./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 54849713272284bcfc1d249b79bdfa502d33e8d1537f459c00022c26afd8a94c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:33:42,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:33:42,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:33:42,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:33:42,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:33:42,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:33:42,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:33:42,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:33:42,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:33:42,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:33:42,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:33:42,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:33:42,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:33:42,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:33:42,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:33:42,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:33:42,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:33:42,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:33:42,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:33:42,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:33:42,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:33:42,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:33:42,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:33:42,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:33:42,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:33:42,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:33:42,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:33:42,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:33:42,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:33:42,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:33:42,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:33:42,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:33:42,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:33:42,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:33:42,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:33:42,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:33:42,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:33:42,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:33:42,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:33:42,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:33:42,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:33:42,745 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:33:42,793 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:33:42,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:33:42,794 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:33:42,794 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:33:42,801 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:33:42,801 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:33:42,802 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:33:42,802 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:33:42,802 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:33:42,802 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:33:42,803 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:33:42,804 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:33:42,804 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:33:42,804 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:33:42,804 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:33:42,805 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:33:42,805 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:33:42,805 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:33:42,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:33:42,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:33:42,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:33:42,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:33:42,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:33:42,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:33:42,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:33:42,808 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:33:42,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:33:42,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:33:42,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:33:42,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:33:42,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:33:42,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:33:42,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:33:42,810 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:33:42,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:33:42,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:33:42,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:33:42,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:33:42,811 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_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54849713272284bcfc1d249b79bdfa502d33e8d1537f459c00022c26afd8a94c [2021-11-21 01:33:43,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:33:43,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:33:43,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:33:43,135 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:33:43,136 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:33:43,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i [2021-11-21 01:33:43,221 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/data/154b7119b/f5ae272da7484c71aa5b62985a15963b/FLAG80796b391 [2021-11-21 01:33:44,356 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:33:44,357 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i [2021-11-21 01:33:44,407 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/data/154b7119b/f5ae272da7484c71aa5b62985a15963b/FLAG80796b391 [2021-11-21 01:33:44,695 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/data/154b7119b/f5ae272da7484c71aa5b62985a15963b [2021-11-21 01:33:44,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:33:44,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:33:44,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:33:44,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:33:44,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:33:44,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:33:44" (1/1) ... [2021-11-21 01:33:44,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb3a16d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:44, skipping insertion in model container [2021-11-21 01:33:44,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:33:44" (1/1) ... [2021-11-21 01:33:44,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:33:44,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:33:50,878 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508632,508645] [2021-11-21 01:33:50,881 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508801,508814] [2021-11-21 01:33:50,881 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508968,508981] [2021-11-21 01:33:50,882 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[509136,509149] [2021-11-21 01:33:50,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:33:50,959 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:33:51,563 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508632,508645] [2021-11-21 01:33:51,564 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508801,508814] [2021-11-21 01:33:51,564 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508968,508981] [2021-11-21 01:33:51,565 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[509136,509149] [2021-11-21 01:33:51,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:33:51,955 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:33:51,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:51 WrapperNode [2021-11-21 01:33:51,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:33:51,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:33:51,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:33:51,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:33:51,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:51" (1/1) ... [2021-11-21 01:33:52,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:51" (1/1) ... [2021-11-21 01:33:52,408 INFO L137 Inliner]: procedures = 678, calls = 4011, calls flagged for inlining = 356, calls inlined = 330, statements flattened = 10084 [2021-11-21 01:33:52,409 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:33:52,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:33:52,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:33:52,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:33:52,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:51" (1/1) ... [2021-11-21 01:33:52,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:51" (1/1) ... [2021-11-21 01:33:52,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:51" (1/1) ... [2021-11-21 01:33:52,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:51" (1/1) ... [2021-11-21 01:33:52,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:51" (1/1) ... [2021-11-21 01:33:52,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:51" (1/1) ... [2021-11-21 01:33:52,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:51" (1/1) ... [2021-11-21 01:33:52,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:33:52,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:33:52,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:33:52,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:33:52,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:51" (1/1) ... [2021-11-21 01:33:52,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:33:52,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:33:52,996 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:33:53,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:33:53,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_93 [2021-11-21 01:33:53,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_93 [2021-11-21 01:33:53,043 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-21 01:33:53,043 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-21 01:33:53,043 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-21 01:33:53,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-21 01:33:53,043 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_read_phy_core [2021-11-21 01:33:53,044 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_read_phy_core [2021-11-21 01:33:53,044 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2021-11-21 01:33:53,044 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2021-11-21 01:33:53,044 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_post_phy_linkchg [2021-11-21 01:33:53,044 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_post_phy_linkchg [2021-11-21 01:33:53,044 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 01:33:53,044 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 01:33:53,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:33:53,045 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:33:53,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_80 [2021-11-21 01:33:53,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_80 [2021-11-21 01:33:53,045 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-21 01:33:53,045 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-21 01:33:53,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:33:53,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:33:53,045 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_clean_rx_ring [2021-11-21 01:33:53,046 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_clean_rx_ring [2021-11-21 01:33:53,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:33:53,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:33:53,046 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-21 01:33:53,046 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-21 01:33:53,046 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 01:33:53,046 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 01:33:53,046 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 01:33:53,047 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 01:33:53,047 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_read_current_addr [2021-11-21 01:33:53,047 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_read_current_addr [2021-11-21 01:33:53,047 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 01:33:53,047 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 01:33:53,047 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_reset_mac [2021-11-21 01:33:53,047 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_reset_mac [2021-11-21 01:33:53,047 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_irq_disable [2021-11-21 01:33:53,048 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_irq_disable [2021-11-21 01:33:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_stop_phy_polling [2021-11-21 01:33:53,048 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_stop_phy_polling [2021-11-21 01:33:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 01:33:53,048 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 01:33:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:33:53,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:33:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 01:33:53,048 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 01:33:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-21 01:33:53,049 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-21 01:33:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 01:33:53,049 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 01:33:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:33:53,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:33:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 01:33:53,049 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 01:33:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-21 01:33:53,050 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-21 01:33:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-21 01:33:53,050 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-21 01:33:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:33:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-21 01:33:53,050 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-21 01:33:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_get_speed_and_duplex [2021-11-21 01:33:53,050 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_get_speed_and_duplex [2021-11-21 01:33:53,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_mdio_lock_of_atl1c_adapter [2021-11-21 01:33:53,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_mdio_lock_of_atl1c_adapter [2021-11-21 01:33:53,051 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-21 01:33:53,051 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-21 01:33:53,051 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_close [2021-11-21 01:33:53,051 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_close [2021-11-21 01:33:53,051 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 01:33:53,051 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 01:33:53,051 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_write_phy_reg [2021-11-21 01:33:53,052 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_write_phy_reg [2021-11-21 01:33:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:33:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_phy_init [2021-11-21 01:33:53,052 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_phy_init [2021-11-21 01:33:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_read_phy_dbg [2021-11-21 01:33:53,052 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_read_phy_dbg [2021-11-21 01:33:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_get_regs_len [2021-11-21 01:33:53,052 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_get_regs_len [2021-11-21 01:33:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 01:33:53,053 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 01:33:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 01:33:53,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 01:33:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_free_ring_resources [2021-11-21 01:33:53,053 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_free_ring_resources [2021-11-21 01:33:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:33:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:33:53,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:33:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:33:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 01:33:53,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 01:33:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:33:53,054 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:33:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 01:33:53,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 01:33:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-21 01:33:53,054 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-21 01:33:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 01:33:53,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 01:33:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 01:33:53,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 01:33:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 01:33:53,055 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 01:33:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_set_multi [2021-11-21 01:33:53,055 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_set_multi [2021-11-21 01:33:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:33:53,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:33:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:33:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:33:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-21 01:33:53,056 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-21 01:33:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:33:53,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:33:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 01:33:53,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 01:33:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:33:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_start_phy_polling [2021-11-21 01:33:53,057 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_start_phy_polling [2021-11-21 01:33:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-21 01:33:53,057 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-21 01:33:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 01:33:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:33:53,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:33:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-21 01:33:53,057 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-21 01:33:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:33:53,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:33:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2021-11-21 01:33:53,058 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2021-11-21 01:33:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_write_phy_core [2021-11-21 01:33:53,058 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_write_phy_core [2021-11-21 01:33:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_wait_until_idle [2021-11-21 01:33:53,058 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_wait_until_idle [2021-11-21 01:33:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-21 01:33:53,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-21 01:33:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-21 01:33:53,059 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-21 01:33:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:33:53,059 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:33:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_check_link_status [2021-11-21 01:33:53,059 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_check_link_status [2021-11-21 01:33:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 01:33:53,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 01:33:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_alloc_rx_buffer [2021-11-21 01:33:53,060 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_alloc_rx_buffer [2021-11-21 01:33:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mdio_lock_of_atl1c_adapter [2021-11-21 01:33:53,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mdio_lock_of_atl1c_adapter [2021-11-21 01:33:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_io_resume [2021-11-21 01:33:53,060 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_io_resume [2021-11-21 01:33:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_write_phy_dbg [2021-11-21 01:33:53,060 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_write_phy_dbg [2021-11-21 01:33:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_wait_mdio_idle [2021-11-21 01:33:53,061 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_wait_mdio_idle [2021-11-21 01:33:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-21 01:33:53,061 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-21 01:33:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 01:33:53,061 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 01:33:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_vlan_mode [2021-11-21 01:33:53,061 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_vlan_mode [2021-11-21 01:33:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_get_tx_buffer [2021-11-21 01:33:53,062 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_get_tx_buffer [2021-11-21 01:33:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_down [2021-11-21 01:33:53,062 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_down [2021-11-21 01:33:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_suspend [2021-11-21 01:33:53,062 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_suspend [2021-11-21 01:33:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:33:53,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:33:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-21 01:33:53,062 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-21 01:33:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-21 01:33:53,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-21 01:33:53,063 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-21 01:33:53,063 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-21 01:33:53,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:33:53,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:33:53,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:33:53,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:33:53,063 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 01:33:53,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 01:33:53,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:33:53,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:33:53,064 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 01:33:53,064 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 01:33:53,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-21 01:33:53,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-21 01:33:53,064 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_tx_timeout [2021-11-21 01:33:53,064 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_tx_timeout [2021-11-21 01:33:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-21 01:33:53,065 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-21 01:33:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 01:33:53,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 01:33:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_get_tpd [2021-11-21 01:33:53,065 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_get_tpd [2021-11-21 01:33:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_hw_set_mac_addr [2021-11-21 01:33:53,065 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_hw_set_mac_addr [2021-11-21 01:33:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-21 01:33:53,066 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-21 01:33:53,066 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-21 01:33:53,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-21 01:33:53,066 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-21 01:33:53,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-21 01:33:53,066 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_restart_autoneg [2021-11-21 01:33:53,066 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_restart_autoneg [2021-11-21 01:33:53,066 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_set_rxbufsize [2021-11-21 01:33:53,066 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_set_rxbufsize [2021-11-21 01:33:53,067 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-21 01:33:53,067 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-21 01:33:53,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:33:53,067 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:33:53,067 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_free_irq [2021-11-21 01:33:53,067 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_free_irq [2021-11-21 01:33:53,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-21 01:33:53,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-21 01:33:53,067 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_write_phy_ext [2021-11-21 01:33:53,068 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_write_phy_ext [2021-11-21 01:33:53,068 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-21 01:33:53,068 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-21 01:33:53,068 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 01:33:53,068 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 01:33:53,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:33:53,068 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-21 