./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4af0568-a2f0-4073-a2ae-934c71fce24e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4af0568-a2f0-4073-a2ae-934c71fce24e/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4af0568-a2f0-4073-a2ae-934c71fce24e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4af0568-a2f0-4073-a2ae-934c71fce24e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4af0568-a2f0-4073-a2ae-934c71fce24e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4af0568-a2f0-4073-a2ae-934c71fce24e/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 92fce7e8733fef6ba8e1d7d5b12f8bb98a90f9164efa69e5285fd66b003407a0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:57:26,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:57:26,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:57:26,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:57:26,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:57:26,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:57:26,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:57:26,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:57:26,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:57:26,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:57:26,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:57:26,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:57:26,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:57:26,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:57:26,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:57:26,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:57:26,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:57:26,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:57:26,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:57:26,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:57:26,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:57:26,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:57:26,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:57:26,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:57:26,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:57:26,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:57:26,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:57:26,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:57:26,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:57:26,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:57:26,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:57:26,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:57:26,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:57:26,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:57:26,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:57:26,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:57:26,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:57:26,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:57:26,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:57:26,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:57:26,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:57:26,660 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4af0568-a2f0-4073-a2ae-934c71fce24e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:57:26,696 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:57:26,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:57:26,698 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:57:26,698 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:57:26,699 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:57:26,699 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:57:26,699 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:57:26,700 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:57:26,700 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:57:26,700 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:57:26,701 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:57:26,702 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:57:26,702 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:57:26,702 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:57:26,702 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:57:26,703 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:57:26,703 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:57:26,703 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:57:26,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:57:26,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:57:26,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:57:26,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:57:26,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:57:26,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:57:26,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:57:26,707 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:57:26,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:57:26,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:57:26,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:57:26,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:57:26,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:57:26,709 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:57:26,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:57:26,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:57:26,710 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:57:26,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:57:26,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:57:26,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:57:26,711 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4af0568-a2f0-4073-a2ae-934c71fce24e/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4af0568-a2f0-4073-a2ae-934c71fce24e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92fce7e8733fef6ba8e1d7d5b12f8bb98a90f9164efa69e5285fd66b003407a0 [2022-11-03 03:57:27,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:57:27,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:57:27,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:57:27,089 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:57:27,090 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:57:27,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4af0568-a2f0-4073-a2ae-934c71fce24e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2022-11-03 03:57:27,161 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4af0568-a2f0-4073-a2ae-934c71fce24e/bin/utaipan-7li7fVZpFI/data/76db956c8/fe7dfa5ad5b94cc2aa618f05d5841bdf/FLAG431839a1b [2022-11-03 03:57:28,241 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:57:28,242 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4af0568-a2f0-4073-a2ae-934c71fce24e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2022-11-03 03:57:28,313 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4af0568-a2f0-4073-a2ae-934c71fce24e/bin/utaipan-7li7fVZpFI/data/76db956c8/fe7dfa5ad5b94cc2aa618f05d5841bdf/FLAG431839a1b [2022-11-03 03:57:28,522 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4af0568-a2f0-4073-a2ae-934c71fce24e/bin/utaipan-7li7fVZpFI/data/76db956c8/fe7dfa5ad5b94cc2aa618f05d5841bdf [2022-11-03 03:57:28,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:57:28,525 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:57:28,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:57:28,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:57:28,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:57:28,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:57:28" (1/1) ... [2022-11-03 03:57:28,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76ac8ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:28, skipping insertion in model container [2022-11-03 03:57:28,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:57:28" (1/1) ... [2022-11-03 03:57:28,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:57:28,757 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:57:35,688 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_b4af0568-a2f0-4073-a2ae-934c71fce24e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622479,622492] [2022-11-03 03:57:35,691 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_b4af0568-a2f0-4073-a2ae-934c71fce24e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622648,622661] [2022-11-03 03:57:35,692 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_b4af0568-a2f0-4073-a2ae-934c71fce24e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622815,622828] [2022-11-03 03:57:35,692 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_b4af0568-a2f0-4073-a2ae-934c71fce24e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622983,622996] [2022-11-03 03:57:35,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:57:35,825 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:57:36,471 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_b4af0568-a2f0-4073-a2ae-934c71fce24e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622479,622492] [2022-11-03 03:57:36,472 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4af0568-a2f0-4073-a2ae-934c71fce24e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622648,622661] [2022-11-03 03:57:36,473 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_b4af0568-a2f0-4073-a2ae-934c71fce24e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622815,622828] [2022-11-03 03:57:36,473 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_b4af0568-a2f0-4073-a2ae-934c71fce24e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622983,622996] [2022-11-03 03:57:36,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:57:36,889 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:57:36,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:36 WrapperNode [2022-11-03 03:57:36,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:57:36,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:57:36,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:57:36,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:57:36,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:36" (1/1) ... [2022-11-03 03:57:37,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:36" (1/1) ... [2022-11-03 03:57:37,640 INFO L138 Inliner]: procedures = 780, calls = 5890, calls flagged for inlining = 431, calls inlined = 378, statements flattened = 14351 [2022-11-03 03:57:37,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:57:37,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:57:37,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:57:37,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:57:37,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:36" (1/1) ... [2022-11-03 03:57:37,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:36" (1/1) ... [2022-11-03 03:57:37,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:36" (1/1) ... [2022-11-03 03:57:37,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:36" (1/1) ... [2022-11-03 03:57:38,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:36" (1/1) ... [2022-11-03 03:57:38,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:36" (1/1) ... [2022-11-03 03:57:38,618 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:36" (1/1) ... [2022-11-03 03:57:38,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:36" (1/1) ... [2022-11-03 03:57:38,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:57:38,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:57:38,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:57:38,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:57:38,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:36" (1/1) ... [2022-11-03 03:57:38,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:57:38,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4af0568-a2f0-4073-a2ae-934c71fce24e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:57:38,862 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4af0568-a2f0-4073-a2ae-934c71fce24e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:57:38,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4af0568-a2f0-4073-a2ae-934c71fce24e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:57:38,905 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_sge_intr_msix [2022-11-03 03:57:38,905 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_sge_intr_msix [2022-11-03 03:57:38,905 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-03 03:57:38,905 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-03 03:57:38,905 INFO L130 BoogieDeclarations]: Found specification of procedure seq_putc [2022-11-03 03:57:38,906 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_putc [2022-11-03 03:57:38,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 03:57:38,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 03:57:38,906 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 03:57:38,906 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 03:57:38,906 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 03:57:38,906 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 03:57:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup_debugfs [2022-11-03 03:57:38,907 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup_debugfs [2022-11-03 03:57:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 03:57:38,907 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 03:57:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_sw_desc [2022-11-03 03:57:38,907 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_sw_desc [2022-11-03 03:57:38,908 INFO L130 BoogieDeclarations]: Found specification of procedure is_t4 [2022-11-03 03:57:38,908 INFO L138 BoogieDeclarations]: Found implementation of procedure is_t4 [2022-11-03 03:57:38,908 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 03:57:38,908 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 03:57:38,908 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 03:57:38,908 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 03:57:38,908 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 03:57:38,909 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 03:57:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2022-11-03 03:57:38,909 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2022-11-03 03:57:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 03:57:38,909 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 03:57:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure is_new_response [2022-11-03 03:57:38,910 INFO L138 BoogieDeclarations]: Found implementation of procedure is_new_response [2022-11-03 03:57:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure __napi_schedule [2022-11-03 03:57:38,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __napi_schedule [2022-11-03 03:57:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 03:57:38,910 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 03:57:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure qenable [2022-11-03 03:57:38,911 INFO L138 BoogieDeclarations]: Found implementation of procedure qenable [2022-11-03 03:57:38,911 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2022-11-03 03:57:38,911 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2022-11-03 03:57:38,911 INFO L130 BoogieDeclarations]: Found specification of procedure is_10g_port [2022-11-03 03:57:38,911 INFO L138 BoogieDeclarations]: Found implementation of procedure is_10g_port [2022-11-03 03:57:38,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 03:57:38,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 03:57:38,912 INFO L130 BoogieDeclarations]: Found specification of procedure seq_open [2022-11-03 03:57:38,912 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_open [2022-11-03 03:57:38,912 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header_len [2022-11-03 03:57:38,912 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header_len [2022-11-03 03:57:38,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:57:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_get_port_stats [2022-11-03 03:57:38,913 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_get_port_stats [2022-11-03 03:57:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-03 03:57:38,913 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-03 03:57:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure free_tx_desc [2022-11-03 03:57:38,913 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tx_desc [2022-11-03 03:57:38,914 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_wr_mbox_core [2022-11-03 03:57:38,914 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_wr_mbox_core [2022-11-03 03:57:38,914 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_offset [2022-11-03 03:57:38,914 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_offset [2022-11-03 03:57:38,914 INFO L130 BoogieDeclarations]: Found specification of procedure netdev2adap [2022-11-03 03:57:38,914 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev2adap [2022-11-03 03:57:38,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 03:57:38,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 03:57:38,915 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-03 03:57:38,915 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-03 03:57:38,915 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 03:57:38,915 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 03:57:38,916 INFO L130 BoogieDeclarations]: Found specification of procedure core_ticks_to_us [2022-11-03 03:57:38,916 INFO L138 BoogieDeclarations]: Found implementation of procedure core_ticks_to_us [2022-11-03 03:57:38,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 03:57:38,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 03:57:38,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:57:38,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 03:57:38,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 03:57:38,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 03:57:38,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 03:57:38,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2022-11-03 