./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/bin/utaipan-TEXQjIfE4P/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_02624e5c-b00e-4f52-9005-feb945fc6cca/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/bin/utaipan-TEXQjIfE4P --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 --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:47:43,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:47:43,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:47:43,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:47:43,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:47:43,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:47:43,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:47:43,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:47:43,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:47:43,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:47:43,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:47:43,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:47:43,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:47:43,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:47:43,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:47:43,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:47:43,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:47:43,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:47:43,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:47:43,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:47:43,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:47:43,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:47:43,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:47:43,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:47:43,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:47:43,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:47:43,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:47:43,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:47:43,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:47:43,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:47:43,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:47:43,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:47:43,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:47:43,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:47:43,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:47:43,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:47:43,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:47:43,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:47:43,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:47:43,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:47:43,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:47:43,309 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:47:43,343 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:47:43,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:47:43,344 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:47:43,344 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:47:43,345 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:47:43,345 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:47:43,345 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:47:43,346 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:47:43,346 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:47:43,346 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:47:43,347 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:47:43,347 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:47:43,347 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:47:43,348 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:47:43,348 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:47:43,348 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:47:43,349 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:47:43,349 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:47:43,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:47:43,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:47:43,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:47:43,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:47:43,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:47:43,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:47:43,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:47:43,352 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:47:43,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:47:43,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:47:43,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:47:43,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:47:43,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:47:43,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:47:43,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:47:43,355 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:47:43,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:47:43,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:47:43,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:47:43,356 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:47:43,356 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92fce7e8733fef6ba8e1d7d5b12f8bb98a90f9164efa69e5285fd66b003407a0 [2021-11-21 01:47:43,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:47:43,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:47:43,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:47:43,779 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:47:43,780 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:47:43,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2021-11-21 01:47:43,874 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/bin/utaipan-TEXQjIfE4P/data/8f993a7a6/e80d4a87421b420595b46eeeb39210e5/FLAGdc6468836 [2021-11-21 01:47:45,399 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:47:45,400 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2021-11-21 01:47:45,494 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/bin/utaipan-TEXQjIfE4P/data/8f993a7a6/e80d4a87421b420595b46eeeb39210e5/FLAGdc6468836 [2021-11-21 01:47:45,914 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/bin/utaipan-TEXQjIfE4P/data/8f993a7a6/e80d4a87421b420595b46eeeb39210e5 [2021-11-21 01:47:45,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:47:45,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:47:45,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:47:45,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:47:45,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:47:45,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:47:45" (1/1) ... [2021-11-21 01:47:45,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a9c42ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:45, skipping insertion in model container [2021-11-21 01:47:45,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:47:45" (1/1) ... [2021-11-21 01:47:45,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:47:46,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:47:55,678 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622479,622492] [2021-11-21 01:47:55,682 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622648,622661] [2021-11-21 01:47:55,683 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622815,622828] [2021-11-21 01:47:55,684 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622983,622996] [2021-11-21 01:47:55,772 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:47:55,850 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:47:57,007 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622479,622492] [2021-11-21 01:47:57,008 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622648,622661] [2021-11-21 01:47:57,008 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622815,622828] [2021-11-21 01:47:57,009 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622983,622996] [2021-11-21 01:47:57,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:47:57,669 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:47:57,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:57 WrapperNode [2021-11-21 01:47:57,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:47:57,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:47:57,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:47:57,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:47:57,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:57" (1/1) ... [2021-11-21 01:47:57,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:57" (1/1) ... [2021-11-21 01:47:58,469 INFO L137 Inliner]: procedures = 780, calls = 5890, calls flagged for inlining = 431, calls inlined = 378, statements flattened = 14351 [2021-11-21 01:47:58,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:47:58,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:47:58,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:47:58,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:47:58,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:57" (1/1) ... [2021-11-21 01:47:58,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:57" (1/1) ... [2021-11-21 01:47:58,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:57" (1/1) ... [2021-11-21 01:47:58,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:57" (1/1) ... [2021-11-21 01:47:59,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:57" (1/1) ... [2021-11-21 01:47:59,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:57" (1/1) ... [2021-11-21 01:47:59,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:57" (1/1) ... [2021-11-21 01:47:59,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:47:59,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:47:59,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:47:59,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:47:59,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:57" (1/1) ... [2021-11-21 01:47:59,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:47:59,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:47:59,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:47:59,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02624e5c-b00e-4f52-9005-feb945fc6cca/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:47:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_sge_intr_msix [2021-11-21 01:47:59,558 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_sge_intr_msix [2021-11-21 01:47:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-21 01:47:59,559 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-21 01:47:59,559 INFO L130 BoogieDeclarations]: Found specification of procedure seq_putc [2021-11-21 01:47:59,559 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_putc [2021-11-21 01:47:59,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:47:59,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:47:59,560 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 01:47:59,560 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 01:47:59,560 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 01:47:59,560 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 01:47:59,561 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup_debugfs [2021-11-21 01:47:59,561 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup_debugfs [2021-11-21 01:47:59,561 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-21 01:47:59,561 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-21 01:47:59,561 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_sw_desc [2021-11-21 01:47:59,562 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_sw_desc [2021-11-21 01:47:59,562 INFO L130 BoogieDeclarations]: Found specification of procedure is_t4 [2021-11-21 01:47:59,562 INFO L138 BoogieDeclarations]: Found implementation of procedure is_t4 [2021-11-21 01:47:59,562 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 01:47:59,562 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 01:47:59,563 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 01:47:59,563 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 01:47:59,563 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-21 01:47:59,563 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-21 01:47:59,563 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2021-11-21 01:47:59,564 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2021-11-21 01:47:59,564 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 01:47:59,564 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 01:47:59,564 INFO L130 BoogieDeclarations]: Found specification of procedure is_new_response [2021-11-21 01:47:59,565 INFO L138 BoogieDeclarations]: Found implementation of procedure is_new_response [2021-11-21 01:47:59,565 INFO L130 BoogieDeclarations]: Found specification of procedure __napi_schedule [2021-11-21 01:47:59,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __napi_schedule [2021-11-21 01:47:59,565 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 01:47:59,565 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 01:47:59,566 INFO L130 BoogieDeclarations]: Found specification of procedure qenable [2021-11-21 01:47:59,566 INFO L138 BoogieDeclarations]: Found implementation of procedure qenable [2021-11-21 01:47:59,566 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2021-11-21 01:47:59,566 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2021-11-21 01:47:59,566 INFO L130 BoogieDeclarations]: Found specification of procedure is_10g_port [2021-11-21 01:47:59,567 INFO L138 BoogieDeclarations]: Found implementation of procedure is_10g_port [2021-11-21 01:47:59,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:47:59,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:47:59,567 INFO L130 BoogieDeclarations]: Found specification of procedure seq_open [2021-11-21 01:47:59,568 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_open [2021-11-21 01:47:59,568 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header_len [2021-11-21 01:47:59,568 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header_len [2021-11-21 01:47:59,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:47:59,568 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_get_port_stats [2021-11-21 01:47:59,569 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_get_port_stats [2021-11-21 01:47:59,569 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-21 01:47:59,569 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-21 01:47:59,569 INFO L130 BoogieDeclarations]: Found specification of procedure free_tx_desc [2021-11-21 01:47:59,569 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tx_desc [2021-11-21 01:47:59,570 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_wr_mbox_core [2021-11-21 01:47:59,570 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_wr_mbox_core [2021-11-21 01:47:59,570 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_offset [2021-11-21 01:47:59,570 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_offset [2021-11-21 01:47:59,570 INFO L130 BoogieDeclarations]: Found specification of procedure netdev2adap [2021-11-21 01:47:59,571 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev2adap [2021-11-21 01:47:59,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 01:47:59,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 01:47:59,571 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-21 01:47:59,571 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-21 01:47:59,572 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 01:47:59,572 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 01:47:59,572 INFO L130 BoogieDeclarations]: Found specification of procedure core_ticks_to_us [2021-11-21 01:47:59,572 INFO L138 BoogieDeclarations]: Found implementation of procedure core_ticks_to_us [2021-11-21 01:47:59,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:47:59,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:47:59,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:47:59,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 01:47:59,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 01:47:59,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 01:47:59,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 01:47:59,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-11-21 01:47:59,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-11-21 01:47:59,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-21 01:47:59,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-21 01:47:59,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-21 01:47:59,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-21 01:47:59,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:47:59,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:47:59,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:47:59,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:47:59,576 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 01:47:59,576 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-21 01:47:59,577 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-21 01:47:59,577 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_change_mac [2021-11-21 01:47:59,577 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_change_mac [2021-11-21 01:47:59,577 INFO L130 BoogieDeclarations]: Found specification of procedure fl_starving [2021-11-21 01:47:59,577 INFO L138 BoogieDeclarations]: Found implementation of procedure fl_starving [2021-11-21 01:47:59,578 INFO L130 BoogieDeclarations]: Found specification of procedure adapter_down [2021-11-21 01:47:59,578 INFO L138 BoogieDeclarations]: Found implementation of procedure adapter_down [2021-11-21 01:47:59,578 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-21 01:47:59,578 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-21 