01:33:53,068 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-21 01:33:53,068 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_nway_reset [2021-11-21 01:33:53,069 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_nway_reset [2021-11-21 01:33:53,069 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_reset_dma_ring [2021-11-21 01:33:53,069 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_reset_dma_ring [2021-11-21 01:33:53,069 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 01:33:53,069 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 01:33:53,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:33:53,142 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_irq_enable [2021-11-21 01:33:53,142 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_irq_enable [2021-11-21 01:33:53,142 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-21 01:33:53,142 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-21 01:33:53,142 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_get_eeprom_len [2021-11-21 01:33:53,142 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_get_eeprom_len [2021-11-21 01:33:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:33:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 01:33:53,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 01:33:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-21 01:33:53,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-21 01:33:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_check_eeprom_exist [2021-11-21 01:33:53,143 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_check_eeprom_exist [2021-11-21 01:33:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-21 01:33:53,144 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-21 01:33:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-21 01:33:53,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-21 01:33:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_netpoll [2021-11-21 01:33:53,144 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_netpoll [2021-11-21 01:33:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 01:33:53,144 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 01:33:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:33:53,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:33:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 01:33:53,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 01:33:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_configure [2021-11-21 01:33:53,145 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_configure [2021-11-21 01:33:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-21 01:33:53,145 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-21 01:33:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_85 [2021-11-21 01:33:53,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_85 [2021-11-21 01:33:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_clean_tx_ring [2021-11-21 01:33:53,146 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_clean_tx_ring [2021-11-21 01:33:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_phy_reset [2021-11-21 01:33:53,146 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_phy_reset [2021-11-21 01:33:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_open [2021-11-21 01:33:53,146 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_open [2021-11-21 01:33:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 01:33:53,146 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 01:33:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 01:33:53,146 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 01:33:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-21 01:33:53,147 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-21 01:33:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-21 01:33:53,147 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-21 01:33:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_intr [2021-11-21 01:33:53,147 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_intr [2021-11-21 01:33:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 01:33:53,147 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 01:33:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_power_saving [2021-11-21 01:33:53,148 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_power_saving [2021-11-21 01:33:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_phy_setup_adv [2021-11-21 01:33:53,148 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_phy_setup_adv [2021-11-21 01:33:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-21 01:33:53,148 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-21 01:33:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:33:53,148 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:33:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_clean_buffer [2021-11-21 01:33:53,149 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_clean_buffer [2021-11-21 01:33:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_remove [2021-11-21 01:33:53,149 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_remove [2021-11-21 01:33:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:33:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:33:53,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:33:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_86 [2021-11-21 01:33:53,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_86 [2021-11-21 01:33:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 01:33:53,150 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 01:33:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-21 01:33:53,150 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-21 01:33:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_up [2021-11-21 01:33:53,150 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_up [2021-11-21 01:33:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-21 01:33:53,150 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-21 01:33:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_disable_l0s_l1 [2021-11-21 01:33:53,150 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_disable_l0s_l1 [2021-11-21 01:33:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_resume [2021-11-21 01:33:53,155 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_resume [2021-11-21 01:33:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2021-11-21 01:33:53,155 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2021-11-21 01:33:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_reset_pcie [2021-11-21 01:33:53,155 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_reset_pcie [2021-11-21 01:33:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:33:53,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:33:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-21 01:33:53,156 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-21 01:33:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-21 01:33:53,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-21 01:33:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_shutdown [2021-11-21 01:33:53,156 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_shutdown [2021-11-21 01:33:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_set_aspm [2021-11-21 01:33:53,157 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_set_aspm [2021-11-21 01:33:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-11-21 01:33:53,157 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-11-21 01:33:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2021-11-21 01:33:53,157 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2021-11-21 01:33:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-21 01:33:53,157 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-21 01:33:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_read_phy_reg [2021-11-21 01:33:53,158 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_read_phy_reg [2021-11-21 01:33:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:33:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:33:53,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:33:54,538 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:33:54,545 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:33:55,064 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:34:04,859 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:34:07,563 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:34:07,564 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 01:34:07,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:34:07 BoogieIcfgContainer [2021-11-21 01:34:07,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:34:07,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:34:07,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:34:07,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:34:07,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:33:44" (1/3) ... [2021-11-21 01:34:07,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c14ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:34:07, skipping insertion in model container [2021-11-21 01:34:07,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:51" (2/3) ... [2021-11-21 01:34:07,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c14ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:34:07, skipping insertion in model container [2021-11-21 01:34:07,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:34:07" (3/3) ... [2021-11-21 01:34:07,580 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i [2021-11-21 01:34:07,586 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:34:07,587 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-21 01:34:07,665 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:34:07,677 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:34:07,679 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-21 01:34:07,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 2967 states, 1723 states have (on average 1.2391178177597215) internal successors, (2135), 1778 states have internal predecessors, (2135), 1081 states have call successors, (1081), 159 states have call predecessors, (1081), 158 states have return successors, (1074), 1065 states have call predecessors, (1074), 1074 states have call successors, (1074) [2021-11-21 01:34:07,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-21 01:34:07,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:34:07,787 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-21 01:34:07,788 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:34:07,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:34:07,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1965657531, now seen corresponding path program 1 times [2021-11-21 01:34:07,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:34:07,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341843849] [2021-11-21 01:34:07,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:34:07,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:34:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:34:08,480 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 01:34:08,481 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:34:08,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341843849] [2021-11-21 01:34:08,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341843849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:34:08,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:34:08,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:34:08,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52048040] [2021-11-21 01:34:08,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:34:08,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:34:08,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:34:08,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:34:08,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:34:08,540 INFO L87 Difference]: Start difference. First operand has 2967 states, 1723 states have (on average 1.2391178177597215) internal successors, (2135), 1778 states have internal predecessors, (2135), 1081 states have call successors, (1081), 159 states have call predecessors, (1081), 158 states have return successors, (1074), 1065 states have call predecessors, (1074), 1074 states have call successors, (1074) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 01:34:12,346 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:16,446 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:19,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:34:19,287 INFO L93 Difference]: Finished difference Result 8864 states and 12986 transitions. [2021-11-21 01:34:19,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:34:19,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2021-11-21 01:34:19,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:34:19,371 INFO L225 Difference]: With dead ends: 8864 [2021-11-21 01:34:19,371 INFO L226 Difference]: Without dead ends: 5894 [2021-11-21 01:34:19,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:34:19,410 INFO L933 BasicCegarLoop]: 5461 mSDtfsCounter, 4263 mSDsluCounter, 16119 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4279 SdHoareTripleChecker+Valid, 20192 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:34:19,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4279 Valid, 20192 Invalid, 1893 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1890 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2021-11-21 01:34:19,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5894 states. [2021-11-21 01:34:20,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5894 to 5886. [2021-11-21 01:34:20,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5886 states, 3426 states have (on average 1.2340922358435493) internal successors, (4228), 3524 states have internal predecessors, (4228), 2141 states have call successors, (2141), 317 states have call predecessors, (2141), 315 states have return successors, (2135), 2117 states have call predecessors, (2135), 2135 states have call successors, (2135) [2021-11-21 01:34:20,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5886 states to 5886 states and 8504 transitions. [2021-11-21 01:34:20,206 INFO L78 Accepts]: Start accepts. Automaton has 5886 states and 8504 transitions. Word has length 35 [2021-11-21 01:34:20,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:34:20,208 INFO L470 AbstractCegarLoop]: Abstraction has 5886 states and 8504 transitions. [2021-11-21 01:34:20,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 01:34:20,208 INFO L276 IsEmpty]: Start isEmpty. Operand 5886 states and 8504 transitions. [2021-11-21 01:34:20,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-21 01:34:20,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:34:20,213 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-21 01:34:20,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:34:20,213 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:34:20,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:34:20,216 INFO L85 PathProgramCache]: Analyzing trace with hash -703999484, now seen corresponding path program 1 times [2021-11-21 01:34:20,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:34:20,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285375369] [2021-11-21 01:34:20,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:34:20,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:34:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:34:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 01:34:20,482 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:34:20,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285375369] [2021-11-21 01:34:20,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285375369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:34:20,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:34:20,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:34:20,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165757157] [2021-11-21 01:34:20,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:34:20,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:34:20,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:34:20,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:34:20,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:34:20,486 INFO L87 Difference]: Start difference. First operand 5886 states and 8504 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-21 01:34:24,044 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:26,073 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:30,036 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:32,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:34:32,840 INFO L93 Difference]: Finished difference Result 5900 states and 8513 transitions. [2021-11-21 01:34:32,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:34:32,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 40 [2021-11-21 01:34:32,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:34:32,893 INFO L225 Difference]: With dead ends: 5900 [2021-11-21 01:34:32,894 INFO L226 Difference]: Without dead ends: 5898 [2021-11-21 01:34:32,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:34:32,900 INFO L933 BasicCegarLoop]: 5431 mSDtfsCounter, 4240 mSDsluCounter, 16034 mSDsCounter, 0 mSdLazyCounter, 1889 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4254 SdHoareTripleChecker+Valid, 20077 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1889 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:34:32,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4254 Valid, 20077 Invalid, 1893 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1889 Invalid, 2 Unknown, 0 Unchecked, 11.9s Time] [2021-11-21 01:34:32,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5898 states. [2021-11-21 01:34:33,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5898 to 5890. [2021-11-21 01:34:33,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5890 states, 3429 states have (on average 1.2338874307378245) internal successors, (4231), 3527 states have internal predecessors, (4231), 2141 states have call successors, (2141), 318 states have call predecessors, (2141), 316 states have return successors, (2135), 2117 states have call predecessors, (2135), 2135 states have call successors, (2135) [2021-11-21 01:34:33,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5890 states to 5890 states and 8507 transitions. [2021-11-21 01:34:33,450 INFO L78 Accepts]: Start accepts. Automaton has 5890 states and 8507 transitions. Word has length 40 [2021-11-21 01:34:33,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:34:33,450 INFO L470 AbstractCegarLoop]: Abstraction has 5890 states and 8507 transitions. [2021-11-21 01:34:33,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-21 01:34:33,452 INFO L276 IsEmpty]: Start isEmpty. Operand 5890 states and 8507 transitions. [2021-11-21 01:34:33,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-21 01:34:33,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:34:33,462 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-21 01:34:33,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:34:33,462 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:34:33,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:34:33,463 INFO L85 PathProgramCache]: Analyzing trace with hash -2023560421, now seen corresponding path program 1 times [2021-11-21 01:34:33,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:34:33,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710111037] [2021-11-21 01:34:33,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:34:33,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:34:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:34:33,753 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 01:34:33,754 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:34:33,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710111037] [2021-11-21 01:34:33,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710111037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:34:33,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:34:33,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:34:33,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704455876] [2021-11-21 01:34:33,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:34:33,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:34:33,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:34:33,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:34:33,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:34:33,759 INFO L87 Difference]: Start difference. First operand 5890 states and 8507 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-21 01:34:37,112 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:41,694 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:43,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:34:43,012 INFO L93 Difference]: Finished difference Result 8825 states and 12736 transitions. [2021-11-21 01:34:43,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:34:43,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 45 [2021-11-21 01:34:43,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:34:43,097 INFO L225 Difference]: With dead ends: 8825 [2021-11-21 01:34:43,098 INFO L226 Difference]: Without dead ends: 8823 [2021-11-21 01:34:43,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:34:43,109 INFO L933 BasicCegarLoop]: 5793 mSDtfsCounter, 4217 mSDsluCounter, 16919 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4230 SdHoareTripleChecker+Valid, 21163 SdHoareTripleChecker+Invalid, 2136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2132 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:34:43,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4230 Valid, 21163 Invalid, 2136 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2132 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2021-11-21 01:34:43,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8823 states. [2021-11-21 01:34:43,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8823 to 8813. [2021-11-21 01:34:44,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8813 states, 5134 states have (on average 1.2339306583560576) internal successors, (6335), 5280 states have internal predecessors, (6335), 3201 states have call successors, (3201), 477 states have call predecessors, (3201), 474 states have return successors, (3192), 3164 states have call predecessors, (3192), 3192 states have call successors, (3192) [2021-11-21 01:34:44,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8813 states to 8813 states and 12728 transitions. [2021-11-21 01:34:44,079 INFO L78 Accepts]: Start accepts. Automaton has 8813 states and 12728 transitions. Word has length 45 [2021-11-21 01:34:44,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:34:44,080 INFO L470 AbstractCegarLoop]: Abstraction has 8813 states and 12728 transitions. [2021-11-21 01:34:44,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-21 01:34:44,080 INFO L276 IsEmpty]: Start isEmpty. Operand 8813 states and 12728 transitions. [2021-11-21 01:34:44,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-21 01:34:44,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:34:44,083 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:34:44,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:34:44,087 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:34:44,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:34:44,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1446431908, now seen corresponding path program 1 times [2021-11-21 01:34:44,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:34:44,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660213455] [2021-11-21 01:34:44,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:34:44,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:34:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:34:44,366 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-21 01:34:44,366 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:34:44,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660213455] [2021-11-21 01:34:44,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660213455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:34:44,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:34:44,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:34:44,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238069524] [2021-11-21 01:34:44,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:34:44,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:34:44,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:34:44,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:34:44,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:34:44,370 INFO L87 Difference]: Start difference. First operand 8813 states and 12728 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-21 01:34:46,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:48,441 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:51,811 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:54,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:34:54,263 INFO L93 Difference]: Finished difference Result 8831 states and 12741 transitions. [2021-11-21 01:34:54,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:34:54,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 56 [2021-11-21 01:34:54,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:34:54,334 INFO L225 Difference]: With dead ends: 8831 [2021-11-21 01:34:54,335 INFO L226 Difference]: Without dead ends: 8829 [2021-11-21 01:34:54,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:34:54,344 INFO L933 BasicCegarLoop]: 5431 mSDtfsCounter, 4236 mSDsluCounter, 16034 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4248 SdHoareTripleChecker+Valid, 20077 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:34:54,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4248 Valid, 20077 Invalid, 1893 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1890 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2021-11-21 