./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_804fcd65-cbf0-48f0-aaab-03b41ef2568a/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_804fcd65-cbf0-48f0-aaab-03b41ef2568a/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_804fcd65-cbf0-48f0-aaab-03b41ef2568a/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_804fcd65-cbf0-48f0-aaab-03b41ef2568a/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_804fcd65-cbf0-48f0-aaab-03b41ef2568a/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_804fcd65-cbf0-48f0-aaab-03b41ef2568a/bin/utaipan-g80aRyZoba --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 6b81be647295ba0700d02fa1d093d31284b02ba80deefc4d677fbd988693200b --- 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-b5237d8 [2022-11-22 00:31:37,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:31:37,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:31:37,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:31:37,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:31:37,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:31:37,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:31:37,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:31:37,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:31:37,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:31:37,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:31:37,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:31:37,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:31:37,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:31:37,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:31:37,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:31:37,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:31:37,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:31:37,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:31:37,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:31:37,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:31:37,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:31:37,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:31:37,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:31:37,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:31:37,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:31:37,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:31:37,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:31:37,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:31:37,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:31:37,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:31:37,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:31:37,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:31:37,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:31:37,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:31:37,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:31:37,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:31:37,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:31:37,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:31:37,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:31:37,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:31:37,590 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_804fcd65-cbf0-48f0-aaab-03b41ef2568a/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 00:31:37,633 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:31:37,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:31:37,634 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:31:37,634 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:31:37,635 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:31:37,635 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:31:37,635 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:31:37,636 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:31:37,636 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:31:37,636 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:31:37,637 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:31:37,638 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:31:37,638 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:31:37,638 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:31:37,638 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:31:37,639 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:31:37,639 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:31:37,639 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:31:37,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:31:37,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:31:37,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:31:37,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:31:37,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:31:37,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:31:37,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:31:37,642 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:31:37,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:31:37,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:31:37,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:31:37,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:31:37,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:31:37,644 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:31:37,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:31:37,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:31:37,644 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:31:37,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:31:37,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:31:37,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:31:37,645 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_804fcd65-cbf0-48f0-aaab-03b41ef2568a/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_804fcd65-cbf0-48f0-aaab-03b41ef2568a/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b81be647295ba0700d02fa1d093d31284b02ba80deefc4d677fbd988693200b [2022-11-22 00:31:37,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:31:37,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:31:37,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:31:37,953 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:31:37,953 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:31:37,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_804fcd65-cbf0-48f0-aaab-03b41ef2568a/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2022-11-22 00:31:40,867 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:31:41,593 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:31:41,594 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_804fcd65-cbf0-48f0-aaab-03b41ef2568a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2022-11-22 00:31:41,646 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_804fcd65-cbf0-48f0-aaab-03b41ef2568a/bin/utaipan-g80aRyZoba/data/ee0971281/d88eac7890434b8098b7de9bd8ae3f5b/FLAG79e45c4bf [2022-11-22 00:31:41,668 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_804fcd65-cbf0-48f0-aaab-03b41ef2568a/bin/utaipan-g80aRyZoba/data/ee0971281/d88eac7890434b8098b7de9bd8ae3f5b [2022-11-22 00:31:41,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:31:41,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:31:41,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:31:41,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:31:41,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:31:41,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:31:41" (1/1) ... [2022-11-22 00:31:41,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a1fe2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:41, skipping insertion in model container [2022-11-22 00:31:41,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:31:41" (1/1) ... [2022-11-22 00:31:41,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:31:41,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:31:44,501 WARN L237 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_804fcd65-cbf0-48f0-aaab-03b41ef2568a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315060,315073] [2022-11-22 00:31:44,506 WARN L237 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_804fcd65-cbf0-48f0-aaab-03b41ef2568a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315229,315242] [2022-11-22 00:31:44,507 WARN L237 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_804fcd65-cbf0-48f0-aaab-03b41ef2568a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315396,315409] [2022-11-22 00:31:44,507 WARN L237 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_804fcd65-cbf0-48f0-aaab-03b41ef2568a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315564,315577] [2022-11-22 00:31:44,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:31:44,574 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:31:44,947 WARN L237 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_804fcd65-cbf0-48f0-aaab-03b41ef2568a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315060,315073] [2022-11-22 00:31:44,947 WARN L237 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_804fcd65-cbf0-48f0-aaab-03b41ef2568a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315229,315242] [2022-11-22 00:31:44,948 WARN L237 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_804fcd65-cbf0-48f0-aaab-03b41ef2568a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315396,315409] [2022-11-22 00:31:44,949 WARN L237 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_804fcd65-cbf0-48f0-aaab-03b41ef2568a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315564,315577] [2022-11-22 00:31:44,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:31:45,174 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:31:45,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:45 WrapperNode [2022-11-22 00:31:45,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:31:45,176 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:31:45,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:31:45,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:31:45,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:45" (1/1) ... [2022-11-22 00:31:45,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:45" (1/1) ... [2022-11-22 00:31:45,436 INFO L138 Inliner]: procedures = 370, calls = 2251, calls flagged for inlining = 172, calls inlined = 152, statements flattened = 4153 [2022-11-22 00:31:45,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:31:45,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:31:45,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:31:45,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:31:45,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:45" (1/1) ... [2022-11-22 00:31:45,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:45" (1/1) ... [2022-11-22 00:31:45,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:45" (1/1) ... [2022-11-22 00:31:45,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:45" (1/1) ... [2022-11-22 00:31:45,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:45" (1/1) ... [2022-11-22 00:31:45,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:45" (1/1) ... [2022-11-22 00:31:45,659 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:45" (1/1) ... [2022-11-22 00:31:45,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:45" (1/1) ... [2022-11-22 00:31:45,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:31:45,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:31:45,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:31:45,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:31:45,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:45" (1/1) ... [2022-11-22 00:31:45,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:31:45,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_804fcd65-cbf0-48f0-aaab-03b41ef2568a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:31:45,755 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_804fcd65-cbf0-48f0-aaab-03b41ef2568a/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:31:45,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_804fcd65-cbf0-48f0-aaab-03b41ef2568a/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:31:45,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_page_lock_of_ei_device [2022-11-22 00:31:45,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_page_lock_of_ei_device [2022-11-22 00:31:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 00:31:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 00:31:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_detach [2022-11-22 00:31:45,803 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_detach [2022-11-22 00:31:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 00:31:45,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 00:31:45,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 00:31:45,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 00:31:45,804 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 00:31:45,804 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 00:31:45,804 INFO L130 BoogieDeclarations]: Found specification of procedure AX88190_init [2022-11-22 00:31:45,804 INFO L138 BoogieDeclarations]: Found implementation of procedure AX88190_init [2022-11-22 00:31:45,804 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2022-11-22 00:31:45,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2022-11-22 00:31:45,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 00:31:45,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 00:31:45,805 INFO L130 BoogieDeclarations]: Found specification of procedure slow_down_io [2022-11-22 00:31:45,806 INFO L138 BoogieDeclarations]: Found implementation of procedure slow_down_io [2022-11-22 00:31:45,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-22 00:31:45,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-22 00:31:45,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_70 [2022-11-22 00:31:45,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_70 [2022-11-22 00:31:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 00:31:45,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 00:31:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure ei_receive [2022-11-22 00:31:45,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_receive [2022-11-22 00:31:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 00:31:45,809 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 00:31:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_axnet_cs_driver_exit_14_2 [2022-11-22 00:31:45,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_axnet_cs_driver_exit_14_2 [2022-11-22 00:31:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 00:31:45,809 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 00:31:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_release [2022-11-22 00:31:45,810 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_release [2022-11-22 00:31:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_write_config_byte [2022-11-22 00:31:45,810 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_write_config_byte [2022-11-22 00:31:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure insw [2022-11-22 00:31:45,810 INFO L138 BoogieDeclarations]: Found implementation of procedure insw [2022-11-22 00:31:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure PRIV [2022-11-22 00:31:45,811 INFO L138 BoogieDeclarations]: Found implementation of procedure PRIV [2022-11-22 00:31:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-22 00:31:45,812 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-22 00:31:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:31:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 00:31:45,812 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 00:31:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 00:31:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 00:31:45,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 00:31:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-22 00:31:45,814 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-22 00:31:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2022-11-22 00:31:45,814 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2022-11-22 00:31:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 00:31:45,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 00:31:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure NS8390_trigger_send [2022-11-22 00:31:45,815 INFO L138 BoogieDeclarations]: Found implementation of procedure NS8390_trigger_send [2022-11-22 00:31:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure ei_tx_intr [2022-11-22 00:31:45,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_tx_intr [2022-11-22 00:31:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:31:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 00:31:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 00:31:45,816 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 00:31:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-22 00:31:45,816 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-22 00:31:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 00:31:45,817 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 00:31:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 00:31:45,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 00:31:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 00:31:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2022-11-22 00:31:45,819 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2022-11-22 00:31:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 00:31:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 00:31:45,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 00:31:45,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:31:45,820 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 00:31:45,820 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 00:31:45,821 INFO L130 BoogieDeclarations]: Found specification of procedure ei_irq_wrapper [2022-11-22 00:31:45,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_irq_wrapper [2022-11-22 00:31:45,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-22 00:31:45,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-22 00:31:45,821 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 00:31:45,821 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 00:31:45,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 00:31:45,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 00:31:45,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:31:45,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 00:31:45,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 00:31:45,823 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_reset_8390 [2022-11-22 00:31:45,823 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_reset_8390 [2022-11-22 00:31:45,823 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_tx_timeout [2022-11-22 00:31:45,824 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_tx_timeout [2022-11-22 00:31:45,824 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 00:31:45,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 00:31:45,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 00:31:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2022-11-22 00:31:45,825 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2022-11-22 00:31:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 00:31:45,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 00:31:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_cs_driver_exit [2022-11-22 00:31:45,825 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_cs_driver_exit [2022-11-22 00:31:45,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:31:45,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 00:31:45,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 00:31:45,830 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 00:31:45,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 00:31:45,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 00:31:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 00:31:45,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 00:31:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 00:31:45,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 00:31:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-22 00:31:45,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-22 00:31:45,838 INFO L130 BoogieDeclarations]: Found specification of procedure outb_p [2022-11-22 00:31:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure outb_p [2022-11-22 00:31:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-22 00:31:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-22 00:31:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure do_set_multicast_list [2022-11-22 00:31:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure do_set_multicast_list [2022-11-22 00:31:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:31:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 00:31:45,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 00:31:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-22 00:31:45,840 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-22 00:31:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:31:45,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:31:46,601 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:31:46,603 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:31:46,951 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 00:31:52,824 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 00:31:52,986 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:31:53,852 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:31:53,852 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 00:31:53,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:31:53 BoogieIcfgContainer [2022-11-22 00:31:53,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:31:53,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:31:53,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:31:53,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:31:53,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:31:41" (1/3) ... [2022-11-22 00:31:53,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed3cabd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:31:53, skipping insertion in model container [2022-11-22 00:31:53,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:45" (2/3) ... [2022-11-22 00:31:53,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed3cabd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:31:53, skipping insertion in model container [2022-11-22 00:31:53,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:31:53" (3/3) ... [2022-11-22 00:31:53,870 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2022-11-22 00:31:53,891 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:31:53,891 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 00:31:53,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:31:54,004 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;@12a2b91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:31:54,004 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 00:31:54,012 INFO L276 IsEmpty]: Start isEmpty. Operand has 953 states, 528 states have (on average 1.303030303030303) internal successors, (688), 552 states have internal predecessors, (688), 368 states have call successors, (368), 56 states have call predecessors, (368), 55 states have return successors, (362), 354 states have call predecessors, (362), 362 states have call successors, (362) [2022-11-22 00:31:54,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-22 00:31:54,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:54,029 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:54,030 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:31:54,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:54,035 INFO L85 PathProgramCache]: Analyzing trace with hash -407081453, now seen corresponding path program 1 times [2022-11-22 00:31:54,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:54,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534287462] [2022-11-22 00:31:54,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:54,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:54,983 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-22 00:31:54,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:54,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534287462] [2022-11-22 00:31:54,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534287462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:54,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:54,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:31:54,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430801939] [2022-11-22 00:31:54,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:54,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:31:54,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:55,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:31:55,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:31:55,046 