03:57:38,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2022-11-03 03:57:38,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-03 03:57:38,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-03 03:57:38,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-03 03:57:38,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-03 03:57:38,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:57:38,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 03:57:38,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 03:57:38,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:57:38,919 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 03:57:38,919 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2022-11-03 03:57:38,919 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2022-11-03 03:57:38,919 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_change_mac [2022-11-03 03:57:38,919 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_change_mac [2022-11-03 03:57:38,919 INFO L130 BoogieDeclarations]: Found specification of procedure fl_starving [2022-11-03 03:57:38,920 INFO L138 BoogieDeclarations]: Found implementation of procedure fl_starving [2022-11-03 03:57:38,920 INFO L130 BoogieDeclarations]: Found specification of procedure adapter_down [2022-11-03 03:57:38,920 INFO L138 BoogieDeclarations]: Found implementation of procedure adapter_down [2022-11-03 03:57:38,920 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 03:57:38,920 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 03:57:38,920 INFO L130 BoogieDeclarations]: Found specification of procedure netdev2pinfo [2022-11-03 03:57:38,920 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev2pinfo [2022-11-03 03:57:38,921 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_free_vi [2022-11-03 03:57:38,921 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_free_vi [2022-11-03 03:57:38,921 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_free_sge_resources [2022-11-03 03:57:38,921 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_free_sge_resources [2022-11-03 03:57:38,921 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2022-11-03 03:57:38,921 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2022-11-03 03:57:38,922 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 03:57:38,922 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 03:57:38,922 INFO L130 BoogieDeclarations]: Found specification of procedure t4_read_reg [2022-11-03 03:57:38,922 INFO L138 BoogieDeclarations]: Found implementation of procedure t4_read_reg [2022-11-03 03:57:38,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 03:57:38,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 03:57:38,923 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 03:57:38,923 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 03:57:38,923 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule_prep [2022-11-03 03:57:38,923 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule_prep [2022-11-03 03:57:38,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:57:38,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:57:38,924 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 03:57:38,924 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 03:57:38,924 INFO L130 BoogieDeclarations]: Found specification of procedure is_eth_imm [2022-11-03 03:57:38,924 INFO L138 BoogieDeclarations]: Found implementation of procedure is_eth_imm [2022-11-03 03:57:38,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:57:38,924 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-03 03:57:38,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-03 03:57:38,925 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2022-11-03 03:57:38,925 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2022-11-03 03:57:38,925 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 03:57:38,925 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 03:57:38,925 INFO L130 BoogieDeclarations]: Found specification of procedure is_buf_mapped [2022-11-03 03:57:38,925 INFO L138 BoogieDeclarations]: Found implementation of procedure is_buf_mapped [2022-11-03 03:57:38,926 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-03 03:57:38,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 03:57:38,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 03:57:38,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:57:38,926 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:57:38,926 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-03 03:57:38,926 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-03 03:57:38,927 INFO L130 BoogieDeclarations]: Found specification of procedure reg_block_dump [2022-11-03 03:57:38,927 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_block_dump [2022-11-03 03:57:38,927 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-03 03:57:38,927 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-03 03:57:38,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:57:38,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:57:38,927 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2022-11-03 03:57:38,928 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2022-11-03 03:57:38,928 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_pci_shutdown [2022-11-03 03:57:38,928 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_pci_shutdown [2022-11-03 03:57:38,928 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-03 03:57:38,928 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-03 03:57:38,928 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 03:57:38,928 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 03:57:38,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 03:57:38,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 03:57:38,929 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-03 03:57:38,929 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-03 03:57:38,929 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-03 03:57:38,929 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-03 03:57:38,929 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_set_rxmode [2022-11-03 03:57:38,930 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_set_rxmode [2022-11-03 03:57:38,930 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 03:57:38,930 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 03:57:38,930 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-11-03 03:57:38,930 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-11-03 03:57:38,930 INFO L130 BoogieDeclarations]: Found specification of procedure get_buf_addr [2022-11-03 03:57:38,930 INFO L138 BoogieDeclarations]: Found implementation of procedure get_buf_addr [2022-11-03 03:57:38,931 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_wr_mbox [2022-11-03 03:57:38,931 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_wr_mbox [2022-11-03 03:57:38,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:57:38,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:57:38,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:57:38,931 INFO L130 BoogieDeclarations]: Found specification of procedure interfaces_get_idx [2022-11-03 03:57:38,931 INFO L138 BoogieDeclarations]: Found implementation of procedure interfaces_get_idx [2022-11-03 03:57:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-03 03:57:38,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-03 03:57:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_pci_remove [2022-11-03 03:57:38,932 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_pci_remove [2022-11-03 03:57:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2022-11-03 03:57:38,932 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2022-11-03 03:57:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_set_params [2022-11-03 03:57:38,933 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_set_params [2022-11-03 03:57:38,933 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 03:57:38,933 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 03:57:38,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:57:38,933 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:57:38,933 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-03 03:57:38,933 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-03 03:57:38,934 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_get_regs_len [2022-11-03 03:57:38,934 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_get_regs_len [2022-11-03 03:57:38,934 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_open [2022-11-03 03:57:38,934 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_open [2022-11-03 03:57:38,934 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-03 03:57:38,934 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-03 03:57:38,935 INFO L130 BoogieDeclarations]: Found specification of procedure refill_fl [2022-11-03 03:57:38,935 INFO L138 BoogieDeclarations]: Found implementation of procedure refill_fl [2022-11-03 03:57:38,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:57:38,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:57:38,935 INFO L130 BoogieDeclarations]: Found specification of procedure free_rx_bufs [2022-11-03 03:57:38,935 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rx_bufs [2022-11-03 03:57:38,935 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 03:57:38,936 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 03:57:38,936 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2022-11-03 03:57:38,936 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2022-11-03 03:57:38,936 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-03 03:57:38,936 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-03 03:57:38,936 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_query_params [2022-11-03 03:57:38,936 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_query_params [2022-11-03 03:57:38,937 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 03:57:38,937 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 03:57:38,937 INFO L130 BoogieDeclarations]: Found specification of procedure poison_buf [2022-11-03 03:57:38,937 INFO L138 BoogieDeclarations]: Found implementation of procedure poison_buf [2022-11-03 03:57:38,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 03:57:38,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 03:57:38,937 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-03 03:57:38,937 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-03 03:57:38,938 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 03:57:38,938 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 03:57:38,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 03:57:38,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 03:57:38,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:57:38,938 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2022-11-03 03:57:38,939 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2022-11-03 03:57:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2022-11-03 03:57:38,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2022-11-03 03:57:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 03:57:38,939 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 03:57:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure sge_qstats_entries [2022-11-03 03:57:38,939 INFO L138 BoogieDeclarations]: Found implementation of procedure sge_qstats_entries [2022-11-03 03:57:38,940 INFO L130 BoogieDeclarations]: Found specification of procedure fl_cap [2022-11-03 03:57:38,940 INFO L138 BoogieDeclarations]: Found implementation of procedure fl_cap [2022-11-03 03:57:38,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:57:38,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-03 03:57:38,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-03 03:57:38,940 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 03:57:38,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 03:57:38,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:57:38,941 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_ring [2022-11-03 03:57:38,941 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_ring [2022-11-03 03:57:38,941 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 03:57:38,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 03:57:38,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:57:38,942 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:57:38,942 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_alloc_mac_filt [2022-11-03 03:57:38,942 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_alloc_mac_filt [2022-11-03 03:57:38,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 03:57:38,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 03:57:38,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 03:57:38,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 03:57:38,943 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2022-11-03 03:57:38,943 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2022-11-03 03:57:38,943 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_set_rxmode [2022-11-03 03:57:38,943 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_set_rxmode [2022-11-03 03:57:38,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_cxgb4vf_module_exit_22_2 [2022-11-03 03:57:38,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_cxgb4vf_module_exit_22_2 [2022-11-03 03:57:38,944 INFO L130 BoogieDeclarations]: Found specification of procedure init_rspq [2022-11-03 03:57:38,944 INFO L138 BoogieDeclarations]: Found implementation of procedure init_rspq [2022-11-03 03:57:38,944 INFO L130 BoogieDeclarations]: Found specification of procedure adap2pinfo [2022-11-03 03:57:38,944 INFO L138 BoogieDeclarations]: Found implementation of procedure adap2pinfo [2022-11-03 03:57:38,944 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2022-11-03 03:57:38,944 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2022-11-03 03:57:38,945 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_stop [2022-11-03 03:57:38,945 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_stop [2022-11-03 03:57:38,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_seq_open [2022-11-03 03:57:38,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_seq_open [2022-11-03 03:57:38,945 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:57:38,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:57:38,946 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:57:38,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:57:38,946 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-03 03:57:38,946 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-03 03:57:38,946 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_enable_vi [2022-11-03 03:57:38,946 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_enable_vi [2022-11-03 03:57:38,946 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-11-03 03:57:38,947 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-11-03 03:57:38,947 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb4vf_poll_controller [2022-11-03 03:57:38,947 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb4vf_poll_controller [2022-11-03 03:57:38,947 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-03 03:57:38,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-03 03:57:38,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:57:38,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:57:38,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:57:38,948 INFO L130 BoogieDeclarations]: Found specification of procedure reclaimable [2022-11-03 03:57:38,948 INFO L138 BoogieDeclarations]: Found implementation of procedure reclaimable [2022-11-03 03:57:38,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 03:57:38,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 03:57:38,948 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-03 03:57:38,948 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-03 03:57:38,948 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_intr_handler [2022-11-03 03:57:38,949 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_intr_handler [2022-11-03 03:57:38,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2022-11-03 03:57:38,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2022-11-03 03:57:38,949 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2022-11-03 03:57:38,949 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2022-11-03 03:57:38,949 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_bits [2022-11-03 03:57:38,949 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_bits [2022-11-03 03:57:38,950 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-03 03:57:38,950 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-03 03:57:38,950 INFO L130 BoogieDeclarations]: Found specification of procedure qtimer_val [2022-11-03 03:57:38,950 INFO L138 BoogieDeclarations]: Found implementation of procedure qtimer_val [2022-11-03 03:57:38,950 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msix [2022-11-03 03:57:38,950 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msix [2022-11-03 03:57:38,950 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2022-11-03 03:57:38,951 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2022-11-03 03:57:38,951 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 03:57:38,951 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 03:57:38,951 INFO L130 BoogieDeclarations]: Found specification of procedure rspq_next [2022-11-03 03:57:38,951 INFO L138 BoogieDeclarations]: Found implementation of procedure rspq_next [2022-11-03 03:57:38,951 INFO L130 BoogieDeclarations]: Found specification of procedure dump_mbox [2022-11-03 03:57:38,951 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_mbox [2022-11-03 03:57:38,952 INFO L130 BoogieDeclarations]: Found specification of procedure t4_write_reg [2022-11-03 03:57:38,952 INFO L138 BoogieDeclarations]: Found implementation of procedure t4_write_reg [2022-11-03 03:57:38,952 INFO L130 BoogieDeclarations]: Found specification of procedure txq_stop [2022-11-03 03:57:38,952 INFO L138 BoogieDeclarations]: Found implementation of procedure txq_stop [2022-11-03 03:57:38,952 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-03 03:57:38,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-03 03:57:38,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:57:38,953 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 03:57:38,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 03:57:38,953 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-03 03:57:38,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-03 03:57:38,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-03 03:57:38,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-03 03:57:38,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 03:57:38,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 03:57:38,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-03 03:57:38,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-03 03:57:38,954 INFO L130 BoogieDeclarations]: Found specification of procedure t4_read_reg64 [2022-11-03 03:57:38,954 INFO L138 BoogieDeclarations]: Found implementation of procedure t4_read_reg64 [2022-11-03 03:57:38,954 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_weight [2022-11-03 03:57:38,954 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_weight [2022-11-03 03:57:38,954 INFO L130 BoogieDeclarations]: Found specification of procedure free_rspq_fl [2022-11-03 03:57:38,955 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rspq_fl [2022-11-03 03:57:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 03:57:38,955 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 03:57:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 03:57:38,955 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 03:57:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-03 03:57:38,955 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-03 03:57:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:57:38,956 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:57:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure sge_queue_entries [2022-11-03 03:57:38,956 INFO L138 BoogieDeclarations]: Found implementation of procedure sge_queue_entries [2022-11-03 03:57:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure seq_release [2022-11-03 03:57:38,956 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_release [2022-11-03 03:57:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure get_buf_size [2022-11-03 03:57:38,957 INFO L138 BoogieDeclarations]: Found implementation of procedure get_buf_size [2022-11-03 03:57:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 03:57:38,957 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 03:57:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure __ilog2_u32 [2022-11-03 03:57:38,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __ilog2_u32 [2022-11-03 03:57:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-03 03:57:38,957 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-03 03:57:38,958 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2022-11-03 03:57:38,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2022-11-03 03:57:38,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 03:57:38,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 03:57:38,958 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-03 03:57:38,958 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-03 03:57:38,958 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_master [2022-11-03 03:57:38,959 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_master [2022-11-03 03:57:38,959 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 03:57:38,959 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 03:57:38,959 INFO L130 BoogieDeclarations]: Found specification of procedure t4vf_sge_alloc_rxq [2022-11-03 03:57:38,959 INFO L138 BoogieDeclarations]: Found implementation of procedure t4vf_sge_alloc_rxq [2022-11-03 03:57:38,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:57:38,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 03:57:38,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 03:57:38,960 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-03 03:57:38,960 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-03 03:57:40,720 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:57:40,723 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:57:43,144 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:58:01,428 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 03:58:02,033 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:58:05,511 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:58:05,511 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-03 03:58:05,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:58:05 BoogieIcfgContainer [2022-11-03 03:58:05,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:58:05,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:58:05,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:58:05,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:58:05,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:57:28" (1/3) ... [2022-11-03 03:58:05,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f46c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:58:05, skipping insertion in model container [2022-11-03 03:58:05,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:36" (2/3) ... [2022-11-03 03:58:05,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f46c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:58:05, skipping insertion in model container [2022-11-03 03:58:05,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:58:05" (3/3) ... [2022-11-03 03:58:05,528 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2022-11-03 03:58:05,547 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:58:05,548 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-03 03:58:05,644 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:58:05,650 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@15bf8728, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:58:05,651 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-03 03:58:05,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 3096 states, 1871 states have (on average 1.3003741314804917) internal successors, (2433), 1909 states have internal predecessors, (2433), 1047 states have call successors, (1047), 175 states have call predecessors, (1047), 174 states have return successors, (1038), 1033 states have call predecessors, (1038), 1038 states have call successors, (1038) [2022-11-03 03:58:05,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2022-11-03 03:58:05,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:58:05,706 INFO L195 NwaCegarLoop]: trace histogram [59, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:58:05,707 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 03:58:05,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:58:05,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1062756757, now seen corresponding path program 1 times [2022-11-03 03:58:05,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:58:05,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151361433] [2022-11-03 03:58:05,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:58:05,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:58:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:58:07,696 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13340 trivial. 0 not checked. [2022-11-03 03:58:07,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:58:07,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151361433] [2022-11-03 03:58:07,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151361433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:58:07,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:58:07,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:58:07,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599928830] [2022-11-03 03:58:07,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:58:07,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:58:07,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:58:07,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:58:07,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:58:07,755 INFO L87 Difference]: Start difference. First operand has 3096 states, 1871 states have (on average 1.3003741314804917) internal successors, (2433), 1909 states have internal predecessors, (2433), 1047 states have call successors, (1047), 175 states have call predecessors, (1047), 174 states have return successors, (1038), 1033 states have call predecessors, (1038), 1038 states have call successors, (1038) Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-11-03 03:58:12,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:14,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:17,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:22,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:58:22,421 INFO L93 Difference]: Finished difference Result 8954 states and 13097 transitions. [2022-11-03 03:58:22,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:58:22,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 602 [2022-11-03 03:58:22,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:58:22,506 INFO L225 Difference]: With dead ends: 8954 [2022-11-03 03:58:22,506 INFO L226 Difference]: Without dead ends: 5961 [2022-11-03 03:58:22,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:58:22,540 INFO L413 NwaCegarLoop]: 4844 mSDtfsCounter, 4235 mSDsluCounter, 4442 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4235 SdHoareTripleChecker+Valid, 8684 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:58:22,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4235 Valid, 8684 Invalid, 1256 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 1246 Invalid, 2 Unknown, 0 Unchecked, 14.0s Time] [2022-11-03 03:58:22,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5961 states. [2022-11-03 03:58:23,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5961 to 5955. [2022-11-03 03:58:23,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5955 states, 3631 states have (on average 1.2999173781327458) internal successors, (4720), 3702 states have internal predecessors, (4720), 1976 states have call successors, (1976), 345 states have call predecessors, (1976), 344 states have return successors, (1972), 1962 states have call predecessors, (1972), 1972 states have call successors, (1972) [2022-11-03 03:58:23,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5955 states to 5955 states and 8668 transitions. [2022-11-03 03:58:23,143 INFO L78 Accepts]: Start accepts. Automaton has 5955 states and 8668 transitions. Word has length 602 [2022-11-03 03:58:23,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:58:23,145 INFO L495 AbstractCegarLoop]: Abstraction has 5955 states and 8668 transitions. [2022-11-03 03:58:23,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-11-03 03:58:23,146 INFO L276 IsEmpty]: Start isEmpty. Operand 5955 states and 8668 transitions. [2022-11-03 03:58:23,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2022-11-03 03:58:23,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:58:23,167 INFO L195 NwaCegarLoop]: trace histogram [59, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:58:23,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:58:23,168 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 03:58:23,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:58:23,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1492756145, now seen corresponding path program 1 times [2022-11-03 03:58:23,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:58:23,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521223470] [2022-11-03 03:58:23,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:58:23,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:58:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:58:24,482 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13340 trivial. 0 not checked. [2022-11-03 03:58:24,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:58:24,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521223470] [2022-11-03 03:58:24,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521223470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:58:24,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:58:24,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:58:24,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043339092] [2022-11-03 03:58:24,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:58:24,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:58:24,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:58:24,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:58:24,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:58:24,492 INFO L87 Difference]: Start difference. First operand 5955 states and 8668 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) [2022-11-03 03:58:28,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:32,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:58:32,190 INFO L93 Difference]: Finished difference Result 11905 states and 17285 transitions. [2022-11-03 03:58:32,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:58:32,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) Word has length 618 [2022-11-03 03:58:32,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:58:32,242 INFO L225 Difference]: With dead ends: 11905 [2022-11-03 03:58:32,242 INFO L226 Difference]: Without dead ends: 6067 [2022-11-03 03:58:32,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:58:32,267 INFO L413 NwaCegarLoop]: 3838 mSDtfsCounter, 4178 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4180 SdHoareTripleChecker+Valid, 4167 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:58:32,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4180 Valid, 4167 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 631 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-11-03 03:58:32,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6067 states. [2022-11-03 03:58:32,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6067 to 6059. [2022-11-03 03:58:32,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6059 states, 3684 states have (on average 1.298045602605863) internal successors, (4782), 3762 states have internal predecessors, (4782), 2000 states have call successors, (2000), 373 states have call predecessors, (2000), 372 states have return successors, (1996), 1986 states have call predecessors, (1996), 1996 states have call successors, (1996) [2022-11-03 03:58:32,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6059 states to 6059 states and 8778 transitions. [2022-11-03 03:58:32,638 INFO L78 Accepts]: Start accepts. Automaton has 6059 states and 8778 transitions. Word has length 618 [2022-11-03 03:58:32,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:58:32,640 INFO L495 AbstractCegarLoop]: Abstraction has 6059 states and 8778 transitions. [2022-11-03 03:58:32,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) [2022-11-03 03:58:32,640 INFO L276 IsEmpty]: Start isEmpty. Operand 6059 states and 8778 transitions. [2022-11-03 03:58:32,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2022-11-03 03:58:32,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:58:32,661 INFO L195 NwaCegarLoop]: trace histogram [59, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:58:32,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:58:32,662 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 03:58:32,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:58:32,664 INFO L85 PathProgramCache]: Analyzing trace with hash 929503042, now seen corresponding path program 1 times [2022-11-03 03:58:32,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:58:32,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888243599] [2022-11-03 03:58:32,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:58:32,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:58:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:58:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13340 trivial. 