-19 08:02:50,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2022-11-19 08:02:50,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:50,827 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:02:50,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:02:50,827 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:02:50,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:50,828 INFO L85 PathProgramCache]: Analyzing trace with hash 38311022, now seen corresponding path program 1 times [2022-11-19 08:02:50,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:50,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300421210] [2022-11-19 08:02:50,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:50,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:52,327 INFO L134 CoverageAnalysis]: Checked inductivity of 13651 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13641 trivial. 0 not checked. [2022-11-19 08:02:52,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:52,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300421210] [2022-11-19 08:02:52,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300421210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:52,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:02:52,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:02:52,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918278920] [2022-11-19 08:02:52,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:52,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:02:52,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:52,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:02:52,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:02:52,330 INFO L87 Difference]: Start difference. First operand 10254 states and 14804 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2022-11-19 08:03:00,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:03:00,449 INFO L93 Difference]: Finished difference Result 10260 states and 14809 transitions. [2022-11-19 08:03:00,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:03:00,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) Word has length 668 [2022-11-19 08:03:00,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:03:00,598 INFO L225 Difference]: With dead ends: 10260 [2022-11-19 08:03:00,602 INFO L226 Difference]: Without dead ends: 10258 [2022-11-19 08:03:00,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:03:00,608 INFO L413 NwaCegarLoop]: 3793 mSDtfsCounter, 4239 mSDsluCounter, 7563 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4249 SdHoareTripleChecker+Valid, 11356 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:03:00,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4249 Valid, 11356 Invalid, 1818 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-19 08:03:00,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10258 states. [2022-11-19 08:03:01,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10258 to 10258. [2022-11-19 08:03:01,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10258 states, 6251 states have (on average 1.2962725963845785) internal successors, (8103), 6381 states have internal predecessors, (8103), 3351 states have call successors, (3351), 654 states have call predecessors, (3351), 653 states have return successors, (3353), 3324 states have call predecessors, (3353), 3347 states have call successors, (3353) [2022-11-19 08:03:01,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10258 states to 10258 states and 14807 transitions. [2022-11-19 08:03:01,517 INFO L78 Accepts]: Start accepts. Automaton has 10258 states and 14807 transitions. Word has length 668 [2022-11-19 08:03:01,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:03:01,518 INFO L495 AbstractCegarLoop]: Abstraction has 10258 states and 14807 transitions. [2022-11-19 08:03:01,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2022-11-19 08:03:01,519 INFO L276 IsEmpty]: Start isEmpty. Operand 10258 states and 14807 transitions. [2022-11-19 08:03:01,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2022-11-19 08:03:01,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:03:01,537 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 7, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:03:01,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 08:03:01,537 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:03:01,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:03:01,538 INFO L85 PathProgramCache]: Analyzing trace with hash -2035015122, now seen corresponding path program 1 times [2022-11-19 08:03:01,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:03:01,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305540761] [2022-11-19 08:03:01,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:03:01,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:03:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:03:03,022 INFO L134 CoverageAnalysis]: Checked inductivity of 13672 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 13660 trivial. 0 not checked. [2022-11-19 08:03:03,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:03:03,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305540761] [2022-11-19 08:03:03,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305540761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:03:03,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:03:03,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:03:03,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190017481] [2022-11-19 08:03:03,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:03:03,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:03:03,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:03:03,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:03:03,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:03:03,026 INFO L87 Difference]: Start difference. First operand 10258 states and 14807 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (76), 3 states have call predecessors, (76), 1 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) [2022-11-19 08:03:11,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:03:11,986 INFO L93 Difference]: Finished difference Result 10264 states and 14812 transitions. [2022-11-19 08:03:11,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:03:11,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (76), 3 states have call predecessors, (76), 1 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) Word has length 672 [2022-11-19 08:03:11,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:03:12,039 INFO L225 Difference]: With dead ends: 10264 [2022-11-19 08:03:12,040 INFO L226 Difference]: Without dead ends: 10262 [2022-11-19 08:03:12,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:03:12,048 INFO L413 NwaCegarLoop]: 3793 mSDtfsCounter, 4239 mSDsluCounter, 7563 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4248 SdHoareTripleChecker+Valid, 11356 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:03:12,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4248 Valid, 11356 Invalid, 1818 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-11-19 08:03:12,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10262 states. [2022-11-19 08:03:12,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10262 to 10262. [2022-11-19 08:03:12,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10262 states, 6254 states have (on average 1.2961304764950432) internal successors, (8106), 6384 states have internal predecessors, (8106), 3351 states have call successors, (3351), 655 states have call predecessors, (3351), 654 states have return successors, (3353), 3324 states have call predecessors, (3353), 3347 states have call successors, (3353) [2022-11-19 08:03:12,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10262 states to 10262 states and 14810 transitions. [2022-11-19 08:03:12,971 INFO L78 Accepts]: Start accepts. Automaton has 10262 states and 14810 transitions. Word has length 672 [2022-11-19 08:03:12,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:03:12,971 INFO L495 AbstractCegarLoop]: Abstraction has 10262 states and 14810 transitions. [2022-11-19 08:03:12,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (76), 3 states have call predecessors, (76), 1 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) [2022-11-19 08:03:12,972 INFO L276 IsEmpty]: Start isEmpty. Operand 10262 states and 14810 transitions. [2022-11-19 08:03:12,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2022-11-19 08:03:12,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:03:12,992 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 8, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:03:12,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 08:03:12,993 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:03:12,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:03:12,994 INFO L85 PathProgramCache]: Analyzing trace with hash -692304989, now seen corresponding path program 1 times [2022-11-19 08:03:12,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:03:12,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901605293] [2022-11-19 08:03:12,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:03:12,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:03:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:03:14,432 INFO L134 CoverageAnalysis]: Checked inductivity of 13698 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13684 trivial. 