./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF --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 9bfbecd8ca52470a88d05c2ee48bea0bde6dbc2be84932ebcf7050b5532f4c7c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:41:26,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:41:26,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:41:26,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:41:26,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:41:26,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:41:26,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:41:26,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:41:26,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:41:26,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:41:26,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:41:26,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:41:26,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:41:26,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:41:26,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:41:26,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:41:26,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:41:26,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:41:26,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:41:26,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:41:26,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:41:26,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:41:26,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:41:26,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:41:26,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:41:26,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:41:26,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:41:26,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:41:26,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:41:26,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:41:26,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:41:26,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:41:26,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:41:26,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:41:26,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:41:26,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:41:26,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:41:26,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:41:26,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:41:26,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:41:26,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:41:26,750 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 22:41:26,796 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:41:26,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:41:26,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:41:26,798 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:41:26,799 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:41:26,799 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:41:26,799 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:41:26,800 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:41:26,806 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:41:26,806 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:41:26,807 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:41:26,808 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:41:26,808 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:41:26,808 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:41:26,809 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:41:26,809 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:41:26,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:41:26,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:41:26,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:41:26,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:41:26,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:41:26,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:41:26,811 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:41:26,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:41:26,812 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:41:26,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:41:26,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:41:26,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:41:26,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:41:26,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:41:26,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:41:26,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:41:26,815 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:41:26,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:41:26,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:41:26,816 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:41:26,816 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:41:26,817 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_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bfbecd8ca52470a88d05c2ee48bea0bde6dbc2be84932ebcf7050b5532f4c7c [2021-11-12 22:41:27,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:41:27,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:41:27,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:41:27,151 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:41:27,151 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:41:27,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i [2021-11-12 22:41:27,244 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/data/4a133b947/2e67b378ebb84a39829d2e5ac7044ccf/FLAGfadcd5ba3 [2021-11-12 22:41:28,333 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:41:28,335 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i [2021-11-12 22:41:28,415 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/data/4a133b947/2e67b378ebb84a39829d2e5ac7044ccf/FLAGfadcd5ba3 [2021-11-12 22:41:28,669 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/data/4a133b947/2e67b378ebb84a39829d2e5ac7044ccf [2021-11-12 22:41:28,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:41:28,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:41:28,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:41:28,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:41:28,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:41:28,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:41:28" (1/1) ... [2021-11-12 22:41:28,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77f88519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:28, skipping insertion in model container [2021-11-12 22:41:28,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:41:28" (1/1) ... [2021-11-12 22:41:28,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:41:28,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:41:31,159 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,429 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,443 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,459 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,482 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,497 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,498 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,514 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,551 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,553 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,560 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,561 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,577 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,650 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,718 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,741 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,742 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,743 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,804 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,805 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,806 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,806 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,810 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,814 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,825 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,826 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,854 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,924 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,944 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,944 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,945 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,977 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:31,992 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:32,556 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:32,560 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:32,699 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:32,804 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:32,805 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:32,935 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:32,937 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:33,032 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:33,032 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:33,033 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:33,040 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:33,240 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:33,322 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:33,322 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:33,333 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:33,334 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:33,337 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:33,339 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:33,342 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:33,342 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:33,343 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:33,357 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:33,494 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:33,542 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:33,567 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:41:34,716 WARN L228 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_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517003,517016] [2021-11-12 22:41:34,718 WARN L228 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_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517172,517185] [2021-11-12 22:41:34,719 WARN L228 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_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517339,517352] [2021-11-12 22:41:34,720 WARN L228 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_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517507,517520] [2021-11-12 22:41:34,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:41:34,771 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 22:41:34,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@37351b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:34, skipping insertion in model container [2021-11-12 22:41:34,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:41:34,772 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:41:34,775 INFO L158 Benchmark]: Toolchain (without parser) took 6100.15ms. Allocated memory was 109.1MB in the beginning and 169.9MB in the end (delta: 60.8MB). Free memory was 76.2MB in the beginning and 77.1MB in the end (delta: -883.8kB). Peak memory consumption was 64.4MB. Max. memory is 16.1GB. [2021-11-12 22:41:34,776 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 90.2MB. Free memory was 61.0MB in the beginning and 61.0MB in the end (delta: 26.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:41:34,777 INFO L158 Benchmark]: CACSL2BoogieTranslator took 6097.40ms. Allocated memory was 109.1MB in the beginning and 169.9MB in the end (delta: 60.8MB). Free memory was 75.8MB in the beginning and 77.1MB in the end (delta: -1.3MB). Peak memory consumption was 64.4MB. Max. memory is 16.1GB. [2021-11-12 22:41:34,780 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 90.2MB. Free memory was 61.0MB in the beginning and 61.0MB in the end (delta: 26.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 6097.40ms. Allocated memory was 109.1MB in the beginning and 169.9MB in the end (delta: 60.8MB). Free memory was 75.8MB in the beginning and 77.1MB in the end (delta: -1.3MB). Peak memory consumption was 64.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 8752]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF --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 9bfbecd8ca52470a88d05c2ee48bea0bde6dbc2be84932ebcf7050b5532f4c7c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:41:37,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:41:37,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:41:37,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:41:37,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:41:37,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:41:37,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:41:37,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:41:37,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:41:37,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:41:37,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:41:37,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:41:37,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:41:37,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:41:37,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:41:37,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:41:37,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:41:37,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:41:37,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:41:37,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:41:37,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:41:37,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:41:37,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:41:37,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:41:37,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:41:37,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:41:37,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:41:37,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:41:37,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:41:37,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:41:37,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:41:37,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:41:37,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:41:37,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:41:37,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:41:37,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:41:37,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:41:37,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:41:37,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:41:37,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:41:37,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:41:37,327 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 22:41:37,377 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:41:37,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:41:37,379 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:41:37,379 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:41:37,379 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:41:37,380 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:41:37,380 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:41:37,380 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:41:37,381 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:41:37,381 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:41:37,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:41:37,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:41:37,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:41:37,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:41:37,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:41:37,385 