0 not checked. [2022-11-03 03:58:33,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:58:33,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888243599] [2022-11-03 03:58:33,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888243599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:58:33,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:58:33,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:58:33,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136805702] [2022-11-03 03:58:33,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:58:33,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:58:33,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:58:33,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:58:33,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:58:33,450 INFO L87 Difference]: Start difference. First operand 6059 states and 8778 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2022-11-03 03:58:36,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:43,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:46,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:58:46,851 INFO L93 Difference]: Finished difference Result 16029 states and 23236 transitions. [2022-11-03 03:58:46,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:58:46,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) Word has length 625 [2022-11-03 03:58:46,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:58:46,922 INFO L225 Difference]: With dead ends: 16029 [2022-11-03 03:58:46,923 INFO L226 Difference]: Without dead ends: 10105 [2022-11-03 03:58:46,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:58:46,952 INFO L413 NwaCegarLoop]: 4506 mSDtfsCounter, 2977 mSDsluCounter, 4295 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2980 SdHoareTripleChecker+Valid, 8250 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:58:46,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2980 Valid, 8250 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1256 Invalid, 2 Unknown, 0 Unchecked, 12.8s Time] [2022-11-03 03:58:46,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10105 states. [2022-11-03 03:58:47,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10105 to 10070. [2022-11-03 03:58:47,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10070 states, 6137 states have (on average 1.3011243278474824) internal successors, (7985), 6273 states have internal predecessors, (7985), 3303 states have call successors, (3303), 630 states have call predecessors, (3303), 627 states have return successors, (3305), 3274 states have call predecessors, (3305), 3299 states have call successors, (3305) [2022-11-03 03:58:47,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10070 states to 10070 states and 14593 transitions. [2022-11-03 03:58:47,650 INFO L78 Accepts]: Start accepts. Automaton has 10070 states and 14593 transitions. Word has length 625 [2022-11-03 03:58:47,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:58:47,653 INFO L495 AbstractCegarLoop]: Abstraction has 10070 states and 14593 transitions. [2022-11-03 03:58:47,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2022-11-03 03:58:47,654 INFO L276 IsEmpty]: Start isEmpty. Operand 10070 states and 14593 transitions. [2022-11-03 03:58:47,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2022-11-03 03:58:47,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:58:47,675 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:58:47,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:58:47,676 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 03:58:47,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:58:47,678 INFO L85 PathProgramCache]: Analyzing trace with hash -256308535, now seen corresponding path program 1 times [2022-11-03 03:58:47,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:58:47,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799681020] [2022-11-03 03:58:47,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:58:47,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:58:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:58:49,518 INFO L134 CoverageAnalysis]: Checked inductivity of 13597 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13597 trivial. 0 not checked. [2022-11-03 03:58:49,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:58:49,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799681020] [2022-11-03 03:58:49,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799681020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:58:49,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:58:49,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:58:49,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98290944] [2022-11-03 03:58:49,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:58:49,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:58:49,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:58:49,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:58:49,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:58:49,525 INFO L87 Difference]: Start difference. First operand 10070 states and 14593 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2022-11-03 03:58:58,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:03,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:09,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:09,076 INFO L93 Difference]: Finished difference Result 20011 states and 28997 transitions. [2022-11-03 03:59:09,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:59:09,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 636 [2022-11-03 03:59:09,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:09,257 INFO L225 Difference]: With dead ends: 20011 [2022-11-03 03:59:09,257 INFO L226 Difference]: Without dead ends: 20009 [2022-11-03 03:59:09,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:59:09,275 INFO L413 NwaCegarLoop]: 4743 mSDtfsCounter, 4246 mSDsluCounter, 14885 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4261 SdHoareTripleChecker+Valid, 17830 SdHoareTripleChecker+Invalid, 2425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:09,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4261 Valid, 17830 Invalid, 2425 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2421 Invalid, 2 Unknown, 0 Unchecked, 18.5s Time] [2022-11-03 03:59:09,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20009 states. [2022-11-03 03:59:10,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20009 to 19995. [2022-11-03 03:59:10,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19995 states, 12197 states have (on average 1.3029433467246043) internal successors, (15892), 12471 states have internal predecessors, (15892), 6544 states have call successors, (6544), 1257 states have call predecessors, (6544), 1251 states have return successors, (6548), 6482 states have call predecessors, (6548), 6536 states have call successors, (6548) [2022-11-03 03:59:10,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19995 states to 19995 states and 28984 transitions. [2022-11-03 03:59:10,741 INFO L78 Accepts]: Start accepts. Automaton has 19995 states and 28984 transitions. Word has length 636 [2022-11-03 03:59:10,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:10,742 INFO L495 AbstractCegarLoop]: Abstraction has 19995 states and 28984 transitions. [2022-11-03 03:59:10,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2022-11-03 03:59:10,743 INFO L276 IsEmpty]: Start isEmpty. Operand 19995 states and 28984 transitions. [2022-11-03 03:59:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2022-11-03 03:59:10,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:10,755 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 4, 4, 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] [2022-11-03 03:59:10,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:59:10,756 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 03:59:10,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:10,756 INFO L85 PathProgramCache]: Analyzing trace with hash -154572959, now seen corresponding path program 1 times [2022-11-03 03:59:10,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:10,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145965530] [2022-11-03 03:59:10,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:10,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:12,384 INFO L134 CoverageAnalysis]: Checked inductivity of 13603 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13601 trivial. 0 not checked. [2022-11-03 03:59:12,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:12,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145965530] [2022-11-03 03:59:12,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145965530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:12,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:59:12,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:59:12,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259690948] [2022-11-03 03:59:12,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:12,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:59:12,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:12,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:59:12,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:59:12,388 INFO L87 Difference]: Start difference. First operand 19995 states and 28984 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-03 03:59:15,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:22,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:24,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:27,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:28,000 INFO L93 Difference]: Finished difference Result 20793 states and 29965 transitions. [2022-11-03 03:59:28,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:59:28,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) Word has length 648 [2022-11-03 03:59:28,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:28,119 INFO L225 Difference]: With dead ends: 20793 [2022-11-03 03:59:28,119 INFO L226 Difference]: Without dead ends: 20791 [2022-11-03 03:59:28,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:59:28,138 INFO L413 NwaCegarLoop]: 3877 mSDtfsCounter, 4037 mSDsluCounter, 9396 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4056 SdHoareTripleChecker+Valid, 11985 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:28,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4056 Valid, 11985 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1922 Invalid, 2 Unknown, 0 Unchecked, 14.9s Time] [2022-11-03 03:59:28,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20791 states. [2022-11-03 03:59:29,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20791 to 20775. [2022-11-03 03:59:29,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20775 states, 12627 states have (on average 1.29927932208759) internal successors, (16406), 12925 states have internal predecessors, (16406), 6764 states have call successors, (6764), 1387 states have call predecessors, (6764), 1381 states have return successors, (6768), 6702 states have call predecessors, (6768), 6756 states have call successors, (6768) [2022-11-03 03:59:29,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20775 states to 20775 states and 29938 transitions. [2022-11-03 03:59:29,765 INFO L78 Accepts]: Start accepts. Automaton has 20775 states and 29938 transitions. Word has length 648 [2022-11-03 03:59:29,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:29,767 INFO L495 AbstractCegarLoop]: Abstraction has 20775 states and 29938 transitions. [2022-11-03 03:59:29,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-03 03:59:29,767 INFO L276 IsEmpty]: Start isEmpty. Operand 20775 states and 29938 transitions. [2022-11-03 03:59:29,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2022-11-03 03:59:29,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:29,783 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:59:29,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:59:29,784 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 03:59:29,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:29,785 INFO L85 PathProgramCache]: Analyzing trace with hash -779858024, now seen corresponding path program 1 times [2022-11-03 03:59:29,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:29,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115927365] [2022-11-03 03:59:29,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:29,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:31,773 INFO L134 CoverageAnalysis]: Checked inductivity of 13608 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13604 trivial. 0 not checked. [2022-11-03 03:59:31,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:31,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115927365] [2022-11-03 03:59:31,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115927365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:31,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:59:31,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:59:31,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931129434] [2022-11-03 03:59:31,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:31,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:59:31,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:31,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:59:31,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:59:31,777 INFO L87 Difference]: Start difference. First operand 20775 states and 29938 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2022-11-03 03:59:35,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:44,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:48,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:48,249 INFO L93 Difference]: Finished difference Result 20785 states and 29947 transitions. [2022-11-03 03:59:48,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:59:48,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) Word has length 652 [2022-11-03 03:59:48,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:48,350 INFO L225 Difference]: With dead ends: 20785 [2022-11-03 03:59:48,350 INFO L226 Difference]: Without dead ends: 20783 [2022-11-03 03:59:48,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:59:48,364 INFO L413 NwaCegarLoop]: 3877 mSDtfsCounter, 4062 mSDsluCounter, 9366 mSDsCounter, 0 mSdLazyCounter, 1918 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4078 SdHoareTripleChecker+Valid, 11959 SdHoareTripleChecker+Invalid, 1921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1918 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:48,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4078 Valid, 11959 Invalid, 1921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1918 Invalid, 2 Unknown, 0 Unchecked, 15.5s Time] [2022-11-03 03:59:48,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20783 states. [2022-11-03 03:59:49,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20783 to 20783. [2022-11-03 03:59:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20783 states, 12633 states have (on average 1.2991371804005383) internal successors, (16412), 12931 states have internal predecessors, (16412), 6764 states have call successors, (6764), 1389 states have call predecessors, (6764), 1383 states have return successors, (6768), 6702 states have call predecessors, (6768), 6756 states have call successors, (6768) [2022-11-03 03:59:49,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20783 states to 20783 states and 29944 transitions. [2022-11-03 03:59:49,693 INFO L78 Accepts]: Start accepts. Automaton has 20783 states and 29944 transitions. Word has length 652 [2022-11-03 03:59:49,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:49,694 INFO L495 AbstractCegarLoop]: Abstraction has 20783 states and 29944 transitions. [2022-11-03 03:59:49,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2022-11-03 03:59:49,694 INFO L276 IsEmpty]: Start isEmpty. Operand 20783 states and 29944 transitions. [2022-11-03 03:59:49,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2022-11-03 03:59:49,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:49,707 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:59:49,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:59:49,708 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 03:59:49,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:49,708 INFO L85 PathProgramCache]: Analyzing trace with hash 527951977, now seen corresponding path program 1 times [2022-11-03 03:59:49,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:49,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388091597] [2022-11-03 03:59:49,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:49,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 13615 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13609 trivial. 0 not checked. [2022-11-03 03:59:51,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:51,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388091597] [2022-11-03 03:59:51,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388091597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:51,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:59:51,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:59:51,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31153801] [2022-11-03 03:59:51,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:51,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:59:51,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:51,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:59:51,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:59:51,394 INFO L87 Difference]: Start difference. First operand 20783 states and 29944 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2022-11-03 03:59:54,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:02,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:05,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:05,898 INFO L93 Difference]: Finished difference Result 20793 states and 29953 transitions. [2022-11-03 04:00:05,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:00:05,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 651 [2022-11-03 04:00:05,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:06,037 INFO L225 Difference]: With dead ends: 20793 [2022-11-03 04:00:06,037 INFO L226 Difference]: Without dead ends: 20791 [2022-11-03 04:00:06,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:00:06,046 INFO L413 NwaCegarLoop]: 3791 mSDtfsCounter, 4241 mSDsluCounter, 8761 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4253 SdHoareTripleChecker+Valid, 11350 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:06,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4253 Valid, 11350 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1825 Invalid, 1 Unknown, 0 Unchecked, 13.6s Time] [2022-11-03 04:00:06,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20791 states. [2022-11-03 04:00:07,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20791 to 20791. [2022-11-03 04:00:07,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20791 states, 12639 states have (on average 1.298995173668803) internal successors, (16418), 12937 states have internal predecessors, (16418), 6764 states have call successors, (6764), 1391 states have call predecessors, (6764), 1385 states have return successors, (6768), 6702 states have call predecessors, (6768), 6756 states have call successors, (6768) [2022-11-03 04:00:07,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20791 states to 20791 states and 29950 transitions. [2022-11-03 04:00:07,482 INFO L78 Accepts]: Start accepts. Automaton has 20791 states and 29950 transitions. Word has length 651 [2022-11-03 04:00:07,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:07,484 INFO L495 AbstractCegarLoop]: Abstraction has 20791 states and 29950 transitions. [2022-11-03 04:00:07,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2022-11-03 04:00:07,484 INFO L276 IsEmpty]: Start isEmpty. Operand 20791 states and 29950 transitions. [2022-11-03 04:00:07,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2022-11-03 04:00:07,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:07,507 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:07,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 04:00:07,508 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 04:00:07,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:07,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1964872265, now seen corresponding path program 1 times [2022-11-03 04:00:07,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:07,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79387924] [2022-11-03 04:00:07,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:07,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:09,526 INFO L134 CoverageAnalysis]: Checked inductivity of 13629 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13621 trivial. 