01:47:59,578 INFO L130 BoogieDeclarations]: Found specification of procedure netdev2pinfo [2021-11-21 01:47:59,579 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev2pinfo [2021-11-21 01:47:59,580 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_free_vi [2021-11-21 01:47:59,580 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_free_vi [2021-11-21 01:47:59,580 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_free_sge_resources [2021-11-21 01:47:59,581 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_free_sge_resources [2021-11-21 01:47:59,581 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-21 01:47:59,581 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-21 01:47:59,581 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:47:59,582 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:47:59,582 INFO L130 BoogieDeclarations]: Found specification of procedure t4_read_reg [2021-11-21 01:47:59,582 INFO L138 BoogieDeclarations]: Found implementation of procedure t4_read_reg [2021-11-21 01:47:59,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 01:47:59,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 01:47:59,583 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 01:47:59,583 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 01:47:59,583 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule_prep [2021-11-21 01:47:59,583 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule_prep [2021-11-21 01:47:59,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:47:59,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:47:59,584 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-21 01:47:59,584 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-21 01:47:59,584 INFO L130 BoogieDeclarations]: Found specification of procedure is_eth_imm [2021-11-21 01:47:59,584 INFO L138 BoogieDeclarations]: Found implementation of procedure is_eth_imm [2021-11-21 01:47:59,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:47:59,585 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 01:47:59,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 01:47:59,585 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-11-21 01:47:59,586 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-11-21 01:47:59,586 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 01:47:59,586 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 01:47:59,586 INFO L130 BoogieDeclarations]: Found specification of procedure is_buf_mapped [2021-11-21 01:47:59,587 INFO L138 BoogieDeclarations]: Found implementation of procedure is_buf_mapped [2021-11-21 01:47:59,587 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-21 01:47:59,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 01:47:59,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 01:47:59,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:47:59,588 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:47:59,588 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-21 01:47:59,588 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-21 01:47:59,588 INFO L130 BoogieDeclarations]: Found specification of procedure reg_block_dump [2021-11-21 01:47:59,588 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_block_dump [2021-11-21 01:47:59,589 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-21 01:47:59,589 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-21 01:47:59,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:47:59,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:47:59,589 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-21 01:47:59,590 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-21 01:47:59,590 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_pci_shutdown [2021-11-21 01:47:59,590 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_pci_shutdown [2021-11-21 01:47:59,590 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-21 01:47:59,590 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-21 01:47:59,591 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 01:47:59,591 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 01:47:59,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 01:47:59,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 01:47:59,591 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-21 01:47:59,591 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-21 01:47:59,592 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-21 01:47:59,592 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-21 01:47:59,592 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_set_rxmode [2021-11-21 01:47:59,592 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_set_rxmode [2021-11-21 01:47:59,592 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 01:47:59,593 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 01:47:59,593 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-11-21 01:47:59,593 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-11-21 01:47:59,593 INFO L130 BoogieDeclarations]: Found specification of procedure get_buf_addr [2021-11-21 01:47:59,593 INFO L138 BoogieDeclarations]: Found implementation of procedure get_buf_addr [2021-11-21 01:47:59,594 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_wr_mbox [2021-11-21 01:47:59,594 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_wr_mbox [2021-11-21 01:47:59,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:47:59,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:47:59,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:47:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure interfaces_get_idx [2021-11-21 01:47:59,595 INFO L138 BoogieDeclarations]: Found implementation of procedure interfaces_get_idx [2021-11-21 01:47:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-21 01:47:59,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-21 01:47:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_pci_remove [2021-11-21 01:47:59,596 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_pci_remove [2021-11-21 01:47:59,596 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2021-11-21 01:47:59,596 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2021-11-21 01:47:59,596 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_set_params [2021-11-21 01:47:59,596 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_set_params [2021-11-21 01:47:59,597 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 01:47:59,597 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 01:47:59,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:47:59,597 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:47:59,597 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-21 01:47:59,598 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-21 01:47:59,598 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_get_regs_len [2021-11-21 01:47:59,598 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_get_regs_len [2021-11-21 01:47:59,598 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_open [2021-11-21 01:47:59,598 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_open [2021-11-21 01:47:59,599 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-21 01:47:59,599 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-21 01:47:59,599 INFO L130 BoogieDeclarations]: Found specification of procedure refill_fl [2021-11-21 01:47:59,599 INFO L138 BoogieDeclarations]: Found implementation of procedure refill_fl [2021-11-21 01:47:59,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:47:59,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:47:59,600 INFO L130 BoogieDeclarations]: Found specification of procedure free_rx_bufs [2021-11-21 01:47:59,600 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rx_bufs [2021-11-21 01:47:59,600 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 01:47:59,600 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 01:47:59,600 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-21 01:47:59,601 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-21 01:47:59,601 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-21 01:47:59,601 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-21 01:47:59,601 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_query_params [2021-11-21 01:47:59,601 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_query_params [2021-11-21 01:47:59,602 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 01:47:59,602 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 01:47:59,602 INFO L130 BoogieDeclarations]: Found specification of procedure poison_buf [2021-11-21 01:47:59,602 INFO L138 BoogieDeclarations]: Found implementation of procedure poison_buf [2021-11-21 01:47:59,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:47:59,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:47:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-21 01:47:59,603 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-21 01:47:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 01:47:59,603 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 01:47:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:47:59,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:47:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:47:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2021-11-21 01:47:59,604 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2021-11-21 01:47:59,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-21 01:47:59,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-21 01:47:59,605 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 01:47:59,605 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 01:47:59,605 INFO L130 BoogieDeclarations]: Found specification of procedure sge_qstats_entries [2021-11-21 01:47:59,605 INFO L138 BoogieDeclarations]: Found implementation of procedure sge_qstats_entries [2021-11-21 01:47:59,606 INFO L130 BoogieDeclarations]: Found specification of procedure fl_cap [2021-11-21 01:47:59,606 INFO L138 BoogieDeclarations]: Found implementation of procedure fl_cap [2021-11-21 01:47:59,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:47:59,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-21 01:47:59,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-21 01:47:59,607 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 01:47:59,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 01:47:59,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:47:59,607 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_ring [2021-11-21 01:47:59,607 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_ring [2021-11-21 01:47:59,608 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 01:47:59,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 01:47:59,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:47:59,608 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:47:59,608 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_alloc_mac_filt [2021-11-21 01:47:59,609 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_alloc_mac_filt [2021-11-21 01:47:59,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 01:47:59,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 01:47:59,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 01:47:59,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 01:47:59,610 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2021-11-21 01:47:59,610 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2021-11-21 01:47:59,610 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_set_rxmode [2021-11-21 01:47:59,610 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_set_rxmode [2021-11-21 01:47:59,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_cxgb4vf_module_exit_22_2 [2021-11-21 01:47:59,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_cxgb4vf_module_exit_22_2 [2021-11-21 01:47:59,611 INFO L130 BoogieDeclarations]: Found specification of procedure init_rspq [2021-11-21 01:47:59,611 INFO L138 BoogieDeclarations]: Found implementation of procedure init_rspq [2021-11-21 01:47:59,611 INFO L130 BoogieDeclarations]: Found specification of procedure adap2pinfo [2021-11-21 01:47:59,611 INFO L138 BoogieDeclarations]: Found implementation of procedure adap2pinfo [2021-11-21 01:47:59,612 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2021-11-21 01:47:59,612 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2021-11-21 01:47:59,612 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_stop [2021-11-21 01:47:59,612 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_stop [2021-11-21 01:47:59,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_seq_open [2021-11-21 01:47:59,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_seq_open [2021-11-21 01:47:59,613 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:47:59,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:47:59,613 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:47:59,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:47:59,613 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-21 01:47:59,614 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-21 01:47:59,614 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_enable_vi [2021-11-21 01:47:59,614 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_enable_vi [2021-11-21 01:47:59,614 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-21 01:47:59,614 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-21 01:47:59,615 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_poll_controller [2021-11-21 01:47:59,615 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_poll_controller [2021-11-21 01:47:59,615 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-21 01:47:59,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-21 01:47:59,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:47:59,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:47:59,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:47:59,616 INFO L130 BoogieDeclarations]: Found specification of procedure reclaimable [2021-11-21 01:47:59,616 INFO L138 BoogieDeclarations]: Found implementation of procedure reclaimable [2021-11-21 01:47:59,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:47:59,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:47:59,617 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-21 01:47:59,617 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-21 01:47:59,617 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_intr_handler [2021-11-21 01:47:59,617 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_intr_handler [2021-11-21 01:47:59,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-21 01:47:59,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-21 01:47:59,618 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2021-11-21 01:47:59,618 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2021-11-21 01:47:59,618 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_bits [2021-11-21 01:47:59,618 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_bits [2021-11-21 01:47:59,619 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-21 01:47:59,619 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-21 01:47:59,619 INFO L130 BoogieDeclarations]: Found specification of procedure qtimer_val [2021-11-21 01:47:59,619 INFO L138 BoogieDeclarations]: Found implementation of procedure qtimer_val [2021-11-21 01:47:59,619 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msix [2021-11-21 01:47:59,620 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msix [2021-11-21 01:47:59,620 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2021-11-21 01:47:59,620 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2021-11-21 01:47:59,620 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 01:47:59,620 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 01:47:59,621 INFO L130 BoogieDeclarations]: Found specification of procedure rspq_next [2021-11-21 01:47:59,621 INFO L138 BoogieDeclarations]: Found implementation of procedure rspq_next [2021-11-21 01:47:59,621 INFO L130 BoogieDeclarations]: Found specification of procedure dump_mbox [2021-11-21 01:47:59,621 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_mbox [2021-11-21 01:47:59,621 INFO L130 BoogieDeclarations]: Found specification of procedure t4_write_reg [2021-11-21 01:47:59,622 INFO L138 BoogieDeclarations]: Found implementation of procedure t4_write_reg [2021-11-21 01:47:59,622 INFO L130 BoogieDeclarations]: Found specification of procedure txq_stop [2021-11-21 01:47:59,622 INFO L138 BoogieDeclarations]: Found implementation of procedure txq_stop [2021-11-21 01:47:59,622 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-21 01:47:59,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-21 01:47:59,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:47:59,623 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 01:47:59,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 01:47:59,623 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-21 01:47:59,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-21 01:47:59,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-21 01:47:59,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-21 01:47:59,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:47:59,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:47:59,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-21 01:47:59,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-21 01:47:59,625 INFO L130 BoogieDeclarations]: Found specification of procedure t4_read_reg64 [2021-11-21 01:47:59,625 INFO L138 BoogieDeclarations]: Found implementation of procedure t4_read_reg64 [2021-11-21 01:47:59,625 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_weight [2021-11-21 01:47:59,625 