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:41:37,385 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:41:37,385 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:41:37,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:41:37,386 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:41:37,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:41:37,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:41:37,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:41:37,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:41:37,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:41:37,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:41:37,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:41:37,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:41:37,388 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:41:37,388 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:41:37,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:41:37,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:41:37,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:41:37,389 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bfbecd8ca52470a88d05c2ee48bea0bde6dbc2be84932ebcf7050b5532f4c7c [2021-11-12 22:41:37,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:41:37,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:41:37,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:41:37,872 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:41:37,873 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:41:37,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i [2021-11-12 22:41:37,957 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/data/ee8bcd423/8b9c503739ab43bd8874199033400412/FLAG143c9679b [2021-11-12 22:41:39,170 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:41:39,171 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i [2021-11-12 22:41:39,252 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/data/ee8bcd423/8b9c503739ab43bd8874199033400412/FLAG143c9679b [2021-11-12 22:41:39,351 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/data/ee8bcd423/8b9c503739ab43bd8874199033400412 [2021-11-12 22:41:39,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:41:39,354 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:41:39,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:41:39,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:41:39,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:41:39,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:41:39" (1/1) ... [2021-11-12 22:41:39,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a0ad1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:39, skipping insertion in model container [2021-11-12 22:41:39,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:41:39" (1/1) ... [2021-11-12 22:41:39,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:41:39,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:41:45,173 WARN L228 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_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517003,517016] [2021-11-12 22:41:45,176 WARN L228 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_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517172,517185] [2021-11-12 22:41:45,177 WARN L228 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_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517339,517352] [2021-11-12 22:41:45,178 WARN L228 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_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517507,517520] [2021-11-12 22:41:45,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:41:45,254 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:41:45,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:41:45,961 WARN L228 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_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517003,517016] [2021-11-12 22:41:45,962 WARN L228 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_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517172,517185] [2021-11-12 22:41:45,962 WARN L228 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_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517339,517352] [2021-11-12 22:41:45,963 WARN L228 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_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517507,517520] [2021-11-12 22:41:45,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:41:45,982 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:41:46,620 WARN L228 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_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517003,517016] [2021-11-12 22:41:46,621 WARN L228 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_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517172,517185] [2021-11-12 22:41:46,621 WARN L228 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_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517339,517352] [2021-11-12 22:41:46,622 WARN L228 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_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517507,517520] [2021-11-12 22:41:46,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:41:46,990 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:41:46,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:46 WrapperNode [2021-11-12 22:41:46,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:41:46,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:41:46,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:41:46,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:41:47,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:46" (1/1) ... [2021-11-12 22:41:47,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:46" (1/1) ... [2021-11-12 22:41:47,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:41:47,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:41:47,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:41:47,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:41:47,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:46" (1/1) ... [2021-11-12 22:41:47,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:46" (1/1) ... [2021-11-12 22:41:47,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:46" (1/1) ... [2021-11-12 22:41:47,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:46" (1/1) ... [2021-11-12 22:41:47,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:46" (1/1) ... [2021-11-12 22:41:47,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:46" (1/1) ... [2021-11-12 22:41:47,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:46" (1/1) ... [2021-11-12 22:41:47,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:41:47,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:41:47,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:41:47,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:41:47,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:46" (1/1) ... [2021-11-12 22:41:47,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:41:47,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:41:47,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:41:47,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:41:47,853 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_parallel [2021-11-12 22:41:47,853 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_parallel [2021-11-12 22:41:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-12 22:41:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure i_size_read [2021-11-12 22:41:47,854 INFO L138 BoogieDeclarations]: Found implementation of procedure i_size_read [2021-11-12 22:41:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 22:41:47,854 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 22:41:47,855 INFO L130 BoogieDeclarations]: Found specification of procedure add_to_commitlist [2021-11-12 22:41:47,855 INFO L138 BoogieDeclarations]: Found implementation of procedure add_to_commitlist [2021-11-12 22:41:47,855 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_put_sb_net [2021-11-12 22:41:47,855 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_put_sb_net [2021-11-12 22:41:47,855 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-12 22:41:47,855 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-12 22:41:47,856 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-12 22:41:47,856 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-12 22:41:47,856 INFO L130 BoogieDeclarations]: Found specification of procedure bl_write_pagelist [2021-11-12 22:41:47,856 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_write_pagelist [2021-11-12 22:41:47,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 22:41:47,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 22:41:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure bio_alloc [2021-11-12 22:41:47,857 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_alloc [2021-11-12 22:41:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 22:41:47,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 22:41:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_unregister_layoutdriver [2021-11-12 22:41:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_unregister_layoutdriver [2021-11-12 22:41:47,858 INFO L130 BoogieDeclarations]: Found specification of procedure trylock_page [2021-11-12 22:41:47,859 INFO L138 BoogieDeclarations]: Found implementation of procedure trylock_page [2021-11-12 22:41:47,859 INFO L130 BoogieDeclarations]: Found specification of procedure submit_bio [2021-11-12 22:41:47,859 INFO L138 BoogieDeclarations]: Found implementation of procedure submit_bio [2021-11-12 22:41:47,859 INFO L130 BoogieDeclarations]: Found specification of procedure BLK_LSEG2EXT [2021-11-12 22:41:47,859 INFO L138 BoogieDeclarations]: Found implementation of procedure BLK_LSEG2EXT [2021-11-12 22:41:47,860 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4blocklayout_unregister_sb [2021-11-12 22:41:47,860 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4blocklayout_unregister_sb [2021-11-12 22:41:47,860 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_SERVER [2021-11-12 22:41:47,860 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_SERVER [2021-11-12 22:41:47,860 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-12 22:41:47,860 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-12 22:41:47,861 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-12 22:41:47,861 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_lock_release [2021-11-12 22:41:47,861 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_lock_release [2021-11-12 22:41:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure BLK_LO2EXT [2021-11-12 22:41:47,862 INFO L138 BoogieDeclarations]: Found implementation of procedure BLK_LO2EXT [2021-11-12 22:41:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2021-11-12 22:41:47,863 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2021-11-12 22:41:47,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-12 22:41:47,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-12 22:41:47,864 INFO L130 BoogieDeclarations]: Found specification of procedure print_page [2021-11-12 22:41:47,864 INFO L138 BoogieDeclarations]: Found implementation of procedure print_page [2021-11-12 22:41:47,864 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-12 22:41:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 22:41:47,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 22:41:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure PageWriteback [2021-11-12 22:41:47,866 INFO L138 BoogieDeclarations]: Found implementation of procedure PageWriteback [2021-11-12 22:41:47,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:41:47,866 INFO L130 BoogieDeclarations]: Found specification of procedure bl_free_layout_hdr [2021-11-12 22:41:47,867 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_free_layout_hdr [2021-11-12 22:41:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure print_clist [2021-11-12 22:41:47,867 INFO L138 BoogieDeclarations]: Found implementation of procedure print_clist [2021-11-12 22:41:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:41:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 22:41:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 22:41:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-12 22:41:47,868 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-12 22:41:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-12 22:41:47,869 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-12 22:41:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure zero_user_segments [2021-11-12 22:41:47,869 INFO L138 BoogieDeclarations]: Found implementation of procedure zero_user_segments [2021-11-12 22:41:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-12 22:41:47,870 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-12 22:41:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-12 22:41:47,870 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-12 22:41:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-12 22:41:47,870 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-12 22:41:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure bl_alloc_layout_hdr [2021-11-12 22:41:47,871 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_alloc_layout_hdr [2021-11-12 22:41:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure PageDirty [2021-11-12 22:41:47,872 INFO L138 BoogieDeclarations]: Found implementation of procedure PageDirty [2021-11-12 22:41:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-12 22:41:47,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-12 22:41:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure is_writable [2021-11-12 22:41:47,873 INFO L138 BoogieDeclarations]: Found implementation of procedure is_writable [2021-11-12 22:41:47,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-12 22:41:47,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-12 22:41:47,874 INFO L130 BoogieDeclarations]: Found specification of procedure normalize [2021-11-12 22:41:47,874 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize [2021-11-12 22:41:47,874 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-11-12 22:41:47,874 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-11-12 22:41:47,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_80 [2021-11-12 22:41:47,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_80 [2021-11-12 22:41:47,875 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4blocklayout_net_exit [2021-11-12 22:41:47,875 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4blocklayout_net_exit [2021-11-12 22:41:47,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-12 22:41:47,876 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-12 22:41:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_get_sb_net [2021-11-12 22:41:47,876 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_get_sb_net [2021-11-12 22:41:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure extents_consistent [2021-11-12 22:41:47,876 INFO L138 BoogieDeclarations]: Found implementation of procedure extents_consistent [2021-11-12 22:41:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-12 22:41:47,877 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-12 22:41:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_rpc_pipefs_notifier_unregister [2021-11-12 22:41:47,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_rpc_pipefs_notifier_unregister [2021-11-12 22:41:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure bl_submit_bio [2021-11-12 22:41:47,878 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_submit_bio [2021-11-12 22:41:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-12 22:41:47,879 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-12 22:41:47,882 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_queue_upcall [2021-11-12 22:41:47,882 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_queue_upcall [2021-11-12 22:41:47,882 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-12 22:41:47,883 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-12 22:41:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2021-11-12 22:41:47,883 