INFO L87 Difference]: Start difference. First operand has 953 states, 528 states have (on average 1.303030303030303) internal successors, (688), 552 states have internal predecessors, (688), 368 states have call successors, (368), 56 states have call predecessors, (368), 55 states have return successors, (362), 354 states have call predecessors, (362), 362 states have call successors, (362) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-22 00:31:58,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:58,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:58,684 INFO L93 Difference]: Finished difference Result 2749 states and 4166 transitions. [2022-11-22 00:31:58,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:31:58,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2022-11-22 00:31:58,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:58,741 INFO L225 Difference]: With dead ends: 2749 [2022-11-22 00:31:58,741 INFO L226 Difference]: Without dead ends: 1801 [2022-11-22 00:31:58,754 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 [2022-11-22 00:31:58,756 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 1301 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:58,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1301 Valid, 2732 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-22 00:31:58,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2022-11-22 00:31:59,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1797. [2022-11-22 00:31:59,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1005 states have (on average 1.2935323383084578) internal successors, (1300), 1050 states have internal predecessors, (1300), 683 states have call successors, (683), 107 states have call predecessors, (683), 106 states have return successors, (679), 663 states have call predecessors, (679), 679 states have call successors, (679) [2022-11-22 00:31:59,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2662 transitions. [2022-11-22 00:31:59,065 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2662 transitions. Word has length 91 [2022-11-22 00:31:59,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:59,067 INFO L495 AbstractCegarLoop]: Abstraction has 1797 states and 2662 transitions. [2022-11-22 00:31:59,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-22 00:31:59,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2662 transitions. [2022-11-22 00:31:59,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-22 00:31:59,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:59,082 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:59,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:31:59,083 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:31:59,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:59,084 INFO L85 PathProgramCache]: Analyzing trace with hash -864878540, now seen corresponding path program 1 times [2022-11-22 00:31:59,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:59,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311362854] [2022-11-22 00:31:59,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:59,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-22 00:31:59,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:59,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311362854] [2022-11-22 00:31:59,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311362854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:59,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:59,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:31:59,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594399294] [2022-11-22 00:31:59,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:59,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:31:59,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:59,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:31:59,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:31:59,527 INFO L87 Difference]: Start difference. First operand 1797 states and 2662 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-22 00:32:02,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:02,391 INFO L93 Difference]: Finished difference Result 5055 states and 7458 transitions. [2022-11-22 00:32:02,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:32:02,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2022-11-22 00:32:02,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:02,414 INFO L225 Difference]: With dead ends: 5055 [2022-11-22 00:32:02,415 INFO L226 Difference]: Without dead ends: 3273 [2022-11-22 00:32:02,424 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 [2022-11-22 00:32:02,426 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 1115 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 2720 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:02,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 2720 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-22 00:32:02,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2022-11-22 00:32:02,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 3242. [2022-11-22 00:32:02,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3242 states, 1810 states have (on average 1.2834254143646409) internal successors, (2323), 1892 states have internal predecessors, (2323), 1222 states have call successors, (1222), 206 states have call predecessors, (1222), 207 states have return successors, (1224), 1189 states have call predecessors, (1224), 1218 states have call successors, (1224) [2022-11-22 00:32:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3242 states to 3242 states and 4769 transitions. [2022-11-22 00:32:02,653 INFO L78 Accepts]: Start accepts. Automaton has 3242 states and 4769 transitions. Word has length 99 [2022-11-22 00:32:02,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:02,653 INFO L495 AbstractCegarLoop]: Abstraction has 3242 states and 4769 transitions. [2022-11-22 00:32:02,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-22 00:32:02,654 INFO L276 IsEmpty]: Start isEmpty. Operand 3242 states and 4769 transitions. [2022-11-22 00:32:02,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-22 00:32:02,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:02,661 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 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] [2022-11-22 00:32:02,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:32:02,662 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:32:02,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:02,663 INFO L85 PathProgramCache]: Analyzing trace with hash -126244400, now seen corresponding path program 1 times [2022-11-22 00:32:02,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:02,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245319530] [2022-11-22 00:32:02,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:02,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:03,129 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-22 00:32:03,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:03,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245319530] [2022-11-22 00:32:03,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245319530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:03,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:03,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:32:03,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337922988] [2022-11-22 00:32:03,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:03,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:32:03,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:03,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:32:03,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:32:03,134 INFO L87 Difference]: Start difference. First operand 3242 states and 4769 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-22 00:32:05,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:06,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:07,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:07,129 INFO L93 Difference]: Finished difference Result 8940 states and 13097 transitions. [2022-11-22 00:32:07,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:32:07,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 103 [2022-11-22 00:32:07,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:07,172 INFO L225 Difference]: With dead ends: 8940 [2022-11-22 00:32:07,173 INFO L226 Difference]: Without dead ends: 5713 [2022-11-22 00:32:07,188 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 [2022-11-22 00:32:07,189 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 1114 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:07,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 2684 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-22 00:32:07,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5713 states. [2022-11-22 00:32:07,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5713 to 5680. [2022-11-22 00:32:07,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5680 states, 3184 states have (on average 1.2792085427135678) internal successors, (4073), 3322 states have internal predecessors, (4073), 2108 states have call successors, (2108), 388 states have call predecessors, (2108), 385 states have return successors, (2116), 2035 states have call predecessors, (2116), 2104 states have call successors, (2116) [2022-11-22 00:32:07,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5680 states to 5680 states and 8297 transitions. [2022-11-22 00:32:07,626 INFO L78 Accepts]: Start accepts. Automaton has 5680 states and 8297 transitions. Word has length 103 [2022-11-22 00:32:07,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:07,627 INFO L495 AbstractCegarLoop]: Abstraction has 5680 states and 8297 transitions. [2022-11-22 00:32:07,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-22 00:32:07,627 INFO L276 IsEmpty]: Start isEmpty. Operand 5680 states and 8297 transitions. [2022-11-22 00:32:07,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-22 00:32:07,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:07,629 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 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] [2022-11-22 00:32:07,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:32:07,630 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:32:07,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:07,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1612790898, now seen corresponding path program 1 times [2022-11-22 00:32:07,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:07,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689897858] [2022-11-22 00:32:07,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:07,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:08,028 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-11-22 00:32:08,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:08,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689897858] [2022-11-22 00:32:08,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689897858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:08,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:08,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:32:08,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982016454] [2022-11-22 00:32:08,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:08,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:32:08,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:08,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:32:08,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:32:08,032 INFO L87 Difference]: Start difference. First operand 5680 states and 8297 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 00:32:10,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:10,106 INFO L93 Difference]: Finished difference Result 10086 states and 14720 transitions. [2022-11-22 00:32:10,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:32:10,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 118 [2022-11-22 00:32:10,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:10,139 INFO L225 Difference]: With dead ends: 10086 [2022-11-22 00:32:10,139 INFO L226 Difference]: Without dead ends: 4421 [2022-11-22 00:32:10,167 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 [2022-11-22 00:32:10,169 INFO L413 