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_weight [2021-11-21 01:47:59,625 INFO L130 BoogieDeclarations]: Found specification of procedure free_rspq_fl [2021-11-21 01:47:59,626 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rspq_fl [2021-11-21 01:47:59,626 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 01:47:59,626 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 01:47:59,626 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 01:47:59,626 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 01:47:59,627 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-21 01:47:59,627 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-21 01:47:59,627 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:47:59,627 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:47:59,627 INFO L130 BoogieDeclarations]: Found specification of procedure sge_queue_entries [2021-11-21 01:47:59,628 INFO L138 BoogieDeclarations]: Found implementation of procedure sge_queue_entries [2021-11-21 01:47:59,628 INFO L130 BoogieDeclarations]: Found specification of procedure seq_release [2021-11-21 01:47:59,628 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_release [2021-11-21 01:47:59,628 INFO L130 BoogieDeclarations]: Found specification of procedure get_buf_size [2021-11-21 01:47:59,628 INFO L138 BoogieDeclarations]: Found implementation of procedure get_buf_size [2021-11-21 01:47:59,628 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 01:47:59,629 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 01:47:59,629 INFO L130 BoogieDeclarations]: Found specification of procedure __ilog2_u32 [2021-11-21 01:47:59,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __ilog2_u32 [2021-11-21 01:47:59,629 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-21 01:47:59,629 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-21 01:47:59,630 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2021-11-21 01:47:59,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2021-11-21 01:47:59,630 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:47:59,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:47:59,630 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-21 01:47:59,631 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-21 01:47:59,631 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_master [2021-11-21 01:47:59,631 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_master [2021-11-21 01:47:59,631 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-21 01:47:59,631 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-21 01:47:59,632 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_sge_alloc_rxq [2021-11-21 01:47:59,632 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_sge_alloc_rxq [2021-11-21 01:47:59,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:47:59,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:47:59,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:47:59,633 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-21 01:47:59,633 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-21 01:48:01,689 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:48:01,695 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:48:04,122 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:48:26,214 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 01:48:26,357 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:48:30,058 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:48:30,058 INFO L301 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-21 01:48:30,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:48:30 BoogieIcfgContainer [2021-11-21 01:48:30,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:48:30,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:48:30,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:48:30,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:48:30,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:47:45" (1/3) ... [2021-11-21 01:48:30,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d509e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:48:30, skipping insertion in model container [2021-11-21 01:48:30,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:57" (2/3) ... [2021-11-21 01:48:30,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d509e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:48:30, skipping insertion in model container [2021-11-21 01:48:30,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:48:30" (3/3) ... [2021-11-21 01:48:30,083 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2021-11-21 01:48:30,092 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:48:30,093 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-21 01:48:30,188 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:48:30,207 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:48:30,208 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-21 01:48:30,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 3096 states, 1871 states have (on average 1.3003741314804917) internal successors, (2433), 1909 states have internal predecessors, (2433), 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) [2021-11-21 01:48:30,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2021-11-21 01:48:30,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:30,392 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:48:30,393 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:48:30,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:30,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1062756757, now seen corresponding path program 1 times [2021-11-21 01:48:30,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:48:30,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708447001] [2021-11-21 01:48:30,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:30,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:48:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:48:32,362 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13340 trivial. 0 not checked. [2021-11-21 01:48:32,363 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:48:32,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708447001] [2021-11-21 01:48:32,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708447001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:48:32,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:48:32,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:48:32,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425526307] [2021-11-21 01:48:32,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:48:32,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:48:32,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:48:32,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:48:32,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:48:32,431 INFO L87 Difference]: Start difference. First operand has 3096 states, 1871 states have (on average 1.3003741314804917) internal successors, (2433), 1909 states have internal predecessors, (2433), 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) [2021-11-21 01:48:38,553 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:48:43,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:48:43,695 INFO L93 Difference]: Finished difference Result 8954 states and 13097 transitions. [2021-11-21 01:48:43,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:48:43,705 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 [2021-11-21 01:48:43,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:48:43,840 INFO L225 Difference]: With dead ends: 8954 [2021-11-21 01:48:43,841 INFO L226 Difference]: Without dead ends: 5961 [2021-11-21 01:48:43,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:48:43,891 INFO L933 BasicCegarLoop]: 4844 mSDtfsCounter, 4235 mSDsluCounter, 4442 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4235 SdHoareTripleChecker+Valid, 8684 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:48:43,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4235 Valid, 8684 Invalid, 1256 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 1247 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2021-11-21 01:48:43,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5961 states. [2021-11-21 01:48:44,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5961 to 5955. [2021-11-21 01:48:44,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5955 states, 3631 states have (on average 1.2999173781327458) internal successors, (4720), 3702 states have internal predecessors, (4720), 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) [2021-11-21 01:48:44,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5955 states to 5955 states and 8668 transitions. [2021-11-21 01:48:44,836 INFO L78 Accepts]: Start accepts. Automaton has 5955 states and 8668 transitions. Word has length 602 [2021-11-21 01:48:44,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:48:44,840 INFO L470 AbstractCegarLoop]: Abstraction has 5955 states and 8668 transitions. [2021-11-21 01:48:44,841 INFO L471 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) [2021-11-21 01:48:44,841 INFO L276 IsEmpty]: Start isEmpty. Operand 5955 states and 8668 transitions. [2021-11-21 01:48:44,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2021-11-21 01:48:44,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:44,872 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:48:44,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:48:44,873 INFO L402 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)] === [2021-11-21 01:48:44,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:44,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1492756145, now seen corresponding path program 1 times [2021-11-21 01:48:44,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:48:44,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14706536] [2021-11-21 01:48:44,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:44,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:48:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:48:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13340 trivial. 0 not checked. [2021-11-21 01:48:45,862 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:48:45,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14706536] [2021-11-21 01:48:45,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14706536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:48:45,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:48:45,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:48:45,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765702789] [2021-11-21 01:48:45,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:48:45,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:48:45,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:48:45,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:48:45,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:48:45,872 INFO L87 Difference]: Start difference. First operand 5955 states and 8668 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) [2021-11-21 01:48:48,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:48:52,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:48:52,009 INFO L93 Difference]: Finished difference Result 11693 states and 16999 transitions. [2021-11-21 01:48:52,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:48:52,017 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 [2021-11-21 01:48:52,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:48:52,095 INFO L225 Difference]: With dead ends: 11693 [2021-11-21 01:48:52,095 INFO L226 Difference]: Without dead ends: 5855 [2021-11-21 01:48:52,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:48:52,142 INFO L933 BasicCegarLoop]: 3807 mSDtfsCounter, 4203 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4203 SdHoareTripleChecker+Valid, 3996 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:48:52,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4203 Valid, 3996 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-11-21 01:48:52,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5855 states. [2021-11-21 01:48:52,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5855 to 5855. [2021-11-21 01:48:52,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5855 states, 3568 states have (on average 1.298206278026906) internal successors, (4632), 3636 states have internal predecessors, (4632), 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) [2021-11-21 01:48:52,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5855 states to 5855 states and 8504 transitions. [2021-11-21 01:48:52,771 INFO L78 Accepts]: Start accepts. Automaton has 5855 states and 8504 transitions. Word has length 618 [2021-11-21 01:48:52,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:48:52,774 INFO L470 AbstractCegarLoop]: Abstraction has 5855 states and 8504 transitions. [2021-11-21 01:48:52,774 INFO L471 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) [2021-11-21 01:48:52,775 INFO L276 IsEmpty]: Start isEmpty. Operand 5855 states and 8504 transitions. [2021-11-21 01:48:52,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2021-11-21 01:48:52,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:52,806 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:48:52,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:48:52,806 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:48:52,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:52,808 INFO L85 PathProgramCache]: Analyzing trace with hash 929503042, now seen corresponding path program 1 times [2021-11-21 01:48:52,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:48:52,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439092721] [2021-11-21 01:48:52,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:52,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:48:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:48:53,597 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13340 trivial. 0 not checked. [2021-11-21 01:48:53,598 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:48:53,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439092721] [2021-11-21 01:48:53,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439092721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:48:53,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:48:53,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:48:53,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605536394] [2021-11-21 01:48:53,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:48:53,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:48:53,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:48:53,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:48:53,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:48:53,610 INFO L87 Difference]: Start difference. First operand 5855 states and 8504 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) [2021-11-21 01:49:01,151 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:49:05,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:05,324 INFO L93 Difference]: Finished difference Result 15917 states and 23094 transitions. [2021-11-21 01:49:05,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:49:05,325 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 [2021-11-21 01:49:05,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:05,443 INFO L225 Difference]: With dead ends: 15917 [2021-11-21 01:49:05,443 INFO L226 Difference]: Without dead ends: 10197 [2021-11-21 01:49:05,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:49:05,488 INFO L933 BasicCegarLoop]: 4540 mSDtfsCounter, 3184 mSDsluCounter, 4296 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3184 SdHoareTripleChecker+Valid, 8284 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:05,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3184 Valid, 8284 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1253 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2021-11-21 01:49:05,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10197 states. [2021-11-21 01:49:06,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10197 to 10164. [2021-11-21 01:49:06,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10164 states, 6193 states have (on average 1.2980784756983692) internal successors, (8039), 6321 states have internal predecessors, (8039), 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) [2021-11-21 01:49:06,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10164 states to 10164 states and 14727 transitions. [2021-11-21 01:49:06,348 INFO L78 Accepts]: Start accepts. Automaton has 10164 states and 14727 transitions. Word has length 625 [2021-11-21 01:49:06,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:06,351 INFO L470 AbstractCegarLoop]: Abstraction has 10164 states and 14727 transitions. [2021-11-21 01:49:06,353 INFO L471 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) [2021-11-21 01:49:06,353 INFO L276 IsEmpty]: Start isEmpty. Operand 10164 states and 14727 transitions. [2021-11-21 01:49:06,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2021-11-21 01:49:06,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:06,388 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:49:06,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:49:06,389 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:49:06,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:06,390 INFO L85 PathProgramCache]: Analyzing trace with hash -256308535, now seen corresponding path program 1 times [2021-11-21 01:49:06,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:06,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189067696] [2021-11-21 01:49:06,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:06,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:07,358 INFO L134 CoverageAnalysis]: Checked inductivity of 13597 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13597 trivial. 