0 not checked. [2022-11-19 08:03:14,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:03:14,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901605293] [2022-11-19 08:03:14,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901605293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:03:14,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:03:14,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:03:14,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498187194] [2022-11-19 08:03:14,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:03:14,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:03:14,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:03:14,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:03:14,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:03:14,436 INFO L87 Difference]: Start difference. First operand 10262 states and 14810 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (77), 3 states have call predecessors, (77), 1 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2022-11-19 08:03:22,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:03:22,036 INFO L93 Difference]: Finished difference Result 10268 states and 14815 transitions. [2022-11-19 08:03:22,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:03:22,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (77), 3 states have call predecessors, (77), 1 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) Word has length 677 [2022-11-19 08:03:22,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:03:22,087 INFO L225 Difference]: With dead ends: 10268 [2022-11-19 08:03:22,087 INFO L226 Difference]: Without dead ends: 10266 [2022-11-19 08:03:22,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:03:22,096 INFO L413 NwaCegarLoop]: 3793 mSDtfsCounter, 4239 mSDsluCounter, 7563 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4247 SdHoareTripleChecker+Valid, 11356 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:03:22,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4247 Valid, 11356 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-19 08:03:22,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10266 states. [2022-11-19 08:03:23,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10266 to 10266. [2022-11-19 08:03:23,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10266 states, 6257 states have (on average 1.2959884928879655) internal successors, (8109), 6387 states have internal predecessors, (8109), 3351 states have call successors, (3351), 656 states have call predecessors, (3351), 655 states have return successors, (3353), 3324 states have call predecessors, (3353), 3347 states have call successors, (3353) [2022-11-19 08:03:23,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10266 states to 10266 states and 14813 transitions. [2022-11-19 08:03:23,113 INFO L78 Accepts]: Start accepts. Automaton has 10266 states and 14813 transitions. Word has length 677 [2022-11-19 08:03:23,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:03:23,114 INFO L495 AbstractCegarLoop]: Abstraction has 10266 states and 14813 transitions. [2022-11-19 08:03:23,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (77), 3 states have call predecessors, (77), 1 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2022-11-19 08:03:23,114 INFO L276 IsEmpty]: Start isEmpty. Operand 10266 states and 14813 transitions. [2022-11-19 08:03:23,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2022-11-19 08:03:23,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:03:23,134 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 9, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:03:23,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 08:03:23,135 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:03:23,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:03:23,135 INFO L85 PathProgramCache]: Analyzing trace with hash 908805150, now seen corresponding path program 1 times [2022-11-19 08:03:23,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:03:23,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595398925] [2022-11-19 08:03:23,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:03:23,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:03:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:03:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 13725 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13709 trivial. 0 not checked. [2022-11-19 08:03:24,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:03:24,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595398925] [2022-11-19 08:03:24,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595398925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:03:24,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:03:24,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:03:24,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517629373] [2022-11-19 08:03:24,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:03:24,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:03:24,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:03:24,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:03:24,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:03:24,553 INFO L87 Difference]: Start difference. First operand 10266 states and 14813 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2022-11-19 08:03:32,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:03:32,952 INFO L93 Difference]: Finished difference Result 10272 states and 14818 transitions. [2022-11-19 08:03:32,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:03:32,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) Word has length 676 [2022-11-19 08:03:32,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:03:32,998 INFO L225 Difference]: With dead ends: 10272 [2022-11-19 08:03:32,998 INFO L226 Difference]: Without dead ends: 10270 [2022-11-19 08:03:33,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:03:33,005 INFO L413 NwaCegarLoop]: 3793 mSDtfsCounter, 4240 mSDsluCounter, 7563 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4247 SdHoareTripleChecker+Valid, 11356 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:03:33,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4247 Valid, 11356 Invalid, 1818 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-19 08:03:33,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10270 states. [2022-11-19 08:03:33,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10270 to 10270. [2022-11-19 08:03:33,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10270 states, 6260 states have (on average 1.2958466453674122) internal successors, (8112), 6390 states have internal predecessors, (8112), 3351 states have call successors, (3351), 657 states have call predecessors, (3351), 656 states have return successors, (3353), 3324 states have call predecessors, (3353), 3347 states have call successors, (3353) [2022-11-19 08:03:33,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10270 states to 10270 states and 14816 transitions. [2022-11-19 08:03:33,953 INFO L78 Accepts]: Start accepts. Automaton has 10270 states and 14816 transitions. Word has length 676 [2022-11-19 08:03:33,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:03:33,953 INFO L495 AbstractCegarLoop]: Abstraction has 10270 states and 14816 transitions. [2022-11-19 08:03:33,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2022-11-19 08:03:33,954 INFO L276 IsEmpty]: Start isEmpty. Operand 10270 states and 14816 transitions. [2022-11-19 08:03:33,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2022-11-19 08:03:33,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:03:33,970 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 10, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:03:33,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 08:03:33,971 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:03:33,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:03:33,971 INFO L85 PathProgramCache]: Analyzing trace with hash 592906035, now seen corresponding path program 1 times [2022-11-19 08:03:33,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:03:33,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477803317] [2022-11-19 08:03:33,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:03:33,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:03:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:03:35,314 INFO L134 CoverageAnalysis]: Checked inductivity of 13759 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13741 trivial. 0 not checked. [2022-11-19 08:03:35,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:03:35,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477803317] [2022-11-19 08:03:35,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477803317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:03:35,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:03:35,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:03:35,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153359210] [2022-11-19 08:03:35,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:03:35,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:03:35,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:03:35,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:03:35,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:03:35,317 INFO L87 Difference]: Start difference. First operand 10270 states and 14816 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (76), 3 states have call predecessors, (76), 1 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) [2022-11-19 08:03:44,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:03:44,539 INFO L93 Difference]: Finished difference Result 10276 states and 14821 transitions. [2022-11-19 08:03:44,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:03:44,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (76), 3 states have call predecessors, (76), 1 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) Word has length 681 [2022-11-19 08:03:44,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:03:44,576 INFO L225 Difference]: With dead ends: 10276 [2022-11-19 08:03:44,576 INFO L226 Difference]: Without dead ends: 10274 [2022-11-19 08:03:44,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:03:44,582 INFO L413 NwaCegarLoop]: 3793 mSDtfsCounter, 4240 mSDsluCounter, 7563 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4246 SdHoareTripleChecker+Valid, 11356 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:03:44,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4246 Valid, 11356 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-11-19 08:03:44,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10274 states. [2022-11-19 08:03:45,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10274 to 10274. [2022-11-19 08:03:45,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10274 states, 6263 states have (on average 1.2957049337378252) internal successors, (8115), 6393 states have internal predecessors, (8115), 3351 states have call successors, (3351), 658 states have call predecessors, (3351), 657 states have return successors, (3353), 3324 states have call predecessors, (3353), 3347 states have call successors, (3353) [2022-11-19 08:03:45,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10274 states to 10274 states and 14819 transitions. [2022-11-19 08:03:45,454 INFO L78 Accepts]: Start accepts. Automaton has 10274 states and 14819 transitions. Word has length 681 [2022-11-19 08:03:45,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:03:45,455 INFO L495 AbstractCegarLoop]: Abstraction has 10274 states and 14819 transitions. [2022-11-19 08:03:45,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (76), 3 states have call predecessors, (76), 1 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) [2022-11-19 08:03:45,455 INFO L276 IsEmpty]: Start isEmpty. Operand 10274 states and 14819 transitions. [2022-11-19 08:03:45,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2022-11-19 08:03:45,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:03:45,466 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 11, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:03:45,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 08:03:45,467 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:03:45,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:03:45,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1644166914, now seen corresponding path program 1 times [2022-11-19 08:03:45,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:03:45,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841594519] [2022-11-19 08:03:45,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:03:45,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:03:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:03:46,558 INFO L134 CoverageAnalysis]: Checked inductivity of 13797 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 13777 trivial. 