NwaCegarLoop]: 1651 mSDtfsCounter, 1260 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 2279 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:10,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1260 Valid, 2279 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-22 00:32:10,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2022-11-22 00:32:10,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 4382. [2022-11-22 00:32:10,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 2512 states have (on average 1.273487261146497) internal successors, (3199), 2656 states have internal predecessors, (3199), 1551 states have call successors, (1551), 355 states have call predecessors, (1551), 316 states have return successors, (1583), 1405 states have call predecessors, (1583), 1547 states have call successors, (1583) [2022-11-22 00:32:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 6333 transitions. [2022-11-22 00:32:10,511 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 6333 transitions. Word has length 118 [2022-11-22 00:32:10,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:10,511 INFO L495 AbstractCegarLoop]: Abstraction has 4382 states and 6333 transitions. [2022-11-22 00:32:10,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 00:32:10,513 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 6333 transitions. [2022-11-22 00:32:10,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-22 00:32:10,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:10,515 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 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] [2022-11-22 00:32:10,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:32:10,515 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:32:10,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:10,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2099420447, now seen corresponding path program 1 times [2022-11-22 00:32:10,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:10,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345894880] [2022-11-22 00:32:10,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:10,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-11-22 00:32:11,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:11,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345894880] [2022-11-22 00:32:11,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345894880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:11,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:11,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:32:11,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498524581] [2022-11-22 00:32:11,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:11,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:11,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:11,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:11,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:11,255 INFO L87 Difference]: Start difference. First operand 4382 states and 6333 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-22 00:32:13,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:14,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:15,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:15,838 INFO L93 Difference]: Finished difference Result 4388 states and 6338 transitions. [2022-11-22 00:32:15,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:32:15,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2022-11-22 00:32:15,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:15,866 INFO L225 Difference]: With dead ends: 4388 [2022-11-22 00:32:15,867 INFO L226 Difference]: Without dead ends: 4386 [2022-11-22 00:32:15,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:32:15,871 INFO L413 NwaCegarLoop]: 1198 mSDtfsCounter, 1344 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 3581 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:15,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1355 Valid, 3581 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-22 00:32:15,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4386 states. [2022-11-22 00:32:16,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4386 to 4386. [2022-11-22 00:32:16,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 2515 states have (on average 1.2731610337972168) internal successors, (3202), 2659 states have internal predecessors, (3202), 1551 states have call successors, (1551), 356 states have call predecessors, (1551), 317 states have return successors, (1583), 1405 states have call predecessors, (1583), 1547 states have call successors, (1583) [2022-11-22 00:32:16,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 6336 transitions. [2022-11-22 00:32:16,261 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 6336 transitions. Word has length 133 [2022-11-22 00:32:16,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:16,267 INFO L495 AbstractCegarLoop]: Abstraction has 4386 states and 6336 transitions. [2022-11-22 00:32:16,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-22 00:32:16,267 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 6336 transitions. [2022-11-22 00:32:16,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-22 00:32:16,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:16,273 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 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] [2022-11-22 00:32:16,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:32:16,274 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:32:16,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:16,275 INFO L85 PathProgramCache]: Analyzing trace with hash -53366470, now seen corresponding path program 1 times [2022-11-22 00:32:16,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:16,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306593641] [2022-11-22 00:32:16,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:16,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:16,872 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-11-22 00:32:16,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:16,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306593641] [2022-11-22 00:32:16,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306593641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:16,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:16,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:32:16,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769475995] [2022-11-22 00:32:16,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:16,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:16,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:16,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:16,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:16,874 INFO L87 Difference]: Start difference. First operand 4386 states and 6336 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 00:32:21,054 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 [] [2022-11-22 00:32:21,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:21,519 INFO L93 Difference]: Finished difference Result 4392 states and 6341 transitions. [2022-11-22 00:32:21,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:32:21,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 138 [2022-11-22 00:32:21,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:21,543 INFO L225 Difference]: With dead ends: 4392 [2022-11-22 00:32:21,544 INFO L226 Difference]: Without dead ends: 4390 [2022-11-22 00:32:21,546 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 [2022-11-22 00:32:21,546 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1339 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:21,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-22 00:32:21,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4390 states. [2022-11-22 00:32:21,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4390 to 4390. [2022-11-22 00:32:21,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4390 states, 2518 states have (on average 1.272835583796664) internal successors, (3205), 2662 states have internal predecessors, (3205), 1551 states have call successors, (1551), 357 states have call predecessors, (1551), 318 states have return successors, (1583), 1405 states have call predecessors, (1583), 1547 states have call successors, (1583) [2022-11-22 00:32:21,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4390 states to 4390 states and 6339 transitions. [2022-11-22 00:32:21,860 INFO L78 Accepts]: Start accepts. Automaton has 4390 states and 6339 transitions. Word has length 138 [2022-11-22 00:32:21,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:21,860 INFO L495 AbstractCegarLoop]: Abstraction has 4390 states and 6339 transitions. [2022-11-22 00:32:21,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 00:32:21,861 INFO L276 IsEmpty]: Start isEmpty. Operand 4390 states and 6339 transitions. [2022-11-22 00:32:21,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-22 00:32:21,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:21,864 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:21,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:32:21,864 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:32:21,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:21,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1297779265, now seen corresponding path program 1 times [2022-11-22 00:32:21,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:21,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423262604] [2022-11-22 00:32:21,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:21,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:22,503 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-11-22 00:32:22,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:22,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423262604] [2022-11-22 00:32:22,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423262604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:22,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:22,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:32:22,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287013781] [2022-11-22 00:32:22,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:22,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:22,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:22,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:22,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:22,507 INFO L87 Difference]: Start difference. First operand 4390 states and 6339 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 00:32:26,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:27,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:27,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:27,778 INFO L93 Difference]: Finished difference Result 4396 states and 6344 transitions. [2022-11-22 00:32:27,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:32:27,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 143 [2022-11-22 00:32:27,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:27,805 INFO L225 Difference]: With dead ends: 4396 [2022-11-22 00:32:27,805 INFO L226 Difference]: Without dead ends: 4394 [2022-11-22 00:32:27,809 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 [2022-11-22 00:32:27,809 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1339 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:27,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1348 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-22 00:32:27,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4394 states. [2022-11-22 00:32:28,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4394 to 4394. [2022-11-22 00:32:28,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4394 states, 2521 states have (on average 1.2725109083696946) internal successors, (3208), 2665 states have internal predecessors, (3208), 1551 states have call successors, (1551), 358 states have call predecessors, (1551), 319 states have return successors, (1583), 1405 states have call predecessors, (1583), 1547 states have call successors, (1583) [2022-11-22 00:32:28,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4394 states to 4394 states and 6342 transitions. [2022-11-22 00:32:28,208 INFO L78 Accepts]: Start accepts. Automaton has 4394 states and 6342 transitions. Word has length 143 [2022-11-22 00:32:28,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:28,210 