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2021-11-12 22:41:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure bl_put_extent [2021-11-12 22:41:47,884 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_put_extent [2021-11-12 22:41:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 22:41:47,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 22:41:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:41:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-12 22:41:47,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-12 22:41:47,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-12 22:41:47,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-12 22:41:47,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-12 22:41:47,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-12 22:41:47,892 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-12 22:41:47,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-12 22:41:47,893 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_inline_decode [2021-11-12 22:41:47,893 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_inline_decode [2021-11-12 22:41:47,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 22:41:47,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 22:41:47,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:41:47,893 INFO L130 BoogieDeclarations]: Found specification of procedure clean_pnfs_block_layoutupdate [2021-11-12 22:41:47,894 INFO L138 BoogieDeclarations]: Found implementation of procedure clean_pnfs_block_layoutupdate [2021-11-12 22:41:47,894 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-12 22:41:47,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 22:41:47,894 INFO L130 BoogieDeclarations]: Found specification of procedure bl_alloc_lseg [2021-11-12 22:41:47,894 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_alloc_lseg [2021-11-12 22:41:47,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 22:41:47,894 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 22:41:47,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 22:41:47,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 22:41:47,895 INFO L130 BoogieDeclarations]: Found specification of procedure lock_page [2021-11-12 22:41:47,895 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_page [2021-11-12 22:41:47,895 INFO L130 BoogieDeclarations]: Found specification of procedure end_page_writeback [2021-11-12 22:41:47,895 INFO L138 BoogieDeclarations]: Found implementation of procedure end_page_writeback [2021-11-12 22:41:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure print_elist [2021-11-12 22:41:47,896 INFO L138 BoogieDeclarations]: Found implementation of procedure print_elist [2021-11-12 22:41:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-12 22:41:47,896 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-12 22:41:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure kmap_atomic [2021-11-12 22:41:47,896 INFO L138 BoogieDeclarations]: Found implementation of procedure kmap_atomic [2021-11-12 22:41:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-12 22:41:47,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-12 22:41:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-12 22:41:47,897 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-12 22:41:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure bl_cleanup_layoutcommit [2021-11-12 22:41:47,897 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_cleanup_layoutcommit [2021-11-12 22:41:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure PageLocked [2021-11-12 22:41:47,897 INFO L138 BoogieDeclarations]: Found implementation of procedure PageLocked [2021-11-12 22:41:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_generic_pg_test [2021-11-12 22:41:47,898 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_generic_pg_test [2021-11-12 22:41:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_destroy_pipe_data [2021-11-12 22:41:47,898 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_destroy_pipe_data [2021-11-12 22:41:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_parallel [2021-11-12 22:41:47,898 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_parallel [2021-11-12 22:41:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-12 22:41:47,899 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-12 22:41:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 22:41:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure bl_is_sector_init [2021-11-12 22:41:47,899 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_is_sector_init [2021-11-12 22:41:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:41:47,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:41:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-12 22:41:47,900 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-12 22:41:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-12 22:41:47,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-12 22:41:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:41:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure unlock_page [2021-11-12 22:41:47,901 INFO L138 BoogieDeclarations]: Found implementation of procedure unlock_page [2021-11-12 22:41:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-12 22:41:47,902 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-12 22:41:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure remove_wait_queue [2021-11-12 22:41:47,903 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_wait_queue [2021-11-12 22:41:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 22:41:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure bl_clear_layoutdriver [2021-11-12 22:41:47,903 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_clear_layoutdriver [2021-11-12 22:41:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:41:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 22:41:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 22:41:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 22:41:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 22:41:47,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 22:41:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure bl_pipe_destroy_msg [2021-11-12 22:41:47,904 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_pipe_destroy_msg [2021-11-12 22:41:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure bl_read_pagelist [2021-11-12 22:41:47,905 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_read_pagelist [2021-11-12 22:41:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 22:41:47,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 22:41:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-12 22:41:47,905 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-12 22:41:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure print_bl_extent [2021-11-12 22:41:47,906 INFO L138 BoogieDeclarations]: Found implementation of procedure print_bl_extent [2021-11-12 22:41:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure bl_end_io_read [2021-11-12 22:41:47,906 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_end_io_read [2021-11-12 22:41:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2021-11-12 22:41:47,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2021-11-12 22:41:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_encode_hyper [2021-11-12 22:41:47,906 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_encode_hyper [2021-11-12 22:41:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure bl_write_cleanup [2021-11-12 22:41:47,907 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_write_cleanup [2021-11-12 22:41:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-12 22:41:47,907 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-12 22:41:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure bl_mark_sectors_init [2021-11-12 22:41:47,907 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_mark_sectors_init [2021-11-12 22:41:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 22:41:47,908 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 22:41:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure free_blk_mountid [2021-11-12 22:41:47,908 INFO L138 BoogieDeclarations]: Found implementation of procedure free_blk_mountid [2021-11-12 22:41:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-12 22:41:47,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-12 22:41:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure is_range_written [2021-11-12 22:41:47,908 INFO L138 BoogieDeclarations]: Found implementation of procedure is_range_written [2021-11-12 22:41:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-12 22:41:47,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-12 22:41:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:41:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-12 22:41:47,909 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-12 22:41:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure list_replace [2021-11-12 22:41:47,910 INFO L138 BoogieDeclarations]: Found implementation of procedure list_replace [2021-11-12 22:41:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2021-11-12 22:41:47,910 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2021-11-12 22:41:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:41:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-12 22:41:47,911 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-12 22:41:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2021-11-12 22:41:47,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2021-11-12 22:41:47,916 INFO L130 BoogieDeclarations]: Found specification of procedure is_aligned_req [2021-11-12 22:41:47,916 INFO L138 BoogieDeclarations]: Found implementation of procedure is_aligned_req [2021-11-12 22:41:47,916 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2021-11-12 22:41:47,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2021-11-12 22:41:47,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 22:41:47,916 INFO L130 BoogieDeclarations]: Found specification of procedure _prep_new_extent [2021-11-12 22:41:47,916 INFO L138 BoogieDeclarations]: Found implementation of procedure _prep_new_extent [2021-11-12 22:41:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 22:41:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 22:41:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:41:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure bio_put [2021-11-12 22:41:47,919 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_put [2021-11-12 22:41:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 22:41:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure print_short_extent [2021-11-12 22:41:47,919 INFO L138 BoogieDeclarations]: Found implementation of procedure print_short_extent [2021-11-12 22:41:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_I [2021-11-12 22:41:47,920 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_I [2021-11-12 22:41:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_reserve_space [2021-11-12 22:41:47,920 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_reserve_space [2021-11-12 22:41:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-12 22:41:47,920 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-12 22:41:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_pipefs_notifier_unregister [2021-11-12 22:41:47,921 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_pipefs_notifier_unregister [2021-11-12 22:41:47,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_im_lock_of_pnfs_inval_markings [2021-11-12 22:41:47,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_im_lock_of_pnfs_inval_markings [2021-11-12 22:41:47,921 INFO L130 BoogieDeclarations]: Found specification of procedure add_wait_queue [2021-11-12 22:41:47,921 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wait_queue [2021-11-12 22:41:47,921 INFO L130 BoogieDeclarations]: Found specification of procedure bl_push_one_short_extent [2021-11-12 22:41:47,921 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_push_one_short_extent [2021-11-12 22:41:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-12 22:41:47,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-12 22:41:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-12 22:41:47,922 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-12 22:41:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-12 22:41:47,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-12 22:41:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_81 [2021-11-12 22:41:47,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_81 [2021-11-12 22:41:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-12 22:41:47,923 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-12 22:41:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-11-12 22:41:47,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-11-12 22:41:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure _set_range [2021-11-12 22:41:47,923 INFO L138 BoogieDeclarations]: Found implementation of procedure _set_range [2021-11-12 22:41:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure bl_encode_layoutcommit [2021-11-12 22:41:47,924 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_encode_layoutcommit [2021-11-12 22:41:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure mark_extents_written [2021-11-12 22:41:47,924 INFO L138 BoogieDeclarations]: Found implementation of procedure mark_extents_written [2021-11-12 22:41:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_79 [2021-11-12 22:41:47,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_79 [2021-11-12 22:41:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure _add_entry [2021-11-12 22:41:47,925 INFO L138 BoogieDeclarations]: Found implementation of procedure _add_entry [2021-11-12 22:41:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure _front_merge [2021-11-12 22:41:47,925 INFO L138 BoogieDeclarations]: Found implementation of procedure _front_merge [2021-11-12 22:41:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure do_add_page_to_bio [2021-11-12 22:41:47,925 INFO L138 BoogieDeclarations]: Found implementation of procedure do_add_page_to_bio [2021-11-12 22:41:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-12 22:41:47,926 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-12 22:41:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure net_generic [2021-11-12 22:41:47,926 INFO L138 BoogieDeclarations]: Found implementation of procedure net_generic [2021-11-12 22:41:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_79 [2021-11-12 22:41:47,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_79 [2021-11-12 22:41:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-11-12 22:41:47,926 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-11-12 22:41:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure bl_find_get_extent [2021-11-12 22:41:47,927 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_find_get_extent [2021-11-12 22:41:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure bl_free_lseg [2021-11-12 22:41:47,927 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_free_lseg [2021-11-12 22:41:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-12 22:41:47,927 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-12 22:41:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-11-12 22:41:47,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-11-12 22:41:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 22:41:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 22:41:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 22:41:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 22:41:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4blocklayout_register_sb [2021-11-12 22:41:47,929 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4blocklayout_register_sb [2021-11-12 22:41:47,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 22:41:47,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 22:41:47,929 INFO L130 BoogieDeclarations]: Found specification of procedure SetPageUptodate [2021-11-12 22:41:47,929 INFO L138 BoogieDeclarations]: Found implementation of procedure SetPageUptodate [2021-11-12 22:41:47,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_im_lock_of_pnfs_inval_markings [2021-11-12 22:41:47,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_im_lock_of_pnfs_inval_markings [2021-11-12 22:41:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_82 [2021-11-12 22:41:47,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_82 [2021-11-12 22:41:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure zero_user_segment [2021-11-12 22:41:47,930 INFO L138 BoogieDeclarations]: Found implementation of procedure zero_user_segment [2021-11-12 22:41:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_80 [2021-11-12 22:41:47,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_80 [2021-11-12 22:41:47,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_nfs4blocklayout_exit_7_2 [2021-11-12 22:41:47,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_nfs4blocklayout_exit_7_2 [2021-11-12 22:41:47,931 INFO L130 BoogieDeclarations]: Found specification of procedure decode_sector_number [2021-11-12 22:41:47,931 INFO L138 BoogieDeclarations]: Found implementation of procedure decode_sector_number [2021-11-12 22:41:47,931 INFO L130 BoogieDeclarations]: Found specification of procedure bl_read_partial_page_sync [2021-11-12 22:41:47,931 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_read_partial_page_sync [2021-11-12 22:41:47,931 INFO L130 BoogieDeclarations]: Found specification of procedure put_parallel [2021-11-12 22:41:47,932 INFO L138 BoogieDeclarations]: Found implementation of procedure put_parallel [2021-11-12 22:41:47,932 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-12 22:41:47,932 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-12 22:41:47,932 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_generic_pg_init_read [2021-11-12 22:41:47,932 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_generic_pg_init_read [2021-11-12 22:41:47,932 INFO L130 BoogieDeclarations]: Found specification of procedure bl_end_io_write [2021-11-12 22:41:47,932 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_end_io_write [2021-11-12 22:41:47,933 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2021-11-12 22:41:47,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2021-11-12 22:41:47,933 INFO L130 BoogieDeclarations]: Found specification of procedure kref_init [2021-11-12 22:41:47,933 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_init [2021-11-12 22:41:47,933 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2021-11-12 22:41:47,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2021-11-12 22:41:47,933 INFO L130 BoogieDeclarations]: Found specification of procedure PageUptodate [2021-11-12 22:41:47,934 INFO L138 BoogieDeclarations]: Found implementation of procedure PageUptodate [2021-11-12 22:41:47,934 INFO L130 BoogieDeclarations]: Found specification of procedure bio_add_page [2021-11-12 22:41:47,934 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_add_page [2021-11-12 22:41:47,934 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-12 22:41:47,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-12 22:41:47,934 INFO L130 BoogieDeclarations]: Found specification of procedure release_extents [2021-11-12 22:41:47,934 INFO L138 BoogieDeclarations]: Found implementation of procedure release_extents [2021-11-12 22:41:47,935 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-12 22:41:47,935 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-12 22:41:47,935 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_lock_acquire [2021-11-12 22:41:47,935 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_lock_acquire [2021-11-12 22:41:47,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-12 22:41:47,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-12 22:41:47,936 INFO L130 BoogieDeclarations]: Found specification of procedure bl_do_readpage_sync [2021-11-12 22:41:47,936 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_do_readpage_sync [2021-11-12 22:41:47,936 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-12 22:41:47,936 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-12 22:41:47,936 INFO L130 BoogieDeclarations]: Found specification of procedure bl_set_layoutdriver [2021-11-12 22:41:47,936 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_set_layoutdriver [2021-11-12 22:41:47,936 INFO L130 BoogieDeclarations]: Found specification of procedure bl_end_io_write_zero [2021-11-12 22:41:47,937 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_end_io_write_zero [2021-11-12 22:41:47,937 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_up [2021-11-12 22:41:47,937 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_up [2021-11-12 22:41:47,937 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-12 22:41:47,937 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-12 22:41:47,937 INFO L130 BoogieDeclarations]: Found specification of procedure __kunmap_atomic [2021-11-12 22:41:47,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __kunmap_atomic [2021-11-12 22:41:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2021-11-12 22:41:47,938 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2021-11-12 22:41:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-12 22:41:47,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-12 22:41:47,942 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_set_lo_fail [2021-11-12 22:41:47,943 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_set_lo_fail [2021-11-12 22:41:47,943 INFO L130 BoogieDeclarations]: Found specification of procedure set_to_rw [2021-11-12 22:41:47,943 INFO L138 BoogieDeclarations]: Found implementation of procedure set_to_rw [2021-11-12 22:41:49,508 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 22:42:53,610 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-12 22:42:53,751 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:42:53,752 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-12 22:42:53,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:42:53 BoogieIcfgContainer [2021-11-12 22:42:53,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:42:53,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:42:53,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:42:53,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:42:53,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:41:39" (1/3) ... [2021-11-12 22:42:53,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@149d4fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:42:53, skipping insertion in model container [2021-11-12 22:42:53,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:46" (2/3) ... [2021-11-12 22:42:53,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@149d4fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:42:53, skipping insertion in model container [2021-11-12 22:42:53,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:42:53" (3/3) ... [2021-11-12 22:42:53,766 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i [2021-11-12 22:42:53,772 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:42:53,772 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-12 22:42:53,843 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:42:53,851 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 [2021-11-12 22:42:53,851 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-12 22:42:53,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 3085 states, 2064 states have (on average 1.313468992248062) internal successors, (2711), 2113 states have internal predecessors, (2711), 848 states have call successors, (848), 173 states have call predecessors, (848), 172 states have return successors, (841), 826 states have call predecessors, (841), 841 states have call successors, (841) [2021-11-12 22:42:53,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2021-11-12 22:42:53,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:53,967 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:53,967 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:42:53,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:53,973 INFO L85 PathProgramCache]: Analyzing trace with hash 535759552, now seen corresponding path program 1 times [2021-11-12 22:42:53,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:54,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658276257] [2021-11-12 22:42:54,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:54,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:54,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:54,008 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:54,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:43:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:43:00,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 2051 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:43:00,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:43:01,654 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 5049 trivial. 0 not checked. [2021-11-12 22:43:01,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:43:02,901 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2021-11-12 22:43:02,902 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:43:02,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658276257] [2021-11-12 22:43:02,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658276257] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:43:02,903 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:43:02,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:43:02,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163484831] [2021-11-12 22:43:02,907 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:43:02,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:43:02,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:43:02,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:43:02,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:43:02,975 INFO L87 Difference]: Start difference. First operand has 3085 states, 2064 states have (on average 1.313468992248062) internal successors, (2711), 2113 states have internal predecessors, (2711), 848 states have call successors, (848), 173 states have call predecessors, (848), 172 states have return successors, (841), 826 states have call predecessors, (841), 841 states have call successors, (841) Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2021-11-12 22:43:05,360 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:43:19,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:43:19,438 INFO L93 Difference]: Finished difference Result 11711 states and 17236 transitions. [2021-11-12 22:43:19,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:43:19,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) Word has length 406 [2021-11-12 22:43:19,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:43:19,552 INFO L225 Difference]: With dead ends: 11711 [2021-11-12 22:43:19,552 INFO L226 Difference]: Without dead ends: 8680 [2021-11-12 22:43:19,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 808 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:43:19,607 INFO L933 BasicCegarLoop]: 5901 mSDtfsCounter, 8089 mSDsluCounter, 7546 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14429.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8089 SdHoareTripleChecker+Valid, 13447 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 106.04ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15517.65ms IncrementalHoareTripleChecker+Time [2021-11-12 22:43:19,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8089 Valid, 13447 Invalid, 1675 Unknown, 0 Unchecked, 106.04ms Time], IncrementalHoareTripleChecker [31 Valid, 1643 Invalid, 1 Unknown, 0 Unchecked, 15517.65ms Time] [2021-11-12 22:43:19,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8680 states. [2021-11-12 22:43:20,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8680 to 8648. [2021-11-12 22:43:20,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8648 states, 5805 states have (on average 1.29130060292851) internal successors, (7496), 5954 states have internal predecessors, (7496), 2336 states have call successors, (2336), 505 states have call predecessors, (2336), 504 states have return successors, (2332), 2287 states have call predecessors, (2332), 2332 states have call successors, (2332) [2021-11-12 22:43:20,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8648 states to 8648 states and 12164 transitions. [2021-11-12 22:43:20,392 INFO L78 Accepts]: Start accepts. Automaton has 8648 states and 12164 transitions. Word has length 406 [2021-11-12 22:43:20,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:43:20,399 INFO L470 AbstractCegarLoop]: Abstraction has 8648 states and 12164 transitions. [2021-11-12 22:43:20,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2021-11-12 22:43:20,400 INFO L276 IsEmpty]: Start isEmpty. Operand 8648 states and 12164 transitions. [2021-11-12 22:43:20,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2021-11-12 22:43:20,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:43:20,420 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:43:20,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:43:20,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:43:20,634 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:43:20,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:43:20,635 INFO L85 PathProgramCache]: Analyzing trace with hash -452118371, now seen corresponding path program 1 times [2021-11-12 22:43:20,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:43:20,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164059170] [2021-11-12 22:43:20,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:43:20,643 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:43:20,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:43:20,645 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:43:20,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:43:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:43:26,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 2127 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:43:26,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:43:27,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 5049 trivial. 0 not checked. [2021-11-12 22:43:27,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:43:28,692 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2021-11-12 22:43:28,692 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:43:28,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164059170] [2021-11-12 22:43:28,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164059170] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:43:28,692 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:43:28,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:43:28,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944293783] [2021-11-12 22:43:28,693 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:43:28,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:43:28,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:43:28,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:43:28,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:43:28,697 INFO L87 Difference]: Start difference. First operand 8648 states and 12164 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-12 22:43:30,934 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:43:32,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:43:32,095 INFO L93 Difference]: Finished difference Result 22733 states and 31951 transitions. [2021-11-12 22:43:32,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:43:32,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 422 [2021-11-12 22:43:32,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:43:32,242 INFO L225 Difference]: With dead ends: 22733 [2021-11-12 22:43:32,242 INFO L226 Difference]: Without dead ends: 14158 [2021-11-12 22:43:32,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 842 GetRequests, 841 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:43:32,302 INFO L933 BasicCegarLoop]: 5040 mSDtfsCounter, 3992 mSDsluCounter, 4189 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2561.