0 not checked. [2022-11-19 08:03:46,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:03:46,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841594519] [2022-11-19 08:03:46,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841594519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:03:46,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:03:46,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:03:46,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540115933] [2022-11-19 08:03:46,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:03:46,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:03:46,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:03:46,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:03:46,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:03:46,561 INFO L87 Difference]: Start difference. First operand 10274 states and 14819 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (77), 3 states have call predecessors, (77), 1 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2022-11-19 08:03:54,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:03:54,567 INFO L93 Difference]: Finished difference Result 10280 states and 14824 transitions. [2022-11-19 08:03:54,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:03:54,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (77), 3 states have call predecessors, (77), 1 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) Word has length 686 [2022-11-19 08:03:54,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:03:54,596 INFO L225 Difference]: With dead ends: 10280 [2022-11-19 08:03:54,596 INFO L226 Difference]: Without dead ends: 10278 [2022-11-19 08:03:54,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:03:54,602 INFO L413 NwaCegarLoop]: 3793 mSDtfsCounter, 4240 mSDsluCounter, 7563 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4245 SdHoareTripleChecker+Valid, 11356 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:03:54,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4245 Valid, 11356 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-19 08:03:54,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10278 states. [2022-11-19 08:03:55,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10278 to 10278. [2022-11-19 08:03:55,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10278 states, 6266 states have (on average 1.2955633578040218) internal successors, (8118), 6396 states have internal predecessors, (8118), 3351 states have call successors, (3351), 659 states have call predecessors, (3351), 658 states have return successors, (3353), 3324 states have call predecessors, (3353), 3347 states have call successors, (3353) [2022-11-19 08:03:55,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10278 states to 10278 states and 14822 transitions. [2022-11-19 08:03:55,580 INFO L78 Accepts]: Start accepts. Automaton has 10278 states and 14822 transitions. Word has length 686 [2022-11-19 08:03:55,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:03:55,581 INFO L495 AbstractCegarLoop]: Abstraction has 10278 states and 14822 transitions. [2022-11-19 08:03:55,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (77), 3 states have call predecessors, (77), 1 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2022-11-19 08:03:55,581 INFO L276 IsEmpty]: Start isEmpty. Operand 10278 states and 14822 transitions. [2022-11-19 08:03:55,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2022-11-19 08:03:55,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:03:55,602 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 12, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:03:55,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 08:03:55,602 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:03:55,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:03:55,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1475817699, now seen corresponding path program 1 times [2022-11-19 08:03:55,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:03:55,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468689359] [2022-11-19 08:03:55,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:03:55,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:03:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:03:56,583 INFO L134 CoverageAnalysis]: Checked inductivity of 13842 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13820 trivial. 0 not checked. [2022-11-19 08:03:56,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:03:56,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468689359] [2022-11-19 08:03:56,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468689359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:03:56,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:03:56,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:03:56,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995213894] [2022-11-19 08:03:56,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:03:56,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:03:56,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:03:56,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:03:56,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:03:56,586 INFO L87 Difference]: Start difference. First operand 10278 states and 14822 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (81), 3 states have call predecessors, (81), 1 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2022-11-19 08:04:05,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:05,396 INFO L93 Difference]: Finished difference Result 10284 states and 14827 transitions. [2022-11-19 08:04:05,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:04:05,397 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (81), 3 states have call predecessors, (81), 1 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) Word has length 697 [2022-11-19 08:04:05,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:05,421 INFO L225 Difference]: With dead ends: 10284 [2022-11-19 08:04:05,421 INFO L226 Difference]: Without dead ends: 10282 [2022-11-19 08:04:05,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:04:05,425 INFO L413 NwaCegarLoop]: 3793 mSDtfsCounter, 4239 mSDsluCounter, 7563 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4243 SdHoareTripleChecker+Valid, 11356 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:05,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4243 Valid, 11356 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-11-19 08:04:05,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10282 states. [2022-11-19 08:04:06,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10282 to 10282. [2022-11-19 08:04:06,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10282 states, 6269 states have (on average 1.2954219173711916) internal successors, (8121), 6399 states have internal predecessors, (8121), 3351 states have call successors, (3351), 660 states have call predecessors, (3351), 659 states have return successors, (3353), 3324 states have call predecessors, (3353), 3347 states have call successors, (3353) [2022-11-19 08:04:06,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10282 states to 10282 states and 14825 transitions. [2022-11-19 08:04:06,303 INFO L78 Accepts]: Start accepts. Automaton has 10282 states and 14825 transitions. Word has length 697 [2022-11-19 08:04:06,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:06,304 INFO L495 AbstractCegarLoop]: Abstraction has 10282 states and 14825 transitions. [2022-11-19 08:04:06,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (81), 3 states have call predecessors, (81), 1 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2022-11-19 08:04:06,304 INFO L276 IsEmpty]: Start isEmpty. Operand 10282 states and 14825 transitions. [2022-11-19 08:04:06,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2022-11-19 08:04:06,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:06,316 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 13, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:06,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-19 08:04:06,316 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:04:06,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:06,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1431841314, now seen corresponding path program 1 times [2022-11-19 08:04:06,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:06,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909019147] [2022-11-19 08:04:06,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:06,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:07,474 INFO L134 CoverageAnalysis]: Checked inductivity of 13885 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 13861 trivial. 