INFO L495 AbstractCegarLoop]: Abstraction has 4394 states and 6342 transitions. [2022-11-22 00:32:28,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 00:32:28,210 INFO L276 IsEmpty]: Start isEmpty. Operand 4394 states and 6342 transitions. [2022-11-22 00:32:28,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-22 00:32:28,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:28,213 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 5, 5, 4, 3, 3, 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] [2022-11-22 00:32:28,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:32:28,214 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:32:28,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:28,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1251737035, now seen corresponding path program 1 times [2022-11-22 00:32:28,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:28,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110999978] [2022-11-22 00:32:28,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:28,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:28,763 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-11-22 00:32:28,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:28,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110999978] [2022-11-22 00:32:28,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110999978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:28,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:28,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:32:28,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478389662] [2022-11-22 00:32:28,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:28,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:28,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:28,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:28,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:28,765 INFO L87 Difference]: Start difference. First operand 4394 states and 6342 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 00:32:30,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:32,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:33,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:33,000 INFO L93 Difference]: Finished difference Result 4400 states and 6347 transitions. [2022-11-22 00:32:33,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:32:33,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 155 [2022-11-22 00:32:33,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:33,021 INFO L225 Difference]: With dead ends: 4400 [2022-11-22 00:32:33,022 INFO L226 Difference]: Without dead ends: 4398 [2022-11-22 00:32:33,024 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 [2022-11-22 00:32:33,025 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1338 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:33,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1346 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-22 00:32:33,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4398 states. [2022-11-22 00:32:33,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4398 to 4398. [2022-11-22 00:32:33,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4398 states, 2524 states have (on average 1.2721870047543582) internal successors, (3211), 2668 states have internal predecessors, (3211), 1551 states have call successors, (1551), 359 states have call predecessors, (1551), 320 states have return successors, (1583), 1405 states have call predecessors, (1583), 1547 states have call successors, (1583) [2022-11-22 00:32:33,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4398 states to 4398 states and 6345 transitions. [2022-11-22 00:32:33,378 INFO L78 Accepts]: Start accepts. Automaton has 4398 states and 6345 transitions. Word has length 155 [2022-11-22 00:32:33,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:33,381 INFO L495 AbstractCegarLoop]: Abstraction has 4398 states and 6345 transitions. [2022-11-22 00:32:33,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 00:32:33,381 INFO L276 IsEmpty]: Start isEmpty. Operand 4398 states and 6345 transitions. [2022-11-22 00:32:33,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-22 00:32:33,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:33,384 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 5, 5, 5, 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] [2022-11-22 00:32:33,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 00:32:33,385 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:32:33,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:33,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1346686374, now seen corresponding path program 1 times [2022-11-22 00:32:33,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:33,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528125739] [2022-11-22 00:32:33,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:33,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:33,970 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2022-11-22 00:32:33,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:33,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528125739] [2022-11-22 00:32:33,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528125739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:33,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:33,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:32:33,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853795876] [2022-11-22 00:32:33,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:33,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:33,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:33,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:33,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:33,973 INFO L87 Difference]: Start difference. First operand 4398 states and 6345 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 00:32:36,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:37,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:38,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:38,690 INFO L93 Difference]: Finished difference Result 4404 states and 6350 transitions. [2022-11-22 00:32:38,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:32:38,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 160 [2022-11-22 00:32:38,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:38,709 INFO L225 Difference]: With dead ends: 4404 [2022-11-22 00:32:38,709 INFO L226 Difference]: Without dead ends: 4402 [2022-11-22 00:32:38,711 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 [2022-11-22 00:32:38,711 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1338 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:38,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-22 00:32:38,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4402 states. [2022-11-22 00:32:39,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4402 to 4402. [2022-11-22 00:32:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4402 states, 2527 states have (on average 1.2718638702018203) internal successors, (3214), 2671 states have internal predecessors, (3214), 1551 states have call successors, (1551), 360 states have call predecessors, (1551), 321 states have return successors, (1583), 1405 states have call predecessors, (1583), 1547 states have call successors, (1583) [2022-11-22 00:32:39,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 6348 transitions. [2022-11-22 00:32:39,207 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 6348 transitions. Word has length 160 [2022-11-22 00:32:39,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:39,207 INFO L495 AbstractCegarLoop]: Abstraction has 4402 states and 6348 transitions. [2022-11-22 00:32:39,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 00:32:39,208 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 6348 transitions. [2022-11-22 00:32:39,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-22 00:32:39,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:39,211 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 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] [2022-11-22 00:32:39,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 00:32:39,212 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:32:39,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:39,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1441032043, now seen corresponding path program 1 times [2022-11-22 00:32:39,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:39,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474603324] [2022-11-22 00:32:39,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:39,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:39,702 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-11-22 00:32:39,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:39,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474603324] [2022-11-22 00:32:39,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474603324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:39,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:39,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:32:39,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671757005] [2022-11-22 00:32:39,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:39,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:39,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:39,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:39,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:39,705 INFO L87 Difference]: Start difference. First operand 4402 states and 6348 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 00:32:41,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:43,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:43,722 INFO L93 Difference]: Finished difference Result 4408 states and 6353 transitions. [2022-11-22 00:32:43,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:32:43,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 165 [2022-11-22 00:32:43,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:43,742 INFO L225 Difference]: With dead ends: 4408 [2022-11-22 00:32:43,742 INFO L226 Difference]: Without dead ends: 4406 [2022-11-22 00:32:43,745 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 [2022-11-22 00:32:43,746 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1338 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:43,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-22 00:32:43,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4406 states. [2022-11-22 00:32:44,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4406 to 4406. [2022-11-22 00:32:44,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4406 states, 2530 states have (on average 1.2715415019762846) internal successors, (3217), 2674 states have internal predecessors, (3217), 1551 states have call successors, (1551), 361 states have call predecessors, (1551), 322 states have return successors, (1583), 1405 states have call predecessors, (1583), 1547 states have call successors, (1583) [2022-11-22 00:32:44,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 6351 transitions. [2022-11-22 00:32:44,147 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 6351 transitions. Word has length 165 [2022-11-22 00:32:44,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:44,148 INFO L495 AbstractCegarLoop]: Abstraction has 4406 states and 6351 transitions. [2022-11-22 00:32:44,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 00:32:44,148 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 6351 transitions. [2022-11-22 00:32:44,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-22 00:32:44,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:44,153 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 6, 6, 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] [2022-11-22 00:32:44,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 00:32:44,153 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:32:44,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:44,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1063096354, now seen corresponding path program 1 times [2022-11-22 00:32:44,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:44,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314261115] [2022-11-22 00:32:44,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:44,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-11-22 