0 not checked. [2022-11-03 04:00:09,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:09,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79387924] [2022-11-03 04:00:09,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79387924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:09,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:09,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:00:09,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101831620] [2022-11-03 04:00:09,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:09,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:00:09,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:09,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:00:09,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:00:09,530 INFO L87 Difference]: Start difference. First operand 20791 states and 29950 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-03 04:00:21,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:21,457 INFO L93 Difference]: Finished difference Result 20947 states and 30088 transitions. [2022-11-03 04:00:21,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:00:21,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) Word has length 656 [2022-11-03 04:00:21,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:21,562 INFO L225 Difference]: With dead ends: 20947 [2022-11-03 04:00:21,562 INFO L226 Difference]: Without dead ends: 20945 [2022-11-03 04:00:21,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:00:21,578 INFO L413 NwaCegarLoop]: 3800 mSDtfsCounter, 4190 mSDsluCounter, 8861 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4201 SdHoareTripleChecker+Valid, 11444 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:21,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4201 Valid, 11444 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1842 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2022-11-03 04:00:21,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20945 states. [2022-11-03 04:00:23,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20945 to 20943. [2022-11-03 04:00:23,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20943 states, 12729 states have (on average 1.2978238667609396) internal successors, (16520), 13031 states have internal predecessors, (16520), 6780 states have call successors, (6780), 1437 states have call predecessors, (6780), 1431 states have return successors, (6784), 6718 states have call predecessors, (6784), 6772 states have call successors, (6784) [2022-11-03 04:00:23,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20943 states to 20943 states and 30084 transitions. [2022-11-03 04:00:23,142 INFO L78 Accepts]: Start accepts. Automaton has 20943 states and 30084 transitions. Word has length 656 [2022-11-03 04:00:23,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:23,143 INFO L495 AbstractCegarLoop]: Abstraction has 20943 states and 30084 transitions. [2022-11-03 04:00:23,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-03 04:00:23,143 INFO L276 IsEmpty]: Start isEmpty. Operand 20943 states and 30084 transitions. [2022-11-03 04:00:23,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2022-11-03 04:00:23,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:23,250 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:23,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 04:00:23,251 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 04:00:23,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:23,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1074516951, now seen corresponding path program 1 times [2022-11-03 04:00:23,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:23,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039732487] [2022-11-03 04:00:23,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:23,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:24,534 INFO L134 CoverageAnalysis]: Checked inductivity of 13647 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13637 trivial. 0 not checked. [2022-11-03 04:00:24,534 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:24,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039732487] [2022-11-03 04:00:24,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039732487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:24,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:24,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:00:24,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608412516] [2022-11-03 04:00:24,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:24,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:00:24,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:24,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:00:24,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:00:24,538 INFO L87 Difference]: Start difference. First operand 20943 states and 30084 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2022-11-03 04:00:34,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:37,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:37,806 INFO L93 Difference]: Finished difference Result 20969 states and 30117 transitions. [2022-11-03 04:00:37,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:00:37,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) Word has length 661 [2022-11-03 04:00:37,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:37,886 INFO L225 Difference]: With dead ends: 20969 [2022-11-03 04:00:37,886 INFO L226 Difference]: Without dead ends: 20967 [2022-11-03 04:00:37,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:00:37,898 INFO L413 NwaCegarLoop]: 3822 mSDtfsCounter, 4216 mSDsluCounter, 8985 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4228 SdHoareTripleChecker+Valid, 11583 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:37,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4228 Valid, 11583 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1847 Invalid, 1 Unknown, 0 Unchecked, 12.1s Time] [2022-11-03 04:00:37,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20967 states. [2022-11-03 04:00:39,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20967 to 20951. [2022-11-03 04:00:39,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20951 states, 12735 states have (on average 1.2976835492736554) internal successors, (16526), 13037 states have internal predecessors, (16526), 6780 states have call successors, (6780), 1439 states have call predecessors, (6780), 1433 states have return successors, (6784), 6718 states have call predecessors, (6784), 6772 states have call successors, (6784) [2022-11-03 04:00:39,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20951 states to 20951 states and 30090 transitions. [2022-11-03 04:00:39,165 INFO L78 Accepts]: Start accepts. Automaton has 20951 states and 30090 transitions. Word has length 661 [2022-11-03 04:00:39,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:39,165 INFO L495 AbstractCegarLoop]: Abstraction has 20951 states and 30090 transitions. [2022-11-03 04:00:39,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2022-11-03 04:00:39,166 INFO L276 IsEmpty]: Start isEmpty. Operand 20951 states and 30090 transitions. [2022-11-03 04:00:39,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2022-11-03 04:00:39,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:39,183 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:39,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 04:00:39,184 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 04:00:39,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:39,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1588581897, now seen corresponding path program 1 times [2022-11-03 04:00:39,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:39,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976424430] [2022-11-03 04:00:39,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:39,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:40,535 INFO L134 CoverageAnalysis]: Checked inductivity of 13669 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 13657 trivial. 0 not checked. [2022-11-03 04:00:40,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:40,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976424430] [2022-11-03 04:00:40,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976424430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:40,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:40,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:00:40,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429583498] [2022-11-03 04:00:40,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:40,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:00:40,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:40,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:00:40,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:00:40,539 INFO L87 Difference]: Start difference. First operand 20951 states and 30090 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2022-11-03 04:00:51,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:51,551 INFO L93 Difference]: Finished difference Result 20961 states and 30099 transitions. [2022-11-03 04:00:51,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:00:51,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) Word has length 666 [2022-11-03 04:00:51,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:51,614 INFO L225 Difference]: With dead ends: 20961 [2022-11-03 04:00:51,614 INFO L226 Difference]: Without dead ends: 20959 [2022-11-03 04:00:51,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:00:51,623 INFO L413 NwaCegarLoop]: 3791 mSDtfsCounter, 4241 mSDsluCounter, 8761 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4250 SdHoareTripleChecker+Valid, 11350 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:51,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4250 Valid, 11350 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-11-03 04:00:51,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20959 states. [2022-11-03 04:00:52,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20959 to 20959. [2022-11-03 04:00:52,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20959 states, 12741 states have (on average 1.2975433639431755) internal successors, (16532), 13043 states have internal predecessors, (16532), 6780 states have call successors, (6780), 1441 states have call predecessors, (6780), 1435 states have return successors, (6784), 6718 states have call predecessors, (6784), 6772 states have call successors, (6784) [2022-11-03 04:00:52,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20959 states to 20959 states and 30096 transitions. [2022-11-03 04:00:52,934 INFO L78 Accepts]: Start accepts. Automaton has 20959 states and 30096 transitions. Word has length 666 [2022-11-03 04:00:52,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:52,934 INFO L495 AbstractCegarLoop]: Abstraction has 20959 states and 30096 transitions. [2022-11-03 04:00:52,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2022-11-03 04:00:52,935 INFO L276 IsEmpty]: Start isEmpty. Operand 20959 states and 30096 transitions. [2022-11-03 04:00:52,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2022-11-03 04:00:52,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:52,951 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 8, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:52,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 04:00:52,951 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 04:00:52,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:52,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1640992791, now seen corresponding path program 1 times [2022-11-03 04:00:52,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:52,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053614399] [2022-11-03 04:00:52,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:52,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:54,064 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13681 trivial. 0 not checked. [2022-11-03 04:00:54,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:54,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053614399] [2022-11-03 04:00:54,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053614399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:54,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:54,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:00:54,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658762797] [2022-11-03 04:00:54,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:54,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:00:54,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:54,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:00:54,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:00:54,067 INFO L87 Difference]: Start difference. First operand 20959 states and 30096 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2022-11-03 04:01:03,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:06,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:09,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:09,793 INFO L93 Difference]: Finished difference Result 20985 states and 30129 transitions. [2022-11-03 04:01:09,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:01:09,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) Word has length 671 [2022-11-03 04:01:09,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:09,992 INFO L225 Difference]: With dead ends: 20985 [2022-11-03 04:01:09,993 INFO L226 Difference]: Without dead ends: 20983 [2022-11-03 04:01:09,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:01:09,999 INFO L413 NwaCegarLoop]: 3822 mSDtfsCounter, 4216 mSDsluCounter, 8985 mSDsCounter, 0 mSdLazyCounter, 1846 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4226 SdHoareTripleChecker+Valid, 11583 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1846 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:09,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4226 Valid, 11583 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1846 Invalid, 2 Unknown, 0 Unchecked, 14.5s Time] [2022-11-03 04:01:10,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20983 states. [2022-11-03 04:01:11,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20983 to 20967. [2022-11-03 04:01:11,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20967 states, 12747 states have (on average 1.2974033105828822) internal successors, (16538), 13049 states have internal predecessors, (16538), 6780 states have call successors, (6780), 1443 states have call predecessors, (6780), 1437 states have return successors, (6784), 6718 states have call predecessors, (6784), 6772 states have call successors, (6784) [2022-11-03 04:01:11,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20967 states to 20967 states and 30102 transitions. [2022-11-03 04:01:11,390 INFO L78 Accepts]: Start accepts. Automaton has 20967 states and 30102 transitions. Word has length 671 [2022-11-03 04:01:11,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:11,391 INFO L495 AbstractCegarLoop]: Abstraction has 20967 states and 30102 transitions. [2022-11-03 04:01:11,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2022-11-03 04:01:11,392 INFO L276 IsEmpty]: Start isEmpty. Operand 20967 states and 30102 transitions. [2022-11-03 04:01:11,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2022-11-03 04:01:11,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:11,407 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 9, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:11,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 04:01:11,407 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 04:01:11,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:11,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1568532023, now seen corresponding path program 1 times [2022-11-03 04:01:11,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:11,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917339512] [2022-11-03 04:01:11,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:11,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:12,370 INFO L134 CoverageAnalysis]: Checked inductivity of 13725 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13709 trivial. 