0 not checked. [2021-11-21 01:49:07,358 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:07,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189067696] [2021-11-21 01:49:07,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189067696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:07,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:49:07,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:49:07,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191829365] [2021-11-21 01:49:07,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:07,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:49:07,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:07,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:49:07,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:49:07,365 INFO L87 Difference]: Start difference. First operand 10164 states and 14727 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) [2021-11-21 01:49:16,873 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:49:19,029 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:49:22,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:22,353 INFO L93 Difference]: Finished difference Result 10170 states and 14732 transitions. [2021-11-21 01:49:22,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:49:22,354 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 [2021-11-21 01:49:22,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:22,464 INFO L225 Difference]: With dead ends: 10170 [2021-11-21 01:49:22,464 INFO L226 Difference]: Without dead ends: 10168 [2021-11-21 01:49:22,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:49:22,482 INFO L933 BasicCegarLoop]: 3788 mSDtfsCounter, 4246 mSDsluCounter, 8761 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4261 SdHoareTripleChecker+Valid, 11347 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:22,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4261 Valid, 11347 Invalid, 1827 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1824 Invalid, 2 Unknown, 0 Unchecked, 14.4s Time] [2021-11-21 01:49:22,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10168 states. [2021-11-21 01:49:23,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10168 to 10168. [2021-11-21 01:49:23,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10168 states, 6196 states have (on average 1.2979341510652034) internal successors, (8042), 6324 states have internal predecessors, (8042), 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) [2021-11-21 01:49:23,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10168 states to 10168 states and 14730 transitions. [2021-11-21 01:49:23,608 INFO L78 Accepts]: Start accepts. Automaton has 10168 states and 14730 transitions. Word has length 636 [2021-11-21 01:49:23,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:23,611 INFO L470 AbstractCegarLoop]: Abstraction has 10168 states and 14730 transitions. [2021-11-21 01:49:23,611 INFO L471 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) [2021-11-21 01:49:23,612 INFO L276 IsEmpty]: Start isEmpty. Operand 10168 states and 14730 transitions. [2021-11-21 01:49:23,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2021-11-21 01:49:23,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:23,642 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:49:23,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:49:23,643 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:49:23,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:23,646 INFO L85 PathProgramCache]: Analyzing trace with hash -323246935, now seen corresponding path program 1 times [2021-11-21 01:49:23,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:23,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891218950] [2021-11-21 01:49:23,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:23,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:24,602 INFO L134 CoverageAnalysis]: Checked inductivity of 13599 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13597 trivial. 0 not checked. [2021-11-21 01:49:24,603 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:24,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891218950] [2021-11-21 01:49:24,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891218950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:24,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:49:24,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:49:24,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269923531] [2021-11-21 01:49:24,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:24,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:49:24,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:24,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:49:24,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:49:24,705 INFO L87 Difference]: Start difference. First operand 10168 states and 14730 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, (68), 3 states have call predecessors, (68), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2021-11-21 01:49:33,449 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:49:36,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:36,047 INFO L93 Difference]: Finished difference Result 10174 states and 14735 transitions. [2021-11-21 01:49:36,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:49:36,048 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, (68), 3 states have call predecessors, (68), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) Word has length 641 [2021-11-21 01:49:36,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:36,108 INFO L225 Difference]: With dead ends: 10174 [2021-11-21 01:49:36,108 INFO L226 Difference]: Without dead ends: 10172 [2021-11-21 01:49:36,116 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:49:36,118 INFO L933 BasicCegarLoop]: 3791 mSDtfsCounter, 4241 mSDsluCounter, 8761 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4255 SdHoareTripleChecker+Valid, 11350 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:36,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4255 Valid, 11350 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1825 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2021-11-21 01:49:36,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10172 states. [2021-11-21 01:49:36,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10172 to 10172. [2021-11-21 01:49:36,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10172 states, 6199 states have (on average 1.2977899661235683) internal successors, (8045), 6327 states have internal predecessors, (8045), 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) [2021-11-21 01:49:37,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10172 states to 10172 states and 14733 transitions. [2021-11-21 01:49:37,036 INFO L78 Accepts]: Start accepts. Automaton has 10172 states and 14733 transitions. Word has length 641 [2021-11-21 01:49:37,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:37,038 INFO L470 AbstractCegarLoop]: Abstraction has 10172 states and 14733 transitions. [2021-11-21 01:49:37,038 INFO L471 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, (68), 3 states have call predecessors, (68), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2021-11-21 01:49:37,039 INFO L276 IsEmpty]: Start isEmpty. Operand 10172 states and 14733 transitions. [2021-11-21 01:49:37,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2021-11-21 01:49:37,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:37,060 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:49:37,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:49:37,061 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:49:37,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:37,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1244967287, now seen corresponding path program 1 times [2021-11-21 01:49:37,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:37,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909946724] [2021-11-21 01:49:37,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:37,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 13605 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13601 trivial. 0 not checked. [2021-11-21 01:49:37,852 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:37,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909946724] [2021-11-21 01:49:37,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909946724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:37,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:49:37,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:49:37,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552001001] [2021-11-21 01:49:37,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:37,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:49:37,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:37,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:49:37,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:49:37,856 INFO L87 Difference]: Start difference. First operand 10172 states and 14733 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) [2021-11-21 01:49:47,000 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:49:50,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:50,523 INFO L93 Difference]: Finished difference Result 10390 states and 15024 transitions. [2021-11-21 01:49:50,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:49:50,524 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 [2021-11-21 01:49:50,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:50,579 INFO L225 Difference]: With dead ends: 10390 [2021-11-21 01:49:50,579 INFO L226 Difference]: Without dead ends: 10388 [2021-11-21 01:49:50,585 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:49:50,587 INFO L933 BasicCegarLoop]: 3822 mSDtfsCounter, 4216 mSDsluCounter, 8985 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4231 SdHoareTripleChecker+Valid, 11583 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:50,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4231 Valid, 11583 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1847 Invalid, 1 Unknown, 0 Unchecked, 12.2s Time] [2021-11-21 01:49:50,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10388 states. [2021-11-21 01:49:51,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10388 to 10380. [2021-11-21 01:49:51,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10380 states, 6318 states have (on average 1.297562519784742) internal successors, (8198), 6456 states have internal predecessors, (8198), 3405 states have call successors, (3405), 655 states have call predecessors, (3405), 654 states have return successors, (3407), 3378 states have call predecessors, (3407), 3401 states have call successors, (3407) [2021-11-21 01:49:51,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10380 states to 10380 states and 15010 transitions. [2021-11-21 01:49:51,394 INFO L78 Accepts]: Start accepts. Automaton has 10380 states and 15010 transitions. Word has length 646 [2021-11-21 01:49:51,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:51,396 INFO L470 AbstractCegarLoop]: Abstraction has 10380 states and 15010 transitions. [2021-11-21 01:49:51,396 INFO L471 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) [2021-11-21 01:49:51,396 INFO L276 IsEmpty]: Start isEmpty. Operand 10380 states and 15010 transitions. [2021-11-21 01:49:51,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2021-11-21 01:49:51,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:51,417 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:49:51,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:49:51,418 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:49:51,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:51,419 INFO L85 PathProgramCache]: Analyzing trace with hash 287024417, now seen corresponding path program 1 times [2021-11-21 01:49:51,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:51,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367197989] [2021-11-21 01:49:51,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:51,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:52,311 INFO L134 CoverageAnalysis]: Checked inductivity of 13619 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13613 trivial. 0 not checked. [2021-11-21 01:49:52,311 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:52,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367197989] [2021-11-21 01:49:52,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367197989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:52,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:49:52,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:49:52,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037283920] [2021-11-21 01:49:52,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:52,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:49:52,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:52,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:49:52,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:49:52,315 INFO L87 Difference]: Start difference. First operand 10380 states and 15010 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) [2021-11-21 01:49:55,327 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:03,353 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:05,529 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:08,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:08,015 INFO L93 Difference]: Finished difference Result 10386 states and 15015 transitions. [2021-11-21 01:50:08,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:50:08,020 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 [2021-11-21 01:50:08,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:08,081 INFO L225 Difference]: With dead ends: 10386 [2021-11-21 01:50:08,081 INFO L226 Difference]: Without dead ends: 10384 [2021-11-21 01:50:08,089 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:50:08,090 INFO L933 BasicCegarLoop]: 3791 mSDtfsCounter, 4240 mSDsluCounter, 8761 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4252 SdHoareTripleChecker+Valid, 11350 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:08,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4252 Valid, 11350 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1823 Invalid, 3 Unknown, 0 Unchecked, 15.3s Time] [2021-11-21 01:50:08,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10384 states. [2021-11-21 01:50:08,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10384 to 10384. [2021-11-21 01:50:08,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10384 states, 6321 states have (on average 1.297421294099035) internal successors, (8201), 6459 states have internal predecessors, (8201), 3405 states have call successors, (3405), 656 states have call predecessors, (3405), 655 states have return successors, (3407), 3378 states have call predecessors, (3407), 3401 states have call successors, (3407) [2021-11-21 01:50:09,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10384 states to 10384 states and 15013 transitions. [2021-11-21 01:50:09,042 INFO L78 Accepts]: Start accepts. Automaton has 10384 states and 15013 transitions. Word has length 658 [2021-11-21 01:50:09,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:09,044 INFO L470 AbstractCegarLoop]: Abstraction has 10384 states and 15013 transitions. [2021-11-21 01:50:09,044 INFO L471 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) [2021-11-21 01:50:09,045 INFO L276 IsEmpty]: Start isEmpty. Operand 10384 states and 15013 transitions. [2021-11-21 01:50:09,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2021-11-21 01:50:09,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:09,070 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:50:09,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:50:09,071 INFO L402 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)] === [2021-11-21 01:50:09,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:09,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1682977640, now seen corresponding path program 1 times [2021-11-21 01:50:09,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:09,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254344783] [2021-11-21 01:50:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:09,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:09,823 INFO L134 CoverageAnalysis]: Checked inductivity of 13632 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13624 trivial. 