0 not checked. [2022-11-19 08:04:07,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:07,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909019147] [2022-11-19 08:04:07,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909019147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:07,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:07,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:04:07,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955844935] [2022-11-19 08:04:07,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:07,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:04:07,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:07,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:04:07,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:04:07,478 INFO L87 Difference]: Start difference. First operand 10282 states and 14825 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2022-11-19 08:04:16,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:16,714 INFO L93 Difference]: Finished difference Result 10288 states and 14830 transitions. [2022-11-19 08:04:16,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:04:16,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) Word has length 696 [2022-11-19 08:04:16,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:16,748 INFO L225 Difference]: With dead ends: 10288 [2022-11-19 08:04:16,748 INFO L226 Difference]: Without dead ends: 10286 [2022-11-19 08:04:16,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:04:16,755 INFO L413 NwaCegarLoop]: 3793 mSDtfsCounter, 4240 mSDsluCounter, 7563 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4243 SdHoareTripleChecker+Valid, 11356 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:16,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4243 Valid, 11356 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-19 08:04:16,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10286 states. [2022-11-19 08:04:17,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10286 to 10286. [2022-11-19 08:04:17,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10286 states, 6272 states have (on average 1.2952806122448979) internal successors, (8124), 6402 states have internal predecessors, (8124), 3351 states have call successors, (3351), 661 states have call predecessors, (3351), 660 states have return successors, (3353), 3324 states have call predecessors, (3353), 3347 states have call successors, (3353) [2022-11-19 08:04:17,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10286 states to 10286 states and 14828 transitions. [2022-11-19 08:04:17,676 INFO L78 Accepts]: Start accepts. Automaton has 10286 states and 14828 transitions. Word has length 696 [2022-11-19 08:04:17,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:17,677 INFO L495 AbstractCegarLoop]: Abstraction has 10286 states and 14828 transitions. [2022-11-19 08:04:17,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2022-11-19 08:04:17,678 INFO L276 IsEmpty]: Start isEmpty. Operand 10286 states and 14828 transitions. [2022-11-19 08:04:17,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2022-11-19 08:04:17,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:17,693 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 14, 13, 13, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:17,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-19 08:04:17,694 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:04:17,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:17,694 INFO L85 PathProgramCache]: Analyzing trace with hash 656762862, now seen corresponding path program 1 times [2022-11-19 08:04:17,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:17,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924944124] [2022-11-19 08:04:17,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:17,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:18,768 INFO L134 CoverageAnalysis]: Checked inductivity of 13939 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 13913 trivial. 0 not checked. [2022-11-19 08:04:18,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:18,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924944124] [2022-11-19 08:04:18,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924944124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:18,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:18,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:04:18,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348799821] [2022-11-19 08:04:18,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:18,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:04:18,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:18,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:04:18,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:04:18,771 INFO L87 Difference]: Start difference. First operand 10286 states and 14828 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (83), 3 states have call predecessors, (83), 1 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) [2022-11-19 08:04:26,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:26,881 INFO L93 Difference]: Finished difference Result 10292 states and 14833 transitions. [2022-11-19 08:04:26,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:04:26,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (83), 3 states have call predecessors, (83), 1 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) Word has length 708 [2022-11-19 08:04:26,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:26,916 INFO L225 Difference]: With dead ends: 10292 [2022-11-19 08:04:26,916 INFO L226 Difference]: Without dead ends: 10290 [2022-11-19 08:04:26,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:04:26,923 INFO L413 NwaCegarLoop]: 3793 mSDtfsCounter, 4239 mSDsluCounter, 7563 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4241 SdHoareTripleChecker+Valid, 11356 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:26,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4241 Valid, 11356 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-19 08:04:26,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10290 states. [2022-11-19 08:04:27,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10290 to 10290. [2022-11-19 08:04:27,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10290 states, 6275 states have (on average 1.2951394422310758) internal successors, (8127), 6405 states have internal predecessors, (8127), 3351 states have call successors, (3351), 662 states have call predecessors, (3351), 661 states have return successors, (3353), 3324 states have call predecessors, (3353), 3347 states have call successors, (3353) [2022-11-19 08:04:27,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10290 states to 10290 states and 14831 transitions. [2022-11-19 08:04:27,844 INFO L78 Accepts]: Start accepts. Automaton has 10290 states and 14831 transitions. Word has length 708 [2022-11-19 08:04:27,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:27,844 INFO L495 AbstractCegarLoop]: Abstraction has 10290 states and 14831 transitions. [2022-11-19 08:04:27,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (83), 3 states have call predecessors, (83), 1 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) [2022-11-19 08:04:27,845 INFO L276 IsEmpty]: Start isEmpty. Operand 10290 states and 14831 transitions. [2022-11-19 08:04:27,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 714 [2022-11-19 08:04:27,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:27,857 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 15, 14, 14, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:27,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-19 08:04:27,857 INFO L420 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:04:27,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:27,858 INFO L85 PathProgramCache]: Analyzing trace with hash -608420829, now seen corresponding path program 1 times [2022-11-19 08:04:27,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:27,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21261911] [2022-11-19 08:04:27,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:27,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:28,967 INFO L134 CoverageAnalysis]: Checked inductivity of 13993 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 13965 trivial. 0 not checked. [2022-11-19 08:04:28,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:28,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21261911] [2022-11-19 08:04:28,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21261911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:28,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:28,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:04:28,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831947553] [2022-11-19 08:04:28,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:28,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:04:28,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:28,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:04:28,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:04:28,970 INFO L87 Difference]: Start difference. First operand 10290 states and 14831 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (84), 3 states have call predecessors, (84), 1 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2022-11-19 08:04:37,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:37,532 INFO L93 Difference]: Finished difference Result 10622 states and 15275 transitions. [2022-11-19 08:04:37,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:04:37,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (84), 3 states have call predecessors, (84), 1 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) Word has length 713 [2022-11-19 08:04:37,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:37,570 INFO L225 Difference]: With dead ends: 10622 [2022-11-19 08:04:37,570 INFO L226 Difference]: Without dead ends: 10618 [2022-11-19 08:04:37,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:04:37,577 INFO L413 NwaCegarLoop]: 3896 mSDtfsCounter, 4227 mSDsluCounter, 7978 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4228 SdHoareTripleChecker+Valid, 11874 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:37,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4228 Valid, 11874 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1853 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-19 08:04:37,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10618 states. [2022-11-19 08:04:38,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10618 to 10616. [2022-11-19 08:04:38,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10616 states, 6457 states have (on average 1.292550720148676) internal successors, (8346), 6596 states have internal predecessors, (8346), 3461 states have call successors, (3461), 697 states have call predecessors, (3461), 695 states have return successors, (3463), 3434 states have call predecessors, (3463), 3457 states have call successors, (3463) [2022-11-19 08:04:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10616 states to 10616 states and 15270 transitions. [2022-11-19 08:04:38,656 INFO L78 Accepts]: Start accepts. Automaton has 10616 states and 15270 transitions. Word has length 713 [2022-11-19 08:04:38,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:38,656 INFO L495 AbstractCegarLoop]: Abstraction has 10616 states and 15270 transitions. [2022-11-19 08:04:38,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (84), 3 states have call predecessors, (84), 1 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2022-11-19 08:04:38,657 INFO L276 IsEmpty]: Start isEmpty. Operand 10616 states and 15270 transitions. [2022-11-19 08:04:38,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2022-11-19 08:04:38,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:38,670 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 16, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:38,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-19 08:04:38,671 INFO L420 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:04:38,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:38,672 INFO L85 PathProgramCache]: Analyzing trace with hash -2033861085, now seen corresponding path program 1 times [2022-11-19 08:04:38,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:38,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223761990] [2022-11-19 08:04:38,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:38,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 14050 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 14020 trivial. 