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3992 SdHoareTripleChecker+Valid, 9229 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.83ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2671.94ms IncrementalHoareTripleChecker+Time [2021-11-12 22:43:32,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3992 Valid, 9229 Invalid, 67 Unknown, 0 Unchecked, 27.83ms Time], IncrementalHoareTripleChecker [7 Valid, 59 Invalid, 1 Unknown, 0 Unchecked, 2671.94ms Time] [2021-11-12 22:43:32,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14158 states. [2021-11-12 22:43:33,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14158 to 14125. [2021-11-12 22:43:33,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14125 states, 9473 states have (on average 1.2901931806186002) internal successors, (12222), 9717 states have internal predecessors, (12222), 3807 states have call successors, (3807), 843 states have call predecessors, (3807), 842 states have return successors, (3803), 3726 states have call predecessors, (3803), 3803 states have call successors, (3803) [2021-11-12 22:43:33,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14125 states to 14125 states and 19832 transitions. [2021-11-12 22:43:33,317 INFO L78 Accepts]: Start accepts. Automaton has 14125 states and 19832 transitions. Word has length 422 [2021-11-12 22:43:33,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:43:33,318 INFO L470 AbstractCegarLoop]: Abstraction has 14125 states and 19832 transitions. [2021-11-12 22:43:33,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-12 22:43:33,320 INFO L276 IsEmpty]: Start isEmpty. Operand 14125 states and 19832 transitions. [2021-11-12 22:43:33,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2021-11-12 22:43:33,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:43:33,332 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:43:33,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:43:33,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:43:33,554 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:43:33,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:43:33,555 INFO L85 PathProgramCache]: Analyzing trace with hash -743512277, now seen corresponding path program 1 times [2021-11-12 22:43:33,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:43:33,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014039599] [2021-11-12 22:43:33,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:43:33,562 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:43:33,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:43:33,563 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:43:33,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:43:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:43:39,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 2128 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:43:39,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:43:40,593 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 5049 trivial. 0 not checked. [2021-11-12 22:43:40,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:43:41,594 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2021-11-12 22:43:41,595 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:43:41,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014039599] [2021-11-12 22:43:41,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014039599] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:43:41,595 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:43:41,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:43:41,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329205453] [2021-11-12 22:43:41,595 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:43:41,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:43:41,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:43:41,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:43:41,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:43:41,597 INFO L87 Difference]: Start difference. First operand 14125 states and 19832 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-12 22:43:43,844 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:43:45,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:43:45,017 INFO L93 Difference]: Finished difference Result 32336 states and 45266 transitions. [2021-11-12 22:43:45,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:43:45,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 423 [2021-11-12 22:43:45,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:43:45,163 INFO L225 Difference]: With dead ends: 32336 [2021-11-12 22:43:45,163 INFO L226 Difference]: Without dead ends: 18284 [2021-11-12 22:43:45,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 844 GetRequests, 843 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:43:45,245 INFO L933 BasicCegarLoop]: 7678 mSDtfsCounter, 3970 mSDsluCounter, 4190 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2576.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3970 SdHoareTripleChecker+Valid, 11868 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.24ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2680.17ms IncrementalHoareTripleChecker+Time [2021-11-12 22:43:45,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3970 Valid, 11868 Invalid, 67 Unknown, 0 Unchecked, 32.24ms Time], IncrementalHoareTripleChecker [7 Valid, 59 Invalid, 1 Unknown, 0 Unchecked, 2680.17ms Time] [2021-11-12 22:43:45,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18284 states. [2021-11-12 22:43:46,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18284 to 18249. [2021-11-12 22:43:46,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18249 states, 12292 states have (on average 1.2867718841522942) internal successors, (15817), 12606 states have internal predecessors, (15817), 4827 states have call successors, (4827), 1128 states have call predecessors, (4827), 1127 states have return successors, (4823), 4720 states have call predecessors, (4823), 4823 states have call successors, (4823) [2021-11-12 22:43:46,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18249 states to 18249 states and 25467 transitions. [2021-11-12 22:43:46,705 INFO L78 Accepts]: Start accepts. Automaton has 18249 states and 25467 transitions. Word has length 423 [2021-11-12 22:43:46,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:43:46,706 INFO L470 AbstractCegarLoop]: Abstraction has 18249 states and 25467 transitions. [2021-11-12 22:43:46,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-12 22:43:46,707 INFO L276 IsEmpty]: Start isEmpty. Operand 18249 states and 25467 transitions. [2021-11-12 22:43:46,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2021-11-12 22:43:46,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:43:46,720 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 34, 34, 34, 34, 34, 34, 3, 3, 3, 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] [2021-11-12 22:43:46,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:43:46,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:43:46,942 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:43:46,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:43:46,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1654278214, now seen corresponding path program 1 times [2021-11-12 22:43:46,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:43:46,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410779198] [2021-11-12 22:43:46,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:43:46,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:43:46,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:43:46,956 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:43:46,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:43:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:43:53,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 2137 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:43:53,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:43:58,039 INFO L134 CoverageAnalysis]: Checked inductivity of 5390 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5390 trivial. 0 not checked. [2021-11-12 22:43:58,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:44:00,376 INFO L134 CoverageAnalysis]: Checked inductivity of 5390 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5390 trivial. 0 not checked. [2021-11-12 22:44:00,376 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:44:00,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410779198] [2021-11-12 22:44:00,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410779198] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:44:00,377 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:44:00,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-12 22:44:00,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925331390] [2021-11-12 22:44:00,378 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:44:00,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 22:44:00,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:44:00,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 22:44:00,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:44:00,381 INFO L87 Difference]: Start difference. First operand 18249 states and 25467 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (87), 4 states have call predecessors, (87), 2 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2021-11-12 22:44:01,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:44:01,365 INFO L93 Difference]: Finished difference Result 18255 states and 25472 transitions. [2021-11-12 22:44:01,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:44:01,366 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (87), 4 states have call predecessors, (87), 2 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) Word has length 461 [2021-11-12 22:44:01,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:44:01,461 INFO L225 Difference]: With dead ends: 18255 [2021-11-12 22:44:01,461 INFO L226 Difference]: Without dead ends: 18253 [2021-11-12 22:44:01,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 923 GetRequests, 915 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:44:01,474 INFO L933 BasicCegarLoop]: 4247 mSDtfsCounter, 4078 mSDsluCounter, 12721 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 162.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4095 SdHoareTripleChecker+Valid, 16968 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.91ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 174.90ms IncrementalHoareTripleChecker+Time [2021-11-12 22:44:01,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4095 Valid, 16968 Invalid, 30 Unknown, 0 Unchecked, 42.91ms Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 174.90ms Time] [2021-11-12 22:44:01,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18253 states. [2021-11-12 22:44:02,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18253 to 18253. [2021-11-12 22:44:02,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18253 states, 12295 states have (on average 1.2867019113460756) internal successors, (15820), 12609 states have internal predecessors, (15820), 4827 states have call successors, (4827), 1129 states have call predecessors, (4827), 1128 states have return successors, (4823), 4720 states have call predecessors, (4823), 4823 states have call successors, (4823) [2021-11-12 22:44:02,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18253 states to 18253 states and 25470 transitions. [2021-11-12 22:44:02,776 INFO L78 Accepts]: Start accepts. Automaton has 18253 states and 25470 transitions. Word has length 461 [2021-11-12 22:44:02,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:44:02,778 INFO L470 AbstractCegarLoop]: Abstraction has 18253 states and 25470 transitions. [2021-11-12 22:44:02,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (87), 4 states have call predecessors, (87), 2 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2021-11-12 22:44:02,779 INFO L276 IsEmpty]: Start isEmpty. Operand 18253 states and 25470 transitions. [2021-11-12 22:44:02,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2021-11-12 22:44:02,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:44:02,792 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 34, 34, 34, 34, 34, 34, 3, 3, 3, 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] [2021-11-12 22:44:02,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:44:03,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:44:03,014 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:44:03,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:44:03,014 INFO L85 PathProgramCache]: Analyzing trace with hash 132003292, now seen corresponding path program 1 times [2021-11-12 22:44:03,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:44:03,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793100820] [2021-11-12 22:44:03,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:44:03,022 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:44:03,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:44:03,023 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:44:03,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:44:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:44:09,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 2144 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:44:09,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:44:14,139 INFO L134 CoverageAnalysis]: Checked inductivity of 5392 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5390 trivial. 0 not checked. [2021-11-12 22:44:14,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:44:16,207 INFO L134 CoverageAnalysis]: Checked inductivity of 5392 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5390 trivial. 0 not checked. [2021-11-12 22:44:16,207 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:44:16,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793100820] [2021-11-12 22:44:16,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793100820] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:44:16,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:44:16,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:44:16,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852954831] [2021-11-12 22:44:16,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:44:16,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:44:16,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:44:16,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:44:16,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:44:16,210 INFO L87 Difference]: Start difference. First operand 18253 states and 25470 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, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2021-11-12 22:44:17,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:44:17,192 INFO L93 Difference]: Finished difference Result 18259 states and 25475 transitions. [2021-11-12 22:44:17,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:44:17,193 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, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 466 [2021-11-12 22:44:17,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:44:17,280 INFO L225 Difference]: With dead ends: 18259 [2021-11-12 22:44:17,280 INFO L226 Difference]: Without dead ends: 18257 [2021-11-12 22:44:17,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 925 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:44:17,293 INFO L933 BasicCegarLoop]: 4250 mSDtfsCounter, 4128 mSDsluCounter, 8475 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 129.