0 not checked. [2022-11-03 04:01:12,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:12,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917339512] [2022-11-03 04:01:12,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917339512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:12,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:12,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:01:12,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891329871] [2022-11-03 04:01:12,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:12,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:01:12,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:12,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:01:12,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:01:12,372 INFO L87 Difference]: Start difference. First operand 20967 states and 30102 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2022-11-03 04:01:15,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:24,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:27,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:27,860 INFO L93 Difference]: Finished difference Result 20993 states and 30135 transitions. [2022-11-03 04:01:27,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:01:27,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) Word has length 676 [2022-11-03 04:01:27,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:27,935 INFO L225 Difference]: With dead ends: 20993 [2022-11-03 04:01:27,936 INFO L226 Difference]: Without dead ends: 20991 [2022-11-03 04:01:27,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:01:27,946 INFO L413 NwaCegarLoop]: 3877 mSDtfsCounter, 4038 mSDsluCounter, 9396 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4050 SdHoareTripleChecker+Valid, 11985 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:27,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4050 Valid, 11985 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1922 Invalid, 2 Unknown, 0 Unchecked, 13.9s Time] [2022-11-03 04:01:27,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20991 states. [2022-11-03 04:01:29,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20991 to 20975. [2022-11-03 04:01:29,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20975 states, 12753 states have (on average 1.2972633890065082) internal successors, (16544), 13055 states have internal predecessors, (16544), 6780 states have call successors, (6780), 1445 states have call predecessors, (6780), 1439 states have return successors, (6784), 6718 states have call predecessors, (6784), 6772 states have call successors, (6784) [2022-11-03 04:01:29,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20975 states to 20975 states and 30108 transitions. [2022-11-03 04:01:29,319 INFO L78 Accepts]: Start accepts. Automaton has 20975 states and 30108 transitions. Word has length 676 [2022-11-03 04:01:29,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:29,320 INFO L495 AbstractCegarLoop]: Abstraction has 20975 states and 30108 transitions. [2022-11-03 04:01:29,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2022-11-03 04:01:29,321 INFO L276 IsEmpty]: Start isEmpty. Operand 20975 states and 30108 transitions. [2022-11-03 04:01:29,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2022-11-03 04:01:29,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:29,334 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 10, 9, 9, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:29,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 04:01:29,334 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 04:01:29,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:29,335 INFO L85 PathProgramCache]: Analyzing trace with hash 921656929, now seen corresponding path program 1 times [2022-11-03 04:01:29,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:29,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895550538] [2022-11-03 04:01:29,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:29,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:30,373 INFO L134 CoverageAnalysis]: Checked inductivity of 13763 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13745 trivial. 0 not checked. [2022-11-03 04:01:30,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:30,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895550538] [2022-11-03 04:01:30,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895550538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:30,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:30,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:01:30,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673482741] [2022-11-03 04:01:30,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:30,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:01:30,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:30,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:01:30,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:01:30,376 INFO L87 Difference]: Start difference. First operand 20975 states and 30108 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2022-11-03 04:01:33,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:42,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:45,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:45,357 INFO L93 Difference]: Finished difference Result 21001 states and 30141 transitions. [2022-11-03 04:01:45,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:01:45,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) Word has length 688 [2022-11-03 04:01:45,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:45,406 INFO L225 Difference]: With dead ends: 21001 [2022-11-03 04:01:45,406 INFO L226 Difference]: Without dead ends: 20999 [2022-11-03 04:01:45,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:01:45,412 INFO L413 NwaCegarLoop]: 3877 mSDtfsCounter, 4037 mSDsluCounter, 9396 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4048 SdHoareTripleChecker+Valid, 11985 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:45,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4048 Valid, 11985 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1922 Invalid, 2 Unknown, 0 Unchecked, 13.5s Time] [2022-11-03 04:01:45,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20999 states. [2022-11-03 04:01:46,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20999 to 20983. [2022-11-03 04:01:46,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20983 states, 12759 states have (on average 1.297123599028137) internal successors, (16550), 13061 states have internal predecessors, (16550), 6780 states have call successors, (6780), 1447 states have call predecessors, (6780), 1441 states have return successors, (6784), 6718 states have call predecessors, (6784), 6772 states have call successors, (6784) [2022-11-03 04:01:46,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20983 states to 20983 states and 30114 transitions. [2022-11-03 04:01:46,832 INFO L78 Accepts]: Start accepts. Automaton has 20983 states and 30114 transitions. Word has length 688 [2022-11-03 04:01:46,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:46,833 INFO L495 AbstractCegarLoop]: Abstraction has 20983 states and 30114 transitions. [2022-11-03 04:01:46,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2022-11-03 04:01:46,833 INFO L276 IsEmpty]: Start isEmpty. Operand 20983 states and 30114 transitions. [2022-11-03 04:01:46,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2022-11-03 04:01:46,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:46,848 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 11, 10, 10, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:46,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 04:01:46,849 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 04:01:46,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:46,849 INFO L85 PathProgramCache]: Analyzing trace with hash 2094719896, now seen corresponding path program 1 times [2022-11-03 04:01:46,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:46,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157193180] [2022-11-03 04:01:46,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:46,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:47,692 INFO L134 CoverageAnalysis]: Checked inductivity of 13800 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 13780 trivial. 0 not checked. [2022-11-03 04:01:47,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:47,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157193180] [2022-11-03 04:01:47,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157193180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:47,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:47,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:01:47,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162539568] [2022-11-03 04:01:47,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:47,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:01:47,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:47,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:01:47,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:01:47,695 INFO L87 Difference]: Start difference. First operand 20983 states and 30114 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (80), 3 states have call predecessors, (80), 1 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2022-11-03 04:01:55,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:58,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:02,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:02,228 INFO L93 Difference]: Finished difference Result 21009 states and 30147 transitions. [2022-11-03 04:02:02,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:02:02,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (80), 3 states have call predecessors, (80), 1 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) Word has length 692 [2022-11-03 04:02:02,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:02,306 INFO L225 Difference]: With dead ends: 21009 [2022-11-03 04:02:02,306 INFO L226 Difference]: Without dead ends: 21007 [2022-11-03 04:02:02,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:02:02,319 INFO L413 NwaCegarLoop]: 3822 mSDtfsCounter, 4215 mSDsluCounter, 8985 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4222 SdHoareTripleChecker+Valid, 11583 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:02,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4222 Valid, 11583 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1847 Invalid, 1 Unknown, 0 Unchecked, 13.0s Time] [2022-11-03 04:02:02,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21007 states. [2022-11-03 04:02:03,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21007 to 20991. [2022-11-03 04:02:03,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20991 states, 12765 states have (on average 1.2969839404622012) internal successors, (16556), 13067 states have internal predecessors, (16556), 6780 states have call successors, (6780), 1449 states have call predecessors, (6780), 1443 states have return successors, (6784), 6718 states have call predecessors, (6784), 6772 states have call successors, (6784) [2022-11-03 04:02:03,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20991 states to 20991 states and 30120 transitions. [2022-11-03 04:02:03,838 INFO L78 Accepts]: Start accepts. Automaton has 20991 states and 30120 transitions. Word has length 692 [2022-11-03 04:02:03,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:03,838 INFO L495 AbstractCegarLoop]: Abstraction has 20991 states and 30120 transitions. [2022-11-03 04:02:03,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (80), 3 states have call predecessors, (80), 1 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2022-11-03 04:02:03,838 INFO L276 IsEmpty]: Start isEmpty. Operand 20991 states and 30120 transitions. [2022-11-03 04:02:03,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2022-11-03 04:02:03,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:03,851 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 12, 11, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:03,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 04:02:03,851 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 04:02:03,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:03,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1407776617, now seen corresponding path program 1 times [2022-11-03 04:02:03,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:02:03,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080093223] [2022-11-03 04:02:03,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:03,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:02:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:04,670 INFO L134 CoverageAnalysis]: Checked inductivity of 13839 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13817 trivial. 0 not checked. [2022-11-03 04:02:04,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:02:04,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080093223] [2022-11-03 04:02:04,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080093223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:02:04,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:02:04,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:02:04,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466148852] [2022-11-03 04:02:04,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:02:04,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:02:04,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:02:04,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:02:04,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:02:04,673 INFO L87 Difference]: Start difference. First operand 20991 states and 30120 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (78), 3 states have call predecessors, (78), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2022-11-03 04:02:07,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:17,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:19,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:23,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:23,475 INFO L93 Difference]: Finished difference Result 21001 states and 30129 transitions. [2022-11-03 04:02:23,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:02:23,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (78), 3 states have call predecessors, (78), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) Word has length 691 [2022-11-03 04:02:23,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:23,543 INFO L225 Difference]: With dead ends: 21001 [2022-11-03 04:02:23,543 INFO L226 Difference]: Without dead ends: 20999 [2022-11-03 04:02:23,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:02:23,557 INFO L413 NwaCegarLoop]: 3791 mSDtfsCounter, 4241 mSDsluCounter, 8761 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4245 SdHoareTripleChecker+Valid, 11350 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:23,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4245 Valid, 11350 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1823 Invalid, 3 Unknown, 0 Unchecked, 17.2s Time] [2022-11-03 04:02:23,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20999 states. [2022-11-03 04:02:25,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20999 to 20999. [2022-11-03 04:02:25,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20999 states, 12771 states have (on average 1.2968444131234829) internal successors, (16562), 13073 states have internal predecessors, (16562), 6780 states have call successors, (6780), 1451 states have call predecessors, (6780), 1445 states have return successors, (6784), 6718 states have call predecessors, (6784), 6772 states have call successors, (6784) [2022-11-03 04:02:25,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20999 states to 20999 states and 30126 transitions. [2022-11-03 04:02:25,155 INFO L78 Accepts]: Start accepts. Automaton has 20999 states and 30126 transitions. Word has length 691 [2022-11-03 04:02:25,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:25,156 INFO L495 AbstractCegarLoop]: Abstraction has 20999 states and 30126 transitions. [2022-11-03 04:02:25,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (78), 3 states have call predecessors, (78), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2022-11-03 04:02:25,156 INFO L276 IsEmpty]: Start isEmpty. Operand 20999 states and 30126 transitions. [2022-11-03 04:02:25,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2022-11-03 04:02:25,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:25,167 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 13, 12, 12, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:25,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 04:02:25,167 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 04:02:25,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:25,168 INFO L85 PathProgramCache]: Analyzing trace with hash -300798063, now seen corresponding path program 1 times [2022-11-03 04:02:25,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:02:25,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662864270] [2022-11-03 04:02:25,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:25,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:02:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:26,175 INFO L134 CoverageAnalysis]: Checked inductivity of 13889 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 13865 trivial. 