0 not checked. [2021-11-21 01:50:09,823 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:09,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254344783] [2021-11-21 01:50:09,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254344783] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:09,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:09,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:50:09,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978367091] [2021-11-21 01:50:09,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:09,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:50:09,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:09,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:50:09,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:50:09,827 INFO L87 Difference]: Start difference. First operand 10384 states and 15013 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) [2021-11-21 01:50:12,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:14,862 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:23,370 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:25,871 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:28,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:28,412 INFO L93 Difference]: Finished difference Result 10464 states and 15083 transitions. [2021-11-21 01:50:28,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:50:28,413 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 [2021-11-21 01:50:28,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:28,470 INFO L225 Difference]: With dead ends: 10464 [2021-11-21 01:50:28,470 INFO L226 Difference]: Without dead ends: 10462 [2021-11-21 01:50:28,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:50:28,478 INFO L933 BasicCegarLoop]: 3800 mSDtfsCounter, 4189 mSDsluCounter, 8861 mSDsCounter, 0 mSdLazyCounter, 1838 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4200 SdHoareTripleChecker+Valid, 11444 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1838 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:28,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4200 Valid, 11444 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1838 Invalid, 4 Unknown, 0 Unchecked, 18.0s Time] [2021-11-21 01:50:28,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10462 states. [2021-11-21 01:50:29,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10462 to 10460. [2021-11-21 01:50:29,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10460 states, 6366 states have (on average 1.2962613886270813) internal successors, (8252), 6506 states have internal predecessors, (8252), 3413 states have call successors, (3413), 679 states have call predecessors, (3413), 678 states have return successors, (3415), 3386 states have call predecessors, (3415), 3409 states have call successors, (3415) [2021-11-21 01:50:29,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10460 states to 10460 states and 15080 transitions. [2021-11-21 01:50:29,325 INFO L78 Accepts]: Start accepts. Automaton has 10460 states and 15080 transitions. Word has length 662 [2021-11-21 01:50:29,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:29,326 INFO L470 AbstractCegarLoop]: Abstraction has 10460 states and 15080 transitions. [2021-11-21 01:50:29,327 INFO L471 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) [2021-11-21 01:50:29,327 INFO L276 IsEmpty]: Start isEmpty. Operand 10460 states and 15080 transitions. [2021-11-21 01:50:29,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2021-11-21 01:50:29,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:29,351 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 6, 5, 5, 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] [2021-11-21 01:50:29,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:50:29,352 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:50:29,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:29,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1074516951, now seen corresponding path program 1 times [2021-11-21 01:50:29,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:29,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301724425] [2021-11-21 01:50:29,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:29,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 13647 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13637 trivial. 0 not checked. [2021-11-21 01:50:30,195 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:30,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301724425] [2021-11-21 01:50:30,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301724425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:30,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:30,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:50:30,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277560220] [2021-11-21 01:50:30,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:30,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:50:30,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:30,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:50:30,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:50:30,200 INFO L87 Difference]: Start difference. First operand 10460 states and 15080 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, (72), 3 states have call predecessors, (72), 1 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2021-11-21 01:50:33,252 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:41,512 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:44,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:44,572 INFO L93 Difference]: Finished difference Result 11192 states and 15987 transitions. [2021-11-21 01:50:44,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:50:44,573 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, (72), 3 states have call predecessors, (72), 1 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) Word has length 661 [2021-11-21 01:50:44,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:44,632 INFO L225 Difference]: With dead ends: 11192 [2021-11-21 01:50:44,632 INFO L226 Difference]: Without dead ends: 11190 [2021-11-21 01:50:44,641 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:50:44,642 INFO L933 BasicCegarLoop]: 3877 mSDtfsCounter, 4038 mSDsluCounter, 9396 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4053 SdHoareTripleChecker+Valid, 11985 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:44,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4053 Valid, 11985 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1922 Invalid, 2 Unknown, 0 Unchecked, 13.9s Time] [2021-11-21 01:50:44,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11190 states. [2021-11-21 01:50:45,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11190 to 11182. [2021-11-21 01:50:45,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11182 states, 6767 states have (on average 1.2911186641052166) internal successors, (8737), 6931 states have internal predecessors, (8737), 3617 states have call successors, (3617), 796 states have call predecessors, (3617), 795 states have return successors, (3619), 3590 states have call predecessors, (3619), 3613 states have call successors, (3619) [2021-11-21 01:50:45,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11182 states to 11182 states and 15973 transitions. [2021-11-21 01:50:45,666 INFO L78 Accepts]: Start accepts. Automaton has 11182 states and 15973 transitions. Word has length 661 [2021-11-21 01:50:45,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:45,667 INFO L470 AbstractCegarLoop]: Abstraction has 11182 states and 15973 transitions. [2021-11-21 01:50:45,667 INFO L471 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, (72), 3 states have call predecessors, (72), 1 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2021-11-21 01:50:45,667 INFO L276 IsEmpty]: Start isEmpty. Operand 11182 states and 15973 transitions. [2021-11-21 01:50:45,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2021-11-21 01:50:45,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:45,693 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 7, 6, 6, 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] [2021-11-21 01:50:45,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:50:45,694 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:50:45,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:45,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1588581897, now seen corresponding path program 1 times [2021-11-21 01:50:45,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:45,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734384000] [2021-11-21 01:50:45,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:45,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:46,425 INFO L134 CoverageAnalysis]: Checked inductivity of 13669 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 13657 trivial. 0 not checked. [2021-11-21 01:50:46,426 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:46,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734384000] [2021-11-21 01:50:46,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734384000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:46,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:46,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:50:46,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328984753] [2021-11-21 01:50:46,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:46,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:50:46,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:46,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:50:46,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:50:46,430 INFO L87 Difference]: Start difference. First operand 11182 states and 15973 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, (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) [2021-11-21 01:50:57,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:57,164 INFO L93 Difference]: Finished difference Result 11188 states and 15978 transitions. [2021-11-21 01:50:57,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:50:57,165 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, (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 666 [2021-11-21 01:50:57,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:57,220 INFO L225 Difference]: With dead ends: 11188 [2021-11-21 01:50:57,220 INFO L226 Difference]: Without dead ends: 11186 [2021-11-21 01:50:57,226 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:50:57,227 INFO L933 BasicCegarLoop]: 3791 mSDtfsCounter, 4241 mSDsluCounter, 8761 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4250 SdHoareTripleChecker+Valid, 11350 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:57,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4250 Valid, 11350 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2021-11-21 01:50:57,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11186 states. [2021-11-21 01:50:58,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11186 to 11186. [2021-11-21 01:50:58,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11186 states, 6770 states have (on average 1.2909896602658788) internal successors, (8740), 6934 states have internal predecessors, (8740), 3617 states have call successors, (3617), 797 states have call predecessors, (3617), 796 states have return successors, (3619), 3590 states have call predecessors, (3619), 3613 states have call successors, (3619) [2021-11-21 01:50:58,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11186 states to 11186 states and 15976 transitions. [2021-11-21 01:50:58,196 INFO L78 Accepts]: Start accepts. Automaton has 11186 states and 15976 transitions. Word has length 666 [2021-11-21 01:50:58,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:58,197 INFO L470 AbstractCegarLoop]: Abstraction has 11186 states and 15976 transitions. [2021-11-21 01:50:58,197 INFO L471 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, (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) [2021-11-21 01:50:58,198 INFO L276 IsEmpty]: Start isEmpty. Operand 11186 states and 15976 transitions. [2021-11-21 01:50:58,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2021-11-21 01:50:58,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:58,226 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 8, 7, 7, 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] [2021-11-21 01:50:58,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:50:58,227 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:50:58,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:58,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1640992791, now seen corresponding path program 1 times [2021-11-21 01:50:58,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:58,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430848174] [2021-11-21 01:50:58,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:58,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:58,929 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13681 trivial. 0 not checked. [2021-11-21 01:50:58,930 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:58,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430848174] [2021-11-21 01:50:58,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430848174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:58,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:58,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:50:58,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394406198] [2021-11-21 01:50:58,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:58,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:50:58,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:58,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:50:58,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:50:58,935 INFO L87 Difference]: Start difference. First operand 11186 states and 15976 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, (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) [2021-11-21 01:51:01,954 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:10,591 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:13,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:51:13,880 INFO L93 Difference]: Finished difference Result 11200 states and 15993 transitions. [2021-11-21 01:51:13,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:51:13,881 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, (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 671 [2021-11-21 01:51:13,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:51:13,932 INFO L225 Difference]: With dead ends: 11200 [2021-11-21 01:51:13,932 INFO L226 Difference]: Without dead ends: 11198 [2021-11-21 01:51:13,941 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:51:13,942 INFO L933 BasicCegarLoop]: 3877 mSDtfsCounter, 4038 mSDsluCounter, 9396 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4051 SdHoareTripleChecker+Valid, 11985 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:51:13,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4051 Valid, 11985 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1922 Invalid, 2 Unknown, 0 Unchecked, 14.3s Time] [2021-11-21 01:51:13,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11198 states. [2021-11-21 01:51:14,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11198 to 11190. [2021-11-21 01:51:14,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11190 states, 6773 states have (on average 1.29086077070722) internal successors, (8743), 6937 states have internal predecessors, (8743), 3617 states have call successors, (3617), 798 states have call predecessors, (3617), 797 states have return successors, (3619), 3590 states have call predecessors, (3619), 3613 states have call successors, (3619) [2021-11-21 01:51:14,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11190 states to 11190 states and 15979 transitions. [2021-11-21 01:51:14,786 INFO L78 Accepts]: Start accepts. Automaton has 11190 states and 15979 transitions. Word has length 671 [2021-11-21 01:51:14,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:51:14,788 INFO L470 AbstractCegarLoop]: Abstraction has 11190 states and 15979 transitions. [2021-11-21 01:51:14,788 INFO L471 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, (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) [2021-11-21 01:51:14,788 INFO L276 IsEmpty]: Start isEmpty. Operand 11190 states and 15979 transitions. [2021-11-21 01:51:14,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2021-11-21 01:51:14,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:51:14,818 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 9, 8, 8, 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] [2021-11-21 01:51:14,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 01:51:14,819 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:51:14,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:51:14,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1457985176, now seen corresponding path program 1 times [2021-11-21 01:51:14,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:51:14,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256747600] [2021-11-21 01:51:14,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:14,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:51:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:15,653 INFO L134 CoverageAnalysis]: Checked inductivity of 13728 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13712 trivial. 