00:32:44,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:44,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314261115] [2022-11-22 00:32:44,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314261115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:44,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:44,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:32:44,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127654564] [2022-11-22 00:32:44,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:44,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:32:44,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:44,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:32:44,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:32:44,469 INFO L87 Difference]: Start difference. First operand 4406 states and 6351 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-22 00:32:48,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:48,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:48,574 INFO L93 Difference]: Finished difference Result 9705 states and 14001 transitions. [2022-11-22 00:32:48,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:32:48,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 165 [2022-11-22 00:32:48,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:48,607 INFO L225 Difference]: With dead ends: 9705 [2022-11-22 00:32:48,607 INFO L226 Difference]: Without dead ends: 5368 [2022-11-22 00:32:48,625 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 [2022-11-22 00:32:48,626 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 466 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:48,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 2768 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-22 00:32:48,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5368 states. [2022-11-22 00:32:49,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5368 to 5313. [2022-11-22 00:32:49,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5313 states, 3075 states have (on average 1.272520325203252) internal successors, (3913), 3265 states have internal predecessors, (3913), 1835 states have call successors, (1835), 472 states have call predecessors, (1835), 400 states have return successors, (1879), 1610 states have call predecessors, (1879), 1831 states have call successors, (1879) [2022-11-22 00:32:49,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5313 states to 5313 states and 7627 transitions. [2022-11-22 00:32:49,149 INFO L78 Accepts]: Start accepts. Automaton has 5313 states and 7627 transitions. Word has length 165 [2022-11-22 00:32:49,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:49,151 INFO L495 AbstractCegarLoop]: Abstraction has 5313 states and 7627 transitions. [2022-11-22 00:32:49,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-22 00:32:49,152 INFO L276 IsEmpty]: Start isEmpty. Operand 5313 states and 7627 transitions. [2022-11-22 00:32:49,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-22 00:32:49,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:49,155 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 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] [2022-11-22 00:32:49,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 00:32:49,155 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:32:49,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:49,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1357275846, now seen corresponding path program 1 times [2022-11-22 00:32:49,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:49,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740854706] [2022-11-22 00:32:49,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:49,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:49,666 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-11-22 00:32:49,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:49,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740854706] [2022-11-22 00:32:49,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740854706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:49,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:49,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:32:49,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240292326] [2022-11-22 00:32:49,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:49,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:49,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:49,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:49,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:49,669 INFO L87 Difference]: Start difference. First operand 5313 states and 7627 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-22 00:32:53,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:54,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:54,051 INFO L93 Difference]: Finished difference Result 5319 states and 7632 transitions. [2022-11-22 00:32:54,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:32:54,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 170 [2022-11-22 00:32:54,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:54,074 INFO L225 Difference]: With dead ends: 5319 [2022-11-22 00:32:54,074 INFO L226 Difference]: Without dead ends: 5317 [2022-11-22 00:32:54,078 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 [2022-11-22 00:32:54,079 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1338 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:54,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1343 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-22 00:32:54,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5317 states. [2022-11-22 00:32:54,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5317 to 5317. [2022-11-22 00:32:54,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5317 states, 3078 states have (on average 1.2722547108512021) internal successors, (3916), 3268 states have internal predecessors, (3916), 1835 states have call successors, (1835), 473 states have call predecessors, (1835), 401 states have return successors, (1879), 1610 states have call predecessors, (1879), 1831 states have call successors, (1879) [2022-11-22 00:32:54,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5317 states to 5317 states and 7630 transitions. [2022-11-22 00:32:54,618 INFO L78 Accepts]: Start accepts. Automaton has 5317 states and 7630 transitions. Word has length 170 [2022-11-22 00:32:54,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:54,619 INFO L495 AbstractCegarLoop]: Abstraction has 5317 states and 7630 transitions. [2022-11-22 00:32:54,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-22 00:32:54,619 INFO L276 IsEmpty]: Start isEmpty. Operand 5317 states and 7630 transitions. [2022-11-22 00:32:54,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-22 00:32:54,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:54,622 INFO L195 NwaCegarLoop]: trace histogram [11, 8, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 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] [2022-11-22 00:32:54,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 00:32:54,623 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:32:54,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:54,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1456780698, now seen corresponding path program 1 times [2022-11-22 00:32:54,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:54,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407450953] [2022-11-22 00:32:54,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:54,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:55,077 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-11-22 00:32:55,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:55,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407450953] [2022-11-22 00:32:55,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407450953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:55,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:55,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:32:55,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523777397] [2022-11-22 00:32:55,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:55,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:55,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:55,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:55,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:55,080 INFO L87 Difference]: Start difference. First operand 5317 states and 7630 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 00:32:57,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:59,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:59,058 INFO L93 Difference]: Finished difference Result 5323 states and 7635 transitions. [2022-11-22 00:32:59,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:32:59,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 168 [2022-11-22 00:32:59,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:59,084 INFO L225 Difference]: With dead ends: 5323 [2022-11-22 00:32:59,085 INFO L226 Difference]: Without dead ends: 5321 [2022-11-22 00:32:59,088 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 [2022-11-22 00:32:59,089 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1339 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:59,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1343 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-22 00:32:59,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5321 states. [2022-11-22 00:32:59,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5321 to 5321. [2022-11-22 00:32:59,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5321 states, 3081 states have (on average 1.2719896137617657) internal successors, (3919), 3271 states have internal predecessors, (3919), 1835 states have call successors, (1835), 474 states have call predecessors, (1835), 402 states have return successors, (1879), 1610 states have call predecessors, (1879), 1831 states have call successors, (1879) [2022-11-22 00:32:59,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5321 states to 5321 states and 7633 transitions. [2022-11-22 00:32:59,576 INFO L78 Accepts]: Start accepts. Automaton has 5321 states and 7633 transitions. Word has length 168 [2022-11-22 00:32:59,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:59,577 INFO L495 AbstractCegarLoop]: Abstraction has 5321 states and 7633 transitions. [2022-11-22 00:32:59,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 00:32:59,577 INFO L276 IsEmpty]: Start isEmpty. Operand 5321 states and 7633 transitions. [2022-11-22 00:32:59,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-22 00:32:59,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:59,580 INFO L195 NwaCegarLoop]: trace histogram [11, 9, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 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] [2022-11-22 00:32:59,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 00:32:59,581 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:32:59,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:59,581 INFO L85 PathProgramCache]: Analyzing trace with hash 890884193, now seen corresponding path program 1 times [2022-11-22 00:32:59,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:59,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462694486] [2022-11-22 00:32:59,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:59,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:00,094 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2022-11-22 00:33:00,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:00,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462694486] [2022-11-22 00:33:00,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462694486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:00,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:00,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:33:00,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653992] [2022-11-22 00:33:00,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:00,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:33:00,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:00,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:33:00,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:33:00,097 INFO L87 Difference]: Start difference. First operand 5321 states and 7633 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 