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4144 SdHoareTripleChecker+Valid, 12725 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.65ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 135.62ms IncrementalHoareTripleChecker+Time [2021-11-12 22:44:17,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4144 Valid, 12725 Invalid, 26 Unknown, 0 Unchecked, 29.65ms Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 135.62ms Time] [2021-11-12 22:44:17,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18257 states. [2021-11-12 22:44:18,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18257 to 18257. [2021-11-12 22:44:18,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18257 states, 12298 states have (on average 1.2866319726784843) internal successors, (15823), 12612 states have internal predecessors, (15823), 4827 states have call successors, (4827), 1130 states have call predecessors, (4827), 1129 states have return successors, (4823), 4720 states have call predecessors, (4823), 4823 states have call successors, (4823) [2021-11-12 22:44:18,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18257 states to 18257 states and 25473 transitions. [2021-11-12 22:44:18,739 INFO L78 Accepts]: Start accepts. Automaton has 18257 states and 25473 transitions. Word has length 466 [2021-11-12 22:44:18,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:44:18,740 INFO L470 AbstractCegarLoop]: Abstraction has 18257 states and 25473 transitions. [2021-11-12 22:44:18,741 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, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2021-11-12 22:44:18,741 INFO L276 IsEmpty]: Start isEmpty. Operand 18257 states and 25473 transitions. [2021-11-12 22:44:18,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2021-11-12 22:44:18,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:44:18,756 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 34, 34, 34, 34, 34, 34, 3, 3, 3, 3, 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] [2021-11-12 22:44:18,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:44:18,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:44:18,978 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:44:18,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:44:18,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1524214598, now seen corresponding path program 1 times [2021-11-12 22:44:18,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:44:18,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865505667] [2021-11-12 22:44:18,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:44:18,987 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:44:18,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:44:18,988 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:44:19,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:44:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:44:24,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 2151 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:44:24,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:44:29,938 INFO L134 CoverageAnalysis]: Checked inductivity of 5398 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5394 trivial. 0 not checked. [2021-11-12 22:44:29,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:44:32,070 INFO L134 CoverageAnalysis]: Checked inductivity of 5398 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5394 trivial. 0 not checked. [2021-11-12 22:44:32,070 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:44:32,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865505667] [2021-11-12 22:44:32,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865505667] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:44:32,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:44:32,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:44:32,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272971262] [2021-11-12 22:44:32,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:44:32,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:44:32,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:44:32,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:44:32,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:44:32,074 INFO L87 Difference]: Start difference. First operand 18257 states and 25473 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, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-12 22:44:33,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:44:33,044 INFO L93 Difference]: Finished difference Result 18263 states and 25478 transitions. [2021-11-12 22:44:33,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:44:33,044 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, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 471 [2021-11-12 22:44:33,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:44:33,122 INFO L225 Difference]: With dead ends: 18263 [2021-11-12 22:44:33,123 INFO L226 Difference]: Without dead ends: 18261 [2021-11-12 22:44:33,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 935 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:44:33,130 INFO L933 BasicCegarLoop]: 4250 mSDtfsCounter, 4128 mSDsluCounter, 8475 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 121.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4143 SdHoareTripleChecker+Valid, 12725 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.65ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 136.07ms IncrementalHoareTripleChecker+Time [2021-11-12 22:44:33,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4143 Valid, 12725 Invalid, 26 Unknown, 0 Unchecked, 25.65ms Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 136.07ms Time] [2021-11-12 22:44:33,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18261 states. [2021-11-12 22:44:34,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18261 to 18261. [2021-11-12 22:44:34,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18261 states, 12301 states have (on average 1.2865620681245427) internal successors, (15826), 12615 states have internal predecessors, (15826), 4827 states have call successors, (4827), 1131 states have call predecessors, (4827), 1130 states have return successors, (4823), 4720 states have call predecessors, (4823), 4823 states have call successors, (4823) [2021-11-12 22:44:34,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18261 states to 18261 states and 25476 transitions. [2021-11-12 22:44:34,451 INFO L78 Accepts]: Start accepts. Automaton has 18261 states and 25476 transitions. Word has length 471 [2021-11-12 22:44:34,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:44:34,452 INFO L470 AbstractCegarLoop]: Abstraction has 18261 states and 25476 transitions. [2021-11-12 22:44:34,452 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, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-12 22:44:34,453 INFO L276 IsEmpty]: Start isEmpty. Operand 18261 states and 25476 transitions. [2021-11-12 22:44:34,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2021-11-12 22:44:34,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:44:34,468 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 34, 34, 34, 34, 34, 34, 4, 3, 3, 3, 3, 3, 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] [2021-11-12 22:44:34,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:44:34,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:44:34,681 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:44:34,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:44:34,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1053693860, now seen corresponding path program 1 times [2021-11-12 22:44:34,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:44:34,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180419717] [2021-11-12 22:44:34,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:44:34,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:44:34,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:44:34,689 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:44:34,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:44:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:44:40,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 2158 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:44:40,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:44:45,445 INFO L134 CoverageAnalysis]: Checked inductivity of 5408 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5402 trivial. 0 not checked. [2021-11-12 22:44:45,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:44:47,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5408 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5402 trivial. 0 not checked. [2021-11-12 22:44:47,416 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:44:47,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180419717] [2021-11-12 22:44:47,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180419717] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:44:47,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:44:47,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:44:47,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535109816] [2021-11-12 22:44:47,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:44:47,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:44:47,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:44:47,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:44:47,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:44:47,418 INFO L87 Difference]: Start difference. First operand 18261 states and 25476 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, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-12 22:44:48,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:44:48,519 INFO L93 Difference]: Finished difference Result 22867 states and 31711 transitions. [2021-11-12 22:44:48,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:44:48,519 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, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 476 [2021-11-12 22:44:48,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:44:48,633 INFO L225 Difference]: With dead ends: 22867 [2021-11-12 22:44:48,633 INFO L226 Difference]: Without dead ends: 22865 [2021-11-12 22:44:48,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 953 GetRequests, 945 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:44:48,645 INFO L933 BasicCegarLoop]: 4929 mSDtfsCounter, 3930 mSDsluCounter, 11067 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 108.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3944 SdHoareTripleChecker+Valid, 15996 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.45ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116.24ms IncrementalHoareTripleChecker+Time [2021-11-12 22:44:48,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3944 Valid, 15996 Invalid, 28 Unknown, 0 Unchecked, 22.45ms Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 116.24ms Time] [2021-11-12 22:44:48,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22865 states. [2021-11-12 22:44:49,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22865 to 22849. [2021-11-12 22:44:50,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22849 states, 15214 states have (on average 1.282174313132641) internal successors, (19507), 15696 states have internal predecessors, (19507), 6009 states have call successors, (6009), 1654 states have call predecessors, (6009), 1623 states have return successors, (6179), 5770 states have call predecessors, (6179), 6005 states have call successors, (6179) [2021-11-12 22:44:50,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22849 states to 22849 states and 31695 transitions. [2021-11-12 22:44:50,123 INFO L78 Accepts]: Start accepts. Automaton has 22849 states and 31695 transitions. Word has length 476 [2021-11-12 22:44:50,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:44:50,124 INFO L470 AbstractCegarLoop]: Abstraction has 22849 states and 31695 transitions. [2021-11-12 22:44:50,124 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, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-12 22:44:50,125 INFO L276 IsEmpty]: Start isEmpty. Operand 22849 states and 31695 transitions. [2021-11-12 22:44:50,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2021-11-12 22:44:50,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:44:50,133 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 34, 34, 34, 34, 34, 34, 5, 4, 4, 3, 3, 3, 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] [2021-11-12 22:44:50,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:44:50,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:44:50,346 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:44:50,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:44:50,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1626890682, now seen corresponding path program 1 times [2021-11-12 22:44:50,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:44:50,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535754527] [2021-11-12 22:44:50,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:44:50,352 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:44:50,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:44:50,354 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:44:50,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:44:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:44:56,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 2165 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:44:56,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:45:00,879 INFO L134 CoverageAnalysis]: Checked inductivity of 5422 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5414 trivial. 0 not checked. [2021-11-12 22:45:00,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:45:03,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5422 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5414 trivial. 0 not checked. [2021-11-12 22:45:03,131 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:45:03,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535754527] [2021-11-12 22:45:03,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535754527] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:45:03,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:45:03,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:45:03,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907053784] [2021-11-12 22:45:03,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:45:03,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:45:03,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:45:03,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:45:03,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:45:03,134 INFO L87 Difference]: Start difference. First operand 22849 states and 31695 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, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2021-11-12 22:45:04,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:45:04,516 INFO L93 Difference]: Finished difference Result 22977 states and 31803 transitions. [2021-11-12 22:45:04,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:45:04,516 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, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 481 [2021-11-12 22:45:04,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:45:04,632 INFO L225 Difference]: With dead ends: 22977 [2021-11-12 22:45:04,632 INFO L226 Difference]: Without dead ends: 22975 [2021-11-12 22:45:04,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 963 GetRequests, 955 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:45:04,645 INFO L933 BasicCegarLoop]: 4251 mSDtfsCounter, 4105 mSDsluCounter, 8516 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 136.