0 not checked. [2022-11-03 04:02:26,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:02:26,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662864270] [2022-11-03 04:02:26,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662864270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:02:26,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:02:26,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:02:26,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590189465] [2022-11-03 04:02:26,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:02:26,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:02:26,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:02:26,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:02:26,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:02:26,180 INFO L87 Difference]: Start difference. First operand 20999 states and 30126 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (82), 3 states have call predecessors, (82), 1 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2022-11-03 04:02:29,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:31,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:43,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:43,379 INFO L93 Difference]: Finished difference Result 21009 states and 30135 transitions. [2022-11-03 04:02:43,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:02:43,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (82), 3 states have call predecessors, (82), 1 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 703 [2022-11-03 04:02:43,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:43,434 INFO L225 Difference]: With dead ends: 21009 [2022-11-03 04:02:43,434 INFO L226 Difference]: Without dead ends: 21007 [2022-11-03 04:02:43,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:02:43,443 INFO L413 NwaCegarLoop]: 3791 mSDtfsCounter, 4240 mSDsluCounter, 8761 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4243 SdHoareTripleChecker+Valid, 11350 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:43,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4243 Valid, 11350 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1824 Invalid, 2 Unknown, 0 Unchecked, 15.5s Time] [2022-11-03 04:02:43,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21007 states. [2022-11-03 04:02:45,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21007 to 21007. [2022-11-03 04:02:45,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21007 states, 12777 states have (on average 1.2967050168271113) internal successors, (16568), 13079 states have internal predecessors, (16568), 6780 states have call successors, (6780), 1453 states have call predecessors, (6780), 1447 states have return successors, (6784), 6718 states have call predecessors, (6784), 6772 states have call successors, (6784) [2022-11-03 04:02:45,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21007 states to 21007 states and 30132 transitions. [2022-11-03 04:02:45,124 INFO L78 Accepts]: Start accepts. Automaton has 21007 states and 30132 transitions. Word has length 703 [2022-11-03 04:02:45,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:45,125 INFO L495 AbstractCegarLoop]: Abstraction has 21007 states and 30132 transitions. [2022-11-03 04:02:45,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (82), 3 states have call predecessors, (82), 1 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2022-11-03 04:02:45,125 INFO L276 IsEmpty]: Start isEmpty. Operand 21007 states and 30132 transitions. [2022-11-03 04:02:45,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2022-11-03 04:02:45,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:45,141 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 14, 13, 13, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:45,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 04:02:45,141 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 04:02:45,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:45,141 INFO L85 PathProgramCache]: Analyzing trace with hash 606034401, now seen corresponding path program 1 times [2022-11-03 04:02:45,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:02:45,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676841846] [2022-11-03 04:02:45,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:45,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:02:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:46,003 INFO L134 CoverageAnalysis]: Checked inductivity of 13939 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 13913 trivial. 0 not checked. [2022-11-03 04:02:46,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:02:46,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676841846] [2022-11-03 04:02:46,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676841846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:02:46,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:02:46,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:02:46,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847477874] [2022-11-03 04:02:46,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:02:46,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:02:46,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:02:46,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:02:46,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:02:46,006 INFO L87 Difference]: Start difference. First operand 21007 states and 30132 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (83), 3 states have call predecessors, (83), 1 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) [2022-11-03 04:02:50,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:55,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:57,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 04:03:01,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:01,849 INFO L93 Difference]: Finished difference Result 21033 states and 30165 transitions. [2022-11-03 04:03:01,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:03:01,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (83), 3 states have call predecessors, (83), 1 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) Word has length 708 [2022-11-03 04:03:01,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:01,908 INFO L225 Difference]: With dead ends: 21033 [2022-11-03 04:03:01,909 INFO L226 Difference]: Without dead ends: 21031 [2022-11-03 04:03:01,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:03:01,919 INFO L413 NwaCegarLoop]: 3822 mSDtfsCounter, 4215 mSDsluCounter, 8985 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4219 SdHoareTripleChecker+Valid, 11583 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:01,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4219 Valid, 11583 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1847 Invalid, 1 Unknown, 0 Unchecked, 14.0s Time] [2022-11-03 04:03:01,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21031 states. [2022-11-03 04:03:03,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21031 to 21015. [2022-11-03 04:03:03,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21015 states, 12783 states have (on average 1.296565751388563) internal successors, (16574), 13085 states have internal predecessors, (16574), 6780 states have call successors, (6780), 1455 states have call predecessors, (6780), 1449 states have return successors, (6784), 6718 states have call predecessors, (6784), 6772 states have call successors, (6784) [2022-11-03 04:03:03,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21015 states to 21015 states and 30138 transitions. [2022-11-03 04:03:03,659 INFO L78 Accepts]: Start accepts. Automaton has 21015 states and 30138 transitions. Word has length 708 [2022-11-03 04:03:03,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:03,660 INFO L495 AbstractCegarLoop]: Abstraction has 21015 states and 30138 transitions. [2022-11-03 04:03:03,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (83), 3 states have call predecessors, (83), 1 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) [2022-11-03 04:03:03,661 INFO L276 IsEmpty]: Start isEmpty. Operand 21015 states and 30138 transitions. [2022-11-03 04:03:03,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2022-11-03 04:03:03,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:03,673 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 15, 14, 14, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:03:03,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 04:03:03,673 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 04:03:03,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:03,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1714867608, now seen corresponding path program 1 times [2022-11-03 04:03:03,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:03:03,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291969598] [2022-11-03 04:03:03,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:03,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:03:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:04,651 INFO L134 CoverageAnalysis]: Checked inductivity of 13992 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 13964 trivial. 0 not checked. [2022-11-03 04:03:04,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:03:04,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291969598] [2022-11-03 04:03:04,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291969598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:03:04,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:03:04,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:03:04,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025996517] [2022-11-03 04:03:04,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:03:04,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:03:04,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:03:04,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:03:04,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:03:04,655 INFO L87 Difference]: Start difference. First operand 21015 states and 30138 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (84), 3 states have call predecessors, (84), 1 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2022-11-03 04:03:13,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:03:15,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 04:03:19,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:19,425 INFO L93 Difference]: Finished difference Result 21691 states and 31048 transitions. [2022-11-03 04:03:19,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:03:19,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (84), 3 states have call predecessors, (84), 1 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) Word has length 712 [2022-11-03 04:03:19,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:19,485 INFO L225 Difference]: With dead ends: 21691 [2022-11-03 04:03:19,485 INFO L226 Difference]: Without dead ends: 21687 [2022-11-03 04:03:19,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:03:19,494 INFO L413 NwaCegarLoop]: 3901 mSDtfsCounter, 4203 mSDsluCounter, 9247 mSDsCounter, 0 mSdLazyCounter, 1863 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4206 SdHoareTripleChecker+Valid, 11912 SdHoareTripleChecker+Invalid, 1866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1863 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:19,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4206 Valid, 11912 Invalid, 1866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1863 Invalid, 1 Unknown, 0 Unchecked, 12.8s Time] [2022-11-03 04:03:19,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21687 states. [2022-11-03 04:03:21,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21687 to 21669. [2022-11-03 04:03:21,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21669 states, 13148 states have (on average 1.2940371159111652) internal successors, (17014), 13469 states have internal predecessors, (17014), 7000 states have call successors, (7000), 1525 states have call predecessors, (7000), 1518 states have return successors, (7004), 6938 states have call predecessors, (7004), 6992 states have call successors, (7004) [2022-11-03 04:03:21,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21669 states to 21669 states and 31018 transitions. [2022-11-03 04:03:21,382 INFO L78 Accepts]: Start accepts. Automaton has 21669 states and 31018 transitions. Word has length 712 [2022-11-03 04:03:21,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:21,382 INFO L495 AbstractCegarLoop]: Abstraction has 21669 states and 31018 transitions. [2022-11-03 04:03:21,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (84), 3 states have call predecessors, (84), 1 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2022-11-03 04:03:21,383 INFO L276 IsEmpty]: Start isEmpty. Operand 21669 states and 31018 transitions. [2022-11-03 04:03:21,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2022-11-03 04:03:21,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:21,397 INFO L195 NwaCegarLoop]: trace histogram [61, 58, 58, 58, 58, 58, 58, 16, 15, 15, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:03:21,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 04:03:21,397 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 04:03:21,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:21,398 INFO L85 PathProgramCache]: Analyzing trace with hash -902916191, now seen corresponding path program 1 times [2022-11-03 04:03:21,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:03:21,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164633606] [2022-11-03 04:03:21,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:21,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:03:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:22,325 INFO L134 CoverageAnalysis]: Checked inductivity of 14051 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 14021 trivial. 0 not checked. [2022-11-03 04:03:22,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:03:22,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164633606] [2022-11-03 04:03:22,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164633606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:03:22,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:03:22,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:03:22,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943520994] [2022-11-03 04:03:22,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:03:22,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:03:22,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:03:22,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:03:22,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:03:22,329 INFO L87 Difference]: Start difference. First operand 21669 states and 31018 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) [2022-11-03 04:03:25,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:03:38,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:38,369 INFO L93 Difference]: Finished difference Result 21675 states and 31023 transitions. [2022-11-03 04:03:38,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:03:38,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) Word has length 718 [2022-11-03 04:03:38,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:38,426 INFO L225 Difference]: With dead ends: 21675 [2022-11-03 04:03:38,426 INFO L226 Difference]: Without dead ends: 21489 [2022-11-03 04:03:38,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:03:38,433 INFO L413 NwaCegarLoop]: 3878 mSDtfsCounter, 4062 mSDsluCounter, 9368 mSDsCounter, 0 mSdLazyCounter, 1916 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4065 SdHoareTripleChecker+Valid, 11962 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1916 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:38,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4065 Valid, 11962 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1916 Invalid, 1 Unknown, 0 Unchecked, 13.7s Time] [2022-11-03 04:03:38,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21489 states. [2022-11-03 04:03:40,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21489 to 21489. [2022-11-03 04:03:40,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21489 states, 13050 states have (on average 1.2957088122605365) internal successors, (16909), 13365 states have internal predecessors, (16909), 6952 states have call successors, (6952), 1490 states have call predecessors, (6952), 1484 states have return successors, (6960), 6897 states have call predecessors, (6960), 6948 states have call successors, (6960) [2022-11-03 04:03:40,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21489 states to 21489 states and 30821 transitions. [2022-11-03 04:03:40,724 INFO L78 Accepts]: Start accepts. Automaton has 21489 states and 30821 transitions. Word has length 718 [2022-11-03 04:03:40,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:40,724 INFO L495 AbstractCegarLoop]: Abstraction has 21489 states and 30821 transitions. [2022-11-03 04:03:40,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) [2022-11-03 04:03:40,724 INFO L276 IsEmpty]: Start isEmpty. Operand 21489 states and 30821 transitions. [2022-11-03 04:03:40,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2022-11-03 04:03:40,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:40,751 INFO L195 NwaCegarLoop]: trace histogram [65, 59, 59, 59, 59, 59, 59, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:03:40,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 04:03:40,752 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 04:03:40,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:40,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1006489269, now seen corresponding path program 1 times [2022-11-03 04:03:40,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:03:40,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155768245] [2022-11-03 04:03:40,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:40,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:03:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:41,700 INFO L134 CoverageAnalysis]: Checked inductivity of 14523 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14514 trivial. 