0 not checked. [2022-11-19 08:04:39,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:39,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223761990] [2022-11-19 08:04:39,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223761990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:39,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:39,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:04:39,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126716122] [2022-11-19 08:04:39,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:39,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:04:39,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:39,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:04:39,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:04:39,876 INFO L87 Difference]: Start difference. First operand 10616 states and 15270 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) [2022-11-19 08:04:50,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:50,051 INFO L93 Difference]: Finished difference Result 10616 states and 15270 transitions. [2022-11-19 08:04:50,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:04:50,052 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) Word has length 717 [2022-11-19 08:04:50,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:50,082 INFO L225 Difference]: With dead ends: 10616 [2022-11-19 08:04:50,083 INFO L226 Difference]: Without dead ends: 10507 [2022-11-19 08:04:50,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:04:50,090 INFO L413 NwaCegarLoop]: 3791 mSDtfsCounter, 4235 mSDsluCounter, 7562 mSDsCounter, 0 mSdLazyCounter, 1812 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4235 SdHoareTripleChecker+Valid, 11353 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:50,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4235 Valid, 11353 Invalid, 1813 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1812 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-19 08:04:50,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10507 states. [2022-11-19 08:04:51,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10507 to 10507. [2022-11-19 08:04:51,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10507 states, 6401 states have (on average 1.2941727855022653) internal successors, (8284), 6534 states have internal predecessors, (8284), 3428 states have call successors, (3428), 676 states have call predecessors, (3428), 676 states have return successors, (3434), 3408 states have call predecessors, (3434), 3428 states have call successors, (3434) [2022-11-19 08:04:51,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10507 states to 10507 states and 15146 transitions. [2022-11-19 08:04:51,159 INFO L78 Accepts]: Start accepts. Automaton has 10507 states and 15146 transitions. Word has length 717 [2022-11-19 08:04:51,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:51,160 INFO L495 AbstractCegarLoop]: Abstraction has 10507 states and 15146 transitions. [2022-11-19 08:04:51,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) [2022-11-19 08:04:51,161 INFO L276 IsEmpty]: Start isEmpty. Operand 10507 states and 15146 transitions. [2022-11-19 08:04:51,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2022-11-19 08:04:51,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:51,188 INFO L195 NwaCegarLoop]: trace histogram [65, 59, 59, 59, 59, 59, 59, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:51,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-19 08:04:51,188 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:04:51,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:51,188 INFO L85 PathProgramCache]: Analyzing trace with hash -295448959, now seen corresponding path program 1 times [2022-11-19 08:04:51,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:51,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727083893] [2022-11-19 08:04:51,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:51,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:52,323 INFO L134 CoverageAnalysis]: Checked inductivity of 14523 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14514 trivial. 0 not checked. [2022-11-19 08:04:52,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:52,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727083893] [2022-11-19 08:04:52,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727083893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:52,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:52,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:04:52,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500830389] [2022-11-19 08:04:52,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:52,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:04:52,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:52,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:04:52,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:04:52,326 INFO L87 Difference]: Start difference. First operand 10507 states and 15146 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 3 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) [2022-11-19 08:05:01,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:05:01,043 INFO L93 Difference]: Finished difference Result 19954 states and 28760 transitions. [2022-11-19 08:05:01,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:05:01,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 3 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) Word has length 820 [2022-11-19 08:05:01,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:05:01,080 INFO L225 Difference]: With dead ends: 19954 [2022-11-19 08:05:01,080 INFO L226 Difference]: Without dead ends: 9582 [2022-11-19 08:05:01,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:05:01,119 INFO L413 NwaCegarLoop]: 5503 mSDtfsCounter, 2899 mSDsluCounter, 3704 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2899 SdHoareTripleChecker+Valid, 9207 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:05:01,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2899 Valid, 9207 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1494 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-19 08:05:01,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9582 states. [2022-11-19 08:05:02,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9582 to 9576. [2022-11-19 08:05:02,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9576 states, 5813 states have (on average 1.2953724410803371) internal successors, (7530), 5935 states have internal predecessors, (7530), 3112 states have call successors, (3112), 648 states have call predecessors, (3112), 649 states have return successors, (3117), 3094 states have call predecessors, (3117), 3112 states have call successors, (3117) [2022-11-19 08:05:02,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9576 states to 9576 states and 13759 transitions. [2022-11-19 08:05:02,084 INFO L78 Accepts]: Start accepts. Automaton has 9576 states and 13759 transitions. Word has length 820 [2022-11-19 08:05:02,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:05:02,085 INFO L495 AbstractCegarLoop]: Abstraction has 9576 states and 13759 transitions. [2022-11-19 08:05:02,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 3 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) [2022-11-19 08:05:02,086 INFO L276 IsEmpty]: Start isEmpty. Operand 9576 states and 13759 transitions. [2022-11-19 08:05:02,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 893 [2022-11-19 08:05:02,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:05:02,114 INFO L195 NwaCegarLoop]: trace histogram [69, 60, 60, 60, 60, 60, 60, 12, 12, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:05:02,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-19 08:05:02,115 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:05:02,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:05:02,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1882334888, now seen corresponding path program 1 times [2022-11-19 08:05:02,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:05:02,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483547407] [2022-11-19 08:05:02,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:02,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:05:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:05:03,172 INFO L134 CoverageAnalysis]: Checked inductivity of 15533 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 15518 trivial. 0 not checked. [2022-11-19 08:05:03,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:05:03,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483547407] [2022-11-19 08:05:03,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483547407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:05:03,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:05:03,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:05:03,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995581584] [2022-11-19 08:05:03,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:05:03,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:05:03,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:05:03,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:05:03,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:05:03,176 INFO L87 Difference]: Start difference. First operand 9576 states and 13759 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) [2022-11-19 08:05:12,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:05:12,682 INFO L93 Difference]: Finished difference Result 21860 states and 31318 transitions. [2022-11-19 08:05:12,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:05:12,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) Word has length 892 [2022-11-19 08:05:12,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:05:12,716 INFO L225 Difference]: With dead ends: 21860 [2022-11-19 08:05:12,716 INFO L226 Difference]: Without dead ends: 13074 [2022-11-19 08:05:12,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:05:12,736 INFO L413 NwaCegarLoop]: 6189 mSDtfsCounter, 2897 mSDsluCounter, 3696 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2897 SdHoareTripleChecker+Valid, 9885 SdHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:05:12,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2897 Valid, 9885 Invalid, 1700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1685 