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4118 SdHoareTripleChecker+Valid, 12767 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.74ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 143.76ms IncrementalHoareTripleChecker+Time [2021-11-12 22:45:04,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4118 Valid, 12767 Invalid, 28 Unknown, 0 Unchecked, 30.74ms Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 143.76ms Time] [2021-11-12 22:45:04,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22975 states. [2021-11-12 22:45:06,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22975 to 22973. [2021-11-12 22:45:06,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22973 states, 15301 states have (on average 1.28096202862558) internal successors, (19600), 15783 states have internal predecessors, (19600), 6015 states have call successors, (6015), 1685 states have call predecessors, (6015), 1654 states have return successors, (6185), 5776 states have call predecessors, (6185), 6011 states have call successors, (6185) [2021-11-12 22:45:06,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22973 states to 22973 states and 31800 transitions. [2021-11-12 22:45:06,099 INFO L78 Accepts]: Start accepts. Automaton has 22973 states and 31800 transitions. Word has length 481 [2021-11-12 22:45:06,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:45:06,100 INFO L470 AbstractCegarLoop]: Abstraction has 22973 states and 31800 transitions. [2021-11-12 22:45:06,101 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, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2021-11-12 22:45:06,101 INFO L276 IsEmpty]: Start isEmpty. Operand 22973 states and 31800 transitions. [2021-11-12 22:45:06,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2021-11-12 22:45:06,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:45:06,109 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 34, 34, 34, 34, 34, 34, 6, 5, 5, 3, 3, 3, 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] [2021-11-12 22:45:06,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:45:06,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:45:06,310 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:45:06,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:45:06,310 INFO L85 PathProgramCache]: Analyzing trace with hash -942003492, now seen corresponding path program 1 times [2021-11-12 22:45:06,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:45:06,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134534212] [2021-11-12 22:45:06,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:45:06,315 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:45:06,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:45:06,316 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:45:06,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:45:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:45:11,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 2172 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:45:12,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:45:16,788 INFO L134 CoverageAnalysis]: Checked inductivity of 5440 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5430 trivial. 0 not checked. [2021-11-12 22:45:16,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:45:18,854 INFO L134 CoverageAnalysis]: Checked inductivity of 5440 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5430 trivial. 0 not checked. [2021-11-12 22:45:18,855 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:45:18,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134534212] [2021-11-12 22:45:18,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134534212] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:45:18,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:45:18,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:45:18,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468526289] [2021-11-12 22:45:18,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:45:18,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:45:18,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:45:18,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:45:18,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:45:18,858 INFO L87 Difference]: Start difference. First operand 22973 states and 31800 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, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-12 22:45:19,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:45:19,917 INFO L93 Difference]: Finished difference Result 22979 states and 31805 transitions. [2021-11-12 22:45:19,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:45:19,917 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, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 486 [2021-11-12 22:45:19,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:45:20,022 INFO L225 Difference]: With dead ends: 22979 [2021-11-12 22:45:20,022 INFO L226 Difference]: Without dead ends: 22977 [2021-11-12 22:45:20,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 973 GetRequests, 965 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:45:20,039 INFO L933 BasicCegarLoop]: 4250 mSDtfsCounter, 4128 mSDsluCounter, 8475 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4140 SdHoareTripleChecker+Valid, 12725 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.62ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116.61ms IncrementalHoareTripleChecker+Time [2021-11-12 22:45:20,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4140 Valid, 12725 Invalid, 26 Unknown, 0 Unchecked, 18.62ms Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 116.61ms Time] [2021-11-12 22:45:20,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22977 states. [2021-11-12 22:45:21,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22977 to 22977. [2021-11-12 22:45:21,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22977 states, 15304 states have (on average 1.280906952430737) internal successors, (19603), 15786 states have internal predecessors, (19603), 6015 states have call successors, (6015), 1686 states have call predecessors, (6015), 1655 states have return successors, (6185), 5776 states have call predecessors, (6185), 6011 states have call successors, (6185) [2021-11-12 22:45:21,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22977 states to 22977 states and 31803 transitions. [2021-11-12 22:45:21,504 INFO L78 Accepts]: Start accepts. Automaton has 22977 states and 31803 transitions. Word has length 486 [2021-11-12 22:45:21,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:45:21,505 INFO L470 AbstractCegarLoop]: Abstraction has 22977 states and 31803 transitions. [2021-11-12 22:45:21,505 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, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-12 22:45:21,505 INFO L276 IsEmpty]: Start isEmpty. Operand 22977 states and 31803 transitions. [2021-11-12 22:45:21,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2021-11-12 22:45:21,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:45:21,517 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 34, 34, 34, 34, 34, 34, 7, 6, 6, 3, 3, 3, 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] [2021-11-12 22:45:21,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:45:21,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:45:21,720 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:45:21,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:45:21,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1110450502, now seen corresponding path program 1 times [2021-11-12 22:45:21,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:45:21,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1846646313] [2021-11-12 22:45:21,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:45:21,728 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:45:21,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:45:21,735 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:45:21,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:45:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:45:27,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 2179 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:45:27,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:45:32,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5462 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5450 trivial. 0 not checked. [2021-11-12 22:45:32,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:45:34,311 INFO L134 CoverageAnalysis]: Checked inductivity of 5462 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5450 trivial. 0 not checked. [2021-11-12 22:45:34,312 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:45:34,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1846646313] [2021-11-12 22:45:34,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1846646313] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:45:34,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:45:34,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:45:34,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636241161] [2021-11-12 22:45:34,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:45:34,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:45:34,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:45:34,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:45:34,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:45:34,433 INFO L87 Difference]: Start difference. First operand 22977 states and 31803 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, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-12 22:45:35,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:45:35,749 INFO L93 Difference]: Finished difference Result 22983 states and 31808 transitions. [2021-11-12 22:45:35,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:45:35,749 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, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 491 [2021-11-12 22:45:35,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:45:35,846 INFO L225 Difference]: With dead ends: 22983 [2021-11-12 22:45:35,846 INFO L226 Difference]: Without dead ends: 22981 [2021-11-12 22:45:35,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 983 GetRequests, 975 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:45:35,855 INFO L933 BasicCegarLoop]: 4250 mSDtfsCounter, 4128 mSDsluCounter, 8475 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 118.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4139 SdHoareTripleChecker+Valid, 12725 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.17ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 124.43ms IncrementalHoareTripleChecker+Time [2021-11-12 22:45:35,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4139 Valid, 12725 Invalid, 26 Unknown, 0 Unchecked, 19.17ms Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 124.43ms Time] [2021-11-12 22:45:35,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22981 states. [2021-11-12 22:45:37,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22981 to 22981. [2021-11-12 22:45:37,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22981 states, 15307 states have (on average 1.2808518978245247) internal successors, (19606), 15789 states have internal predecessors, (19606), 6015 states have call successors, (6015), 1687 states have call predecessors, (6015), 1656 states have return successors, (6185), 5776 states have call predecessors, (6185), 6011 states have call successors, (6185) [2021-11-12 22:45:37,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22981 states to 22981 states and 31806 transitions. [2021-11-12 22:45:37,250 INFO L78 Accepts]: Start accepts. Automaton has 22981 states and 31806 transitions. Word has length 491 [2021-11-12 22:45:37,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:45:37,250 INFO L470 AbstractCegarLoop]: Abstraction has 22981 states and 31806 transitions. [2021-11-12 22:45:37,251 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, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-12 22:45:37,251 INFO L276 IsEmpty]: Start isEmpty. Operand 22981 states and 31806 transitions. [2021-11-12 22:45:37,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2021-11-12 22:45:37,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:45:37,263 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 34, 34, 34, 34, 34, 34, 8, 7, 7, 4, 4, 4, 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] [2021-11-12 22:45:37,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:45:37,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:45:37,481 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:45:37,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:45:37,482 INFO L85 PathProgramCache]: Analyzing trace with hash 881706179, now seen corresponding path program 1 times [2021-11-12 22:45:37,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:45:37,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928990365] [2021-11-12 22:45:37,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:45:37,487 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:45:37,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:45:37,488 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:45:37,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 22:45:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:45:43,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 2260 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:45:43,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:45:44,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5494 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 5362 trivial. 0 not checked. [2021-11-12 22:45:44,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:45:45,340 INFO L134 CoverageAnalysis]: Checked inductivity of 5494 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5475 trivial. 0 not checked. [2021-11-12 22:45:45,341 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:45:45,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928990365] [2021-11-12 22:45:45,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928990365] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:45:45,341 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:45:45,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:45:45,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439025235] [2021-11-12 22:45:45,342 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:45:45,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:45:45,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:45:45,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:45:45,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:45:45,344 INFO L87 Difference]: Start difference. First operand 22981 states and 31806 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 4 states have call successors, (73), 3 states have call predecessors, (73), 3 states have return successors, (71), 4 states have call predecessors, (71), 4 states have call successors, (71) [2021-11-12 22:45:47,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:46:02,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:46:02,374 INFO L93 Difference]: Finished difference Result 67592 states and 93625 transitions. [2021-11-12 22:46:02,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:46:02,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 4 states have call successors, (73), 3 states have call predecessors, (73), 3 states have return successors, (71), 4 states have call predecessors, (71), 4 states have call successors, (71) Word has length 521 [2021-11-12 22:46:02,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:46:02,581 INFO L225 Difference]: With dead ends: 67592 [2021-11-12 22:46:02,581 INFO L226 Difference]: Without dead ends: 45071 [2021-11-12 22:46:02,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1040 GetRequests, 1038 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:46:02,665 INFO L933 BasicCegarLoop]: 8941 mSDtfsCounter, 8169 mSDsluCounter, 6561 mSDsCounter, 0 mSdLazyCounter, 1717 mSolverCounterSat, 773 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13142.