00:33:04,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:05,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:05,267 INFO L93 Difference]: Finished difference Result 6185 states and 8739 transitions. [2022-11-22 00:33:05,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:33:05,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 173 [2022-11-22 00:33:05,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:05,299 INFO L225 Difference]: With dead ends: 6185 [2022-11-22 00:33:05,299 INFO L226 Difference]: Without dead ends: 6183 [2022-11-22 00:33:05,303 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 [2022-11-22 00:33:05,304 INFO L413 NwaCegarLoop]: 1373 mSDtfsCounter, 931 mSDsluCounter, 3347 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 4720 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:05,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 4720 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-22 00:33:05,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6183 states. [2022-11-22 00:33:05,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6183 to 6141. [2022-11-22 00:33:05,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6141 states, 3485 states have (on average 1.2556671449067431) internal successors, (4376), 3690 states have internal predecessors, (4376), 2131 states have call successors, (2131), 630 states have call predecessors, (2131), 522 states have return successors, (2181), 1864 states have call predecessors, (2181), 2127 states have call successors, (2181) [2022-11-22 00:33:05,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6141 states to 6141 states and 8688 transitions. [2022-11-22 00:33:05,981 INFO L78 Accepts]: Start accepts. Automaton has 6141 states and 8688 transitions. Word has length 173 [2022-11-22 00:33:05,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:05,981 INFO L495 AbstractCegarLoop]: Abstraction has 6141 states and 8688 transitions. [2022-11-22 00:33:05,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 00:33:05,982 INFO L276 IsEmpty]: Start isEmpty. Operand 6141 states and 8688 transitions. [2022-11-22 00:33:05,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-22 00:33:05,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:05,984 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 9, 9, 7, 7, 7, 7, 7, 7, 5, 5, 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] [2022-11-22 00:33:05,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 00:33:05,985 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:33:05,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:05,985 INFO L85 PathProgramCache]: Analyzing trace with hash 301493589, now seen corresponding path program 1 times [2022-11-22 00:33:05,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:05,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892033709] [2022-11-22 00:33:05,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:05,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:06,494 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2022-11-22 00:33:06,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:06,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892033709] [2022-11-22 00:33:06,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892033709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:06,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:06,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:33:06,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590162426] [2022-11-22 00:33:06,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:06,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:33:06,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:06,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:33:06,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:33:06,497 INFO L87 Difference]: Start difference. First operand 6141 states and 8688 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-22 00:33:08,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:10,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:10,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:10,941 INFO L93 Difference]: Finished difference Result 6147 states and 8693 transitions. [2022-11-22 00:33:10,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:33:10,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 185 [2022-11-22 00:33:10,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:10,968 INFO L225 Difference]: With dead ends: 6147 [2022-11-22 00:33:10,968 INFO L226 Difference]: Without dead ends: 6145 [2022-11-22 00:33:10,973 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 [2022-11-22 00:33:10,974 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1338 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:10,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1340 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-22 00:33:10,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6145 states. [2022-11-22 00:33:11,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6145 to 6145. [2022-11-22 00:33:11,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6145 states, 3488 states have (on average 1.255447247706422) internal successors, (4379), 3693 states have internal predecessors, (4379), 2131 states have call successors, (2131), 631 states have call predecessors, (2131), 523 states have return successors, (2181), 1864 states have call predecessors, (2181), 2127 states have call successors, (2181) [2022-11-22 00:33:11,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6145 states to 6145 states and 8691 transitions. [2022-11-22 00:33:11,719 INFO L78 Accepts]: Start accepts. Automaton has 6145 states and 8691 transitions. Word has length 185 [2022-11-22 00:33:11,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:11,719 INFO L495 AbstractCegarLoop]: Abstraction has 6145 states and 8691 transitions. [2022-11-22 00:33:11,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-22 00:33:11,719 INFO L276 IsEmpty]: Start isEmpty. Operand 6145 states and 8691 transitions. [2022-11-22 00:33:11,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-22 00:33:11,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:11,723 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 7, 7, 7, 7, 7, 7, 5, 5, 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] [2022-11-22 00:33:11,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 00:33:11,723 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:33:11,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:11,724 INFO L85 PathProgramCache]: Analyzing trace with hash 2114249990, now seen corresponding path program 1 times [2022-11-22 00:33:11,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:11,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528286857] [2022-11-22 00:33:11,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:11,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:12,182 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2022-11-22 00:33:12,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:12,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528286857] [2022-11-22 00:33:12,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528286857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:12,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:12,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:33:12,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352675465] [2022-11-22 00:33:12,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:12,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:33:12,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:12,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:33:12,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:33:12,185 INFO L87 Difference]: Start difference. First operand 6145 states and 8691 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-22 00:33:16,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:17,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:18,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:18,423 INFO L93 Difference]: Finished difference Result 6151 states and 8696 transitions. [2022-11-22 00:33:18,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:33:18,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 190 [2022-11-22 00:33:18,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:18,451 INFO L225 Difference]: With dead ends: 6151 [2022-11-22 00:33:18,451 INFO L226 Difference]: Without dead ends: 6147 [2022-11-22 00:33:18,455 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 [2022-11-22 00:33:18,456 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1338 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:18,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-22 00:33:18,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6147 states. [2022-11-22 00:33:19,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6147 to 6147. [2022-11-22 00:33:19,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6147 states, 3490 states have (on average 1.2550143266475644) internal successors, (4380), 3694 states have internal predecessors, (4380), 2131 states have call successors, (2131), 632 states have call predecessors, (2131), 523 states have return successors, (2181), 1864 states have call predecessors, (2181), 2127 states have call successors, (2181) [2022-11-22 00:33:19,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6147 states to 6147 states and 8692 transitions. [2022-11-22 00:33:19,232 INFO L78 Accepts]: Start accepts. Automaton has 6147 states and 8692 transitions. Word has length 190 [2022-11-22 00:33:19,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:19,232 INFO L495 AbstractCegarLoop]: Abstraction has 6147 states and 8692 transitions. [2022-11-22 00:33:19,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-22 00:33:19,233 INFO L276 IsEmpty]: Start isEmpty. Operand 6147 states and 8692 transitions. [2022-11-22 00:33:19,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-22 00:33:19,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:19,237 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 7, 7, 7, 7, 7, 7, 4, 4, 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] [2022-11-22 00:33:19,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 00:33:19,237 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:33:19,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:19,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1585105446, now seen corresponding path program 1 times [2022-11-22 00:33:19,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:19,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872639479] [2022-11-22 00:33:19,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:19,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:19,655 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2022-11-22 00:33:19,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:19,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872639479] [2022-11-22 00:33:19,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872639479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:19,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:19,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:33:19,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320771147] [2022-11-22 00:33:19,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:19,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:33:19,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:19,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:33:19,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:33:19,658 INFO L87 Difference]: Start difference. First operand 6147 states and 8692 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-22 00:33:21,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:22,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:24,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:24,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:24,527 INFO L93 Difference]: Finished difference Result 6147 states and 8692 transitions. [2022-11-22 00:33:24,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:33:24,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 188 [2022-11-22 00:33:24,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:24,547 INFO L225 Difference]: With dead ends: 6147 [2022-11-22 00:33:24,548 INFO L226 Difference]: Without dead ends: 5988 [2022-11-22 00:33:24,552 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 [2022-11-22 00:33:24,553 INFO L413 NwaCegarLoop]: 1199 mSDtfsCounter, 1335 mSDsluCounter, 2382 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 3581 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:24,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 3581 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-22 00:33:24,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5988 states. [2022-11-22 00:33:25,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5988 to 5988. [2022-11-22 00:33:25,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5988 states, 3436 states have (on average 1.2485448195576252) internal successors, (4290), 3604 states have internal predecessors, (4290), 2042 states have call successors, (2042), 605 states have call predecessors, (2042), 508 states have return successors, (2096), 1822 states have call predecessors, (2096), 2042 states have call successors, (2096) [2022-11-22 00:33:25,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5988 states to 5988 states and 8428 transitions. [2022-11-22 00:33:25,333 INFO L78 Accepts]: Start accepts. Automaton has 5988 states and 8428 transitions. Word has length 188 [2022-11-22 00:33:25,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:25,334 INFO L495 AbstractCegarLoop]: Abstraction has 5988 states and 8428 transitions. [2022-11-22 00:33:25,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-22 00:33:25,334 INFO L276 IsEmpty]: Start isEmpty. Operand 5988 states and 8428 transitions. [2022-11-22 00:33:25,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-22 00:33:25,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:25,337 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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] [2022-11-22 00:33:25,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 00:33:25,337 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:33:25,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:25,338 INFO L85 PathProgramCache]: Analyzing trace with hash -479486756, now seen corresponding path program 1 times [2022-11-22 00:33:25,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:25,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569356968] [2022-11-22 00:33:25,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:25,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:26,095 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2022-11-22 00:33:26,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:26,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569356968] [2022-11-22 00:33:26,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569356968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:26,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:26,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:33:26,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919208641] [2022-11-22 00:33:26,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:26,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:33:26,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:26,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:33:26,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:33:26,098 INFO L87 Difference]: Start difference. First operand 5988 states and 8428 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-22 00:33:30,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:31,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:31,319 INFO L93 Difference]: Finished difference Result 6001 states and 8439 transitions. [2022-11-22 00:33:31,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:33:31,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 208 [2022-11-22 00:33:31,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:31,340 INFO L225 Difference]: With dead ends: 6001 [2022-11-22 00:33:31,340 INFO L226 Difference]: Without dead ends: 5999 [2022-11-22 00:33:31,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:33:31,343 INFO L413 NwaCegarLoop]: 1322 mSDtfsCounter, 856 mSDsluCounter, 3262 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 4584 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:31,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 4584 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-22 00:33:31,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5999 states. [2022-11-22 00:33:32,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5999 to 5988. [2022-11-22 00:33:32,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5988 states, 3436 states have (on average 1.2453434225844005) internal successors, (4279), 3604 states have internal predecessors, (4279), 2042 states have call successors, (2042), 605 states have call predecessors, (2042), 508 states have return successors, (2096), 1822 states have call predecessors, (2096), 2042 states have call successors, (2096) [2022-11-22 00:33:32,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5988 states to 5988 states and 8417 transitions. [2022-11-22 00:33:32,048 INFO L78 Accepts]: Start accepts. Automaton has 5988 states and 8417 transitions. Word has length 208 [2022-11-22 00:33:32,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:32,048 INFO L495 AbstractCegarLoop]: Abstraction has 5988 states and 8417 transitions. [2022-11-22 00:33:32,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-22 00:33:32,049 INFO L276 IsEmpty]: Start isEmpty. Operand 5988 states and 8417 transitions. [2022-11-22 00:33:32,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2022-11-22 00:33:32,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:32,055 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 13, 7, 7, 7, 7, 7, 7, 5, 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] [2022-11-22 00:33:32,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 00:33:32,055 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:33:32,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:32,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1529763751, now seen corresponding path program 1 times [2022-11-22 00:33:32,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:32,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040015203] [2022-11-22 00:33:32,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:32,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:32,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2725 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2725 trivial. 0 not checked. [2022-11-22 00:33:32,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:32,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040015203] [2022-11-22 00:33:32,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040015203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:32,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:32,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:33:32,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397975508] [2022-11-22 00:33:32,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:32,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:33:32,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:32,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:33:32,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:33:32,842 INFO L87 Difference]: Start difference. First operand 5988 states and 8417 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-22 00:33:35,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:36,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:36,469 INFO L93 Difference]: Finished difference Result 11947 states and 16879 transitions. [2022-11-22 00:33:36,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:33:36,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 552 [2022-11-22 00:33:36,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:36,501 INFO L225 Difference]: With dead ends: 11947 [2022-11-22 00:33:36,501 INFO L226 Difference]: Without dead ends: 6028 [2022-11-22 00:33:36,524 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 [2022-11-22 00:33:36,525 INFO L413 NwaCegarLoop]: 1155 mSDtfsCounter, 2 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:36,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2303 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-22 00:33:36,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6028 states. [2022-11-22 00:33:37,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6028 to 5996. [2022-11-22 00:33:37,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5996 states, 3444 states have (on average 1.244773519163763) internal successors, (4287), 3612 states have internal predecessors, (4287), 2042 states have call successors, (2042), 605 states have call predecessors, (2042), 508 states have return successors, (2096), 1822 states have call predecessors, (2096), 2042 states have call successors, (2096) [2022-11-22 00:33:37,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5996 states to 5996 states and 8425 transitions. [2022-11-22 00:33:37,117 INFO L78 Accepts]: Start accepts. Automaton has 5996 states and 8425 transitions. Word has length 552 [2022-11-22 00:33:37,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:37,118 INFO L495 AbstractCegarLoop]: Abstraction has 5996 states and 8425 transitions. [2022-11-22 00:33:37,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-22 00:33:37,119 INFO L276 IsEmpty]: Start isEmpty. Operand 5996 states and 8425 transitions. [2022-11-22 00:33:37,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2022-11-22 00:33:37,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:37,130 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 13, 7, 7, 7, 7, 7, 7, 5, 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] [2022-11-22 00:33:37,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-22 00:33:37,131 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:33:37,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:37,131 INFO L85 PathProgramCache]: Analyzing trace with hash -132276092, now seen corresponding path program 1 times [2022-11-22 00:33:37,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:37,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271806966] [2022-11-22 00:33:37,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:37,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3225 trivial. 0 not checked. [2022-11-22 00:33:37,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:37,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271806966] [2022-11-22 00:33:37,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271806966] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:33:37,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196818554] [2022-11-22 00:33:37,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:37,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:33:37,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_804fcd65-cbf0-48f0-aaab-03b41ef2568a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:33:37,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_804fcd65-cbf0-48f0-aaab-03b41ef2568a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:33:37,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_804fcd65-cbf0-48f0-aaab-03b41ef2568a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:33:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:39,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 6634 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 00:33:39,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:33:39,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3226 backedges. 588 proven. 1 refuted. 0 times theorem prover too weak. 2637 trivial. 0 not checked. [2022-11-22 00:33:39,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:33:40,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3225 trivial. 0 not checked. [2022-11-22 00:33:40,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196818554] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:33:40,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [229641261] [2022-11-22 00:33:40,858 INFO L159 IcfgInterpreter]: Started Sifa with 201 locations of interest [2022-11-22 00:33:40,859 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:33:40,863 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:33:40,869 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:33:40,870 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:33:51,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-11-22 00:33:51,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-11-22 00:33:53,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21