01:34:54,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8829 states. [2021-11-21 01:34:55,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8829 to 8821. [2021-11-21 01:34:55,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8821 states, 5140 states have (on average 1.2336575875486382) internal successors, (6341), 5286 states have internal predecessors, (6341), 3201 states have call successors, (3201), 479 states have call predecessors, (3201), 476 states have return successors, (3192), 3164 states have call predecessors, (3192), 3192 states have call successors, (3192) [2021-11-21 01:34:55,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8821 states to 8821 states and 12734 transitions. [2021-11-21 01:34:55,150 INFO L78 Accepts]: Start accepts. Automaton has 8821 states and 12734 transitions. Word has length 56 [2021-11-21 01:34:55,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:34:55,151 INFO L470 AbstractCegarLoop]: Abstraction has 8821 states and 12734 transitions. [2021-11-21 01:34:55,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-21 01:34:55,151 INFO L276 IsEmpty]: Start isEmpty. Operand 8821 states and 12734 transitions. [2021-11-21 01:34:55,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-21 01:34:55,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:34:55,153 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 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] [2021-11-21 01:34:55,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:34:55,153 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:34:55,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:34:55,154 INFO L85 PathProgramCache]: Analyzing trace with hash -209665925, now seen corresponding path program 1 times [2021-11-21 01:34:55,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:34:55,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721662822] [2021-11-21 01:34:55,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:34:55,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:34:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:34:55,357 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-21 01:34:55,357 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:34:55,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721662822] [2021-11-21 01:34:55,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721662822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:34:55,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:34:55,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:34:55,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712600183] [2021-11-21 01:34:55,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:34:55,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:34:55,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:34:55,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:34:55,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:34:55,362 INFO L87 Difference]: Start difference. First operand 8821 states and 12734 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-21 01:34:59,411 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:03,098 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:06,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:07,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:07,180 INFO L93 Difference]: Finished difference Result 8839 states and 12747 transitions. [2021-11-21 01:35:07,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:35:07,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 55 [2021-11-21 01:35:07,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:07,227 INFO L225 Difference]: With dead ends: 8839 [2021-11-21 01:35:07,227 INFO L226 Difference]: Without dead ends: 8837 [2021-11-21 01:35:07,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:35:07,236 INFO L933 BasicCegarLoop]: 5426 mSDtfsCounter, 4240 mSDsluCounter, 16025 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4251 SdHoareTripleChecker+Valid, 20062 SdHoareTripleChecker+Invalid, 1894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:07,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4251 Valid, 20062 Invalid, 1894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1890 Invalid, 2 Unknown, 0 Unchecked, 11.5s Time] [2021-11-21 01:35:07,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8837 states. [2021-11-21 01:35:07,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8837 to 8829. [2021-11-21 01:35:07,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8829 states, 5146 states have (on average 1.233385153517295) internal successors, (6347), 5292 states have internal predecessors, (6347), 3201 states have call successors, (3201), 481 states have call predecessors, (3201), 478 states have return successors, (3192), 3164 states have call predecessors, (3192), 3192 states have call successors, (3192) [2021-11-21 01:35:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8829 states to 8829 states and 12740 transitions. [2021-11-21 01:35:08,014 INFO L78 Accepts]: Start accepts. Automaton has 8829 states and 12740 transitions. Word has length 55 [2021-11-21 01:35:08,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:08,015 INFO L470 AbstractCegarLoop]: Abstraction has 8829 states and 12740 transitions. [2021-11-21 01:35:08,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-21 01:35:08,016 INFO L276 IsEmpty]: Start isEmpty. Operand 8829 states and 12740 transitions. [2021-11-21 01:35:08,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-21 01:35:08,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:08,018 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:08,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:35:08,018 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:35:08,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:08,020 INFO L85 PathProgramCache]: Analyzing trace with hash -572548, now seen corresponding path program 1 times [2021-11-21 01:35:08,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:08,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655013512] [2021-11-21 01:35:08,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:08,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:08,234 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-21 01:35:08,234 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:08,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655013512] [2021-11-21 01:35:08,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655013512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:08,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:08,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:35:08,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784391394] [2021-11-21 01:35:08,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:08,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:35:08,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:08,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:35:08,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:35:08,237 INFO L87 Difference]: Start difference. First operand 8829 states and 12740 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-21 01:35:11,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:15,079 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:18,253 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:18,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:18,776 INFO L93 Difference]: Finished difference Result 8847 states and 12753 transitions. [2021-11-21 01:35:18,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:35:18,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 66 [2021-11-21 01:35:18,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:18,816 INFO L225 Difference]: With dead ends: 8847 [2021-11-21 01:35:18,816 INFO L226 Difference]: Without dead ends: 8845 [2021-11-21 01:35:18,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:35:18,823 INFO L933 BasicCegarLoop]: 5426 mSDtfsCounter, 4236 mSDsluCounter, 16024 mSDsCounter, 0 mSdLazyCounter, 1889 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4246 SdHoareTripleChecker+Valid, 20062 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1889 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:18,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4246 Valid, 20062 Invalid, 1893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1889 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2021-11-21 01:35:18,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8845 states. [2021-11-21 01:35:19,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8845 to 8837. [2021-11-21 01:35:19,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8837 states, 5152 states have (on average 1.2331133540372672) internal successors, (6353), 5298 states have internal predecessors, (6353), 3201 states have call successors, (3201), 483 states have call predecessors, (3201), 480 states have return successors, (3192), 3164 states have call predecessors, (3192), 3192 states have call successors, (3192) [2021-11-21 01:35:19,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8837 states to 8837 states and 12746 transitions. [2021-11-21 01:35:19,547 INFO L78 Accepts]: Start accepts. Automaton has 8837 states and 12746 transitions. Word has length 66 [2021-11-21 01:35:19,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:19,547 INFO L470 AbstractCegarLoop]: Abstraction has 8837 states and 12746 transitions. [2021-11-21 01:35:19,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-21 01:35:19,548 INFO L276 IsEmpty]: Start isEmpty. Operand 8837 states and 12746 transitions. [2021-11-21 01:35:19,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-21 01:35:19,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:19,549 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 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] [2021-11-21 01:35:19,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:35:19,550 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:35:19,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:19,550 INFO L85 PathProgramCache]: Analyzing trace with hash -531821093, now seen corresponding path program 1 times [2021-11-21 01:35:19,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:19,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535883348] [2021-11-21 01:35:19,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:19,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:19,769 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-21 01:35:19,770 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:19,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535883348] [2021-11-21 01:35:19,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535883348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:19,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:19,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:35:19,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842209533] [2021-11-21 01:35:19,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:19,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:35:19,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:19,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:35:19,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:35:19,772 INFO L87 Difference]: Start difference. First operand 8837 states and 12746 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-21 01:35:25,843 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:28,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:28,231 INFO L93 Difference]: Finished difference Result 8855 states and 12759 transitions. [2021-11-21 01:35:28,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:35:28,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 65 [2021-11-21 01:35:28,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:28,272 INFO L225 Difference]: With dead ends: 8855 [2021-11-21 01:35:28,272 INFO L226 Difference]: Without dead ends: 8853 [2021-11-21 01:35:28,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:35:28,278 INFO L933 BasicCegarLoop]: 5437 mSDtfsCounter, 4240 mSDsluCounter, 16046 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4249 SdHoareTripleChecker+Valid, 20095 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:28,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4249 Valid, 20095 Invalid, 1893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1890 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2021-11-21 01:35:28,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8853 states. [2021-11-21 01:35:28,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8853 to 8845. [2021-11-21 01:35:28,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8845 states, 5158 states have (on average 1.232842186894145) internal successors, (6359), 5304 states have internal predecessors, (6359), 3201 states have call successors, (3201), 485 states have call predecessors, (3201), 482 states have return successors, (3192), 3164 states have call predecessors, (3192), 3192 states have call successors, (3192) [2021-11-21 01:35:29,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8845 states to 8845 states and 12752 transitions. [2021-11-21 01:35:29,013 INFO L78 Accepts]: Start accepts. Automaton has 8845 states and 12752 transitions. Word has length 65 [2021-11-21 01:35:29,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:29,013 INFO L470 AbstractCegarLoop]: Abstraction has 8845 states and 12752 transitions. [2021-11-21 01:35:29,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-21 01:35:29,014 INFO L276 IsEmpty]: Start isEmpty. Operand 8845 states and 12752 transitions. [2021-11-21 01:35:29,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-21 01:35:29,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:29,016 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 3, 3, 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] [2021-11-21 01:35:29,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:35:29,017 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:35:29,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:29,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1939868572, now seen corresponding path program 1 times [2021-11-21 01:35:29,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:29,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267253249] [2021-11-21 01:35:29,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:29,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-21 01:35:29,200 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:29,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267253249] [2021-11-21 01:35:29,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267253249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:29,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:29,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:35:29,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727554948] [2021-11-21 01:35:29,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:29,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:35:29,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:29,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:35:29,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:35:29,202 INFO L87 Difference]: Start difference. First operand 8845 states and 12752 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-21 01:35:32,816 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:36,042 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:38,993 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:39,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:39,427 INFO L93 Difference]: Finished difference Result 8863 states and 12765 transitions. [2021-11-21 01:35:39,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:35:39,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2021-11-21 01:35:39,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:39,470 INFO L225 Difference]: With dead ends: 8863 [2021-11-21 01:35:39,470 INFO L226 Difference]: Without dead ends: 8861 [2021-11-21 01:35:39,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:35:39,477 INFO L933 BasicCegarLoop]: 5437 mSDtfsCounter, 4240 mSDsluCounter, 16046 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4248 SdHoareTripleChecker+Valid, 20095 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:39,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4248 Valid, 20095 Invalid, 1893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1890 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2021-11-21 01:35:39,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8861 states. [2021-11-21 01:35:40,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8861 to 8853. [2021-11-21 01:35:40,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8853 states, 5164 states have (on average 1.232571649883811) internal successors, (6365), 5310 states have internal predecessors, (6365), 3201 states have call successors, (3201), 487 states have call predecessors, (3201), 484 states have return successors, (3192), 3164 states have call predecessors, (3192), 3192 states have call successors, (3192) [2021-11-21 01:35:40,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8853 states to 8853 states and 12758 transitions. [2021-11-21 01:35:40,225 INFO L78 Accepts]: Start accepts. Automaton has 8853 states and 12758 transitions. Word has length 70 [2021-11-21 01:35:40,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:40,226 INFO L470 AbstractCegarLoop]: Abstraction has 8853 states and 12758 transitions. [2021-11-21 01:35:40,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-21 01:35:40,226 INFO L276 IsEmpty]: Start isEmpty. Operand 8853 states and 12758 transitions. [2021-11-21 01:35:40,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-21 01:35:40,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:40,229 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 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] [2021-11-21 01:35:40,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:35:40,229 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:35:40,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:40,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1168187, now seen corresponding path program 1 times [2021-11-21 01:35:40,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:40,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209912475] [2021-11-21 01:35:40,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:40,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:40,464 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-21 01:35:40,464 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:40,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209912475] [2021-11-21 01:35:40,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209912475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:40,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:40,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:35:40,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771025525] [2021-11-21 01:35:40,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:40,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:35:40,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:40,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:35:40,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:35:40,467 INFO L87 Difference]: Start difference. First operand 8853 states and 12758 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-21 01:35:43,840 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:47,762 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:49,933 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:50,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:50,379 INFO L93 Difference]: Finished difference Result 11893 states and 17132 transitions. [2021-11-21 01:35:50,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:35:50,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 75 [2021-11-21 01:35:50,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:50,443 INFO L225 Difference]: With dead ends: 11893 [2021-11-21 01:35:50,443 INFO L226 Difference]: Without dead ends: 11891 [2021-11-21 01:35:50,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:35:50,453 INFO L933 BasicCegarLoop]: 5466 mSDtfsCounter, 4208 mSDsluCounter, 15934 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4215 SdHoareTripleChecker+Valid, 20029 SdHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:50,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4215 Valid, 20029 Invalid, 1879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1875 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2021-11-21 01:35:50,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11891 states. [2021-11-21 01:35:51,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11891 to 11882. [2021-11-21 01:35:51,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11882 states, 6947 states have (on average 1.233338131567583) internal successors, (8568), 7147 states have internal predecessors, (8568), 4263 states have call successors, (4263), 675 states have call predecessors, (4263), 668 states have return successors, (4292), 4205 states have call predecessors, (4292), 4251 states have call successors, (4292) [2021-11-21 01:35:51,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11882 states to 11882 states and 17123 transitions. [2021-11-21 01:35:51,352 INFO L78 Accepts]: Start accepts. Automaton has 11882 states and 17123 transitions. Word has length 75 [2021-11-21 01:35:51,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:51,353 INFO L470 AbstractCegarLoop]: Abstraction has 11882 states and 17123 transitions. [2021-11-21 01:35:51,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-21 01:35:51,353 INFO L276 IsEmpty]: Start isEmpty. Operand 11882 states and 17123 transitions. [2021-11-21 01:35:51,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-21 01:35:51,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:51,361 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 3, 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] [2021-11-21 01:35:51,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:35:51,361 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:35:51,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:51,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1977203332, now seen corresponding path program 1 times [2021-11-21 01:35:51,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:51,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275842817] [2021-11-21 01:35:51,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:51,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:51,538 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-21 01:35:51,538 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:51,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275842817] [2021-11-21 01:35:51,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275842817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:51,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:51,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:35:51,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482287540] [2021-11-21 01:35:51,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:51,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:35:51,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:51,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:35:51,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:35:51,541 INFO L87 Difference]: Start difference. First operand 11882 states and 17123 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-21 01:35:55,361 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:58,402 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:36:00,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:36:00,576 INFO L93 Difference]: Finished difference Result 11900 states and 17136 transitions. [2021-11-21 01:36:00,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:36:00,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 80 [2021-11-21 01:36:00,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:36:00,633 INFO L225 Difference]: With dead ends: 11900 [2021-11-21 01:36:00,633 INFO L226 Difference]: Without dead ends: 11898 [2021-11-21 01:36:00,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:36:00,643 INFO L933 BasicCegarLoop]: 5435 mSDtfsCounter, 4240 mSDsluCounter, 16040 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4246 SdHoareTripleChecker+Valid, 20089 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:36:00,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4246 Valid, 20089 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1887 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2021-11-21 01:36:00,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11898 states. [2021-11-21 01:36:01,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11898 to 11890. [2021-11-21 01:36:01,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11890 states, 6953 states have (on average 1.233136775492593) internal successors, (8574), 7153 states have internal predecessors, (8574), 4263 states have call successors, (4263), 677 states have call predecessors, (4263), 670 states have return successors, (4292), 4205 states have call predecessors, (4292), 4251 states have call successors, (4292) [2021-11-21 01:36:01,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11890 states to 11890 states and 17129 transitions. [2021-11-21 01:36:01,502 INFO L78 Accepts]: Start accepts. Automaton has 11890 states and 17129 transitions. Word has length 80 [2021-11-21 01:36:01,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:36:01,503 INFO L470 AbstractCegarLoop]: Abstraction has 11890 states and 17129 transitions. [2021-11-21 01:36:01,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-21 01:36:01,503 INFO L276 IsEmpty]: Start isEmpty. Operand 11890 states and 17129 transitions. [2021-11-21 01:36:01,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-21 01:36:01,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:36:01,506 