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-19 08:05:12,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13074 states. [2022-11-19 08:05:14,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13074 to 13068. [2022-11-19 08:05:14,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13068 states, 7912 states have (on average 1.2938574317492417) internal successors, (10237), 8087 states have internal predecessors, (10237), 4236 states have call successors, (4236), 916 states have call predecessors, (4236), 918 states have return successors, (4243), 4210 states have call predecessors, (4243), 4236 states have call successors, (4243) [2022-11-19 08:05:14,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13068 states to 13068 states and 18716 transitions. [2022-11-19 08:05:14,078 INFO L78 Accepts]: Start accepts. Automaton has 13068 states and 18716 transitions. Word has length 892 [2022-11-19 08:05:14,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:05:14,079 INFO L495 AbstractCegarLoop]: Abstraction has 13068 states and 18716 transitions. [2022-11-19 08:05:14,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) [2022-11-19 08:05:14,080 INFO L276 IsEmpty]: Start isEmpty. Operand 13068 states and 18716 transitions. [2022-11-19 08:05:14,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2022-11-19 08:05:14,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:05:14,102 INFO L195 NwaCegarLoop]: trace histogram [71, 60, 60, 60, 60, 60, 60, 16, 16, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:05:14,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-19 08:05:14,102 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:05:14,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:05:14,103 INFO L85 PathProgramCache]: Analyzing trace with hash -6729780, now seen corresponding path program 1 times [2022-11-19 08:05:14,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:05:14,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622380544] [2022-11-19 08:05:14,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:14,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:05:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:05:15,304 INFO L134 CoverageAnalysis]: Checked inductivity of 16023 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16001 trivial. 0 not checked. [2022-11-19 08:05:15,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:05:15,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622380544] [2022-11-19 08:05:15,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622380544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:05:15,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:05:15,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:05:15,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044406230] [2022-11-19 08:05:15,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:05:15,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:05:15,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:05:15,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:05:15,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:05:15,310 INFO L87 Difference]: Start difference. First operand 13068 states and 18716 transitions. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2022-11-19 08:05:37,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:05:37,808 INFO L93 Difference]: Finished difference Result 41596 states and 62375 transitions. [2022-11-19 08:05:37,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:05:37,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) Word has length 958 [2022-11-19 08:05:37,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:05:37,893 INFO L225 Difference]: With dead ends: 41596 [2022-11-19 08:05:37,893 INFO L226 Difference]: Without dead ends: 29318 [2022-11-19 08:05:37,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:05:37,923 INFO L413 NwaCegarLoop]: 7731 mSDtfsCounter, 3487 mSDsluCounter, 11817 mSDsCounter, 0 mSdLazyCounter, 2946 mSolverCounterSat, 993 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4444 SdHoareTripleChecker+Valid, 19548 SdHoareTripleChecker+Invalid, 3939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 993 IncrementalHoareTripleChecker+Valid, 2946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:05:37,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4444 Valid, 19548 Invalid, 3939 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [993 Valid, 2946 Invalid, 0 Unknown, 0 Unchecked, 18.3s Time] [2022-11-19 08:05:37,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29318 states. [2022-11-19 08:05:40,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29318 to 13072. [2022-11-19 08:05:40,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13072 states, 7916 states have (on average 1.2937089439110663) internal successors, (10241), 8091 states have internal predecessors, (10241), 4236 states have call successors, (4236), 916 states have call predecessors, (4236), 918 states have return successors, (4243), 4210 states have call predecessors, (4243), 4236 states have call successors, (4243) [2022-11-19 08:05:40,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13072 states to 13072 states and 18720 transitions. [2022-11-19 08:05:40,344 INFO L78 Accepts]: Start accepts. Automaton has 13072 states and 18720 transitions. Word has length 958 [2022-11-19 08:05:40,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:05:40,344 INFO L495 AbstractCegarLoop]: Abstraction has 13072 states and 18720 transitions. [2022-11-19 08:05:40,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2022-11-19 08:05:40,345 INFO L276 IsEmpty]: Start isEmpty. Operand 13072 states and 18720 transitions. [2022-11-19 08:05:40,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2022-11-19 08:05:40,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:05:40,365 INFO L195 NwaCegarLoop]: trace histogram [71, 60, 60, 60, 60, 60, 60, 16, 16, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:05:40,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-19 08:05:40,365 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:05:40,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:05:40,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1737637936, now seen corresponding path program 1 times [2022-11-19 08:05:40,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:05:40,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176285896] [2022-11-19 08:05:40,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:40,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:05:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:05:41,325 INFO L134 CoverageAnalysis]: Checked inductivity of 16025 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16001 trivial. 0 not checked. [2022-11-19 08:05:41,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:05:41,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176285896] [2022-11-19 08:05:41,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176285896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:05:41,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:05:41,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:05:41,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37514985] [2022-11-19 08:05:41,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:05:41,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:05:41,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:05:41,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:05:41,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:05:41,329 INFO L87 Difference]: Start difference. First operand 13072 states and 18720 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 3 states have call successors, (111), 2 states have call predecessors, (111), 1 states have return successors, (110), 3 states have call predecessors, (110), 3 states have call successors, (110) [2022-11-19 08:05:50,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:05:50,941 INFO L93 Difference]: Finished difference Result 29112 states and 41791 transitions. [2022-11-19 08:05:50,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:05:50,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 3 states have call successors, (111), 2 states have call predecessors, (111), 1 states have return successors, (110), 3 states have call predecessors, (110), 3 states have call successors, (110) Word has length 965 [2022-11-19 08:05:50,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:05:51,011 INFO L225 Difference]: With dead ends: 29112 [2022-11-19 08:05:51,011 INFO L226 Difference]: Without dead ends: 16830 [2022-11-19 08:05:51,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:05:51,050 INFO L413 NwaCegarLoop]: 6414 mSDtfsCounter, 3137 mSDsluCounter, 3695 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3137 SdHoareTripleChecker+Valid, 10109 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:05:51,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3137 Valid, 10109 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-19 08:05:51,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16830 states. [2022-11-19 08:05:53,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16830 to 16828. [2022-11-19 08:05:53,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16828 states, 10263 states have (on average 1.3050764883562311) internal successors, (13394), 10472 states have internal predecessors, (13394), 5423 states have call successors, (5423), 1139 states have call predecessors, (5423), 1140 states have return successors, (5431), 5389 states have call predecessors, (5431), 5423 states have call successors, (5431) [2022-11-19 08:05:53,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16828 states to 16828 states and 24248 transitions. [2022-11-19 08:05:53,435 INFO L78 Accepts]: Start accepts. Automaton has 16828 states and 24248 transitions. Word has length 965 [2022-11-19 08:05:53,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:05:53,436 INFO L495 AbstractCegarLoop]: Abstraction has 16828 states and 24248 transitions. [2022-11-19 08:05:53,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 3 states have call successors, (111), 2 states have call predecessors, (111), 1 states have return successors, (110), 3 states have call predecessors, (110), 3 states have call successors, (110) [2022-11-19 08:05:53,436 INFO L276 IsEmpty]: Start isEmpty. Operand 16828 states and 24248 transitions. [2022-11-19 08:05:53,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2022-11-19 08:05:53,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:05:53,460 INFO L195 NwaCegarLoop]: trace histogram [73, 60, 60, 60, 60, 60, 60, 16, 16, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:05:53,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-19 08:05:53,460 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:05:53,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:05:53,461 INFO L85 PathProgramCache]: Analyzing trace with hash -530081687, now seen corresponding path program 1 times [2022-11-19 08:05:53,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:05:53,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425184999] [2022-11-19 08:05:53,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:53,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:05:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:05:54,605 INFO L134 CoverageAnalysis]: Checked inductivity of 16345 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 16311 trivial. 