0 not checked. [2021-11-21 01:51:15,654 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:51:15,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256747600] [2021-11-21 01:51:15,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256747600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:51:15,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:51:15,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:51:15,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299859090] [2021-11-21 01:51:15,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:51:15,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:51:15,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:51:15,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:51:15,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:51:15,658 INFO L87 Difference]: Start difference. First operand 11190 states and 15979 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, (78), 3 states have call predecessors, (78), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2021-11-21 01:51:24,990 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:28,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:51:28,716 INFO L93 Difference]: Finished difference Result 11204 states and 15996 transitions. [2021-11-21 01:51:28,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:51:28,717 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, (78), 3 states have call predecessors, (78), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) Word has length 682 [2021-11-21 01:51:28,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:51:28,752 INFO L225 Difference]: With dead ends: 11204 [2021-11-21 01:51:28,752 INFO L226 Difference]: Without dead ends: 11202 [2021-11-21 01:51:28,758 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:51:28,759 INFO L933 BasicCegarLoop]: 3822 mSDtfsCounter, 4215 mSDsluCounter, 8985 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4224 SdHoareTripleChecker+Valid, 11583 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:51:28,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4224 Valid, 11583 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1847 Invalid, 1 Unknown, 0 Unchecked, 12.5s Time] [2021-11-21 01:51:28,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11202 states. [2021-11-21 01:51:29,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11202 to 11194. [2021-11-21 01:51:29,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11194 states, 6776 states have (on average 1.2907319952774499) internal successors, (8746), 6940 states have internal predecessors, (8746), 3617 states have call successors, (3617), 799 states have call predecessors, (3617), 798 states have return successors, (3619), 3590 states have call predecessors, (3619), 3613 states have call successors, (3619) [2021-11-21 01:51:29,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11194 states to 11194 states and 15982 transitions. [2021-11-21 01:51:29,743 INFO L78 Accepts]: Start accepts. Automaton has 11194 states and 15982 transitions. Word has length 682 [2021-11-21 01:51:29,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:51:29,745 INFO L470 AbstractCegarLoop]: Abstraction has 11194 states and 15982 transitions. [2021-11-21 01:51:29,745 INFO L471 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, (78), 3 states have call predecessors, (78), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2021-11-21 01:51:29,745 INFO L276 IsEmpty]: Start isEmpty. Operand 11194 states and 15982 transitions. [2021-11-21 01:51:29,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2021-11-21 01:51:29,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:51:29,784 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 10, 9, 9, 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] [2021-11-21 01:51:29,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 01:51:29,785 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:51:29,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:51:29,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1522556986, now seen corresponding path program 1 times [2021-11-21 01:51:29,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:51:29,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099002594] [2021-11-21 01:51:29,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:29,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:51:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:30,499 INFO L134 CoverageAnalysis]: Checked inductivity of 13762 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13744 trivial. 0 not checked. [2021-11-21 01:51:30,500 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:51:30,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099002594] [2021-11-21 01:51:30,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099002594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:51:30,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:51:30,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:51:30,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598153461] [2021-11-21 01:51:30,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:51:30,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:51:30,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:51:30,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:51:30,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:51:30,504 INFO L87 Difference]: Start difference. First operand 11194 states and 15982 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, (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) [2021-11-21 01:51:39,394 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:42,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:51:42,355 INFO L93 Difference]: Finished difference Result 11200 states and 15987 transitions. [2021-11-21 01:51:42,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:51:42,356 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, (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 687 [2021-11-21 01:51:42,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:51:42,402 INFO L225 Difference]: With dead ends: 11200 [2021-11-21 01:51:42,402 INFO L226 Difference]: Without dead ends: 11198 [2021-11-21 01:51:42,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:51:42,410 INFO L933 BasicCegarLoop]: 3791 mSDtfsCounter, 4240 mSDsluCounter, 8761 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4246 SdHoareTripleChecker+Valid, 11350 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:51:42,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4246 Valid, 11350 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1825 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2021-11-21 01:51:42,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11198 states. [2021-11-21 01:51:43,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11198 to 11198. [2021-11-21 01:51:43,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11198 states, 6779 states have (on average 1.290603333825048) internal successors, (8749), 6943 states have internal predecessors, (8749), 3617 states have call successors, (3617), 800 states have call predecessors, (3617), 799 states have return successors, (3619), 3590 states have call predecessors, (3619), 3613 states have call successors, (3619) [2021-11-21 01:51:43,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11198 states to 11198 states and 15985 transitions. [2021-11-21 01:51:43,324 INFO L78 Accepts]: Start accepts. Automaton has 11198 states and 15985 transitions. Word has length 687 [2021-11-21 01:51:43,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:51:43,326 INFO L470 AbstractCegarLoop]: Abstraction has 11198 states and 15985 transitions. [2021-11-21 01:51:43,326 INFO L471 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, (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) [2021-11-21 01:51:43,326 INFO L276 IsEmpty]: Start isEmpty. Operand 11198 states and 15985 transitions. [2021-11-21 01:51:43,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2021-11-21 01:51:43,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:51:43,357 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 11, 10, 10, 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] [2021-11-21 01:51:43,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 01:51:43,357 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:51:43,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:51:43,358 INFO L85 PathProgramCache]: Analyzing trace with hash 2094719896, now seen corresponding path program 1 times [2021-11-21 01:51:43,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:51:43,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013359827] [2021-11-21 01:51:43,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:43,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:51:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 13800 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 13780 trivial. 0 not checked. [2021-11-21 01:51:44,086 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:51:44,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013359827] [2021-11-21 01:51:44,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013359827] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:51:44,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:51:44,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:51:44,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831045167] [2021-11-21 01:51:44,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:51:44,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:51:44,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:51:44,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:51:44,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:51:44,090 INFO L87 Difference]: Start difference. First operand 11198 states and 15985 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, (80), 3 states have call predecessors, (80), 1 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2021-11-21 01:51:53,150 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:56,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:51:56,340 INFO L93 Difference]: Finished difference Result 11212 states and 16002 transitions. [2021-11-21 01:51:56,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:51:56,340 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, (80), 3 states have call predecessors, (80), 1 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) Word has length 692 [2021-11-21 01:51:56,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:51:56,373 INFO L225 Difference]: With dead ends: 11212 [2021-11-21 01:51:56,374 INFO L226 Difference]: Without dead ends: 11210 [2021-11-21 01:51:56,380 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:51:56,381 INFO L933 BasicCegarLoop]: 3822 mSDtfsCounter, 4215 mSDsluCounter, 8985 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4222 SdHoareTripleChecker+Valid, 11583 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:51:56,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4222 Valid, 11583 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1847 Invalid, 1 Unknown, 0 Unchecked, 11.6s Time] [2021-11-21 01:51:56,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11210 states. [2021-11-21 01:51:57,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11210 to 11202. [2021-11-21 01:51:57,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11202 states, 6782 states have (on average 1.2904747861987613) internal successors, (8752), 6946 states have internal predecessors, (8752), 3617 states have call successors, (3617), 801 states have call predecessors, (3617), 800 states have return successors, (3619), 3590 states have call predecessors, (3619), 3613 states have call successors, (3619) [2021-11-21 01:51:57,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11202 states to 11202 states and 15988 transitions. [2021-11-21 01:51:57,138 INFO L78 Accepts]: Start accepts. Automaton has 11202 states and 15988 transitions. Word has length 692 [2021-11-21 01:51:57,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:51:57,139 INFO L470 AbstractCegarLoop]: Abstraction has 11202 states and 15988 transitions. [2021-11-21 01:51:57,139 INFO L471 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, (80), 3 states have call predecessors, (80), 1 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2021-11-21 01:51:57,139 INFO L276 IsEmpty]: Start isEmpty. Operand 11202 states and 15988 transitions. [2021-11-21 01:51:57,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2021-11-21 01:51:57,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:51:57,165 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:51:57,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-21 01:51:57,166 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:51:57,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:51:57,166 INFO L85 PathProgramCache]: Analyzing trace with hash -966860102, now seen corresponding path program 1 times [2021-11-21 01:51:57,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:51:57,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761941682] [2021-11-21 01:51:57,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:57,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:51:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:57,730 INFO L134 CoverageAnalysis]: Checked inductivity of 13842 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13820 trivial. 0 not checked. [2021-11-21 01:51:57,731 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:51:57,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761941682] [2021-11-21 01:51:57,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761941682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:51:57,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:51:57,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:51:57,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315464349] [2021-11-21 01:51:57,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:51:57,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:51:57,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:51:57,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:51:57,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:51:57,734 INFO L87 Difference]: Start difference. First operand 11202 states and 15988 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) [2021-11-21 01:52:00,595 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:52:08,680 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:52:10,821 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:52:13,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:52:13,478 INFO L93 Difference]: Finished difference Result 11216 states and 16005 transitions. [2021-11-21 01:52:13,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:52:13,479 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 [2021-11-21 01:52:13,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:52:13,511 INFO L225 Difference]: With dead ends: 11216 [2021-11-21 01:52:13,512 INFO L226 Difference]: Without dead ends: 11214 [2021-11-21 01:52:13,518 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:52:13,519 INFO L933 BasicCegarLoop]: 3822 mSDtfsCounter, 4215 mSDsluCounter, 8985 mSDsCounter, 0 mSdLazyCounter, 1845 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4221 SdHoareTripleChecker+Valid, 11583 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1845 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:52:13,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4221 Valid, 11583 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1845 Invalid, 3 Unknown, 0 Unchecked, 15.2s Time] [2021-11-21 01:52:13,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11214 states. [2021-11-21 01:52:14,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11214 to 11206. [2021-11-21 01:52:14,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11206 states, 6785 states have (on average 1.290346352247605) internal successors, (8755), 6949 states have internal predecessors, (8755), 3617 states have call successors, (3617), 802 states have call predecessors, (3617), 801 states have return successors, (3619), 3590 states have call predecessors, (3619), 3613 states have call successors, (3619) [2021-11-21 01:52:14,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11206 states to 11206 states and 15991 transitions. [2021-11-21 01:52:14,257 INFO L78 Accepts]: Start accepts. Automaton has 11206 states and 15991 transitions. Word has length 697 [2021-11-21 01:52:14,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:52:14,258 INFO L470 AbstractCegarLoop]: Abstraction has 11206 states and 15991 transitions. [2021-11-21 01:52:14,258 INFO L471 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) [2021-11-21 01:52:14,258 INFO L276 IsEmpty]: Start isEmpty. Operand 11206 states and 15991 transitions. [2021-11-21 01:52:14,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2021-11-21 01:52:14,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:52:14,271 INFO L514 BasicCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 13, 12, 12, 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] [2021-11-21 01:52:14,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-21 01:52:14,272 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:52:14,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:52:14,272 INFO L85 PathProgramCache]: Analyzing trace with hash -300798063, now seen corresponding path program 1 times [2021-11-21 01:52:14,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:52:14,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755361997] [2021-11-21 01:52:14,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:52:14,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:52:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:52:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 13889 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 13865 trivial. 