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:36:01,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:36:01,506 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:36:01,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:36:01,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1355648209, now seen corresponding path program 1 times [2021-11-21 01:36:01,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:36:01,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330794566] [2021-11-21 01:36:01,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:01,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:36:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:36:01,723 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-21 01:36:01,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:36:01,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330794566] [2021-11-21 01:36:01,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330794566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:36:01,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:36:01,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:36:01,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678533822] [2021-11-21 01:36:01,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:36:01,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:36:01,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:36:01,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:36:01,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:36:01,726 INFO L87 Difference]: Start difference. First operand 11890 states and 17129 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-21 01:36:04,204 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:36:05,415 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:36:07,275 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:36:10,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:36:12,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:36:12,362 INFO L93 Difference]: Finished difference Result 11899 states and 17134 transitions. [2021-11-21 01:36:12,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:36:12,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 103 [2021-11-21 01:36:12,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:36:12,414 INFO L225 Difference]: With dead ends: 11899 [2021-11-21 01:36:12,414 INFO L226 Difference]: Without dead ends: 11897 [2021-11-21 01:36:12,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:36:12,423 INFO L933 BasicCegarLoop]: 5469 mSDtfsCounter, 4204 mSDsluCounter, 15961 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4205 SdHoareTripleChecker+Valid, 20059 SdHoareTripleChecker+Invalid, 1863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:36:12,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4205 Valid, 20059 Invalid, 1863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1860 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2021-11-21 01:36:12,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11897 states. [2021-11-21 01:36:13,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11897 to 11890. [2021-11-21 01:36:13,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11890 states, 6953 states have (on average 1.2327053070617) internal successors, (8571), 7153 states have internal predecessors, (8571), 4263 states have call successors, (4263), 677 states have call predecessors, (4263), 670 states have return successors, (4292), 4205 states have call predecessors, (4292), 4251 states have call successors, (4292) [2021-11-21 01:36:13,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11890 states to 11890 states and 17126 transitions. [2021-11-21 01:36:13,182 INFO L78 Accepts]: Start accepts. Automaton has 11890 states and 17126 transitions. Word has length 103 [2021-11-21 01:36:13,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:36:13,182 INFO L470 AbstractCegarLoop]: Abstraction has 11890 states and 17126 transitions. [2021-11-21 01:36:13,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-21 01:36:13,182 INFO L276 IsEmpty]: Start isEmpty. Operand 11890 states and 17126 transitions. [2021-11-21 01:36:13,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-21 01:36:13,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:36:13,184 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 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] [2021-11-21 01:36:13,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 01:36:13,185 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:36:13,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:36:13,185 INFO L85 PathProgramCache]: Analyzing trace with hash 815337627, now seen corresponding path program 1 times [2021-11-21 01:36:13,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:36:13,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876307682] [2021-11-21 01:36:13,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:13,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:36:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:36:13,349 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2021-11-21 01:36:13,350 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:36:13,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876307682] [2021-11-21 01:36:13,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876307682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:36:13,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:36:13,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:36:13,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502880514] [2021-11-21 01:36:13,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:36:13,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:36:13,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:36:13,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:36:13,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:36:13,352 INFO L87 Difference]: Start difference. First operand 11890 states and 17126 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-21 01:36:16,825 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:36:18,506 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:36:21,625 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:36:23,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:36:23,797 INFO L93 Difference]: Finished difference Result 11906 states and 17138 transitions. [2021-11-21 01:36:23,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:36:23,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 85 [2021-11-21 01:36:23,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:36:23,848 INFO L225 Difference]: With dead ends: 11906 [2021-11-21 01:36:23,849 INFO L226 Difference]: Without dead ends: 11904 [2021-11-21 01:36:23,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:36:23,859 INFO L933 BasicCegarLoop]: 5440 mSDtfsCounter, 4238 mSDsluCounter, 16050 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4243 SdHoareTripleChecker+Valid, 20104 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:36:23,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4243 Valid, 20104 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1887 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2021-11-21 01:36:23,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11904 states. [2021-11-21 01:36:24,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11904 to 11898. [2021-11-21 01:36:24,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11898 states, 6959 states have (on average 1.2325046702112372) internal successors, (8577), 7159 states have internal predecessors, (8577), 4263 states have call successors, (4263), 679 states have call predecessors, (4263), 672 states have return successors, (4292), 4205 states have call predecessors, (4292), 4251 states have call successors, (4292) [2021-11-21 01:36:24,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11898 states to 11898 states and 17132 transitions. [2021-11-21 01:36:24,646 INFO L78 Accepts]: Start accepts. Automaton has 11898 states and 17132 transitions. Word has length 85 [2021-11-21 01:36:24,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:36:24,647 INFO L470 AbstractCegarLoop]: Abstraction has 11898 states and 17132 transitions. [2021-11-21 01:36:24,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-21 01:36:24,647 INFO L276 IsEmpty]: Start isEmpty. Operand 11898 states and 17132 transitions. [2021-11-21 01:36:24,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-21 01:36:24,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:36:24,650 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:36:24,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 01:36:24,651 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:36:24,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:36:24,651 INFO L85 PathProgramCache]: Analyzing trace with hash 93430748, now seen corresponding path program 1 times [2021-11-21 01:36:24,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:36:24,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463676365] [2021-11-21 01:36:24,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:24,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:36:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:36:24,824 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-11-21 01:36:24,824 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:36:24,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463676365] [2021-11-21 01:36:24,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463676365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:36:24,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:36:24,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:36:24,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085142645] [2021-11-21 01:36:24,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:36:24,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:36:24,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:36:24,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:36:24,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:36:24,827 INFO L87 Difference]: Start difference. First operand 11898 states and 17132 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-21 01:36:28,191 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:36:31,528 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:36:34,662 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:36:35,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:36:35,106 INFO L93 Difference]: Finished difference Result 11914 states and 17144 transitions. [2021-11-21 01:36:35,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:36:35,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 96 [2021-11-21 01:36:35,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:36:35,149 INFO L225 Difference]: With dead ends: 11914 [2021-11-21 01:36:35,149 INFO L226 Difference]: Without dead ends: 11912 [2021-11-21 01:36:35,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:36:35,159 INFO L933 BasicCegarLoop]: 5435 mSDtfsCounter, 4234 mSDsluCounter, 16040 mSDsCounter, 0 mSdLazyCounter, 1886 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4238 SdHoareTripleChecker+Valid, 20089 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1886 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:36:35,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4238 Valid, 20089 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1886 Invalid, 2 Unknown, 0 Unchecked, 9.8s Time] [2021-11-21 01:36:35,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11912 states. [2021-11-21 01:36:35,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11912 to 11906. [2021-11-21 01:36:35,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11906 states, 6965 states have (on average 1.2323043790380475) internal successors, (8583), 7165 states have internal predecessors, (8583), 4263 states have call successors, (4263), 681 states have call predecessors, (4263), 674 states have return successors, (4292), 4205 states have call predecessors, (4292), 4251 states have call successors, (4292) [2021-11-21 01:36:35,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11906 states to 11906 states and 17138 transitions. [2021-11-21 01:36:35,966 INFO L78 Accepts]: Start accepts. Automaton has 11906 states and 17138 transitions. Word has length 96 [2021-11-21 01:36:35,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:36:35,967 INFO L470 AbstractCegarLoop]: Abstraction has 11906 states and 17138 transitions. [2021-11-21 01:36:35,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-21 01:36:35,967 INFO L276 IsEmpty]: Start isEmpty. Operand 11906 states and 17138 transitions. [2021-11-21 01:36:35,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-21 01:36:35,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:36:35,971 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 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] [2021-11-21 01:36:35,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 01:36:35,971 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:36:35,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:36:35,972 INFO L85 PathProgramCache]: Analyzing trace with hash 455919099, now seen corresponding path program 1 times [2021-11-21 01:36:35,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:36:35,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765224198] [2021-11-21 01:36:35,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:35,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:36:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:36:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-21 01:36:36,127 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:36:36,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765224198] [2021-11-21 01:36:36,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765224198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:36:36,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:36:36,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:36:36,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042842933] [2021-11-21 01:36:36,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:36:36,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:36:36,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:36:36,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:36:36,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:36:36,130 INFO L87 Difference]: Start difference. First operand 11906 states and 17138 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-21 01:36:39,870 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:36:43,895 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:36:48,101 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:36:48,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:36:48,694 INFO L93 Difference]: Finished difference Result 11922 states and 17150 transitions. [2021-11-21 01:36:48,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:36:48,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 95 [2021-11-21 01:36:48,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:36:48,754 INFO L225 Difference]: With dead ends: 11922 [2021-11-21 01:36:48,755 INFO L226 Difference]: Without dead ends: 11920 [2021-11-21 01:36:48,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:36:48,766 INFO L933 BasicCegarLoop]: 5435 mSDtfsCounter, 4238 mSDsluCounter, 16041 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4241 SdHoareTripleChecker+Valid, 20089 SdHoareTripleChecker+Invalid, 1891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:36:48,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4241 Valid, 20089 Invalid, 1891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1887 Invalid, 2 Unknown, 0 Unchecked, 12.1s Time] [2021-11-21 01:36:48,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11920 states. [2021-11-21 01:36:49,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11920 to 11914. [2021-11-21 01:36:49,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11914 states, 6971 states have (on average 1.232104432649548) internal successors, (8589), 7171 states have internal predecessors, (8589), 4263 states have call successors, (4263), 683 states have call predecessors, (4263), 676 states have return successors, (4292), 4205 states have call predecessors, (4292), 4251 states have call successors, (4292) [2021-11-21 01:36:49,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11914 states to 11914 states and 17144 transitions. [2021-11-21 01:36:49,481 INFO L78 Accepts]: Start accepts. Automaton has 11914 states and 17144 transitions. Word has length 95 [2021-11-21 01:36:49,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:36:49,482 INFO L470 AbstractCegarLoop]: Abstraction has 11914 states and 17144 transitions. [2021-11-21 01:36:49,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-21 01:36:49,483 INFO L276 IsEmpty]: Start isEmpty. Operand 11914 states and 17144 transitions. [2021-11-21 01:36:49,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-21 01:36:49,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:36:49,487 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 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] [2021-11-21 01:36:49,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-21 01:36:49,488 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:36:49,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:36:49,488 INFO L85 PathProgramCache]: Analyzing trace with hash 2010963652, now seen corresponding path program 1 times [2021-11-21 01:36:49,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:36:49,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719465216] [2021-11-21 01:36:49,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:49,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:36:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:36:49,676 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2021-11-21 01:36:49,676 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:36:49,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719465216] [2021-11-21 01:36:49,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719465216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:36:49,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:36:49,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:36:49,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102206159] [2021-11-21 01:36:49,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:36:49,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:36:49,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:36:49,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:36:49,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:36:49,679 INFO L87 Difference]: Start difference. First operand 11914 states and 17144 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 01:36:54,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:36:58,235 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:37:00,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:00,510 INFO L93 Difference]: Finished difference Result 11930 states and 17156 transitions. [2021-11-21 01:37:00,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:37:00,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 100 [2021-11-21 01:37:00,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:00,546 INFO L225 Difference]: With dead ends: 11930 [2021-11-21 01:37:00,546 INFO L226 Difference]: Without dead ends: 11928 [2021-11-21 01:37:00,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:37:00,553 INFO L933 BasicCegarLoop]: 5440 mSDtfsCounter, 4238 mSDsluCounter, 16050 mSDsCounter, 0 mSdLazyCounter, 1886 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4240 SdHoareTripleChecker+Valid, 20104 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1886 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:00,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4240 Valid, 20104 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1886 Invalid, 2 Unknown, 0 Unchecked, 10.3s Time] [2021-11-21 01:37:00,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11928 states. [2021-11-21 01:37:01,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11928 to 11922. [2021-11-21 01:37:01,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11922 states, 6977 states have (on average 1.2319048301562276) internal successors, (8595), 7177 states have internal predecessors, (8595), 4263 states have call successors, (4263), 685 states have call predecessors, (4263), 678 states have return successors, (4292), 4205 states have call predecessors, (4292), 4251 states have call successors, (4292) [2021-11-21 01:37:01,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11922 states to 11922 states and 17150 transitions. [2021-11-21 01:37:01,233 INFO L78 Accepts]: Start accepts. Automaton has 11922 states and 17150 transitions. Word has length 100 [2021-11-21 01:37:01,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:01,234 INFO L470 AbstractCegarLoop]: Abstraction has 11922 states and 17150 transitions. [2021-11-21 01:37:01,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 01:37:01,234 INFO L276 IsEmpty]: Start isEmpty. Operand 11922 states and 17150 transitions. [2021-11-21 01:37:01,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-21 01:37:01,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:01,236 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 3, 3, 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] [2021-11-21 01:37:01,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-21 01:37:01,237 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:37:01,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:01,237 INFO L85 PathProgramCache]: Analyzing trace with hash -728304805, now seen corresponding path program 1 times [2021-11-21 01:37:01,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:37:01,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872991477] [2021-11-21 01:37:01,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:01,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:37:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:01,386 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2021-11-21 01:37:01,387 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:37:01,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872991477] [2021-11-21 01:37:01,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872991477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:01,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:01,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:37:01,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843047452] [2021-11-21 01:37:01,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:01,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:37:01,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:37:01,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:37:01,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:37:01,389 INFO L87 Difference]: Start difference. First operand 11922 states and 17150 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-21 01:37:05,626 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:37:08,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:37:11,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:11,932 INFO L93 Difference]: Finished difference Result 11938 states and 17162 transitions. [2021-11-21 01:37:11,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:37:11,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 105 [2021-11-21 01:37:11,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:11,966 INFO L225 Difference]: With dead ends: 11938 [2021-11-21 01:37:11,966 INFO L226 Difference]: Without dead ends: 11934 [2021-11-21 01:37:11,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:37:11,971 INFO L933 BasicCegarLoop]: 5440 mSDtfsCounter, 4238 mSDsluCounter, 16051 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4239 SdHoareTripleChecker+Valid, 20104 SdHoareTripleChecker+Invalid, 1891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:11,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4239 Valid, 20104 Invalid, 1891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1887 Invalid, 2 Unknown, 0 Unchecked, 10.0s Time] [2021-11-21 01:37:11,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11934 states. [2021-11-21 01:37:12,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11934 to 11928. [2021-11-21 01:37:12,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11928 states, 6982 states have (on average 1.2315955313663707) internal successors, (8599), 7181 states have internal predecessors, (8599), 4263 states have call successors, (4263), 687 states have call predecessors, (4263), 679 states have return successors, (4292), 4205 states have call predecessors, (4292), 4251 states have call successors, (4292) [2021-11-21 01:37:12,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11928 states to 11928 states and 17154 transitions. [2021-11-21 01:37:12,604 INFO L78 Accepts]: Start accepts. Automaton has 11928 states and 17154 transitions. Word has length 105 [2021-11-21 01:37:12,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:12,604 INFO L470 AbstractCegarLoop]: Abstraction has 11928 states and 17154 transitions. [2021-11-21 01:37:12,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-21 01:37:12,604 INFO L276 IsEmpty]: Start isEmpty. Operand 11928 states and 17154 transitions. [2021-11-21 01:37:12,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-21 01:37:12,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:12,608 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:12,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-21 01:37:12,608 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:37:12,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:12,609 INFO L85 PathProgramCache]: Analyzing trace with hash 2023885852, now seen corresponding path program 1 times [2021-11-21 01:37:12,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:37:12,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065135983] [2021-11-21 01:37:12,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:12,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:37:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:12,766 