0 not checked. [2022-11-19 08:05:54,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:05:54,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425184999] [2022-11-19 08:05:54,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425184999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:05:54,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:05:54,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:05:54,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629340193] [2022-11-19 08:05:54,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:05:54,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:05:54,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:05:54,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:05:54,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:05:54,609 INFO L87 Difference]: Start difference. First operand 16828 states and 24248 transitions. Second operand has 5 states, 5 states have (on average 51.0) internal successors, (255), 4 states have internal predecessors, (255), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2022-11-19 08:06:11,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:11,866 INFO L93 Difference]: Finished difference Result 36534 states and 52667 transitions. [2022-11-19 08:06:11,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:06:11,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.0) internal successors, (255), 4 states have internal predecessors, (255), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) Word has length 991 [2022-11-19 08:06:11,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:12,089 INFO L225 Difference]: With dead ends: 36534 [2022-11-19 08:06:12,090 INFO L226 Difference]: Without dead ends: 20496 [2022-11-19 08:06:12,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:06:12,138 INFO L413 NwaCegarLoop]: 6413 mSDtfsCounter, 3098 mSDsluCounter, 16521 mSDsCounter, 0 mSdLazyCounter, 3730 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3098 SdHoareTripleChecker+Valid, 22934 SdHoareTripleChecker+Invalid, 3731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:12,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3098 Valid, 22934 Invalid, 3731 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 3730 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2022-11-19 08:06:12,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20496 states. [2022-11-19 08:06:15,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20496 to 20488. [2022-11-19 08:06:15,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20488 states, 12517 states have (on average 1.3080610369896941) internal successors, (16373), 12760 states have internal predecessors, (16373), 6607 states have call successors, (6607), 1359 states have call predecessors, (6607), 1362 states have return successors, (6619), 6568 states have call predecessors, (6619), 6607 states have call successors, (6619) [2022-11-19 08:06:15,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20488 states to 20488 states and 29599 transitions. [2022-11-19 08:06:15,551 INFO L78 Accepts]: Start accepts. Automaton has 20488 states and 29599 transitions. Word has length 991 [2022-11-19 08:06:15,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:15,552 INFO L495 AbstractCegarLoop]: Abstraction has 20488 states and 29599 transitions. [2022-11-19 08:06:15,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.0) internal successors, (255), 4 states have internal predecessors, (255), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2022-11-19 08:06:15,553 INFO L276 IsEmpty]: Start isEmpty. Operand 20488 states and 29599 transitions. [2022-11-19 08:06:15,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 993 [2022-11-19 08:06:15,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:15,581 INFO L195 NwaCegarLoop]: trace histogram [73, 60, 60, 60, 60, 60, 60, 16, 16, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:15,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-19 08:06:15,581 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:06:15,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:15,582 INFO L85 PathProgramCache]: Analyzing trace with hash -570991869, now seen corresponding path program 1 times [2022-11-19 08:06:15,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:15,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143661408] [2022-11-19 08:06:15,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:15,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:16,600 INFO L134 CoverageAnalysis]: Checked inductivity of 16345 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 16311 trivial. 0 not checked. [2022-11-19 08:06:16,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:16,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143661408] [2022-11-19 08:06:16,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143661408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:06:16,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:06:16,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:06:16,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391531390] [2022-11-19 08:06:16,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:06:16,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:06:16,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:16,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:06:16,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:06:16,603 INFO L87 Difference]: Start difference. First operand 20488 states and 29599 transitions. Second operand has 5 states, 5 states have (on average 51.2) internal successors, (256), 4 states have internal predecessors, (256), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2022-11-19 08:06:33,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:33,339 INFO L93 Difference]: Finished difference Result 43860 states and 63381 transitions. [2022-11-19 08:06:33,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:06:33,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 4 states have internal predecessors, (256), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) Word has length 992 [2022-11-19 08:06:33,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:33,446 INFO L225 Difference]: With dead ends: 43860 [2022-11-19 08:06:33,446 INFO L226 Difference]: Without dead ends: 24162 [2022-11-19 08:06:33,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:06:33,505 INFO L413 NwaCegarLoop]: 6418 mSDtfsCounter, 3103 mSDsluCounter, 16526 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3103 SdHoareTripleChecker+Valid, 22944 SdHoareTripleChecker+Invalid, 3737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:33,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3103 Valid, 22944 Invalid, 3737 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 3734 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2022-11-19 08:06:33,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24162 states. [2022-11-19 08:06:37,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24162 to 24154. [2022-11-19 08:06:37,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24154 states, 14777 states have (on average 1.3100087974555052) internal successors, (19358), 15054 states have internal predecessors, (19358), 7791 states have call successors, (7791), 1579 states have call predecessors, (7791), 1584 states have return successors, (7807), 7747 states have call predecessors, (7807), 7791 states have call successors, (7807) [2022-11-19 08:06:37,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24154 states to 24154 states and 34956 transitions. [2022-11-19 08:06:37,359 INFO L78 Accepts]: Start accepts. Automaton has 24154 states and 34956 transitions. Word has length 992 [2022-11-19 08:06:37,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:37,360 INFO L495 AbstractCegarLoop]: Abstraction has 24154 states and 34956 transitions. [2022-11-19 08:06:37,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 4 states have internal predecessors, (256), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2022-11-19 08:06:37,361 INFO L276 IsEmpty]: Start isEmpty. Operand 24154 states and 34956 transitions. [2022-11-19 08:06:37,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2022-11-19 08:06:37,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:37,393 INFO L195 NwaCegarLoop]: trace histogram [73, 60, 60, 60, 60, 60, 60, 16, 16, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:37,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-19 08:06:37,393 INFO L420 AbstractCegarLoop]: === Iteration 26 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:06:37,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:37,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1799114000, now seen corresponding path program 1 times [2022-11-19 08:06:37,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:37,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126042770] [2022-11-19 08:06:37,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:37,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 16345 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 16311 trivial. 