0 not checked. [2021-11-21 01:52:14,854 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:52:14,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755361997] [2021-11-21 01:52:14,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755361997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:52:14,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:52:14,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:52:14,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038986553] [2021-11-21 01:52:14,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:52:14,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:52:14,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:52:14,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:52:14,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:52:14,859 INFO L87 Difference]: Start difference. First operand 11206 states and 15991 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, (82), 3 states have call predecessors, (82), 1 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2021-11-21 01:52:23,854 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:52:26,027 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:52:28,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:52:28,716 INFO L93 Difference]: Finished difference Result 11220 states and 16008 transitions. [2021-11-21 01:52:28,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:52:28,717 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, (82), 3 states have call predecessors, (82), 1 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 703 [2021-11-21 01:52:28,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:52:28,742 INFO L225 Difference]: With dead ends: 11220 [2021-11-21 01:52:28,742 INFO L226 Difference]: Without dead ends: 11218 [2021-11-21 01:52:28,745 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:52:28,745 INFO L933 BasicCegarLoop]: 3822 mSDtfsCounter, 4215 mSDsluCounter, 8985 mSDsCounter, 0 mSdLazyCounter, 1846 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4220 SdHoareTripleChecker+Valid, 11583 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1846 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:52:28,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4220 Valid, 11583 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1846 Invalid, 2 Unknown, 0 Unchecked, 13.1s Time] [2021-11-21 01:52:28,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11218 states. [2021-11-21 01:52:29,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11218 to 11210. [2021-11-21 01:52:29,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11210 states, 6788 states have (on average 1.2902180318208603) internal successors, (8758), 6952 states have internal predecessors, (8758), 3617 states have call successors, (3617), 803 states have call predecessors, (3617), 802 states have return successors, (3619), 3590 states have call predecessors, (3619), 3613 states have call successors, (3619) [2021-11-21 01:52:29,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11210 states to 11210 states and 15994 transitions. [2021-11-21 01:52:29,345 INFO L78 Accepts]: Start accepts. Automaton has 11210 states and 15994 transitions. Word has length 703 [2021-11-21 01:52:29,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:52:29,346 INFO L470 AbstractCegarLoop]: Abstraction has 11210 states and 15994 transitions. [2021-11-21 01:52:29,346 INFO L471 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, (82), 3 states have call predecessors, (82), 1 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2021-11-21 01:52:29,347 INFO L276 IsEmpty]: Start isEmpty. Operand 11210 states and 15994 transitions. [2021-11-21 01:52:29,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2021-11-21 01:52:29,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:52:29,363 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:52:29,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-21 01:52:29,364 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:52:29,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:52:29,365 INFO L85 PathProgramCache]: Analyzing trace with hash 606034401, now seen corresponding path program 1 times [2021-11-21 01:52:29,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:52:29,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504364423] [2021-11-21 01:52:29,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:52:29,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:52:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:52:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 13939 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 13913 trivial. 0 not checked. [2021-11-21 01:52:29,946 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:52:29,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504364423] [2021-11-21 01:52:29,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504364423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:52:29,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:52:29,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:52:29,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79000720] [2021-11-21 01:52:29,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:52:29,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:52:29,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:52:29,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:52:29,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:52:29,949 INFO L87 Difference]: Start difference. First operand 11210 states and 15994 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) [2021-11-21 01:52:38,658 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:52:42,249 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:52:45,628 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:52:49,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:52:49,746 INFO L93 Difference]: Finished difference Result 22291 states and 31799 transitions. [2021-11-21 01:52:49,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:52:49,747 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 [2021-11-21 01:52:49,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:52:49,816 INFO L225 Difference]: With dead ends: 22291 [2021-11-21 01:52:49,816 INFO L226 Difference]: Without dead ends: 22289 [2021-11-21 01:52:49,827 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:52:49,828 INFO L933 BasicCegarLoop]: 4746 mSDtfsCounter, 4240 mSDsluCounter, 14885 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4242 SdHoareTripleChecker+Valid, 17833 SdHoareTripleChecker+Invalid, 2425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:52:49,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4242 Valid, 17833 Invalid, 2425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2420 Invalid, 3 Unknown, 0 Unchecked, 18.6s Time] [2021-11-21 01:52:49,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22289 states. [2021-11-21 01:52:51,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22289 to 22275. [2021-11-21 01:52:51,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22275 states, 13499 states have (on average 1.2917993925475961) internal successors, (17438), 13829 states have internal predecessors, (17438), 7172 states have call successors, (7172), 1603 states have call predecessors, (7172), 1601 states have return successors, (7176), 7114 states have call predecessors, (7176), 7164 states have call successors, (7176) [2021-11-21 01:52:51,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22275 states to 22275 states and 31786 transitions. [2021-11-21 01:52:51,206 INFO L78 Accepts]: Start accepts. Automaton has 22275 states and 31786 transitions. Word has length 708 [2021-11-21 01:52:51,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:52:51,208 INFO L470 AbstractCegarLoop]: Abstraction has 22275 states and 31786 transitions. [2021-11-21 01:52:51,208 INFO L471 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) [2021-11-21 01:52:51,208 INFO L276 IsEmpty]: Start isEmpty. Operand 22275 states and 31786 transitions. [2021-11-21 01:52:51,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 714 [2021-11-21 01:52:51,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:52:51,221 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:52:51,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-21 01:52:51,222 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:52:51,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:52:51,222 INFO L85 PathProgramCache]: Analyzing trace with hash -497206959, now seen corresponding path program 1 times [2021-11-21 01:52:51,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:52:51,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915552963] [2021-11-21 01:52:51,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:52:51,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:52:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:52:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 13993 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 13965 trivial. 0 not checked. [2021-11-21 01:52:51,817 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:52:51,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915552963] [2021-11-21 01:52:51,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915552963] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:52:51,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:52:51,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:52:51,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194948199] [2021-11-21 01:52:51,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:52:51,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:52:51,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:52:51,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:52:51,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:52:51,823 INFO L87 Difference]: Start difference. First operand 22275 states and 31786 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) [2021-11-21 01:52:58,595 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:53:02,086 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:53:05,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:53:12,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:53:12,740 INFO L93 Difference]: Finished difference Result 43889 states and 62663 transitions. [2021-11-21 01:53:12,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:53:12,748 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 [2021-11-21 01:53:12,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:53:12,905 INFO L225 Difference]: With dead ends: 43889 [2021-11-21 01:53:12,905 INFO L226 Difference]: Without dead ends: 43885 [2021-11-21 01:53:12,929 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:53:12,930 INFO L933 BasicCegarLoop]: 4823 mSDtfsCounter, 4203 mSDsluCounter, 15054 mSDsCounter, 0 mSdLazyCounter, 2454 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4206 SdHoareTripleChecker+Valid, 18059 SdHoareTripleChecker+Invalid, 2460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2454 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:53:12,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4206 Valid, 18059 Invalid, 2460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2454 Invalid, 3 Unknown, 0 Unchecked, 18.8s Time] [2021-11-21 01:53:12,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43885 states. [2021-11-21 01:53:15,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43885 to 43871. [2021-11-21 01:53:15,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43871 states, 26619 states have (on average 1.2927232427964988) internal successors, (34411), 27264 states have internal predecessors, (34411), 14110 states have call successors, (14110), 3144 states have call predecessors, (14110), 3139 states have return successors, (14126), 13986 states have call predecessors, (14126), 14094 states have call successors, (14126) [2021-11-21 01:53:16,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43871 states to 43871 states and 62647 transitions. [2021-11-21 01:53:16,119 INFO L78 Accepts]: Start accepts. Automaton has 43871 states and 62647 transitions. Word has length 713 [2021-11-21 01:53:16,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:53:16,120 INFO L470 AbstractCegarLoop]: Abstraction has 43871 states and 62647 transitions. [2021-11-21 01:53:16,120 INFO L471 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) [2021-11-21 01:53:16,120 INFO L276 IsEmpty]: Start isEmpty. Operand 43871 states and 62647 transitions. [2021-11-21 01:53:16,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2021-11-21 01:53:16,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:53:16,133 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:53:16,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-21 01:53:16,134 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:53:16,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:53:16,134 INFO L85 PathProgramCache]: Analyzing trace with hash -866543686, now seen corresponding path program 1 times [2021-11-21 01:53:16,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:53:16,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180868062] [2021-11-21 01:53:16,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:53:16,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:53:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:53:16,792 INFO L134 CoverageAnalysis]: Checked inductivity of 14050 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 14020 trivial. 0 not checked. [2021-11-21 01:53:16,792 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:53:16,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180868062] [2021-11-21 01:53:16,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180868062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:53:16,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:53:16,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:53:16,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268253733] [2021-11-21 01:53:16,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:53:16,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:53:16,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:53:16,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:53:16,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:53:16,795 INFO L87 Difference]: Start difference. First operand 43871 states and 62647 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) [2021-11-21 01:53:26,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:53:30,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:53:30,928 INFO L93 Difference]: Finished difference Result 43901 states and 62684 transitions. [2021-11-21 01:53:30,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:53:30,928 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 [2021-11-21 01:53:30,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:53:31,123 INFO L225 Difference]: With dead ends: 43901 [2021-11-21 01:53:31,124 INFO L226 Difference]: Without dead ends: 43768 [2021-11-21 01:53:31,146 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:53:31,147 INFO L933 BasicCegarLoop]: 3823 mSDtfsCounter, 4215 mSDsluCounter, 8987 mSDsCounter, 0 mSdLazyCounter, 1844 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4217 SdHoareTripleChecker+Valid, 11586 SdHoareTripleChecker+Invalid, 1846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1844 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:53:31,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4217 Valid, 11586 Invalid, 1846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1844 Invalid, 1 Unknown, 0 Unchecked, 11.9s Time] [2021-11-21 01:53:31,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43768 states. [2021-11-21 01:53:34,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43768 to 43766. [2021-11-21 01:53:34,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43766 states, 26569 states have (on average 1.2931235650570214) internal successors, (34357), 27212 states have internal predecessors, (34357), 14073 states have call successors, (14073), 3121 states have call predecessors, (14073), 3121 states have return successors, (14101), 13956 states have call predecessors, (14101), 14061 states have call successors, (14101) [2021-11-21 01:53:34,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43766 states to 43766 states and 62531 transitions. [2021-11-21 01:53:34,567 INFO L78 Accepts]: Start accepts. Automaton has 43766 states and 62531 transitions. Word has length 717 [2021-11-21 01:53:34,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:53:34,568 INFO L470 AbstractCegarLoop]: Abstraction has 43766 states and 62531 transitions. [2021-11-21 01:53:34,568 INFO L471 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) [2021-11-21 01:53:34,569 INFO L276 IsEmpty]: Start isEmpty. Operand 43766 states and 62531 transitions. [2021-11-21 01:53:34,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2021-11-21 01:53:34,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:53:34,615 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:53:34,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-21 01:53:34,615 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:53:34,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:53:34,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1006489269, now seen corresponding path program 1 times [2021-11-21 01:53:34,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:53:34,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637662774] [2021-11-21 01:53:34,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:53:34,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:53:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:53:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 14523 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14514 trivial. 