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-21 01:37:12,768 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:37:12,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065135983] [2021-11-21 01:37:12,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065135983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:12,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:12,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:37:12,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659680392] [2021-11-21 01:37:12,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:12,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:37:12,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:37:12,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:37:12,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:37:12,771 INFO L87 Difference]: Start difference. First operand 11928 states and 17154 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-21 01:37:16,855 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:37:18,151 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:37:21,400 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:37:24,573 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:37:25,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:25,098 INFO L93 Difference]: Finished difference Result 23008 states and 33035 transitions. [2021-11-21 01:37:25,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:37:25,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 116 [2021-11-21 01:37:25,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:25,183 INFO L225 Difference]: With dead ends: 23008 [2021-11-21 01:37:25,183 INFO L226 Difference]: Without dead ends: 22844 [2021-11-21 01:37:25,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:37:25,196 INFO L933 BasicCegarLoop]: 5170 mSDtfsCounter, 3937 mSDsluCounter, 15437 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3937 SdHoareTripleChecker+Valid, 19280 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:25,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3937 Valid, 19280 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1799 Invalid, 2 Unknown, 0 Unchecked, 11.5s Time] [2021-11-21 01:37:25,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22844 states. [2021-11-21 01:37:26,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22844 to 22830. [2021-11-21 01:37:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22830 states, 13364 states have (on average 1.23263992816522) internal successors, (16473), 13746 states have internal predecessors, (16473), 8160 states have call successors, (8160), 1316 states have call predecessors, (8160), 1302 states have return successors, (8220), 8046 states have call predecessors, (8220), 8138 states have call successors, (8220) [2021-11-21 01:37:26,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22830 states to 22830 states and 32853 transitions. [2021-11-21 01:37:26,871 INFO L78 Accepts]: Start accepts. Automaton has 22830 states and 32853 transitions. Word has length 116 [2021-11-21 01:37:26,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:26,871 INFO L470 AbstractCegarLoop]: Abstraction has 22830 states and 32853 transitions. [2021-11-21 01:37:26,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-21 01:37:26,872 INFO L276 IsEmpty]: Start isEmpty. Operand 22830 states and 32853 transitions. [2021-11-21 01:37:26,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-21 01:37:26,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:26,878 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:26,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-21 01:37:26,878 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:37:26,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:26,878 INFO L85 PathProgramCache]: Analyzing trace with hash -2145185121, now seen corresponding path program 1 times [2021-11-21 01:37:26,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:37:26,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528788809] [2021-11-21 01:37:26,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:26,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:37:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:27,072 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-11-21 01:37:27,072 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:37:27,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528788809] [2021-11-21 01:37:27,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528788809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:27,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:27,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:37:27,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596064899] [2021-11-21 01:37:27,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:27,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:37:27,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:37:27,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:37:27,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:37:27,074 INFO L87 Difference]: Start difference. First operand 22830 states and 32853 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-21 01:37:30,247 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:37:33,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:37:34,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:34,285 INFO L93 Difference]: Finished difference Result 45824 states and 67173 transitions. [2021-11-21 01:37:34,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:37:34,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 161 [2021-11-21 01:37:34,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:34,380 INFO L225 Difference]: With dead ends: 45824 [2021-11-21 01:37:34,380 INFO L226 Difference]: Without dead ends: 23010 [2021-11-21 01:37:34,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:37:34,710 INFO L933 BasicCegarLoop]: 3835 mSDtfsCounter, 10 mSDsluCounter, 4259 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 7663 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:34,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 7663 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 869 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-11-21 01:37:34,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23010 states. [2021-11-21 01:37:36,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23010 to 22842. [2021-11-21 01:37:36,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22842 states, 13376 states have (on average 1.2324312200956937) internal successors, (16485), 13758 states have internal predecessors, (16485), 8160 states have call successors, (8160), 1316 states have call predecessors, (8160), 1302 states have return successors, (8220), 8046 states have call predecessors, (8220), 8138 states have call successors, (8220) [2021-11-21 01:37:36,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22842 states to 22842 states and 32865 transitions. [2021-11-21 01:37:36,622 INFO L78 Accepts]: Start accepts. Automaton has 22842 states and 32865 transitions. Word has length 161 [2021-11-21 01:37:36,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:36,623 INFO L470 AbstractCegarLoop]: Abstraction has 22842 states and 32865 transitions. [2021-11-21 01:37:36,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-21 01:37:36,623 INFO L276 IsEmpty]: Start isEmpty. Operand 22842 states and 32865 transitions. [2021-11-21 01:37:36,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-21 01:37:36,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:36,630 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:36,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-21 01:37:36,630 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:37:36,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:36,631 INFO L85 PathProgramCache]: Analyzing trace with hash 2020244875, now seen corresponding path program 1 times [2021-11-21 01:37:36,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:37:36,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384831581] [2021-11-21 01:37:36,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:36,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:37:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-11-21 01:37:36,835 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:37:36,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384831581] [2021-11-21 01:37:36,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384831581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:36,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:36,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:37:36,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907571712] [2021-11-21 01:37:36,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:36,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:37:36,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:37:36,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:37:36,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:37:36,841 INFO L87 Difference]: Start difference. First operand 22842 states and 32865 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-21 01:37:41,077 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:37:43,107 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:37:45,140 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:37:48,853 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:37:49,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:49,706 INFO L93 Difference]: Finished difference Result 23096 states and 33186 transitions. [2021-11-21 01:37:49,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:37:49,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 171 [2021-11-21 01:37:49,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:49,828 INFO L225 Difference]: With dead ends: 23096 [2021-11-21 01:37:49,828 INFO L226 Difference]: Without dead ends: 22884 [2021-11-21 01:37:49,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:37:49,844 INFO L933 BasicCegarLoop]: 3899 mSDtfsCounter, 230 mSDsluCounter, 12873 mSDsCounter, 0 mSdLazyCounter, 1764 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 15461 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1764 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:49,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 15461 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1764 Invalid, 4 Unknown, 0 Unchecked, 12.1s Time] [2021-11-21 01:37:49,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22884 states. [2021-11-21 01:37:51,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22884 to 22884. [2021-11-21 01:37:51,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22884 states, 13404 states have (on average 1.2307520143240824) internal successors, (16497), 13776 states have internal predecessors, (16497), 8146 states have call successors, (8146), 1344 states have call predecessors, (8146), 1330 states have return successors, (8207), 8038 states have call predecessors, (8207), 8125 states have call successors, (8207) [2021-11-21 01:37:51,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22884 states to 22884 states and 32850 transitions. [2021-11-21 01:37:51,538 INFO L78 Accepts]: Start accepts. Automaton has 22884 states and 32850 transitions. Word has length 171 [2021-11-21 01:37:51,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:51,538 INFO L470 AbstractCegarLoop]: Abstraction has 22884 states and 32850 transitions. [2021-11-21 01:37:51,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-21 01:37:51,539 INFO L276 IsEmpty]: Start isEmpty. Operand 22884 states and 32850 transitions. [2021-11-21 01:37:51,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-11-21 01:37:51,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:51,551 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:51,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-21 01:37:51,551 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:37:51,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:51,552 INFO L85 PathProgramCache]: Analyzing trace with hash -804731660, now seen corresponding path program 1 times [2021-11-21 01:37:51,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:37:51,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094277731] [2021-11-21 01:37:51,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:51,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:37:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:52,113 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-11-21 01:37:52,113 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:37:52,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094277731] [2021-11-21 01:37:52,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094277731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:52,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:52,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:37:52,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375533215] [2021-11-21 01:37:52,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:52,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:37:52,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:37:52,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:37:52,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:37:52,116 INFO L87 Difference]: Start difference. First operand 22884 states and 32850 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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) [2021-11-21 01:37:56,866 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:00,249 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:03,623 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:04,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:04,828 INFO L93 Difference]: Finished difference Result 22898 states and 32860 transitions. [2021-11-21 01:38:04,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:38:04,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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 260 [2021-11-21 01:38:04,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:04,926 INFO L225 Difference]: With dead ends: 22898 [2021-11-21 01:38:04,927 INFO L226 Difference]: Without dead ends: 22666 [2021-11-21 01:38:04,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:38:04,943 INFO L933 BasicCegarLoop]: 5244 mSDtfsCounter, 4157 mSDsluCounter, 15597 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4170 SdHoareTripleChecker+Valid, 19514 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1798 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:04,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4170 Valid, 19514 Invalid, 1803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1798 Invalid, 3 Unknown, 0 Unchecked, 11.8s Time] [2021-11-21 01:38:04,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22666 states. [2021-11-21 01:38:06,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22666 to 22578. [2021-11-21 01:38:06,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22578 states, 13220 states have (on average 1.2303328290468987) internal successors, (16265), 13579 states have internal predecessors, (16265), 8044 states have call successors, (8044), 1322 states have call predecessors, (8044), 1310 states have return successors, (8111), 7945 states have call predecessors, (8111), 8029 states have call successors, (8111) [2021-11-21 01:38:06,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22578 states to 22578 states and 32420 transitions. [2021-11-21 01:38:06,633 INFO L78 Accepts]: Start accepts. Automaton has 22578 states and 32420 transitions. Word has length 260 [2021-11-21 01:38:06,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:06,634 INFO L470 AbstractCegarLoop]: Abstraction has 22578 states and 32420 transitions. [2021-11-21 01:38:06,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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) [2021-11-21 01:38:06,634 INFO L276 IsEmpty]: Start isEmpty. Operand 22578 states and 32420 transitions. [2021-11-21 01:38:06,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 896 [2021-11-21 01:38:06,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:06,844 INFO L514 BasicCegarLoop]: trace histogram [26, 23, 20, 13, 13, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:06,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-21 01:38:06,844 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:38:06,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:06,845 INFO L85 PathProgramCache]: Analyzing trace with hash -30015780, now seen corresponding path program 1 times [2021-11-21 01:38:06,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:06,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163027855] [2021-11-21 01:38:06,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:06,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:07,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2774 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2774 trivial. 0 not checked. [2021-11-21 01:38:07,316 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:07,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163027855] [2021-11-21 01:38:07,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163027855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:07,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:38:07,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:38:07,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992654266] [2021-11-21 01:38:07,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:07,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:38:07,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:07,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:38:07,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:38:07,320 INFO L87 Difference]: Start difference. First operand 22578 states and 32420 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 2 states have call successors, (117), 2 states have call predecessors, (117), 1 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2021-11-21 01:38:12,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:13,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:13,128 INFO L93 Difference]: Finished difference Result 44853 states and 64848 transitions. [2021-11-21 01:38:13,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:38:13,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 2 states have call successors, (117), 2 states have call predecessors, (117), 1 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) Word has length 895 [2021-11-21 01:38:13,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:13,316 INFO L225 Difference]: With dead ends: 44853 [2021-11-21 01:38:13,316 INFO L226 Difference]: Without dead ends: 22289 [2021-11-21 01:38:13,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:38:13,366 INFO L933 BasicCegarLoop]: 4799 mSDtfsCounter, 878 mSDsluCounter, 4314 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 8691 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:13,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1307 Valid, 8691 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 934 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-11-21 01:38:13,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22289 states. [2021-11-21 01:38:15,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22289 to 18821. [2021-11-21 01:38:15,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18821 states, 10999 states have (on average 1.2278388944449496) internal successors, (13505), 11297 states have internal predecessors, (13505), 6699 states have call successors, (6699), 1131 states have call predecessors, (6699), 1119 states have return successors, (6766), 6615 states have call predecessors, (6766), 6684 states have call successors, (6766) [2021-11-21 01:38:15,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18821 states to 18821 states and 26970 transitions. [2021-11-21 01:38:15,280 INFO L78 Accepts]: Start accepts. Automaton has 18821 states and 26970 transitions. Word has length 895 [2021-11-21 01:38:15,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:15,280 INFO L470 AbstractCegarLoop]: Abstraction has 18821 states and 26970 transitions. [2021-11-21 01:38:15,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 2 states have call successors, (117), 2 states have call predecessors, (117), 1 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2021-11-21 01:38:15,281 INFO L276 IsEmpty]: Start isEmpty. Operand 18821 states and 26970 transitions. [2021-11-21 01:38:15,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2021-11-21 01:38:15,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:15,321 INFO L514 BasicCegarLoop]: trace histogram [26, 23, 20, 13, 13, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:15,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-21 01:38:15,322 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:38:15,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:15,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1539220387, now seen corresponding path program 1 times [2021-11-21 01:38:15,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:15,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341473207] [2021-11-21 01:38:15,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:15,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:15,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2774 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2774 trivial. 0 not checked. [2021-11-21 01:38:15,971 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:15,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341473207] [2021-11-21 01:38:15,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341473207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:15,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:38:15,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:38:15,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346021159] [2021-11-21 01:38:15,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:15,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:38:15,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:15,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:38:15,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:38:15,977 INFO L87 Difference]: Start difference. First operand 18821 states and 26970 transitions. Second operand has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 2 states have call successors, (117), 2 states have call predecessors, (117), 1 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2021-11-21 01:38:23,483 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:24,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:24,795 INFO L93 Difference]: Finished difference Result 39815 states and 57865 transitions. [2021-11-21 01:38:24,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:38:24,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 2 states have call successors, (117), 2 states have call predecessors, (117), 1 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) Word has length 900 [2021-11-21 01:38:24,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:24,906 INFO L225 Difference]: With dead ends: 39815 [2021-11-21 01:38:24,907 INFO L226 Difference]: Without dead ends: 22859 [2021-11-21 01:38:24,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:38:24,959 INFO L933 BasicCegarLoop]: 4581 mSDtfsCounter, 623 mSDsluCounter, 9448 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 185 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 13059 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1559 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:24,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [810 Valid, 13059 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1559 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2021-11-21 01:38:24,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22859 states. [2021-11-21 01:38:26,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22859 to 18833. [2021-11-21 01:38:26,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18833 states, 11011 states have (on average 1.227590591226955) internal successors, (13517), 11309 states have internal predecessors, (13517), 6699 states have call successors, (6699), 1131 states have call predecessors, (6699), 1119 states have return successors, (6766), 6615 states have call predecessors, (6766), 6684 states have call successors, (6766) [2021-11-21 01:38:26,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18833 states to 18833 states and 26982 transitions. [2021-11-21 01:38:26,535 INFO L78 Accepts]: Start accepts. Automaton has 18833 states and 26982 transitions. Word has length 900 [2021-11-21 01:38:26,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:26,536 INFO L470 AbstractCegarLoop]: Abstraction has 18833 states and 26982 transitions. [2021-11-21 01:38:26,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 2 states have call successors, (117), 2 states have call predecessors, (117), 1 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2021-11-21 01:38:26,536 INFO L276 IsEmpty]: Start isEmpty. Operand 18833 states and 26982 transitions. [2021-11-21 01:38:26,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2021-11-21 01:38:26,572 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:26,573 INFO L514 BasicCegarLoop]: trace histogram [26, 23, 20, 13, 13, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:26,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-21 01:38:26,573 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:38:26,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:26,574 INFO L85 PathProgramCache]: Analyzing trace with hash -2045294011, now seen corresponding path program 1 times [2021-11-21 01:38:26,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:26,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211376570] [2021-11-21 01:38:26,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:26,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:27,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2778 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2772 trivial. 