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8169 SdHoareTripleChecker+Valid, 15502 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.27ms SdHoareTripleChecker+Time, 773 IncrementalHoareTripleChecker+Valid, 1717 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14390.32ms IncrementalHoareTripleChecker+Time [2021-11-12 22:46:02,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8169 Valid, 15502 Invalid, 2491 Unknown, 0 Unchecked, 48.27ms Time], IncrementalHoareTripleChecker [773 Valid, 1717 Invalid, 1 Unknown, 0 Unchecked, 14390.32ms Time] [2021-11-12 22:46:02,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45071 states. [2021-11-12 22:46:05,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45071 to 45011. [2021-11-12 22:46:05,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45011 states, 29969 states have (on average 1.280923621075111) internal successors, (38388), 30909 states have internal predecessors, (38388), 11793 states have call successors, (11793), 3307 states have call predecessors, (11793), 3246 states have return successors, (12137), 11334 states have call predecessors, (12137), 11789 states have call successors, (12137) [2021-11-12 22:46:05,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45011 states to 45011 states and 62318 transitions. [2021-11-12 22:46:05,648 INFO L78 Accepts]: Start accepts. Automaton has 45011 states and 62318 transitions. Word has length 521 [2021-11-12 22:46:05,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:46:05,649 INFO L470 AbstractCegarLoop]: Abstraction has 45011 states and 62318 transitions. [2021-11-12 22:46:05,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 4 states have call successors, (73), 3 states have call predecessors, (73), 3 states have return successors, (71), 4 states have call predecessors, (71), 4 states have call successors, (71) [2021-11-12 22:46:05,650 INFO L276 IsEmpty]: Start isEmpty. Operand 45011 states and 62318 transitions. [2021-11-12 22:46:05,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2021-11-12 22:46:05,663 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:46:05,664 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 34, 34, 34, 34, 34, 34, 8, 7, 7, 4, 4, 4, 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] [2021-11-12 22:46:05,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:46:05,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:46:05,886 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:46:05,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:46:05,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1332896112, now seen corresponding path program 1 times [2021-11-12 22:46:05,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:46:05,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [989322597] [2021-11-12 22:46:05,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:46:05,893 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:46:05,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:46:05,894 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:46:05,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 22:46:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:46:11,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 2261 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:46:11,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:46:13,022 INFO L134 CoverageAnalysis]: Checked inductivity of 5495 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 5362 trivial. 0 not checked. [2021-11-12 22:46:13,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:46:14,036 INFO L134 CoverageAnalysis]: Checked inductivity of 5495 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5475 trivial. 0 not checked. [2021-11-12 22:46:14,037 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:46:14,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [989322597] [2021-11-12 22:46:14,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [989322597] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:46:14,037 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:46:14,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:46:14,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771149163] [2021-11-12 22:46:14,038 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:46:14,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:46:14,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:46:14,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:46:14,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:46:14,040 INFO L87 Difference]: Start difference. First operand 45011 states and 62318 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 4 states have call successors, (73), 3 states have call predecessors, (73), 3 states have return successors, (71), 4 states have call predecessors, (71), 4 states have call successors, (71) [2021-11-12 22:46:16,305 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:46:31,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:46:31,206 INFO L93 Difference]: Finished difference Result 100646 states and 139370 transitions. [2021-11-12 22:46:31,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:46:31,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 4 states have call successors, (73), 3 states have call predecessors, (73), 3 states have return successors, (71), 4 states have call predecessors, (71), 4 states have call successors, (71) Word has length 522 [2021-11-12 22:46:31,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:46:31,450 INFO L225 Difference]: With dead ends: 100646 [2021-11-12 22:46:31,451 INFO L226 Difference]: Without dead ends: 56095 [2021-11-12 22:46:31,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1042 GetRequests, 1040 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:46:31,710 INFO L933 BasicCegarLoop]: 9118 mSDtfsCounter, 8100 mSDsluCounter, 7696 mSDsCounter, 0 mSdLazyCounter, 1654 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12203.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8100 SdHoareTripleChecker+Valid, 16814 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.66ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1654 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13132.21ms IncrementalHoareTripleChecker+Time [2021-11-12 22:46:31,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8100 Valid, 16814 Invalid, 1673 Unknown, 0 Unchecked, 45.66ms Time], IncrementalHoareTripleChecker [18 Valid, 1654 Invalid, 1 Unknown, 0 Unchecked, 13132.21ms Time] [2021-11-12 22:46:31,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56095 states. [2021-11-12 22:46:35,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56095 to 55983. [2021-11-12 22:46:35,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55983 states, 37267 states have (on average 1.2802479405372045) internal successors, (47711), 38436 states have internal predecessors, (47711), 14676 states have call successors, (14676), 4113 states have call predecessors, (14676), 4037 states have return successors, (15107), 14107 states have call predecessors, (15107), 14672 states have call successors, (15107) [2021-11-12 22:46:35,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55983 states to 55983 states and 77494 transitions. [2021-11-12 22:46:35,381 INFO L78 Accepts]: Start accepts. Automaton has 55983 states and 77494 transitions. Word has length 522 [2021-11-12 22:46:35,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:46:35,381 INFO L470 AbstractCegarLoop]: Abstraction has 55983 states and 77494 transitions. [2021-11-12 22:46:35,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 4 states have call successors, (73), 3 states have call predecessors, (73), 3 states have return successors, (71), 4 states have call predecessors, (71), 4 states have call successors, (71) [2021-11-12 22:46:35,382 INFO L276 IsEmpty]: Start isEmpty. Operand 55983 states and 77494 transitions. [2021-11-12 22:46:35,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2021-11-12 22:46:35,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:46:35,393 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 34, 34, 34, 34, 34, 34, 8, 7, 7, 3, 3, 3, 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] [2021-11-12 22:46:35,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 22:46:35,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:46:35,617 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:46:35,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:46:35,618 INFO L85 PathProgramCache]: Analyzing trace with hash 660798812, now seen corresponding path program 1 times [2021-11-12 22:46:35,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:46:35,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559705783] [2021-11-12 22:46:35,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:46:35,625 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:46:35,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:46:35,626 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:46:35,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 22:46:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:46:41,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 2186 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:46:41,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:46:46,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5488 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 5474 trivial. 0 not checked. [2021-11-12 22:46:46,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:46:48,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5488 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5474 trivial. 0 not checked. [2021-11-12 22:46:48,405 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:46:48,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559705783] [2021-11-12 22:46:48,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559705783] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:46:48,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:46:48,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:46:48,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509449621] [2021-11-12 22:46:48,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:46:48,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:46:48,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:46:48,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:46:48,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:46:48,407 INFO L87 Difference]: Start difference. First operand 55983 states and 77494 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, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-12 22:46:51,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:46:51,621 INFO L93 Difference]: Finished difference Result 56771 states and 78100 transitions. [2021-11-12 22:46:51,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:46:51,622 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, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 496 [2021-11-12 22:46:51,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:46:51,803 INFO L225 Difference]: With dead ends: 56771 [2021-11-12 22:46:51,803 INFO L226 Difference]: Without dead ends: 56769 [2021-11-12 22:46:51,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 993 GetRequests, 985 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:46:51,827 INFO L933 BasicCegarLoop]: 4257 mSDtfsCounter, 3961 mSDsluCounter, 8686 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 114.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3971 SdHoareTripleChecker+Valid, 12943 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.38ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 120.65ms IncrementalHoareTripleChecker+Time [2021-11-12 22:46:51,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3971 Valid, 12943 Invalid, 28 Unknown, 0 Unchecked, 17.38ms Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 120.65ms Time] [2021-11-12 22:46:51,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56769 states. [2021-11-12 22:46:55,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56769 to 56767. [2021-11-12 22:46:55,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56767 states, 37810 states have (on average 1.2770166622586618) internal successors, (48284), 38979 states have internal predecessors, (48284), 14691 states have call successors, (14691), 4339 states have call predecessors, (14691), 4263 states have return successors, (15122), 14122 states have call predecessors, (15122), 14687 states have call successors, (15122) [2021-11-12 22:46:55,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56767 states to 56767 states and 78097 transitions. [2021-11-12 22:46:55,744 INFO L78 Accepts]: Start accepts. Automaton has 56767 states and 78097 transitions. Word has length 496 [2021-11-12 22:46:55,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:46:55,745 INFO L470 AbstractCegarLoop]: Abstraction has 56767 states and 78097 transitions. [2021-11-12 22:46:55,745 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, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-12 22:46:55,745 INFO L276 IsEmpty]: Start isEmpty. Operand 56767 states and 78097 transitions. [2021-11-12 22:46:55,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2021-11-12 22:46:55,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:46:55,754 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 34, 34, 34, 34, 34, 34, 9, 8, 8, 3, 3, 3, 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] [2021-11-12 22:46:55,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 22:46:55,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:46:55,962 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:46:55,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:46:55,963 INFO L85 PathProgramCache]: Analyzing trace with hash 127978426, now seen corresponding path program 1 times [2021-11-12 22:46:55,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:46:55,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25368699] [2021-11-12 22:46:55,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:46:55,972 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:46:55,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:46:55,974 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:46:56,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9e8bfc-6f45-477d-b446-76e62e8b45c3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 22:47:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:47:01,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 2193 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:47:01,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:47:07,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5518 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5502 trivial. 0 not checked. [2021-11-12 22:47:07,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:47:09,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5518 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5502 trivial. 0 not checked. [2021-11-12 22:47:09,241 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:47:09,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25368699] [2021-11-12 22:47:09,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25368699] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:47:09,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:47:09,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:47:09,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039523160] [2021-11-12 22:47:09,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:47:09,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:47:09,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:47:09,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:47:09,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:47:09,244 INFO L87 Difference]: Start difference. First operand 56767 states and 78097 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, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-12 22:47:12,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:47:12,454 INFO L93 Difference]: Finished difference Result 56773 states and 78102 transitions. [2021-11-12 22:47:12,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:47:12,454 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, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 501 [2021-11-12 22:47:12,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:47:12,631 INFO L225 Difference]: With dead ends: 56773 [2021-11-12 22:47:12,631 INFO L226 Difference]: Without dead ends: 56771 [2021-11-12 22:47:12,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1003 GetRequests, 995 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:47:12,652 INFO L933 BasicCegarLoop]: 4250 mSDtfsCounter, 4128 mSDsluCounter, 8475 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4137 SdHoareTripleChecker+Valid, 12725 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.75ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116.93ms IncrementalHoareTripleChecker+Time [2021-11-12 22:47:12,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4137 Valid, 12725 Invalid, 26 Unknown, 0 Unchecked, 18.75ms Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 116.93ms Time] [2021-11-12 22:47:12,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56771 states.