0 not checked. [2021-11-21 01:53:35,416 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:53:35,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637662774] [2021-11-21 01:53:35,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637662774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:53:35,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:53:35,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:53:35,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951172149] [2021-11-21 01:53:35,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:53:35,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:53:35,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:53:35,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:53:35,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:53:35,419 INFO L87 Difference]: Start difference. First operand 43766 states and 62531 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) [2021-11-21 01:53:42,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:53:44,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:53:50,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:53:50,427 INFO L93 Difference]: Finished difference Result 80313 states and 114689 transitions. [2021-11-21 01:53:50,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:53:50,427 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 [2021-11-21 01:53:50,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:53:50,682 INFO L225 Difference]: With dead ends: 80313 [2021-11-21 01:53:50,682 INFO L226 Difference]: Without dead ends: 36682 [2021-11-21 01:53:50,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:53:50,845 INFO L933 BasicCegarLoop]: 5618 mSDtfsCounter, 2933 mSDsluCounter, 4334 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2935 SdHoareTripleChecker+Valid, 9368 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:53:50,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2935 Valid, 9368 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1505 Invalid, 2 Unknown, 0 Unchecked, 12.6s Time] [2021-11-21 01:53:50,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36682 states. [2021-11-21 01:53:53,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36682 to 36449. [2021-11-21 01:53:53,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36449 states, 22044 states have (on average 1.2935039012883325) internal successors, (28514), 22594 states have internal predecessors, (28514), 11724 states have call successors, (11724), 2682 states have call predecessors, (11724), 2678 states have return successors, (11748), 11595 states have call predecessors, (11748), 11712 states have call successors, (11748) [2021-11-21 01:53:53,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36449 states to 36449 states and 51986 transitions. [2021-11-21 01:53:53,697 INFO L78 Accepts]: Start accepts. Automaton has 36449 states and 51986 transitions. Word has length 820 [2021-11-21 01:53:53,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:53:53,698 INFO L470 AbstractCegarLoop]: Abstraction has 36449 states and 51986 transitions. [2021-11-21 01:53:53,698 INFO L471 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) [2021-11-21 01:53:53,698 INFO L276 IsEmpty]: Start isEmpty. Operand 36449 states and 51986 transitions. [2021-11-21 01:53:53,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 893 [2021-11-21 01:53:53,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:53:53,732 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:53:53,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-21 01:53:53,732 INFO L402 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)] === [2021-11-21 01:53:53,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:53:53,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1570415728, now seen corresponding path program 1 times [2021-11-21 01:53:53,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:53:53,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600032162] [2021-11-21 01:53:53,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:53:53,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:53:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:53:54,742 INFO L134 CoverageAnalysis]: Checked inductivity of 15533 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 15518 trivial. 0 not checked. [2021-11-21 01:53:54,742 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:53:54,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600032162] [2021-11-21 01:53:54,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600032162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:53:54,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:53:54,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:53:54,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232534209] [2021-11-21 01:53:54,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:53:54,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:53:54,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:53:54,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:53:54,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:53:54,746 INFO L87 Difference]: Start difference. First operand 36449 states and 51986 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) [2021-11-21 01:53:58,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:54:04,264 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:54:10,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:54:10,751 INFO L93 Difference]: Finished difference Result 85609 states and 122048 transitions. [2021-11-21 01:54:10,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:54:10,752 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 [2021-11-21 01:54:10,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:54:11,036 INFO L225 Difference]: With dead ends: 85609 [2021-11-21 01:54:11,037 INFO L226 Difference]: Without dead ends: 49950 [2021-11-21 01:54:11,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:54:11,116 INFO L933 BasicCegarLoop]: 6270 mSDtfsCounter, 2922 mSDsluCounter, 4334 mSDsCounter, 0 mSdLazyCounter, 1693 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2924 SdHoareTripleChecker+Valid, 10020 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1693 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:54:11,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2924 Valid, 10020 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1693 Invalid, 2 Unknown, 0 Unchecked, 13.0s Time] [2021-11-21 01:54:11,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49950 states. [2021-11-21 01:54:14,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49950 to 49717. [2021-11-21 01:54:14,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49717 states, 30032 states have (on average 1.2940197123068726) internal successors, (38862), 30796 states have internal predecessors, (38862), 16000 states have call successors, (16000), 3688 states have call predecessors, (16000), 3682 states have return successors, (16040), 15811 states have call predecessors, (16040), 15988 states have call successors, (16040) [2021-11-21 01:54:14,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49717 states to 49717 states and 70902 transitions. [2021-11-21 01:54:14,555 INFO L78 Accepts]: Start accepts. Automaton has 49717 states and 70902 transitions. Word has length 892 [2021-11-21 01:54:14,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:54:14,555 INFO L470 AbstractCegarLoop]: Abstraction has 49717 states and 70902 transitions. [2021-11-21 01:54:14,556 INFO L471 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) [2021-11-21 01:54:14,556 INFO L276 IsEmpty]: Start isEmpty. Operand 49717 states and 70902 transitions. [2021-11-21 01:54:14,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2021-11-21 01:54:14,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:54:14,590 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:54:14,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-21 01:54:14,590 INFO L402 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)] === [2021-11-21 01:54:14,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:54:14,591 INFO L85 PathProgramCache]: Analyzing trace with hash 888497781, now seen corresponding path program 1 times [2021-11-21 01:54:14,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:54:14,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557990359] [2021-11-21 01:54:14,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:54:14,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:54:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:54:15,244 INFO L134 CoverageAnalysis]: Checked inductivity of 16023 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16001 trivial. 0 not checked. [2021-11-21 01:54:15,250 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:54:15,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557990359] [2021-11-21 01:54:15,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557990359] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:54:15,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:54:15,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:54:15,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351801012] [2021-11-21 01:54:15,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:54:15,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:54:15,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:54:15,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:54:15,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:54:15,259 INFO L87 Difference]: Start difference. First operand 49717 states and 70902 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) [2021-11-21 01:54:27,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:54:29,786 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:54:47,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:54:47,528 INFO L93 Difference]: Finished difference Result 163735 states and 245564 transitions. [2021-11-21 01:54:47,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:54:47,529 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 [2021-11-21 01:54:47,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:54:48,010 INFO L225 Difference]: With dead ends: 163735 [2021-11-21 01:54:48,010 INFO L226 Difference]: Without dead ends: 114808 [2021-11-21 01:54:48,154 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:54:48,155 INFO L933 BasicCegarLoop]: 7809 mSDtfsCounter, 3499 mSDsluCounter, 13731 mSDsCounter, 0 mSdLazyCounter, 2981 mSolverCounterSat, 1003 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4466 SdHoareTripleChecker+Valid, 19766 SdHoareTripleChecker+Invalid, 3986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1003 IncrementalHoareTripleChecker+Valid, 2981 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:54:48,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4466 Valid, 19766 Invalid, 3986 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1003 Valid, 2981 Invalid, 2 Unknown, 0 Unchecked, 25.0s Time] [2021-11-21 01:54:48,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114808 states. [2021-11-21 01:54:53,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114808 to 49733. [2021-11-21 01:54:53,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49733 states, 30048 states have (on average 1.29386315228967) internal successors, (38878), 30812 states have internal predecessors, (38878), 16000 states have call successors, (16000), 3688 states have call predecessors, (16000), 3682 states have return successors, (16040), 15811 states have call predecessors, (16040), 15988 states have call successors, (16040) [2021-11-21 01:54:53,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49733 states to 49733 states and 70918 transitions. [2021-11-21 01:54:53,973 INFO L78 Accepts]: Start accepts. Automaton has 49733 states and 70918 transitions. Word has length 958 [2021-11-21 01:54:53,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:54:53,975 INFO L470 AbstractCegarLoop]: Abstraction has 49733 states and 70918 transitions. [2021-11-21 01:54:53,975 INFO L471 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) [2021-11-21 01:54:53,975 INFO L276 IsEmpty]: Start isEmpty. Operand 49733 states and 70918 transitions. [2021-11-21 01:54:54,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2021-11-21 01:54:54,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:54:54,011 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:54:54,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-21 01:54:54,011 INFO L402 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)] === [2021-11-21 01:54:54,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:54:54,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1500509256, now seen corresponding path program 1 times [2021-11-21 01:54:54,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:54:54,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869314623] [2021-11-21 01:54:54,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:54:54,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:54:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:54:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 16025 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16001 trivial. 0 not checked. [2021-11-21 01:54:55,036 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:54:55,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869314623] [2021-11-21 01:54:55,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869314623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:54:55,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:54:55,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:54:55,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407595464] [2021-11-21 01:54:55,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:54:55,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:54:55,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:54:55,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:54:55,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:54:55,041 INFO L87 Difference]: Start difference. First operand 49733 states and 70918 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) [2021-11-21 01:54:58,467 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:05,807 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:12,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:12,527 INFO L93 Difference]: Finished difference Result 113414 states and 162377 transitions. [2021-11-21 01:55:12,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:55:12,535 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 [2021-11-21 01:55:12,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:12,793 INFO L225 Difference]: With dead ends: 113414 [2021-11-21 01:55:12,793 INFO L226 Difference]: Without dead ends: 64471 [2021-11-21 01:55:13,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:55:13,111 INFO L933 BasicCegarLoop]: 6340 mSDtfsCounter, 2987 mSDsluCounter, 4298 mSDsCounter, 0 mSdLazyCounter, 1656 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2990 SdHoareTripleChecker+Valid, 10087 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1656 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:13,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2990 Valid, 10087 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1656 Invalid, 2 Unknown, 0 Unchecked, 12.7s Time] [2021-11-21 01:55:13,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64471 states. [2021-11-21 01:55:18,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64471 to 64238. [2021-11-21 01:55:18,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64238 states, 39106 states have (on average 1.3072929985168515) internal successors, (51123), 40031 states have internal predecessors, (51123), 20601 states have call successors, (20601), 4548 states have call predecessors, (20601), 4528 states have return successors, (20645), 20341 states have call predecessors, (20645), 20589 states have call successors, (20645) [2021-11-21 01:55:18,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64238 states to 64238 states and 92369 transitions. [2021-11-21 01:55:18,573 INFO L78 Accepts]: Start accepts. Automaton has 64238 states and 92369 transitions. Word has length 965 [2021-11-21 01:55:18,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:18,580 INFO L470 AbstractCegarLoop]: Abstraction has 64238 states and 92369 transitions. [2021-11-21 01:55:18,580 INFO L471 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) [2021-11-21 01:55:18,580 INFO L276 IsEmpty]: Start isEmpty. Operand 64238 states and 92369 transitions. [2021-11-21 01:55:18,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2021-11-21 01:55:18,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:18,630 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:55:18,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-21 01:55:18,631 INFO L402 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)] === [2021-11-21 01:55:18,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:18,632 INFO L85 PathProgramCache]: Analyzing trace with hash -62103269, now seen corresponding path program 1 times [2021-11-21 01:55:18,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:55:18,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981409264] [2021-11-21 01:55:18,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:18,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:55:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:19,615 INFO L134 CoverageAnalysis]: Checked inductivity of 16345 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 16311 trivial. 0 not checked. [2021-11-21 01:55:19,616 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:55:19,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981409264] [2021-11-21 01:55:19,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981409264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:19,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:19,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:55:19,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532099858] [2021-11-21 01:55:19,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:19,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:55:19,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:55:19,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:55:19,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:55:19,620 INFO L87 Difference]: Start difference. First operand 64238 states and 92369 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)