0 not checked. [2021-11-21 01:38:27,119 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:27,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211376570] [2021-11-21 01:38:27,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211376570] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:38:27,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907766833] [2021-11-21 01:38:27,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:27,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:27,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:38:27,127 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:38:27,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:38:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:28,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 7036 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:38:29,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:31,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2778 backedges. 839 proven. 0 refuted. 0 times theorem prover too weak. 1939 trivial. 0 not checked. [2021-11-21 01:38:31,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:38:31,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907766833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:31,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:38:31,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-11-21 01:38:31,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44720395] [2021-11-21 01:38:31,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:31,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:38:31,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:31,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:38:31,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:38:31,050 INFO L87 Difference]: Start difference. First operand 18833 states and 26982 transitions. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 2 states have call successors, (129), 2 states have call predecessors, (129), 2 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2021-11-21 01:38:33,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:36,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:37,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:37,712 INFO L93 Difference]: Finished difference Result 37757 states and 54562 transitions. [2021-11-21 01:38:37,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:38:37,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 2 states have call successors, (129), 2 states have call predecessors, (129), 2 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) Word has length 925 [2021-11-21 01:38:37,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:37,784 INFO L225 Difference]: With dead ends: 37757 [2021-11-21 01:38:37,784 INFO L226 Difference]: Without dead ends: 18938 [2021-11-21 01:38:37,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 927 GetRequests, 925 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:38:37,833 INFO L933 BasicCegarLoop]: 3830 mSDtfsCounter, 10 mSDsluCounter, 4255 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 7653 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:37,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 7653 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 869 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-11-21 01:38:37,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18938 states. [2021-11-21 01:38:39,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18938 to 18840. [2021-11-21 01:38:39,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18840 states, 11018 states have (on average 1.227445997458704) internal successors, (13524), 11316 states have internal predecessors, (13524), 6699 states have call successors, (6699), 1131 states have call predecessors, (6699), 1119 states have return successors, (6766), 6615 states have call predecessors, (6766), 6684 states have call successors, (6766) [2021-11-21 01:38:39,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18840 states to 18840 states and 26989 transitions. [2021-11-21 01:38:39,119 INFO L78 Accepts]: Start accepts. Automaton has 18840 states and 26989 transitions. Word has length 925 [2021-11-21 01:38:39,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:39,120 INFO L470 AbstractCegarLoop]: Abstraction has 18840 states and 26989 transitions. [2021-11-21 01:38:39,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 2 states have call successors, (129), 2 states have call predecessors, (129), 2 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2021-11-21 01:38:39,120 INFO L276 IsEmpty]: Start isEmpty. Operand 18840 states and 26989 transitions. [2021-11-21 01:38:39,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2021-11-21 01:38:39,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:39,167 INFO L514 BasicCegarLoop]: trace histogram [29, 26, 20, 13, 13, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:39,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:38:39,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-21 01:38:39,396 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:38:39,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:39,397 INFO L85 PathProgramCache]: Analyzing trace with hash 592762589, now seen corresponding path program 1 times [2021-11-21 01:38:39,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:39,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620894152] [2021-11-21 01:38:39,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:39,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:40,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3102 trivial. 0 not checked. [2021-11-21 01:38:40,237 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:40,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620894152] [2021-11-21 01:38:40,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620894152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:40,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:38:40,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:38:40,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532942643] [2021-11-21 01:38:40,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:40,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:38:40,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:40,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:38:40,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:38:40,241 INFO L87 Difference]: Start difference. First operand 18840 states and 26989 transitions. Second operand has 5 states, 5 states have (on average 55.8) internal successors, (279), 4 states have internal predecessors, (279), 2 states have call successors, (126), 2 states have call predecessors, (126), 1 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2021-11-21 01:38:43,487 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:44,567 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:47,198 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:48,228 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:50,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:52,643 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:55,677 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:56,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:56,281 INFO L93 Difference]: Finished difference Result 24253 states and 34799 transitions. [2021-11-21 01:38:56,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:38:56,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 55.8) internal successors, (279), 4 states have internal predecessors, (279), 2 states have call successors, (126), 2 states have call predecessors, (126), 1 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) Word has length 955 [2021-11-21 01:38:56,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:56,382 INFO L225 Difference]: With dead ends: 24253 [2021-11-21 01:38:56,382 INFO L226 Difference]: Without dead ends: 24251 [2021-11-21 01:38:56,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:38:56,396 INFO L933 BasicCegarLoop]: 4818 mSDtfsCounter, 3839 mSDsluCounter, 14723 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3840 SdHoareTripleChecker+Valid, 18244 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:56,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3840 Valid, 18244 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1740 Invalid, 3 Unknown, 0 Unchecked, 15.1s Time] [2021-11-21 01:38:56,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24251 states. [2021-11-21 01:38:57,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24251 to 24192. [2021-11-21 01:38:57,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24192 states, 14166 states have (on average 1.2285048708174502) internal successors, (17403), 14558 states have internal predecessors, (17403), 8598 states have call successors, (8598), 1439 states have call predecessors, (8598), 1424 states have return successors, (8706), 8483 states have call predecessors, (8706), 8583 states have call successors, (8706) [2021-11-21 01:38:57,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24192 states to 24192 states and 34707 transitions. [2021-11-21 01:38:57,857 INFO L78 Accepts]: Start accepts. Automaton has 24192 states and 34707 transitions. Word has length 955 [2021-11-21 01:38:57,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:57,858 INFO L470 AbstractCegarLoop]: Abstraction has 24192 states and 34707 transitions. [2021-11-21 01:38:57,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.8) internal successors, (279), 4 states have internal predecessors, (279), 2 states have call successors, (126), 2 states have call predecessors, (126), 1 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2021-11-21 01:38:57,858 INFO L276 IsEmpty]: Start isEmpty. Operand 24192 states and 34707 transitions. [2021-11-21 01:38:57,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2021-11-21 01:38:57,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:57,883 INFO L514 BasicCegarLoop]: trace histogram [29, 26, 20, 13, 13, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:57,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-21 01:38:57,884 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:38:57,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:57,885 INFO L85 PathProgramCache]: Analyzing trace with hash 680628377, now seen corresponding path program 1 times [2021-11-21 01:38:57,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:57,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581038227] [2021-11-21 01:38:57,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:57,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3136 trivial. 0 not checked. [2021-11-21 01:38:58,791 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:58,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581038227] [2021-11-21 01:38:58,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581038227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:58,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:38:58,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 01:38:58,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693787387] [2021-11-21 01:38:58,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:58,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:38:58,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:58,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:38:58,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:38:58,795 INFO L87 Difference]: Start difference. First operand 24192 states and 34707 transitions. Second operand has 6 states, 6 states have (on average 47.833333333333336) internal successors, (287), 5 states have internal predecessors, (287), 3 states have call successors, (126), 4 states have call predecessors, (126), 2 states have return successors, (124), 3 states have call predecessors, (124), 3 states have call successors, (124) [2021-11-21 01:39:03,852 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:05,882 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:14,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:17,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:39:17,950 INFO L93 Difference]: Finished difference Result 24636 states and 35408 transitions. [2021-11-21 01:39:17,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:39:17,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 47.833333333333336) internal successors, (287), 5 states have internal predecessors, (287), 3 states have call successors, (126), 4 states have call predecessors, (126), 2 states have return successors, (124), 3 states have call predecessors, (124), 3 states have call successors, (124) Word has length 977 [2021-11-21 01:39:17,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:39:18,067 INFO L225 Difference]: With dead ends: 24636 [2021-11-21 01:39:18,067 INFO L226 Difference]: Without dead ends: 24634 [2021-11-21 01:39:18,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:39:18,079 INFO L933 BasicCegarLoop]: 2788 mSDtfsCounter, 3811 mSDsluCounter, 5663 mSDsCounter, 0 mSdLazyCounter, 6922 mSolverCounterSat, 2897 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4261 SdHoareTripleChecker+Valid, 7799 SdHoareTripleChecker+Invalid, 9822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2897 IncrementalHoareTripleChecker+Valid, 6922 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:39:18,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4261 Valid, 7799 Invalid, 9822 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2897 Valid, 6922 Invalid, 3 Unknown, 0 Unchecked, 18.1s Time] [2021-11-21 01:39:18,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24634 states. [2021-11-21 01:39:19,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24634 to 24406. [2021-11-21 01:39:19,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24406 states, 14303 states have (on average 1.229252604348738) internal successors, (17582), 14703 states have internal predecessors, (17582), 8673 states have call successors, (8673), 1439 states have call predecessors, (8673), 1427 states have return successors, (8787), 8558 states have call predecessors, (8787), 8658 states have call successors, (8787) [2021-11-21 01:39:19,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24406 states to 24406 states and 35042 transitions. [2021-11-21 01:39:19,589 INFO L78 Accepts]: Start accepts. Automaton has 24406 states and 35042 transitions. Word has length 977 [2021-11-21 01:39:19,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:39:19,590 INFO L470 AbstractCegarLoop]: Abstraction has 24406 states and 35042 transitions. [2021-11-21 01:39:19,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.833333333333336) internal successors, (287), 5 states have internal predecessors, (287), 3 states have call successors, (126), 4 states have call predecessors, (126), 2 states have return successors, (124), 3 states have call predecessors, (124), 3 states have call successors, (124) [2021-11-21 01:39:19,590 INFO L276 IsEmpty]: Start isEmpty. Operand 24406 states and 35042 transitions. [2021-11-21 01:39:19,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2021-11-21 01:39:19,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:39:19,609 INFO L514 BasicCegarLoop]: trace histogram [31, 26, 20, 14, 14, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:39:19,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-21 01:39:19,610 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:39:19,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:39:19,610 INFO L85 PathProgramCache]: Analyzing trace with hash -116734510, now seen corresponding path program 1 times [2021-11-21 01:39:19,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:39:19,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628365798] [2021-11-21 01:39:19,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:19,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:39:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:39:20,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3275 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 3217 trivial. 0 not checked. [2021-11-21 01:39:20,284 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:39:20,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628365798] [2021-11-21 01:39:20,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628365798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:39:20,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:39:20,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 01:39:20,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269527921] [2021-11-21 01:39:20,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:39:20,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:39:20,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:39:20,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:39:20,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:39:20,288 INFO L87 Difference]: Start difference. First operand 24406 states and 35042 transitions. Second operand has 8 states, 6 states have (on average 49.333333333333336) internal successors, (296), 6 states have internal predecessors, (296), 3 states have call successors, (134), 2 states have call predecessors, (134), 2 states have return successors, (132), 3 states have call predecessors, (132), 2 states have call successors, (132) [2021-11-21 01:39:24,355 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:31,630 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:33,694 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:35,753 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:36,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:41,046 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:52,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:39:52,682 INFO L93 Difference]: Finished difference Result 62531 states and 91945 transitions. [2021-11-21 01:39:52,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:39:52,683 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 49.333333333333336) internal successors, (296), 6 states have internal predecessors, (296), 3 states have call successors, (134), 2 states have call predecessors, (134), 2 states have return successors, (132), 3 states have call predecessors, (132), 2 states have call successors, (132) Word has length 991 [2021-11-21 01:39:52,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:39:52,821 INFO L225 Difference]: With dead ends: 62531 [2021-11-21 01:39:52,822 INFO L226 Difference]: Without dead ends: 39991 [2021-11-21 01:39:52,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:39:52,882 INFO L933 BasicCegarLoop]: 7159 mSDtfsCounter, 2792 mSDsluCounter, 40537 mSDsCounter, 0 mSdLazyCounter, 8532 mSolverCounterSat, 1884 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3169 SdHoareTripleChecker+Valid, 43435 SdHoareTripleChecker+Invalid, 10421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1884 IncrementalHoareTripleChecker+Valid, 8532 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:39:52,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3169 Valid, 43435 Invalid, 10421 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1884 Valid, 8532 Invalid, 5 Unknown, 0 Unchecked, 30.3s Time] [2021-11-21 01:39:52,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39991 states. [2021-11-21 01:39:55,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39991 to 24415. [2021-11-21 01:39:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24415 states, 14309 states have (on average 1.2291564749458384) internal successors, (17588), 14706 states have internal predecessors, (17588), 8676 states have call successors, (8676), 1439 states have call predecessors, (8676), 1427 states have return successors, (8790), 8561 states have call predecessors, (8790), 8661 states have call successors, (8790) [2021-11-21 01:39:55,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24415 states to 24415 states and 35054 transitions. [2021-11-21 01:39:55,736 INFO L78 Accepts]: Start accepts. Automaton has 24415 states and 35054 transitions. Word has length 991 [2021-11-21 01:39:55,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:39:55,737 INFO L470 AbstractCegarLoop]: Abstraction has 24415 states and 35054 transitions. [2021-11-21 01:39:55,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 49.333333333333336) internal successors, (296), 6 states have internal predecessors, (296), 3 states have call successors, (134), 2 states have call predecessors, (134), 2 states have return successors, (132), 3 states have call predecessors, (132), 2 states have call successors, (132) [2021-11-21 01:39:55,738 INFO L276 IsEmpty]: Start isEmpty. Operand 24415 states and 35054 transitions. [2021-11-21 01:39:55,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2021-11-21 01:39:55,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:39:55,764 INFO L514 BasicCegarLoop]: trace histogram [31, 26, 20, 14, 14, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:39:55,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-21 01:39:55,765 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:39:55,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:39:55,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1163103550, now seen corresponding path program 1 times [2021-11-21 01:39:55,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:39:55,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876218839] [2021-11-21 01:39:55,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:55,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:39:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:39:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3275 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3275 trivial. 0 not checked. [2021-11-21 01:39:56,757 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:39:56,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876218839] [2021-11-21 01:39:56,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876218839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:39:56,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:39:56,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:39:56,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846224474] [2021-11-21 01:39:56,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:39:56,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:39:56,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:39:56,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:39:56,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:39:56,760 INFO L87 Difference]: Start difference. First operand 24415 states and 35054 transitions. Second operand has 5 states, 5 states have (on average 59.2) internal successors, (296), 4 states have internal predecessors, (296), 2 states have call successors, (135), 2 states have call predecessors, (135), 2 states have return successors, (133), 3 states have call predecessors, (133), 2 states have call successors, (133) [2021-11-21 01:40:04,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:06,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:06,408 INFO L93 Difference]: Finished difference Result 48842 states and 70584 transitions. [2021-11-21 01:40:06,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:40:06,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.2) internal successors, (296), 4 states have internal predecessors, (296), 2 states have call successors, (135), 2 states have call predecessors, (135), 2 states have return successors, (133), 3 states have call predecessors, (133), 2 states have call successors, (133) Word has length 994 [2021-11-21 01:40:06,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:06,504 INFO L225 Difference]: With dead ends: 48842 [2021-11-21 01:40:06,505 INFO L226 Difference]: Without dead ends: 26293 [2021-11-21 01:40:06,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:40:06,563 INFO L933 BasicCegarLoop]: 4147 mSDtfsCounter, 198 mSDsluCounter, 13589 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 16337 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:06,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 16337 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1919 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-11-21 01:40:06,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26293 states. [2021-11-21 01:40:08,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26293 to 24447. [2021-11-21 01:40:08,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24447 states, 14333 states have (on average 1.2287727621572595) internal successors, (17612), 14730 states have internal predecessors, (17612), 8676 states have call successors, (8676), 1439 states have call predecessors, (8676), 1435 states have return successors, (8835), 8569 states have call predecessors, (8835), 8661 states have call successors, (8835) [2021-11-21 01:40:08,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24447 states to 24447 states and 35123 transitions. [2021-11-21 01:40:08,442 INFO L78 Accepts]: Start accepts. Automaton has 24447 states and 35123 transitions. Word has length 994 [2021-11-21 01:40:08,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:08,444 INFO L470 AbstractCegarLoop]: Abstraction has 24447 states and 35123 transitions. [2021-11-21 01:40:08,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.2) internal successors, (296), 4 states have internal predecessors, (296), 2 states have call successors, (135), 2 states have call predecessors, (135), 2 states have return successors, (133), 3 states have call predecessors, (133), 2 states have call successors, (133) [2021-11-21 01:40:08,444 INFO L276 IsEmpty]: Start isEmpty. Operand 24447 states and 35123 transitions. [2021-11-21 01:40:08,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1029 [2021-11-21 01:40:08,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:08,473 INFO L514 BasicCegarLoop]: trace histogram [33, 28, 23, 14, 14, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:40:08,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-21 01:40:08,474 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:40:08,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:08,475 INFO L85 PathProgramCache]: Analyzing trace with hash -289576652, now seen corresponding path program 1 times [2021-11-21 01:40:08,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:40:08,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783787117] [2021-11-21 01:40:08,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:08,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:40:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:09,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3633 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3633 trivial. 