0 not checked. [2022-11-19 08:06:38,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:38,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126042770] [2022-11-19 08:06:38,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126042770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:06:38,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:06:38,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:06:38,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101734785] [2022-11-19 08:06:38,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:06:38,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:06:38,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:38,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:06:38,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:06:38,551 INFO L87 Difference]: Start difference. First operand 24154 states and 34956 transitions. Second operand has 5 states, 5 states have (on average 51.4) internal successors, (257), 4 states have internal predecessors, (257), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2022-11-19 08:06:55,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:55,788 INFO L93 Difference]: Finished difference Result 51225 states and 74137 transitions. [2022-11-19 08:06:55,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:06:55,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.4) internal successors, (257), 4 states have internal predecessors, (257), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) Word has length 993 [2022-11-19 08:06:55,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:55,879 INFO L225 Difference]: With dead ends: 51225 [2022-11-19 08:06:55,879 INFO L226 Difference]: Without dead ends: 27861 [2022-11-19 08:06:55,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:06:55,927 INFO L413 NwaCegarLoop]: 6419 mSDtfsCounter, 3121 mSDsluCounter, 16519 mSDsCounter, 0 mSdLazyCounter, 3742 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3121 SdHoareTripleChecker+Valid, 22938 SdHoareTripleChecker+Invalid, 3748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 3742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:55,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3121 Valid, 22938 Invalid, 3748 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 3742 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2022-11-19 08:06:55,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27861 states. [2022-11-19 08:06:59,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27861 to 27853. [2022-11-19 08:06:59,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27853 states, 17058 states have (on average 1.3110563958260053) internal successors, (22364), 17369 states have internal predecessors, (22364), 8981 states have call successors, (8981), 1805 states have call predecessors, (8981), 1812 states have return successors, (9001), 8932 states have call predecessors, (9001), 8981 states have call successors, (9001) [2022-11-19 08:06:59,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27853 states to 27853 states and 40346 transitions. [2022-11-19 08:06:59,906 INFO L78 Accepts]: Start accepts. Automaton has 27853 states and 40346 transitions. Word has length 993 [2022-11-19 08:06:59,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:59,908 INFO L495 AbstractCegarLoop]: Abstraction has 27853 states and 40346 transitions. [2022-11-19 08:06:59,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.4) internal successors, (257), 4 states have internal predecessors, (257), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2022-11-19 08:06:59,908 INFO L276 IsEmpty]: Start isEmpty. Operand 27853 states and 40346 transitions. [2022-11-19 08:06:59,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2022-11-19 08:06:59,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:59,960 INFO L195 NwaCegarLoop]: trace histogram [73, 60, 60, 60, 60, 60, 60, 16, 16, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:59,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-19 08:06:59,961 INFO L420 AbstractCegarLoop]: === Iteration 27 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:06:59,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:59,961 INFO L85 PathProgramCache]: Analyzing trace with hash 2015913274, now seen corresponding path program 1 times [2022-11-19 08:06:59,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:59,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346513892] [2022-11-19 08:06:59,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:59,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:07:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:00,854 INFO L134 CoverageAnalysis]: Checked inductivity of 16345 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 16311 trivial. 0 not checked. [2022-11-19 08:07:00,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:07:00,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346513892] [2022-11-19 08:07:00,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346513892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:07:00,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:07:00,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:07:00,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476591549] [2022-11-19 08:07:00,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:07:00,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:07:00,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:07:00,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:07:00,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:07:00,857 INFO L87 Difference]: Start difference. First operand 27853 states and 40346 transitions. Second operand has 5 states, 5 states have (on average 51.6) internal successors, (258), 4 states have internal predecessors, (258), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2022-11-19 08:07:17,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:17,407 INFO L93 Difference]: Finished difference Result 58818 states and 85185 transitions. [2022-11-19 08:07:17,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:07:17,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.6) internal successors, (258), 4 states have internal predecessors, (258), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) Word has length 994 [2022-11-19 08:07:17,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:17,501 INFO L225 Difference]: With dead ends: 58818 [2022-11-19 08:07:17,501 INFO L226 Difference]: Without dead ends: 31755 [2022-11-19 08:07:17,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:07:17,555 INFO L413 NwaCegarLoop]: 6477 mSDtfsCounter, 3200 mSDsluCounter, 16628 mSDsCounter, 0 mSdLazyCounter, 3756 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3200 SdHoareTripleChecker+Valid, 23105 SdHoareTripleChecker+Invalid, 3763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:07:17,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3200 Valid, 23105 Invalid, 3763 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 3756 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2022-11-19 08:07:17,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31755 states. [2022-11-19 08:07:22,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31755 to 31747. [2022-11-19 08:07:22,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31747 states, 19452 states have (on average 1.311793131811639) internal successors, (25517), 19807 states have internal predecessors, (25517), 10230 states have call successors, (10230), 2054 states have call predecessors, (10230), 2063 states have return successors, (10254), 10176 states have call predecessors, (10254), 10230 states have call successors, (10254) [2022-11-19 08:07:22,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31747 states to 31747 states and 46001 transitions. [2022-11-19 08:07:22,118 INFO L78 Accepts]: Start accepts. Automaton has 31747 states and 46001 transitions. Word has length 994 [2022-11-19 08:07:22,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:07:22,120 INFO L495 AbstractCegarLoop]: Abstraction has 31747 states and 46001 transitions. [2022-11-19 08:07:22,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.6) internal successors, (258), 4 states have internal predecessors, (258), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2022-11-19 08:07:22,120 INFO L276 IsEmpty]: Start isEmpty. Operand 31747 states and 46001 transitions. [2022-11-19 08:07:22,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2022-11-19 08:07:22,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:22,154 INFO L195 NwaCegarLoop]: trace histogram [73, 60, 60, 60, 60, 60, 60, 16, 16, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:07:22,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-19 08:07:22,154 INFO L420 AbstractCegarLoop]: === Iteration 28 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:07:22,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:22,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1062104407, now seen corresponding path program 1 times [2022-11-19 08:07:22,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:07:22,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287095998] [2022-11-19 08:07:22,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:22,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:07:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:23,032 INFO L134 CoverageAnalysis]: Checked inductivity of 16345 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 16311 trivial. 0 not checked. [2022-11-19 08:07:23,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:07:23,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287095998] [2022-11-19 08:07:23,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287095998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:07:23,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:07:23,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:07:23,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912739391] [2022-11-19 08:07:23,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:07:23,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:07:23,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:07:23,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:07:23,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:07:23,035 INFO L87 Difference]: Start difference. First operand 31747 states and 46001 transitions. Second operand has 5 states, 5 states have (on average 51.8) internal successors, (259), 4 states have internal predecessors, (259), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) [2022-11-19 08:07:40,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:40,123 INFO L93 Difference]: Finished difference Result 66393 states and 96215 transitions. [2022-11-19 08:07:40,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:07:40,127 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.8) internal successors, (259), 4 states have internal predecessors, (259), 3 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (112), 4 states have call predecessors, (112), 3 states have call successors, (112) Word has length 995 [2022-11-19 08:07:40,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:40,272 INFO L225 Difference]: With dead ends: 66393 [2022-11-19 08:07:40,273 INFO L226 Difference]: Without dead ends: 35436 [2022-11-19 08:07:40,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:07:40,352 INFO L413 NwaCegarLoop]: 6417 mSDtfsCounter, 3097 mSDsluCounter, 16529 mSDsCounter, 0 mSdLazyCounter, 3750 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3097 SdHoareTripleChecker+Valid, 22946 SdHoareTripleChecker+Invalid, 3757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:07:40,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3097 Valid, 22946 Invalid, 3757 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 3750 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2022-11-19 08:07:40,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35436 states.