0 not checked. [2022-11-03 04:03:41,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:03:41,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155768245] [2022-11-03 04:03:41,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155768245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:03:41,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:03:41,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:03:41,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152393951] [2022-11-03 04:03:41,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:03:41,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:03:41,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:03:41,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:03:41,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:03:41,703 INFO L87 Difference]: Start difference. First operand 21489 states and 30821 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 3 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) [2022-11-03 04:03:51,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 04:03:56,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:56,919 INFO L93 Difference]: Finished difference Result 40038 states and 57417 transitions. [2022-11-03 04:03:56,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:03:56,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 3 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) Word has length 820 [2022-11-03 04:03:56,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:56,981 INFO L225 Difference]: With dead ends: 40038 [2022-11-03 04:03:56,981 INFO L226 Difference]: Without dead ends: 18684 [2022-11-03 04:03:57,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:03:57,061 INFO L413 NwaCegarLoop]: 5547 mSDtfsCounter, 2903 mSDsluCounter, 4304 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2905 SdHoareTripleChecker+Valid, 9267 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:57,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2905 Valid, 9267 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1504 Invalid, 1 Unknown, 0 Unchecked, 13.0s Time] [2022-11-03 04:03:57,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18684 states. [2022-11-03 04:03:59,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18684 to 18668. [2022-11-03 04:03:59,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18668 states, 11289 states have (on average 1.294888829834352) internal successors, (14618), 11565 states have internal predecessors, (14618), 6037 states have call successors, (6037), 1343 states have call predecessors, (6037), 1339 states have return successors, (6047), 5982 states have call predecessors, (6047), 6033 states have call successors, (6047) [2022-11-03 04:03:59,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18668 states to 18668 states and 26702 transitions. [2022-11-03 04:03:59,286 INFO L78 Accepts]: Start accepts. Automaton has 18668 states and 26702 transitions. Word has length 820 [2022-11-03 04:03:59,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:59,287 INFO L495 AbstractCegarLoop]: Abstraction has 18668 states and 26702 transitions. [2022-11-03 04:03:59,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 3 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) [2022-11-03 04:03:59,288 INFO L276 IsEmpty]: Start isEmpty. Operand 18668 states and 26702 transitions. [2022-11-03 04:03:59,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 893 [2022-11-03 04:03:59,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:59,313 INFO L195 NwaCegarLoop]: trace histogram [69, 60, 60, 60, 60, 60, 60, 12, 12, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:03:59,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 04:03:59,313 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 04:03:59,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:59,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1570415728, now seen corresponding path program 1 times [2022-11-03 04:03:59,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:03:59,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949955865] [2022-11-03 04:03:59,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:59,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:03:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 15533 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 15518 trivial. 0 not checked. [2022-11-03 04:04:00,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:04:00,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949955865] [2022-11-03 04:04:00,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949955865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:04:00,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:04:00,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:04:00,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541758756] [2022-11-03 04:04:00,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:04:00,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:04:00,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:04:00,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:04:00,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:04:00,491 INFO L87 Difference]: Start difference. First operand 18668 states and 26702 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) [2022-11-03 04:04:12,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:12,612 INFO L93 Difference]: Finished difference Result 43766 states and 62508 transitions. [2022-11-03 04:04:12,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:04:12,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) Word has length 892 [2022-11-03 04:04:12,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:12,698 INFO L225 Difference]: With dead ends: 43766 [2022-11-03 04:04:12,699 INFO L226 Difference]: Without dead ends: 25888 [2022-11-03 04:04:12,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:04:12,755 INFO L413 NwaCegarLoop]: 6230 mSDtfsCounter, 2917 mSDsluCounter, 4306 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2917 SdHoareTripleChecker+Valid, 9950 SdHoareTripleChecker+Invalid, 1717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:12,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2917 Valid, 9950 Invalid, 1717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-11-03 04:04:12,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25888 states. [2022-11-03 04:04:15,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25888 to 25872. [2022-11-03 04:04:15,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25872 states, 15607 states have (on average 1.2937784327545332) internal successors, (20192), 16005 states have internal predecessors, (20192), 8359 states have call successors, (8359), 1907 states have call predecessors, (8359), 1903 states have return successors, (8373), 8280 states have call predecessors, (8373), 8355 states have call successors, (8373) [2022-11-03 04:04:15,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25872 states to 25872 states and 36924 transitions. [2022-11-03 04:04:15,411 INFO L78 Accepts]: Start accepts. Automaton has 25872 states and 36924 transitions. Word has length 892 [2022-11-03 04:04:15,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:15,411 INFO L495 AbstractCegarLoop]: Abstraction has 25872 states and 36924 transitions. [2022-11-03 04:04:15,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) [2022-11-03 04:04:15,412 INFO L276 IsEmpty]: Start isEmpty. Operand 25872 states and 36924 transitions. [2022-11-03 04:04:15,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2022-11-03 04:04:15,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:15,433 INFO L195 NwaCegarLoop]: trace histogram [71, 60, 60, 60, 60, 60, 60, 16, 16, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:04:15,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-03 04:04:15,433 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 04:04:15,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:15,434 INFO L85 PathProgramCache]: Analyzing trace with hash 888497781, now seen corresponding path program 1 times [2022-11-03 04:04:15,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:04:15,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955367500] [2022-11-03 04:04:15,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:15,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:04:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:17,008 INFO L134 CoverageAnalysis]: Checked inductivity of 16023 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16001 trivial. 0 not checked. [2022-11-03 04:04:17,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:04:17,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955367500] [2022-11-03 04:04:17,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955367500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:04:17,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:04:17,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:04:17,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560909333] [2022-11-03 04:04:17,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:04:17,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:04:17,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:04:17,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:04:17,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:04:17,011 INFO L87 Difference]: Start difference. First operand 25872 states and 36924 transitions. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2022-11-03 04:04:31,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 04:04:49,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:49,747 INFO L93 Difference]: Finished difference Result 83567 states and 125182 transitions. [2022-11-03 04:04:49,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:04:49,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) Word has length 958 [2022-11-03 04:04:49,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:50,094 INFO L225 Difference]: With dead ends: 83567 [2022-11-03 04:04:50,094 INFO L226 Difference]: Without dead ends: 58485 [2022-11-03 04:04:50,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:04:50,162 INFO L413 NwaCegarLoop]: 7775 mSDtfsCounter, 3499 mSDsluCounter, 13656 mSDsCounter, 0 mSdLazyCounter, 2974 mSolverCounterSat, 1003 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4466 SdHoareTripleChecker+Valid, 19662 SdHoareTripleChecker+Invalid, 3978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1003 IncrementalHoareTripleChecker+Valid, 2974 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:50,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4466 Valid, 19662 Invalid, 3978 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1003 Valid, 2974 Invalid, 1 Unknown, 0 Unchecked, 25.1s Time] [2022-11-03 04:04:50,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58485 states. [2022-11-03 04:04:54,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58485 to 25880. [2022-11-03 04:04:54,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25880 states, 15615 states have (on average 1.2936279218699969) internal successors, (20200), 16013 states have internal predecessors, (20200), 8359 states have call successors, (8359), 1907 states have call predecessors, (8359), 1903 states have return successors, (8373), 8280 states have call predecessors, (8373), 8355 states have call successors, (8373) [2022-11-03 04:04:54,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25880 states to 25880 states and 36932 transitions. [2022-11-03 04:04:54,490 INFO L78 Accepts]: Start accepts. Automaton has 25880 states and 36932 transitions. Word has length 958 [2022-11-03 04:04:54,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:54,491 INFO L495 AbstractCegarLoop]: Abstraction has 25880 states and 36932 transitions. [2022-11-03 04:04:54,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2022-11-03 04:04:54,491 INFO L276 IsEmpty]: Start isEmpty. Operand 25880 states and 36932 transitions. [2022-11-03 04:04:54,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2022-11-03 04:04:54,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:54,526 INFO L195 NwaCegarLoop]: trace histogram [71, 60, 60, 60, 60, 60, 60, 16, 16, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:04:54,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-03 04:04:54,527 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 04:04:54,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:54,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1500509256, now seen corresponding path program 1 times [2022-11-03 04:04:54,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:04:54,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012666116] [2022-11-03 04:04:54,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:54,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:04:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:55,543 INFO L134 CoverageAnalysis]: Checked inductivity of 16025 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16001 trivial. 0 not checked. [2022-11-03 04:04:55,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:04:55,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012666116] [2022-11-03 04:04:55,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012666116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:04:55,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:04:55,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:04:55,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211288493] [2022-11-03 04:04:55,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:04:55,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:04:55,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:04:55,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:04:55,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:04:55,547 INFO L87 Difference]: Start difference. First operand 25880 states and 36932 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 3 states have call successors, (111), 2 states have call predecessors, (111), 1 states have return successors, (110), 3 states have call predecessors, (110), 3 states have call successors, (110) [2022-11-03 04:04:59,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:05:15,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:15,290 INFO L93 Difference]: Finished difference Result 58223 states and 83409 transitions. [2022-11-03 04:05:15,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:05:15,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 3 states have call successors, (111), 2 states have call predecessors, (111), 1 states have return successors, (110), 3 states have call predecessors, (110), 3 states have call successors, (110) Word has length 965 [2022-11-03 04:05:15,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:15,403 INFO L225 Difference]: With dead ends: 58223 [2022-11-03 04:05:15,403 INFO L226 Difference]: Without dead ends: 33133 [2022-11-03 04:05:15,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:05:15,451 INFO L413 NwaCegarLoop]: 6280 mSDtfsCounter, 2957 mSDsluCounter, 4269 mSDsCounter, 0 mSdLazyCounter, 1658 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2960 SdHoareTripleChecker+Valid, 9997 SdHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1658 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:15,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2960 Valid, 9997 Invalid, 1663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1658 Invalid, 1 Unknown, 0 Unchecked, 14.0s Time] [2022-11-03 04:05:15,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33133 states. [2022-11-03 04:05:20,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33133 to 33119. [2022-11-03 04:05:20,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33119 states, 20141 states have (on average 1.3065389007497146) internal successors, (26315), 20615 states have internal predecessors, (26315), 10650 states have call successors, (10650), 2335 states have call predecessors, (10650), 2325 states have return successors, (10666), 10541 states have call predecessors, (10666), 10646 states have call successors, (10666) [2022-11-03 04:05:20,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33119 states to 33119 states and 47631 transitions. [2022-11-03 04:05:20,140 INFO L78 Accepts]: Start accepts. Automaton has 33119 states and 47631 transitions. Word has length 965 [2022-11-03 04:05:20,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:20,141 INFO L495 AbstractCegarLoop]: Abstraction has 33119 states and 47631 transitions. [2022-11-03 04:05:20,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 3 states have call successors, (111), 2 states have call predecessors, (111), 1 states have return successors, (110), 3 states have call predecessors, (110), 3 states have call successors, (110) [2022-11-03 04:05:20,142 INFO L276 IsEmpty]: Start isEmpty. Operand 33119 states and 47631 transitions. [2022-11-03 04:05:20,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 988 [2022-11-03 04:05:20,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:20,165 INFO L195 NwaCegarLoop]: trace histogram [69, 60, 60, 60, 60, 60, 60, 13, 13, 6, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:20,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-03 04:05:20,165 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 04:05:20,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:20,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1596683704, now seen corresponding path program 1 times [2022-11-03 04:05:20,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:05:20,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569145832] [2022-11-03 04:05:20,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:20,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:05:20,499 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 04:05:20,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1327139754] [2022-11-03 04:05:20,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:20,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:05:20,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4af0568-a2f0-4073-a2ae-934c71fce24e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:05:20,511 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4af0568-a2f0-4073-a2ae-934c71fce24e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:05:20,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4af0568-a2f0-4073-a2ae-934c71fce24e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process