0 not checked. [2021-11-21 01:40:09,485 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:40:09,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783787117] [2021-11-21 01:40:09,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783787117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:09,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:09,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:40:09,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765621024] [2021-11-21 01:40:09,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:09,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:40:09,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:40:09,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:40:09,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:40:09,488 INFO L87 Difference]: Start difference. First operand 24447 states and 35123 transitions. Second operand has 5 states, 5 states have (on average 61.8) internal successors, (309), 4 states have internal predecessors, (309), 2 states have call successors, (142), 2 states have call predecessors, (142), 2 states have return successors, (140), 3 states have call predecessors, (140), 2 states have call successors, (140) [2021-11-21 01:40:17,634 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:19,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:19,209 INFO L93 Difference]: Finished difference Result 48906 states and 70688 transitions. [2021-11-21 01:40:19,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:40:19,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 61.8) internal successors, (309), 4 states have internal predecessors, (309), 2 states have call successors, (142), 2 states have call predecessors, (142), 2 states have return successors, (140), 3 states have call predecessors, (140), 2 states have call successors, (140) Word has length 1028 [2021-11-21 01:40:19,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:19,304 INFO L225 Difference]: With dead ends: 48906 [2021-11-21 01:40:19,305 INFO L226 Difference]: Without dead ends: 26325 [2021-11-21 01:40:19,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:40:19,359 INFO L933 BasicCegarLoop]: 4145 mSDtfsCounter, 198 mSDsluCounter, 13577 mSDsCounter, 0 mSdLazyCounter, 1911 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 16330 SdHoareTripleChecker+Invalid, 1919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1911 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:19,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 16330 Invalid, 1919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1911 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-11-21 01:40:19,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26325 states. [2021-11-21 01:40:20,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26325 to 24479. [2021-11-21 01:40:20,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24479 states, 14357 states have (on average 1.228390332242112) internal successors, (17636), 14754 states have internal predecessors, (17636), 8676 states have call successors, (8676), 1439 states have call predecessors, (8676), 1443 states have return successors, (8851), 8577 states have call predecessors, (8851), 8661 states have call successors, (8851) [2021-11-21 01:40:21,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24479 states to 24479 states and 35163 transitions. [2021-11-21 01:40:21,050 INFO L78 Accepts]: Start accepts. Automaton has 24479 states and 35163 transitions. Word has length 1028 [2021-11-21 01:40:21,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:21,055 INFO L470 AbstractCegarLoop]: Abstraction has 24479 states and 35163 transitions. [2021-11-21 01:40:21,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.8) internal successors, (309), 4 states have internal predecessors, (309), 2 states have call successors, (142), 2 states have call predecessors, (142), 2 states have return successors, (140), 3 states have call predecessors, (140), 2 states have call successors, (140) [2021-11-21 01:40:21,056 INFO L276 IsEmpty]: Start isEmpty. Operand 24479 states and 35163 transitions. [2021-11-21 01:40:21,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1114 [2021-11-21 01:40:21,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:21,086 INFO L514 BasicCegarLoop]: trace histogram [35, 30, 25, 14, 14, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:40:21,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-21 01:40:21,087 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:40:21,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:21,088 INFO L85 PathProgramCache]: Analyzing trace with hash -985025176, now seen corresponding path program 1 times [2021-11-21 01:40:21,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:40:21,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119080309] [2021-11-21 01:40:21,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:21,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:40:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:21,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4341 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4337 trivial. 0 not checked. [2021-11-21 01:40:21,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:40:21,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119080309] [2021-11-21 01:40:21,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119080309] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:40:21,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954216939] [2021-11-21 01:40:21,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:21,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:40:21,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:40:21,803 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:40:21,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:40:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:23,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 7911 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:40:24,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:25,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4341 backedges. 1284 proven. 0 refuted. 0 times theorem prover too weak. 3057 trivial. 0 not checked. [2021-11-21 01:40:25,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:40:25,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954216939] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:25,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:40:25,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-11-21 01:40:25,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746594127] [2021-11-21 01:40:25,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:25,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:40:25,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:40:25,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:40:25,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:40:25,980 INFO L87 Difference]: Start difference. First operand 24479 states and 35163 transitions. Second operand has 7 states, 6 states have (on average 59.833333333333336) internal successors, (359), 5 states have internal predecessors, (359), 2 states have call successors, (158), 2 states have call predecessors, (158), 4 states have return successors, (156), 4 states have call predecessors, (156), 2 states have call successors, (156) [2021-11-21 01:40:31,589 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:33,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:38,640 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:40,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:40,273 INFO L93 Difference]: Finished difference Result 49040 states and 70835 transitions. [2021-11-21 01:40:40,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:40:40,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 59.833333333333336) internal successors, (359), 5 states have internal predecessors, (359), 2 states have call successors, (158), 2 states have call predecessors, (158), 4 states have return successors, (156), 4 states have call predecessors, (156), 2 states have call successors, (156) Word has length 1113 [2021-11-21 01:40:40,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:40,470 INFO L225 Difference]: With dead ends: 49040 [2021-11-21 01:40:40,470 INFO L226 Difference]: Without dead ends: 24575 [2021-11-21 01:40:40,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1119 GetRequests, 1110 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:40:40,522 INFO L933 BasicCegarLoop]: 3833 mSDtfsCounter, 2 mSDsluCounter, 21316 mSDsCounter, 0 mSdLazyCounter, 2613 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22989 SdHoareTripleChecker+Invalid, 2615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2613 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:40,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 22989 Invalid, 2615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2613 Invalid, 2 Unknown, 0 Unchecked, 13.1s Time] [2021-11-21 01:40:40,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24575 states. [2021-11-21 01:40:42,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24575 to 24533. [2021-11-21 01:40:42,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24533 states, 14393 states have (on average 1.2278190787188217) internal successors, (17672), 14790 states have internal predecessors, (17672), 8676 states have call successors, (8676), 1439 states have call predecessors, (8676), 1461 states have return successors, (8972), 8595 states have call predecessors, (8972), 8661 states have call successors, (8972) [2021-11-21 01:40:42,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24533 states to 24533 states and 35320 transitions. [2021-11-21 01:40:42,308 INFO L78 Accepts]: Start accepts. Automaton has 24533 states and 35320 transitions. Word has length 1113 [2021-11-21 01:40:42,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:42,309 INFO L470 AbstractCegarLoop]: Abstraction has 24533 states and 35320 transitions. [2021-11-21 01:40:42,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 59.833333333333336) internal successors, (359), 5 states have internal predecessors, (359), 2 states have call successors, (158), 2 states have call predecessors, (158), 4 states have return successors, (156), 4 states have call predecessors, (156), 2 states have call successors, (156) [2021-11-21 01:40:42,310 INFO L276 IsEmpty]: Start isEmpty. Operand 24533 states and 35320 transitions. [2021-11-21 01:40:42,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1130 [2021-11-21 01:40:42,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:42,336 INFO L514 BasicCegarLoop]: trace histogram [36, 31, 25, 14, 14, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:40:42,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-21 01:40:42,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:40:42,559 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:40:42,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:42,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1634835859, now seen corresponding path program 1 times [2021-11-21 01:40:42,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:40:42,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320891367] [2021-11-21 01:40:42,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:42,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:40:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:43,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4471 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4467 trivial. 0 not checked. [2021-11-21 01:40:43,232 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:40:43,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320891367] [2021-11-21 01:40:43,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320891367] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:43,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:43,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 01:40:43,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381852959] [2021-11-21 01:40:43,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:43,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:40:43,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:40:43,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:40:43,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:40:43,236 INFO L87 Difference]: Start difference. First operand 24533 states and 35320 transitions. Second operand has 7 states, 6 states have (on average 54.833333333333336) internal successors, (329), 5 states have internal predecessors, (329), 2 states have call successors, (148), 2 states have call predecessors, (148), 4 states have return successors, (147), 4 states have call predecessors, (147), 2 states have call successors, (147) [2021-11-21 01:40:47,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:51,587 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:53,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:53,291 INFO L93 Difference]: Finished difference Result 49112 states and 71010 transitions. [2021-11-21 01:40:53,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:40:53,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 54.833333333333336) internal successors, (329), 5 states have internal predecessors, (329), 2 states have call successors, (148), 2 states have call predecessors, (148), 4 states have return successors, (147), 4 states have call predecessors, (147), 2 states have call successors, (147) Word has length 1129 [2021-11-21 01:40:53,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:53,374 INFO L225 Difference]: With dead ends: 49112 [2021-11-21 01:40:53,374 INFO L226 Difference]: Without dead ends: 24593 [2021-11-21 01:40:53,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:40:53,431 INFO L933 BasicCegarLoop]: 3835 mSDtfsCounter, 2 mSDsluCounter, 21325 mSDsCounter, 0 mSdLazyCounter, 2606 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 23005 SdHoareTripleChecker+Invalid, 2609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2606 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:53,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 23005 Invalid, 2609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2606 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2021-11-21 01:40:53,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24593 states. [2021-11-21 01:40:55,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24593 to 24551. [2021-11-21 01:40:55,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24551 states, 14411 states have (on average 1.2275345222399556) internal successors, (17690), 14799 states have internal predecessors, (17690), 8676 states have call successors, (8676), 1439 states have call predecessors, (8676), 1461 states have return successors, (8972), 8604 states have call predecessors, (8972), 8661 states have call successors, (8972) [2021-11-21 01:40:55,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24551 states to 24551 states and 35338 transitions. [2021-11-21 01:40:55,221 INFO L78 Accepts]: Start accepts. Automaton has 24551 states and 35338 transitions. Word has length 1129 [2021-11-21 01:40:55,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:55,222 INFO L470 AbstractCegarLoop]: Abstraction has 24551 states and 35338 transitions. [2021-11-21 01:40:55,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 54.833333333333336) internal successors, (329), 5 states have internal predecessors, (329), 2 states have call successors, (148), 2 states have call predecessors, (148), 4 states have return successors, (147), 4 states have call predecessors, (147), 2 states have call successors, (147) [2021-11-21 01:40:55,223 INFO L276 IsEmpty]: Start isEmpty. Operand 24551 states and 35338 transitions. [2021-11-21 01:40:55,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1146 [2021-11-21 01:40:55,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:55,252 INFO L514 BasicCegarLoop]: trace histogram [37, 32, 25, 14, 14, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:40:55,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-21 01:40:55,253 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:40:55,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:55,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1714261960, now seen corresponding path program 1 times [2021-11-21 01:40:55,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:40:55,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832567378] [2021-11-21 01:40:55,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:55,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:40:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:56,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4617 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4617 trivial. 0 not checked. [2021-11-21 01:40:56,462 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:40:56,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832567378] [2021-11-21 01:40:56,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832567378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:56,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:56,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 01:40:56,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33046916] [2021-11-21 01:40:56,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:56,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:40:56,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:40:56,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:40:56,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:40:56,466 INFO L87 Difference]: Start difference. First operand 24551 states and 35338 transitions. Second operand has 8 states, 8 states have (on average 40.75) internal successors, (326), 6 states have internal predecessors, (326), 2 states have call successors, (148), 2 states have call predecessors, (148), 3 states have return successors, (146), 4 states have call predecessors, (146), 2 states have call successors, (146) [2021-11-21 01:41:01,913 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:03,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:05,965 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:12,225 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:14,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:41:14,125 INFO L93 Difference]: Finished difference Result 51012 states and 74253 transitions. [2021-11-21 01:41:14,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:41:14,126 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.75) internal successors, (326), 6 states have internal predecessors, (326), 2 states have call successors, (148), 2 states have call predecessors, (148), 3 states have return successors, (146), 4 states have call predecessors, (146), 2 states have call successors, (146) Word has length 1145 [2021-11-21 01:41:14,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:41:14,215 INFO L225 Difference]: With dead ends: 51012 [2021-11-21 01:41:14,215 INFO L226 Difference]: Without dead ends: 26475 [2021-11-21 01:41:14,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:41:14,272 INFO L933 BasicCegarLoop]: 4147 mSDtfsCounter, 200 mSDsluCounter, 27466 mSDsCounter, 0 mSdLazyCounter, 3382 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 28773 SdHoareTripleChecker+Invalid, 3394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3382 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:41:14,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 28773 Invalid, 3394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3382 Invalid, 3 Unknown, 0 Unchecked, 16.2s Time] [2021-11-21 01:41:14,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26475 states. [2021-11-21 01:41:15,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26475 to 24587. [2021-11-21 01:41:15,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24587 states, 14438 states have (on average 1.227109017869511) internal successors, (17717), 14826 states have internal predecessors, (17717), 8676 states have call successors, (8676), 1439 states have call predecessors, (8676), 1470 states have return successors, (8990), 8613 states have call predecessors, (8990), 8661 states have call successors, (8990) [2021-11-21 01:41:15,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24587 states to 24587 states and 35383 transitions. [2021-11-21 01:41:15,980 INFO L78 Accepts]: Start accepts. Automaton has 24587 states and 35383 transitions. Word has length 1145 [2021-11-21 01:41:15,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:41:15,981 INFO L470 AbstractCegarLoop]: Abstraction has 24587 states and 35383 transitions. [2021-11-21 01:41:15,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.75) internal successors, (326), 6 states have internal predecessors, (326), 2 states have call successors, (148), 2 states have call predecessors, (148), 3 states have return successors, (146), 4 states have call predecessors, (146), 2 states have call successors, (146) [2021-11-21 01:41:15,981 INFO L276 IsEmpty]: Start isEmpty. Operand 24587 states and 35383 transitions. [2021-11-21 01:41:16,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1184 [2021-11-21 01:41:16,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:16,133 INFO L514 BasicCegarLoop]: trace histogram [38, 33, 26, 14, 14, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:41:16,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-21 01:41:16,133 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:41:16,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:16,134 INFO L85 PathProgramCache]: Analyzing trace with hash 741309304, now seen corresponding path program 1 times [2021-11-21 01:41:16,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:41:16,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471074619] [2021-11-21 01:41:16,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:16,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:41:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:16,803 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5073 trivial. 0 not checked. [2021-11-21 01:41:16,804 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:41:16,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471074619] [2021-11-21 01:41:16,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471074619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:41:16,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:41:16,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:41:16,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711652521] [2021-11-21 01:41:16,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:41:16,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:41:16,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:41:16,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:41:16,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:41:16,808 INFO L87 Difference]: Start difference. First operand 24587 states and 35383 transitions. Second operand has 5 states, 5 states have (on average 65.4) internal successors, (327), 4 states have internal predecessors, (327), 2 states have call successors, (149), 2 states have call predecessors, (149), 2 states have return successors, (147), 3 states have call predecessors, (147), 2 states have call successors, (147) [2021-11-21 01:41:21,200 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:25,043 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:26,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:41:26,509 INFO L93 Difference]: Finished difference Result 49105 states and 71081 transitions. [2021-11-21 01:41:26,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:41:26,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 65.4) internal successors, (327), 4 states have internal predecessors, (327), 2 states have call successors, (149), 2 states have call predecessors, (149), 2 states have return successors, (147), 3 states have call predecessors, (147), 2 states have call successors, (147) Word has length 1183 [2021-11-21 01:41:26,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:41:26,719 INFO L225 Difference]: With dead ends: 49105 [2021-11-21 01:41:26,719 INFO L226 Difference]: Without dead ends: 26396 [2021-11-21 01:41:26,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:41:26,772 INFO L933 BasicCegarLoop]: 4027 mSDtfsCounter, 198 mSDsluCounter, 13244 mSDsCounter, 0 mSdLazyCounter, 1839 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 15923 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1839 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:41:26,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 15923 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1839 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2021-11-21 01:41:26,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26396 states. [2021-11-21 01:41:28,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26396 to 24587. [2021-11-21 01:41:28,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24587 states, 14438 states have (on average 1.227109017869511) internal successors, (17717), 14826 states have internal predecessors, (17717), 8676 states have call successors, (8676), 1439 states have call predecessors, (8676), 1470 states have return successors, (8990), 8613 states have call predecessors, (8990), 8661 states have call successors, (8990) [2021-11-21 01:41:28,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24587 states to 24587 states and 35383 transitions. [2021-11-21 01:41:28,608 INFO L78 Accepts]: Start accepts. Automaton has 24587 states and 35383 transitions. Word has length 1183 [2021-11-21 01:41:28,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:41:28,609 INFO L470 AbstractCegarLoop]: Abstraction has 24587 states and 35383 transitions. [2021-11-21 01:41:28,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.4) internal successors, (327), 4 states have internal predecessors, (327), 2 states have call successors, (149), 2 states have call predecessors, (149), 2 states have return successors, (147), 3 states have call predecessors, (147), 2 states have call successors, (147) [2021-11-21 01:41:28,609 INFO L276 IsEmpty]: Start isEmpty. Operand 24587 states and 35383 transitions. [2021-11-21 01:41:28,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1140 [2021-11-21 01:41:28,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:28,629 INFO L514 BasicCegarLoop]: trace histogram [37, 32, 25, 14, 14, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:41:28,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-21 01:41:28,629 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:41:28,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:28,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1984316499, now seen corresponding path program 1 times [2021-11-21 01:41:28,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:41:28,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174571514] [2021-11-21 01:41:28,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:28,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:41:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:29,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4617 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4617 trivial. 0 not checked. [2021-11-21 01:41:29,685 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:41:29,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174571514] [2021-11-21 01:41:29,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174571514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:41:29,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:41:29,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:41:29,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564292031] [2021-11-21 01:41:29,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:41:29,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:41:29,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:41:29,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:41:29,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:41:29,690 INFO L87 Difference]: Start difference. First operand 24587 states and 35383 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (145), 2 states have call predecessors, (145), 2 states have call successors, (145) [2021-11-21 01:41:34,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:37,814 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:39,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:41:39,633 INFO L93 Difference]: Finished difference Result 52809 states and 76682 transitions. [2021-11-21 01:41:39,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:41:39,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (145), 2 states have call predecessors, (145), 2 states have call successors, (145) Word has length 1139 [2021-11-21 01:41:39,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:41:39,742 INFO L225 Difference]: With dead ends: 52809 [2021-11-21 01:41:39,742 INFO L226 Difference]: Without dead ends: 28236 [2021-11-21 01:41:39,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:41:39,817 INFO L933 BasicCegarLoop]: 4237 mSDtfsCounter, 590 mSDsluCounter, 8970 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 178 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 12294 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:41:39,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 12294 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1420 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-11-21 01:41:39,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28236 states. [2021-11-21 01:41:41,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28236 to 24605. [2021-11-21 01:41:41,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24605 states, 14456 states have (on average 1.2268262313226341) internal successors, (17735), 14844 states have internal predecessors, (17735), 8676 states have call successors, (8676), 1439 states have call predecessors, (8676), 1470 states have return successors, (8990), 8613 states have call predecessors, (8990), 8661 states have call successors, (8990) [2021-11-21 01:41:42,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24605 states to 24605 states and 35401 transitions. [2021-11-21 01:41:42,114 INFO L78 Accepts]: Start accepts. Automaton has 24605 states and 35401 transitions. Word has length 1139 [2021-11-21 01:41:42,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:41:42,114 INFO L470 AbstractCegarLoop]: Abstraction has 24605 states and 35401 transitions. [2021-11-21 01:41:42,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (145), 2 states have call predecessors, (145), 2 states have call successors, (145) [2021-11-21 01:41:42,115 INFO L276 IsEmpty]: Start isEmpty. Operand 24605 states and 35401 transitions. [2021-11-21 01:41:42,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1157 [2021-11-21 01:41:42,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:42,146 INFO L514 BasicCegarLoop]: trace histogram [37, 32, 25, 16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:41:42,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-21 01:41:42,147 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:41:42,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:42,148 INFO L85 PathProgramCache]: Analyzing trace with hash 585692377, now seen corresponding path program 1 times [2021-11-21 01:41:42,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:41:42,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189823852] [2021-11-21 01:41:42,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:42,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:41:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:44,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4742 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4740 trivial. 0 not checked. [2021-11-21 01:41:44,013 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:41:44,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189823852] [2021-11-21 01:41:44,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189823852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:41:44,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:41:44,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:41:44,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791628547] [2021-11-21 01:41:44,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:41:44,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:41:44,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:41:44,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:41:44,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:41:44,017 INFO L87 Difference]: Start difference. First operand 24605 states and 35401 transitions. Second operand has 5 states, 5 states have (on average 65.0) internal successors, (325), 4 states have internal predecessors, (325), 2 states have call successors, (148), 2 states have call predecessors, (148), 2 states have return successors, (146), 3 states have call predecessors, (146), 2 states have call successors, (146) [2021-11-21 01:41:48,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:50,066 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:52,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:56,066 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:57,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:41:57,837 INFO L93 Difference]: Finished difference Result 47401 states and 68323 transitions. [2021-11-21 01:41:57,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:41:57,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 65.0) internal successors, (325), 4 states have internal predecessors, (325), 2 states have call successors, (148), 2 states have call predecessors, (148), 2 states have return successors, (146), 3 states have call predecessors, (146), 2 states have call successors, (146) Word has length 1156 [2021-11-21 01:41:57,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:41:57,929 INFO L225 Difference]: With dead ends: 47401 [2021-11-21 01:41:57,929 INFO L226 Difference]: Without dead ends: 24641 [2021-11-21 01:41:57,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:41:57,992 INFO L933 BasicCegarLoop]: 3823 mSDtfsCounter, 0 mSDsluCounter, 12760 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15290 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:41:57,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15290 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1736 Invalid, 2 Unknown, 0 Unchecked, 12.2s Time] [2021-11-21 01:41:58,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24641 states. [2021-11-21 01:41:59,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24641 to 24641. [2021-11-21 01:41:59,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24641 states, 14483 states have (on average 1.2264033694676517) internal successors, (17762), 14871 states have internal predecessors, (17762), 8676 states have call successors, (8676), 1439 states have call predecessors, (8676), 1479 states have return successors, (9052), 8622 states have call predecessors, (9052), 8661 states have call successors, (9052) [2021-11-21 01:41:59,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24641 states to 24641 states and 35490 transitions. [2021-11-21 01:41:59,784 INFO L78 Accepts]: Start accepts. Automaton has 24641 states and 35490 transitions. Word has length 1156 [2021-11-21 01:41:59,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:41:59,785 INFO L470 AbstractCegarLoop]: Abstraction has 24641 states and 35490 transitions. [2021-11-21 01:41:59,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.0) internal successors, (325), 4 states have internal predecessors, (325), 2 states have call successors, (148), 2 states have call predecessors, (148), 2 states have return successors, (146), 3 states have call predecessors, (146), 2 states have call successors, (146) [2021-11-21 01:41:59,785 INFO L276 IsEmpty]: Start isEmpty. Operand 24641 states and 35490 transitions. [2021-11-21 01:41:59,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1170 [2021-11-21 01:41:59,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:59,810 INFO L514 BasicCegarLoop]: trace histogram [37, 32, 25, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:41:59,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-21 01:41:59,810 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:41:59,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:59,811 INFO L85 PathProgramCache]: Analyzing trace with hash -292920995, now seen corresponding path program 1 times [2021-11-21 01:41:59,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:41:59,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137962840] [2021-11-21 01:41:59,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:59,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:42:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:01,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4853 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 4700 trivial. 0 not checked. [2021-11-21 01:42:01,256 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:42:01,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137962840] [2021-11-21 01:42:01,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137962840] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:42:01,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288678159] [2021-11-21 01:42:01,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:01,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:42:01,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:42:01,264 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:42:01,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:42:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:03,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 8129 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-21 01:42:03,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:42:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4853 backedges. 779 proven. 29 refuted. 0 times theorem prover too weak. 4045 trivial. 0 not checked. [2021-11-21 01:42:05,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:42:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4853 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 4825 trivial. 0 not checked. [2021-11-21 01:42:08,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288678159] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 01:42:08,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:42:08,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 10] total 21 [2021-11-21 01:42:08,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491406381] [2021-11-21 01:42:08,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:42:08,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:42:08,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:42:08,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:42:08,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-11-21 01:42:08,909 INFO L87 Difference]: Start difference. First operand 24641 states and 35490 transitions. Second operand has 9 states, 8 states have (on average 41.125) internal successors, (329), 6 states have internal predecessors, (329), 2 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (150), 5 states have call predecessors, (150), 2 states have call successors, (150) [2021-11-21 01:42:14,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:15,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:18,164 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:24,883 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:26,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:26,938 INFO L93 Difference]: Finished difference Result 49272 states and 71442 transitions. [2021-11-21 01:42:26,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:42:26,939 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 41.125) internal successors, (329), 6 states have internal predecessors, (329), 2 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (150), 5 states have call predecessors, (150), 2 states have call successors, (150) Word has length 1169 [2021-11-21 01:42:26,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:27,033 INFO L225 Difference]: With dead ends: 49272 [2021-11-21 01:42:27,033 INFO L226 Difference]: Without dead ends: 26515 [2021-11-21 01:42:27,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2342 GetRequests, 2323 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-11-21 01:42:27,092 INFO L933 BasicCegarLoop]: 4029 mSDtfsCounter, 198 mSDsluCounter, 31223 mSDsCounter, 0 mSdLazyCounter, 3724 mSolverCounterSat, 14 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 32048 SdHoareTripleChecker+Invalid, 3740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3724 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:27,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 32048 Invalid, 3740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3724 Invalid, 2 Unknown, 0 Unchecked, 16.6s Time] [2021-11-21 01:42:27,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26515 states. [2021-11-21 01:42:29,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26515 to 24681. [2021-11-21 01:42:29,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24681 states, 14507 states have (on average 1.2260288136761563) internal successors, (17786), 14895 states have internal predecessors, (17786), 8676 states have call successors, (8676), 1439 states have call predecessors, (8676), 1495 states have return successors, (9140), 8638 states have call predecessors, (9140), 8661 states have call successors, (9140) [2021-11-21 01:42:29,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24681 states to 24681 states and 35602 transitions. [2021-11-21 01:42:29,130 INFO L78 Accepts]: Start accepts. Automaton has 24681 states and 35602 transitions. Word has length 1169 [2021-11-21 01:42:29,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:42:29,131 INFO L470 AbstractCegarLoop]: Abstraction has 24681 states and 35602 transitions. [2021-11-21 01:42:29,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 41.125) internal successors, (329), 6 states have internal predecessors, (329), 2 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (150), 5 states have call predecessors, (150), 2 states have call successors, (150) [2021-11-21 01:42:29,131 INFO L276 IsEmpty]: Start isEmpty. Operand 24681 states and 35602 transitions. [2021-11-21 01:42:29,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1182 [2021-11-21 01:42:29,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:42:29,153 INFO L514 BasicCegarLoop]: trace histogram [37, 32, 25, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:42:29,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:42:29,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-21 01:42:29,354 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:42:29,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:42:29,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1442388755, now seen corresponding path program 1 times [2021-11-21 01:42:29,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:42:29,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824709291] [2021-11-21 01:42:29,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:29,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:42:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:31,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4875 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 4722 trivial. 0 not checked. [2021-11-21 01:42:31,451 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:42:31,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824709291] [2021-11-21 01:42:31,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824709291] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:42:31,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430414919] [2021-11-21 01:42:31,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:31,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:42:31,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:42:31,459 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:42:31,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:42:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:33,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 8169 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-21 01:42:33,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:42:35,564 INFO L134 CoverageAnalysis]: Checked inductivity of 4875 backedges. 1587 proven. 0 refuted. 0 times theorem prover too weak. 3288 trivial. 0 not checked. [2021-11-21 01:42:35,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:42:35,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430414919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:42:35,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:42:35,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2021-11-21 01:42:35,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019213515] [2021-11-21 01:42:35,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:42:35,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:42:35,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:42:35,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:42:35,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:42:35,568 INFO L87 Difference]: Start difference. First operand 24681 states and 35602 transitions. Second operand has 6 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 3 states have call successors, (162), 2 states have call predecessors, (162), 3 states have return successors, (160), 4 states have call predecessors, (160), 3 states have call successors, (160) [2021-11-21 01:42:39,738 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:43,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:45,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:45,180 INFO L93 Difference]: Finished difference Result 49598 states and 72559 transitions. [2021-11-21 01:42:45,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:42:45,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 3 states have call successors, (162), 2 states have call predecessors, (162), 3 states have return successors, (160), 4 states have call predecessors, (160), 3 states have call successors, (160) Word has length 1181 [2021-11-21 01:42:45,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:45,271 INFO L225 Difference]: With dead ends: 49598 [2021-11-21 01:42:45,271 INFO L226 Difference]: Without dead ends: 24931 [2021-11-21 01:42:45,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1187 GetRequests, 1180 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:42:45,338 INFO L933 BasicCegarLoop]: 3830 mSDtfsCounter, 8 mSDsluCounter, 17024 mSDsCounter, 0 mSdLazyCounter, 2172 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 19138 SdHoareTripleChecker+Invalid, 2175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2172 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:45,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 19138 Invalid, 2175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2172 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time] [2021-11-21 01:42:45,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24931 states. [2021-11-21 01:42:47,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24931 to 24877. [2021-11-21 01:42:47,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24877 states, 14633 states have (on average 1.2259960363561813) internal successors, (17940), 15021 states have internal predecessors, (17940), 8732 states have call successors, (8732), 1439 states have call predecessors, (8732), 1509 states have return successors, (9252), 8708 states have call predecessors, (9252), 8717 states have call successors, (9252) [2021-11-21 01:42:47,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24877 states to 24877 states and 35924 transitions. [2021-11-21 01:42:47,237 INFO L78 Accepts]: Start accepts. Automaton has 24877 states and 35924 transitions. Word has length 1181 [2021-11-21 01:42:47,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:42:47,238 INFO L470 AbstractCegarLoop]: Abstraction has 24877 states and 35924 transitions. [2021-11-21 01:42:47,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 3 states have call successors, (162), 2 states have call predecessors, (162), 3 states have return successors, (160), 4 states have call predecessors, (160), 3 states have call successors, (160) [2021-11-21 01:42:47,238 INFO L276 IsEmpty]: Start isEmpty. Operand 24877 states and 35924 transitions. [2021-11-21 01:42:47,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1212 [2021-11-21 01:42:47,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:42:47,261 INFO L514 BasicCegarLoop]: trace histogram [37, 32, 25, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:42:47,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:42:47,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-21 01:42:47,462 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 01:42:47,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:42:47,463 INFO L85 PathProgramCache]: Analyzing trace with hash 240652391, now seen corresponding path program 1 times [2021-11-21 01:42:47,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:42:47,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693367215] [2021-11-21 01:42:47,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:47,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:42:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 5034 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2021-11-21 01:42:48,020 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:42:48,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693367215] [2021-11-21 01:42:48,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693367215] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:42:48,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218438362] [2021-11-21 01:42:48,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:48,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:42:48,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:42:48,022 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:42:48,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b07269f-a034-4252-815e-5b150a07275a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:42:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:50,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 8223 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:42:50,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:42:52,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5034 backedges. 1614 proven. 1 refuted. 0 times theorem prover too weak. 3419 trivial. 0 not checked. [2021-11-21 01:42:52,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:42:55,543 INFO L134 CoverageAnalysis]: Checked inductivity of 5034 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2021-11-21 01:42:55,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218438362] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:42:55,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2057131349] [2021-11-21 01:42:55,585 INFO L159 IcfgInterpreter]: Started Sifa with 531 locations of interest [2021-11-21 01:42:55,588 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:42:55,598 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:42:55,604 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:42:55,605 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs