./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-mutex_drivers-net-ethernet-via-via-rhine.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_05682a3e-6799-4844-b3a1-ca6e5ccdab70/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05682a3e-6799-4844-b3a1-ca6e5ccdab70/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_05682a3e-6799-4844-b3a1-ca6e5ccdab70/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05682a3e-6799-4844-b3a1-ca6e5ccdab70/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05682a3e-6799-4844-b3a1-ca6e5ccdab70/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_05682a3e-6799-4844-b3a1-ca6e5ccdab70/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 c5b0d1bb6abf00f856e27261b150a3be237701039761971659caf0639a1797fb --- 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 01:49:20,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:49:20,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:49:20,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:49:20,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:49:20,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:49:20,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:49:20,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:49:20,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:49:20,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:49:20,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:49:20,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:49:20,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:49:20,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:49:20,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:49:20,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:49:20,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:49:20,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:49:20,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:49:20,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:49:20,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:49:20,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:49:20,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:49:20,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:49:20,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:49:20,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:49:20,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:49:20,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:49:20,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:49:20,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:49:20,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:49:20,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:49:20,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:49:20,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:49:20,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:49:20,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:49:20,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:49:20,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:49:20,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:49:20,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:49:20,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:49:20,573 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05682a3e-6799-4844-b3a1-ca6e5ccdab70/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:49:20,621 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:49:20,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:49:20,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:49:20,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:49:20,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:49:20,625 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:49:20,625 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:49:20,625 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:49:20,626 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:49:20,626 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:49:20,627 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:49:20,627 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:49:20,628 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:49:20,628 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:49:20,628 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:49:20,629 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:49:20,629 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:49:20,629 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:49:20,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:49:20,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:49:20,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:49:20,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:49:20,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:49:20,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:49:20,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:49:20,632 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:49:20,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:49:20,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:49:20,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:49:20,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:49:20,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:49:20,635 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:49:20,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:49:20,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:49:20,636 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:49:20,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:49:20,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:49:20,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:49:20,637 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_05682a3e-6799-4844-b3a1-ca6e5ccdab70/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05682a3e-6799-4844-b3a1-ca6e5ccdab70/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5b0d1bb6abf00f856e27261b150a3be237701039761971659caf0639a1797fb [2022-11-22 01:49:21,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:49:21,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:49:21,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:49:21,105 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:49:21,105 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:49:21,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05682a3e-6799-4844-b3a1-ca6e5ccdab70/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-22 01:49:24,551 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:49:25,490 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:49:25,491 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05682a3e-6799-4844-b3a1-ca6e5ccdab70/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-22 01:49:25,557 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05682a3e-6799-4844-b3a1-ca6e5ccdab70/bin/utaipan-g80aRyZoba/data/32770ee28/771d44089cef47b0b079b692c0e0534b/FLAGa5845a5ab [2022-11-22 01:49:25,578 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05682a3e-6799-4844-b3a1-ca6e5ccdab70/bin/utaipan-g80aRyZoba/data/32770ee28/771d44089cef47b0b079b692c0e0534b [2022-11-22 01:49:25,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:49:25,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:49:25,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:49:25,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:49:25,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:49:25,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:49:25" (1/1) ... [2022-11-22 01:49:25,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f538e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:25, skipping insertion in model container [2022-11-22 01:49:25,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:49:25" (1/1) ... [2022-11-22 01:49:25,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:49:25,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:49:29,626 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_05682a3e-6799-4844-b3a1-ca6e5ccdab70/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[380944,380957] [2022-11-22 01:49:29,636 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_05682a3e-6799-4844-b3a1-ca6e5ccdab70/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381110,381123] [2022-11-22 01:49:29,637 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_05682a3e-6799-4844-b3a1-ca6e5ccdab70/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381274,381287] [2022-11-22 01:49:29,638 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_05682a3e-6799-4844-b3a1-ca6e5ccdab70/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381439,381452] [2022-11-22 01:49:29,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:49:29,762 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:49:30,351 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_05682a3e-6799-4844-b3a1-ca6e5ccdab70/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[380944,380957] [2022-11-22 01:49:30,352 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_05682a3e-6799-4844-b3a1-ca6e5ccdab70/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381110,381123] [2022-11-22 01:49:30,352 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_05682a3e-6799-4844-b3a1-ca6e5ccdab70/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381274,381287] [2022-11-22 01:49:30,354 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_05682a3e-6799-4844-b3a1-ca6e5ccdab70/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381439,381452] [2022-11-22 01:49:30,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:49:30,686 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:49:30,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30 WrapperNode [2022-11-22 01:49:30,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:49:30,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:49:30,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:49:30,688 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:49:30,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (1/1) ... [2022-11-22 01:49:30,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (1/1) ... [2022-11-22 01:49:31,130 INFO L138 Inliner]: procedures = 490, calls = 2663, calls flagged for inlining = 292, calls inlined = 259, statements flattened = 5854 [2022-11-22 01:49:31,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:49:31,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:49:31,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:49:31,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:49:31,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (1/1) ... [2022-11-22 01:49:31,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (1/1) ... [2022-11-22 01:49:31,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (1/1) ... [2022-11-22 01:49:31,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (1/1) ... [2022-11-22 01:49:31,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (1/1) ... [2022-11-22 01:49:31,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (1/1) ... [2022-11-22 01:49:31,464 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (1/1) ... [2022-11-22 01:49:31,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (1/1) ... [2022-11-22 01:49:31,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:49:31,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:49:31,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:49:31,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:49:31,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (1/1) ... [2022-11-22 01:49:31,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:49:31,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05682a3e-6799-4844-b3a1-ca6e5ccdab70/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:49:31,584 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05682a3e-6799-4844-b3a1-ca6e5ccdab70/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:49:31,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05682a3e-6799-4844-b3a1-ca6e5ccdab70/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:49:31,646 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-22 01:49:31,647 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-22 01:49:31,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 01:49:31,647 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 01:49:31,647 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-22 01:49:31,647 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-22 01:49:31,648 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 01:49:31,648 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 01:49:31,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 01:49:31,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 01:49:31,648 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-22 01:49:31,649 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-22 01:49:31,649 INFO L130 BoogieDeclarations]: Found specification of procedure free_tbufs [2022-11-22 01:49:31,649 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tbufs [2022-11-22 01:49:31,649 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-22 01:49:31,649 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-22 01:49:31,650 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 01:49:31,650 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 01:49:31,651 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-22 01:49:31,652 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-22 01:49:31,652 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 01:49:31,652 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 01:49:31,653 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-22 01:49:31,653 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-22 01:49:31,654 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_poll [2022-11-22 01:49:31,654 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_poll [2022-11-22 01:49:31,654 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-11-22 01:49:31,654 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-11-22 01:49:31,654 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-22 01:49:31,655 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-22 01:49:31,655 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_low [2022-11-22 01:49:31,655 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_low [2022-11-22 01:49:31,655 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-22 01:49:31,656 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-22 01:49:31,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 01:49:31,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 01:49:31,656 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 01:49:31,656 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 01:49:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-22 01:49:31,657 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-22 01:49:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 01:49:31,657 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 01:49:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 01:49:31,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 01:49:31,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-22 01:49:31,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-22 01:49:31,659 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-22 01:49:31,659 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-22 01:49:31,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:49:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-22 01:49:31,660 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-22 01:49:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit [2022-11-22 01:49:31,661 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit [2022-11-22 01:49:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 01:49:31,661 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 01:49:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-22 01:49:31,662 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-22 01:49:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-22 01:49:31,662 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-22 01:49:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_rbufs [2022-11-22 01:49:31,662 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_rbufs [2022-11-22 01:49:31,663 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 01:49:31,663 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 01:49:31,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 01:49:31,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 01:49:31,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 01:49:31,664 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_interrupt [2022-11-22 01:49:31,665 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_interrupt [2022-11-22 01:49:31,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:49:31,666 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 01:49:31,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 01:49:31,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 01:49:31,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 01:49:31,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 01:49:31,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 01:49:31,668 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_disable [2022-11-22 01:49:31,668 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_disable [2022-11-22 01:49:31,668 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-11-22 01:49:31,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-11-22 01:49:31,669 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-22 01:49:31,669 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-22 01:49:31,669 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-22 01:49:31,669 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-22 01:49:31,669 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_carrier [2022-11-22 01:49:31,670 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_carrier [2022-11-22 01:49:31,670 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_shutdown [2022-11-22 01:49:31,671 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_shutdown [2022-11-22 01:49:31,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:49:31,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 01:49:31,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 01:49:31,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 01:49:31,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 01:49:31,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-22 01:49:31,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-22 01:49:31,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-22 01:49:31,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-22 01:49:31,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:49:31,674 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2022-11-22 01:49:31,674 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2022-11-22 01:49:31,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 01:49:31,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 01:49:31,675 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 01:49:31,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 01:49:31,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:49:31,678 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-22 01:49:31,681 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-22 01:49:31,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-22 01:49:31,682 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:49:31,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:49:31,683 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-22 01:49:31,684 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-22 01:49:31,685 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_rx_mode [2022-11-22 01:49:31,685 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_rx_mode [2022-11-22 01:49:31,685 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:49:31,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:49:31,691 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_rx_crc_and_missed_errord [2022-11-22 01:49:31,691 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_rx_crc_and_missed_errord [2022-11-22 01:49:31,691 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2022-11-22 01:49:31,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2022-11-22 01:49:31,692 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-22 01:49:31,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-22 01:49:31,692 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2022-11-22 01:49:31,692 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2022-11-22 01:49:31,692 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 01:49:31,692 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 01:49:31,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 01:49:31,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 01:49:31,693 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2022-11-22 01:49:31,693 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2022-11-22 01:49:31,693 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 01:49:31,693 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 01:49:31,694 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_power_init [2022-11-22 01:49:31,694 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_power_init [2022-11-22 01:49:31,694 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_tx_timeout [2022-11-22 01:49:31,694 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_tx_timeout [2022-11-22 01:49:31,694 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-22 01:49:31,695 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-22 01:49:31,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:49:31,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:49:31,695 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-22 01:49:31,695 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-22 01:49:31,695 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-22 01:49:31,696 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-22 01:49:31,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 01:49:31,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 01:49:31,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 01:49:31,696 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-22 01:49:31,696 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_chip_reset [2022-11-22 01:49:31,697 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_chip_reset [2022-11-22 01:49:31,697 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-22 01:49:31,697 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-22 01:49:31,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 01:49:31,697 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 01:49:31,698 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_cam_mask [2022-11-22 01:49:31,698 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_cam_mask [2022-11-22 01:49:31,698 INFO L130 BoogieDeclarations]: Found specification of procedure init_registers [2022-11-22 01:49:31,698 INFO L138 BoogieDeclarations]: Found implementation of procedure init_registers [2022-11-22 01:49:31,698 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 01:49:31,699 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 01:49:31,699 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_remove_one [2022-11-22 01:49:31,699 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_remove_one [2022-11-22 01:49:31,699 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-22 01:49:31,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-22 01:49:31,700 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-22 01:49:31,700 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-22 01:49:31,700 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_close [2022-11-22 01:49:31,700 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_close [2022-11-22 01:49:31,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_task_lock_of_rhine_private [2022-11-22 01:49:31,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_task_lock_of_rhine_private [2022-11-22 01:49:31,701 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-22 01:49:31,701 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-22 01:49:31,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:49:31,701 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-22 01:49:31,701 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-22 01:49:31,702 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 01:49:31,702 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 01:49:31,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:49:31,702 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_check_media [2022-11-22 01:49:31,704 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_check_media [2022-11-22 01:49:31,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2022-11-22 01:49:31,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2022-11-22 01:49:31,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:49:31,705 INFO L130 BoogieDeclarations]: Found specification of procedure free_rbufs [2022-11-22 01:49:31,705 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rbufs [2022-11-22 01:49:31,705 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_get_events [2022-11-22 01:49:31,705 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_get_events [2022-11-22 01:49:31,706 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 01:49:31,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 01:49:31,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-22 01:49:31,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-22 01:49:31,706 INFO L130 BoogieDeclarations]: Found specification of procedure enable_mmio [2022-11-22 01:49:31,706 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_mmio [2022-11-22 01:49:31,707 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_vlan_cam_mask [2022-11-22 01:49:31,707 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_vlan_cam_mask [2022-11-22 01:49:31,707 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-22 01:49:31,707 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-22 01:49:31,707 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 01:49:31,708 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 01:49:31,708 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-22 01:49:31,708 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-22 01:49:31,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 01:49:31,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 01:49:31,708 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-22 01:49:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-22 01:49:31,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-22 01:49:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-22 01:49:31,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-22 01:49:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-22 01:49:31,709 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 01:49:31,710 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 01:49:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 01:49:31,710 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 01:49:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_disable_linkmon [2022-11-22 01:49:31,710 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_disable_linkmon [2022-11-22 01:49:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_ack_events [2022-11-22 01:49:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_ack_events [2022-11-22 01:49:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 01:49:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 01:49:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_resume [2022-11-22 01:49:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_resume [2022-11-22 01:49:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-22 01:49:31,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-22 01:49:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:49:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-22 01:49:31,712 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-22 01:49:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 01:49:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 01:49:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2022-11-22 01:49:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2022-11-22 01:49:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-22 01:49:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-22 01:49:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_task_lock_of_rhine_private [2022-11-22 01:49:31,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_task_lock_of_rhine_private [2022-11-22 01:49:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_high [2022-11-22 01:49:31,720 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_high [2022-11-22 01:49:31,720 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_irq_disable [2022-11-22 01:49:31,720 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_irq_disable [2022-11-22 01:49:31,720 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_enable [2022-11-22 01:49:31,720 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_enable [2022-11-22 01:49:31,721 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_tbufs [2022-11-22 01:49:31,721 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_tbufs [2022-11-22 01:49:31,721 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-22 01:49:31,723 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-22 01:49:31,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 01:49:31,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 01:49:31,724 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-22 01:49:31,724 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-22 01:49:31,724 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-22 01:49:31,724 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-22 01:49:31,725 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_enable_linkmon [2022-11-22 01:49:31,725 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_enable_linkmon [2022-11-22 01:49:31,725 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_vcam [2022-11-22 01:49:31,725 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_vcam [2022-11-22 01:49:31,725 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-22 01:49:31,725 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-22 01:49:31,726 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-22 01:49:31,726 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-22 01:49:31,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:49:31,726 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_suspend [2022-11-22 01:49:31,726 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_suspend [2022-11-22 01:49:31,726 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_open [2022-11-22 01:49:31,727 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_open [2022-11-22 01:49:31,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 01:49:31,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 01:49:33,152 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:49:33,160 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:49:33,512 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 02:00:45,201 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 02:00:45,353 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:00:51,801 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:00:51,802 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-22 02:00:51,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:00:51 BoogieIcfgContainer [2022-11-22 02:00:51,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:00:51,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:00:51,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:00:51,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:00:51,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:49:25" (1/3) ... [2022-11-22 02:00:51,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af938c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:00:51, skipping insertion in model container [2022-11-22 02:00:51,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:30" (2/3) ... [2022-11-22 02:00:51,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af938c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:00:51, skipping insertion in model container [2022-11-22 02:00:51,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:00:51" (3/3) ... [2022-11-22 02:00:51,827 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-22 02:00:51,851 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:00:51,852 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 02:00:51,993 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:00:51,999 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;@2b075f0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:00:51,999 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 02:00:52,015 INFO L276 IsEmpty]: Start isEmpty. Operand has 1653 states, 946 states have (on average 1.3128964059196617) internal successors, (1242), 995 states have internal predecessors, (1242), 582 states have call successors, (582), 124 states have call predecessors, (582), 123 states have return successors, (573), 560 states have call predecessors, (573), 573 states have call successors, (573) [2022-11-22 02:00:52,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-22 02:00:52,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:52,055 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 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] [2022-11-22 02:00:52,057 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:00:52,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:52,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1788844933, now seen corresponding path program 1 times [2022-11-22 02:00:52,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:52,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204807123] [2022-11-22 02:00:52,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:52,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:55,656 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2022-11-22 02:00:55,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:55,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204807123] [2022-11-22 02:00:55,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204807123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:55,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:55,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:55,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693639843] [2022-11-22 02:00:55,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:55,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:55,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:55,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:55,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:55,735 INFO L87 Difference]: Start difference. First operand has 1653 states, 946 states have (on average 1.3128964059196617) internal successors, (1242), 995 states have internal predecessors, (1242), 582 states have call successors, (582), 124 states have call predecessors, (582), 123 states have return successors, (573), 560 states have call predecessors, (573), 573 states have call successors, (573) 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-22 02:00:57,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:01:04,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:01:04,351 INFO L93 Difference]: Finished difference Result 4816 states and 7130 transitions. [2022-11-22 02:01:04,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:01:04,354 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 164 [2022-11-22 02:01:04,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:01:04,407 INFO L225 Difference]: With dead ends: 4816 [2022-11-22 02:01:04,407 INFO L226 Difference]: Without dead ends: 3179 [2022-11-22 02:01:04,422 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 02:01:04,426 INFO L413 NwaCegarLoop]: 2571 mSDtfsCounter, 2269 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2269 SdHoareTripleChecker+Valid, 4568 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:01:04,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2269 Valid, 4568 Invalid, 724 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 714 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2022-11-22 02:01:04,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2022-11-22 02:01:04,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 3175. [2022-11-22 02:01:04,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3175 states, 1826 states have (on average 1.3061336254107339) internal successors, (2385), 1921 states have internal predecessors, (2385), 1104 states have call successors, (1104), 243 states have call predecessors, (1104), 242 states have return successors, (1100), 1074 states have call predecessors, (1100), 1100 states have call successors, (1100) [2022-11-22 02:01:04,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3175 states to 3175 states and 4589 transitions. [2022-11-22 02:01:04,824 INFO L78 Accepts]: Start accepts. Automaton has 3175 states and 4589 transitions. Word has length 164 [2022-11-22 02:01:04,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:01:04,828 INFO L495 AbstractCegarLoop]: Abstraction has 3175 states and 4589 transitions. [2022-11-22 02:01:04,828 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-22 02:01:04,828 INFO L276 IsEmpty]: Start isEmpty. Operand 3175 states and 4589 transitions. [2022-11-22 02:01:04,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-22 02:01:04,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:01:04,850 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:01:04,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:01:04,852 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:01:04,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:01:04,853 INFO L85 PathProgramCache]: Analyzing trace with hash 490349135, now seen corresponding path program 1 times [2022-11-22 02:01:04,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:01:04,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290162769] [2022-11-22 02:01:04,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:01:04,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:01:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:01:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2022-11-22 02:01:07,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:01:07,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290162769] [2022-11-22 02:01:07,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290162769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:01:07,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:01:07,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:01:07,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797684441] [2022-11-22 02:01:07,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:01:07,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:01:07,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:01:07,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:01:07,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:01:07,452 INFO L87 Difference]: Start difference. First operand 3175 states and 4589 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-22 02:01:09,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:01:15,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:01:15,576 INFO L93 Difference]: Finished difference Result 9107 states and 13133 transitions. [2022-11-22 02:01:15,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:01:15,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 165 [2022-11-22 02:01:15,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:01:15,628 INFO L225 Difference]: With dead ends: 9107 [2022-11-22 02:01:15,628 INFO L226 Difference]: Without dead ends: 5961 [2022-11-22 02:01:15,649 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 02:01:15,650 INFO L413 NwaCegarLoop]: 2636 mSDtfsCounter, 2001 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2001 SdHoareTripleChecker+Valid, 4594 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:01:15,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2001 Valid, 4594 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 793 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2022-11-22 02:01:15,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5961 states. [2022-11-22 02:01:15,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5961 to 5940. [2022-11-22 02:01:15,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5940 states, 3403 states have (on average 1.2918013517484572) internal successors, (4396), 3577 states have internal predecessors, (4396), 2059 states have call successors, (2059), 476 states have call predecessors, (2059), 475 states have return successors, (2055), 2004 states have call predecessors, (2055), 2055 states have call successors, (2055) [2022-11-22 02:01:16,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 8510 transitions. [2022-11-22 02:01:16,043 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 8510 transitions. Word has length 165 [2022-11-22 02:01:16,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:01:16,047 INFO L495 AbstractCegarLoop]: Abstraction has 5940 states and 8510 transitions. [2022-11-22 02:01:16,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-22 02:01:16,047 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 8510 transitions. [2022-11-22 02:01:16,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-22 02:01:16,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:01:16,053 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:01:16,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:01:16,054 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:01:16,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:01:16,055 INFO L85 PathProgramCache]: Analyzing trace with hash 820924458, now seen corresponding path program 1 times [2022-11-22 02:01:16,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:01:16,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178984194] [2022-11-22 02:01:16,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:01:16,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:01:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:01:18,026 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2022-11-22 02:01:18,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:01:18,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178984194] [2022-11-22 02:01:18,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178984194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:01:18,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:01:18,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:01:18,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821222309] [2022-11-22 02:01:18,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:01:18,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:01:18,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:01:18,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:01:18,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:01:18,030 INFO L87 Difference]: Start difference. First operand 5940 states and 8510 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-22 02:01:20,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:01:25,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:01:25,877 INFO L93 Difference]: Finished difference Result 16690 states and 23800 transitions. [2022-11-22 02:01:25,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:01:25,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 166 [2022-11-22 02:01:25,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:01:25,964 INFO L225 Difference]: With dead ends: 16690 [2022-11-22 02:01:25,964 INFO L226 Difference]: Without dead ends: 10779 [2022-11-22 02:01:25,998 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 02:01:25,999 INFO L413 NwaCegarLoop]: 2482 mSDtfsCounter, 1915 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 4443 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:01:25,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1915 Valid, 4443 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 729 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-11-22 02:01:26,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10779 states. [2022-11-22 02:01:26,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10779 to 10754. [2022-11-22 02:01:26,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10754 states, 6127 states have (on average 1.2808878733474784) internal successors, (7848), 6457 states have internal predecessors, (7848), 3721 states have call successors, (3721), 908 states have call predecessors, (3721), 903 states have return successors, (3719), 3604 states have call predecessors, (3719), 3717 states have call successors, (3719) [2022-11-22 02:01:26,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10754 states to 10754 states and 15288 transitions. [2022-11-22 02:01:26,782 INFO L78 Accepts]: Start accepts. Automaton has 10754 states and 15288 transitions. Word has length 166 [2022-11-22 02:01:26,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:01:26,784 INFO L495 AbstractCegarLoop]: Abstraction has 10754 states and 15288 transitions. [2022-11-22 02:01:26,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-22 02:01:26,786 INFO L276 IsEmpty]: Start isEmpty. Operand 10754 states and 15288 transitions. [2022-11-22 02:01:26,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-22 02:01:26,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:01:26,791 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:01:26,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:01:26,791 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:01:26,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:01:26,792 INFO L85 PathProgramCache]: Analyzing trace with hash 948168321, now seen corresponding path program 1 times [2022-11-22 02:01:26,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:01:26,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119719367] [2022-11-22 02:01:26,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:01:26,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:01:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:01:28,949 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2022-11-22 02:01:28,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:01:28,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119719367] [2022-11-22 02:01:28,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119719367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:01:28,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:01:28,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:01:28,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784191142] [2022-11-22 02:01:28,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:01:28,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:01:28,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:01:28,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:01:28,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:01:28,958 INFO L87 Difference]: Start difference. First operand 10754 states and 15288 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-22 02:01:31,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:01:36,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:01:36,876 INFO L93 Difference]: Finished difference Result 22758 states and 32260 transitions. [2022-11-22 02:01:36,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:01:36,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 176 [2022-11-22 02:01:36,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:01:36,968 INFO L225 Difference]: With dead ends: 22758 [2022-11-22 02:01:36,968 INFO L226 Difference]: Without dead ends: 12033 [2022-11-22 02:01:37,026 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 02:01:37,027 INFO L413 NwaCegarLoop]: 2748 mSDtfsCounter, 1983 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 4722 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:01:37,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1983 Valid, 4722 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 833 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-11-22 02:01:37,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12033 states. [2022-11-22 02:01:38,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12033 to 12010. [2022-11-22 02:01:38,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12010 states, 6863 states have (on average 1.2723298848899898) internal successors, (8732), 7232 states have internal predecessors, (8732), 4086 states have call successors, (4086), 1066 states have call predecessors, (4086), 1058 states have return successors, (4084), 3938 states have call predecessors, (4084), 4082 states have call successors, (4084) [2022-11-22 02:01:38,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12010 states to 12010 states and 16902 transitions. [2022-11-22 02:01:38,140 INFO L78 Accepts]: Start accepts. Automaton has 12010 states and 16902 transitions. Word has length 176 [2022-11-22 02:01:38,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:01:38,141 INFO L495 AbstractCegarLoop]: Abstraction has 12010 states and 16902 transitions. [2022-11-22 02:01:38,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-22 02:01:38,141 INFO L276 IsEmpty]: Start isEmpty. Operand 12010 states and 16902 transitions. [2022-11-22 02:01:38,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-22 02:01:38,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:01:38,147 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:01:38,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:01:38,148 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:01:38,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:01:38,148 INFO L85 PathProgramCache]: Analyzing trace with hash -574879773, now seen corresponding path program 1 times [2022-11-22 02:01:38,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:01:38,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323024483] [2022-11-22 02:01:38,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:01:38,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:01:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:01:40,589 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2022-11-22 02:01:40,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:01:40,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323024483] [2022-11-22 02:01:40,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323024483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:01:40,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:01:40,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:01:40,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245817513] [2022-11-22 02:01:40,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:01:40,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:01:40,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:01:40,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:01:40,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:01:40,594 INFO L87 Difference]: Start difference. First operand 12010 states and 16902 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-22 02:01:42,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:01:48,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:01:48,251 INFO L93 Difference]: Finished difference Result 33961 states and 47841 transitions. [2022-11-22 02:01:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:01:48,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 177 [2022-11-22 02:01:48,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:01:48,394 INFO L225 Difference]: With dead ends: 33961 [2022-11-22 02:01:48,395 INFO L226 Difference]: Without dead ends: 21980 [2022-11-22 02:01:48,454 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 02:01:48,455 INFO L413 NwaCegarLoop]: 2571 mSDtfsCounter, 2285 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2285 SdHoareTripleChecker+Valid, 4574 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:01:48,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2285 Valid, 4574 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 702 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-22 02:01:48,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21980 states. [2022-11-22 02:01:50,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21980 to 21947. [2022-11-22 02:01:50,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21947 states, 12530 states have (on average 1.2725458898643256) internal successors, (15945), 13225 states have internal predecessors, (15945), 7482 states have call successors, (7482), 1947 states have call predecessors, (7482), 1932 states have return successors, (7482), 7191 states have call predecessors, (7482), 7478 states have call successors, (7482) [2022-11-22 02:01:50,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21947 states to 21947 states and 30909 transitions. [2022-11-22 02:01:50,233 INFO L78 Accepts]: Start accepts. Automaton has 21947 states and 30909 transitions. Word has length 177 [2022-11-22 02:01:50,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:01:50,234 INFO L495 AbstractCegarLoop]: Abstraction has 21947 states and 30909 transitions. [2022-11-22 02:01:50,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-22 02:01:50,234 INFO L276 IsEmpty]: Start isEmpty. Operand 21947 states and 30909 transitions. [2022-11-22 02:01:50,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-22 02:01:50,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:01:50,239 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 14, 14, 14, 14, 14, 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] [2022-11-22 02:01:50,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:01:50,240 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:01:50,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:01:50,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1308652265, now seen corresponding path program 1 times [2022-11-22 02:01:50,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:01:50,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991463576] [2022-11-22 02:01:50,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:01:50,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:01:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:01:52,722 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2022-11-22 02:01:52,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:01:52,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991463576] [2022-11-22 02:01:52,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991463576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:01:52,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:01:52,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:01:52,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891090308] [2022-11-22 02:01:52,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:01:52,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:01:52,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:01:52,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:01:52,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:01:52,727 INFO L87 Difference]: Start difference. First operand 21947 states and 30909 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-22 02:01:54,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:02:00,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:02:02,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:02:02,903 INFO L93 Difference]: Finished difference Result 59755 states and 84176 transitions. [2022-11-22 02:02:02,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:02:02,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 185 [2022-11-22 02:02:02,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:02:03,118 INFO L225 Difference]: With dead ends: 59755 [2022-11-22 02:02:03,118 INFO L226 Difference]: Without dead ends: 37837 [2022-11-22 02:02:03,208 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 02:02:03,209 INFO L413 NwaCegarLoop]: 3182 mSDtfsCounter, 2138 mSDsluCounter, 1986 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2138 SdHoareTripleChecker+Valid, 5168 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:02:03,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2138 Valid, 5168 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 908 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2022-11-22 02:02:03,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37837 states. [2022-11-22 02:02:05,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37837 to 37644. [2022-11-22 02:02:05,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37644 states, 21654 states have (on average 1.272513161540593) internal successors, (27555), 22891 states have internal predecessors, (27555), 12682 states have call successors, (12682), 3334 states have call predecessors, (12682), 3305 states have return successors, (12686), 12138 states have call predecessors, (12686), 12678 states have call successors, (12686) [2022-11-22 02:02:05,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37644 states to 37644 states and 52923 transitions. [2022-11-22 02:02:05,809 INFO L78 Accepts]: Start accepts. Automaton has 37644 states and 52923 transitions. Word has length 185 [2022-11-22 02:02:05,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:02:05,810 INFO L495 AbstractCegarLoop]: Abstraction has 37644 states and 52923 transitions. [2022-11-22 02:02:05,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-22 02:02:05,811 INFO L276 IsEmpty]: Start isEmpty. Operand 37644 states and 52923 transitions. [2022-11-22 02:02:05,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-22 02:02:05,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:02:05,816 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 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 02:02:05,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:02:05,816 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:02:05,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:02:05,817 INFO L85 PathProgramCache]: Analyzing trace with hash -707012806, now seen corresponding path program 1 times [2022-11-22 02:02:05,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:02:05,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134941447] [2022-11-22 02:02:05,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:02:05,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:02:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:02:11,483 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-22 02:02:11,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:02:11,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134941447] [2022-11-22 02:02:11,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134941447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:02:11,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:02:11,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:02:11,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848980696] [2022-11-22 02:02:11,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:02:11,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:02:11,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:02:11,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:02:11,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:02:11,486 INFO L87 Difference]: Start difference. First operand 37644 states and 52923 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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 02:02:13,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:02:20,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:02:22,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:02:22,337 INFO L93 Difference]: Finished difference Result 37650 states and 52928 transitions. [2022-11-22 02:02:22,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:02:22,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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 208 [2022-11-22 02:02:22,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:02:22,560 INFO L225 Difference]: With dead ends: 37650 [2022-11-22 02:02:22,560 INFO L226 Difference]: Without dead ends: 37648 [2022-11-22 02:02:22,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:02:22,581 INFO L413 NwaCegarLoop]: 2008 mSDtfsCounter, 2305 mSDsluCounter, 4011 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2308 SdHoareTripleChecker+Valid, 6019 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:02:22,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2308 Valid, 6019 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1046 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2022-11-22 02:02:22,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37648 states. [2022-11-22 02:02:25,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37648 to 37648. [2022-11-22 02:02:25,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37648 states, 21657 states have (on average 1.27247541210694) internal successors, (27558), 22894 states have internal predecessors, (27558), 12682 states have call successors, (12682), 3335 states have call predecessors, (12682), 3306 states have return successors, (12686), 12138 states have call predecessors, (12686), 12678 states have call successors, (12686) [2022-11-22 02:02:25,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37648 states to 37648 states and 52926 transitions. [2022-11-22 02:02:25,415 INFO L78 Accepts]: Start accepts. Automaton has 37648 states and 52926 transitions. Word has length 208 [2022-11-22 02:02:25,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:02:25,416 INFO L495 AbstractCegarLoop]: Abstraction has 37648 states and 52926 transitions. [2022-11-22 02:02:25,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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 02:02:25,416 INFO L276 IsEmpty]: Start isEmpty. Operand 37648 states and 52926 transitions. [2022-11-22 02:02:25,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-22 02:02:25,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:02:25,422 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:02:25,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:02:25,423 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:02:25,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:02:25,423 INFO L85 PathProgramCache]: Analyzing trace with hash 394849844, now seen corresponding path program 1 times [2022-11-22 02:02:25,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:02:25,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130059161] [2022-11-22 02:02:25,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:02:25,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:02:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:02:30,120 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 881 trivial. 0 not checked. [2022-11-22 02:02:30,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:02:30,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130059161] [2022-11-22 02:02:30,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130059161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:02:30,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:02:30,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:02:30,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903518018] [2022-11-22 02:02:30,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:02:30,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:02:30,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:02:30,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:02:30,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:02:30,124 INFO L87 Difference]: Start difference. First operand 37648 states and 52926 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 02:02:32,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:02:39,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:02:41,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:02:41,260 INFO L93 Difference]: Finished difference Result 37654 states and 52931 transitions. [2022-11-22 02:02:41,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:02:41,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 212 [2022-11-22 02:02:41,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:02:41,469 INFO L225 Difference]: With dead ends: 37654 [2022-11-22 02:02:41,470 INFO L226 Difference]: Without dead ends: 37652 [2022-11-22 02:02:41,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:02:41,491 INFO L413 NwaCegarLoop]: 2011 mSDtfsCounter, 2301 mSDsluCounter, 4011 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2303 SdHoareTripleChecker+Valid, 6022 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:02:41,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2303 Valid, 6022 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1046 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-11-22 02:02:41,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37652 states. [2022-11-22 02:02:44,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37652 to 37652. [2022-11-22 02:02:44,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37652 states, 21660 states have (on average 1.2724376731301938) internal successors, (27561), 22897 states have internal predecessors, (27561), 12682 states have call successors, (12682), 3336 states have call predecessors, (12682), 3307 states have return successors, (12686), 12138 states have call predecessors, (12686), 12678 states have call successors, (12686) [2022-11-22 02:02:44,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37652 states to 37652 states and 52929 transitions. [2022-11-22 02:02:44,449 INFO L78 Accepts]: Start accepts. Automaton has 37652 states and 52929 transitions. Word has length 212 [2022-11-22 02:02:44,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:02:44,450 INFO L495 AbstractCegarLoop]: Abstraction has 37652 states and 52929 transitions. [2022-11-22 02:02:44,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 02:02:44,450 INFO L276 IsEmpty]: Start isEmpty. Operand 37652 states and 52929 transitions. [2022-11-22 02:02:44,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-22 02:02:44,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:02:44,455 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:02:44,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:02:44,455 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:02:44,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:02:44,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1888550426, now seen corresponding path program 1 times [2022-11-22 02:02:44,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:02:44,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892382185] [2022-11-22 02:02:44,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:02:44,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:02:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:02:49,180 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2022-11-22 02:02:49,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:02:49,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892382185] [2022-11-22 02:02:49,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892382185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:02:49,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:02:49,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:02:49,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796015943] [2022-11-22 02:02:49,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:02:49,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:02:49,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:02:49,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:02:49,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:02:49,183 INFO L87 Difference]: Start difference. First operand 37652 states and 52929 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 02:02:51,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:02:59,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:03:01,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:03:01,523 INFO L93 Difference]: Finished difference Result 37658 states and 52934 transitions. [2022-11-22 02:03:01,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:03:01,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 218 [2022-11-22 02:03:01,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:03:01,697 INFO L225 Difference]: With dead ends: 37658 [2022-11-22 02:03:01,697 INFO L226 Difference]: Without dead ends: 37654 [2022-11-22 02:03:01,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:03:01,720 INFO L413 NwaCegarLoop]: 2011 mSDtfsCounter, 2300 mSDsluCounter, 4011 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 6022 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:03:01,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2301 Valid, 6022 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1046 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-11-22 02:03:01,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37654 states. [2022-11-22 02:03:04,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37654 to 37654. [2022-11-22 02:03:04,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37654 states, 21662 states have (on average 1.2723663558304865) internal successors, (27562), 22898 states have internal predecessors, (27562), 12682 states have call successors, (12682), 3337 states have call predecessors, (12682), 3307 states have return successors, (12686), 12138 states have call predecessors, (12686), 12678 states have call successors, (12686) [2022-11-22 02:03:04,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37654 states to 37654 states and 52930 transitions. [2022-11-22 02:03:04,390 INFO L78 Accepts]: Start accepts. Automaton has 37654 states and 52930 transitions. Word has length 218 [2022-11-22 02:03:04,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:03:04,391 INFO L495 AbstractCegarLoop]: Abstraction has 37654 states and 52930 transitions. [2022-11-22 02:03:04,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 02:03:04,391 INFO L276 IsEmpty]: Start isEmpty. Operand 37654 states and 52930 transitions. [2022-11-22 02:03:04,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-22 02:03:04,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:03:04,398 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:03:04,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:03:04,398 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:03:04,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:03:04,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1646898151, now seen corresponding path program 1 times [2022-11-22 02:03:04,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:03:04,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154825932] [2022-11-22 02:03:04,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:03:04,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:03:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:03:08,448 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2022-11-22 02:03:08,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:03:08,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154825932] [2022-11-22 02:03:08,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154825932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:03:08,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:03:08,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:03:08,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610625620] [2022-11-22 02:03:08,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:03:08,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:03:08,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:03:08,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:03:08,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:03:08,452 INFO L87 Difference]: Start difference. First operand 37654 states and 52930 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 02:03:10,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:03:19,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:03:21,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:03:21,488 INFO L93 Difference]: Finished difference Result 43162 states and 59923 transitions. [2022-11-22 02:03:21,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:03:21,488 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 224 [2022-11-22 02:03:21,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:03:21,668 INFO L225 Difference]: With dead ends: 43162 [2022-11-22 02:03:21,668 INFO L226 Difference]: Without dead ends: 42883 [2022-11-22 02:03:21,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:03:21,694 INFO L413 NwaCegarLoop]: 2271 mSDtfsCounter, 2161 mSDsluCounter, 5020 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2161 SdHoareTripleChecker+Valid, 7291 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:03:21,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2161 Valid, 7291 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1202 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2022-11-22 02:03:21,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42883 states. [2022-11-22 02:03:24,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42883 to 42883. [2022-11-22 02:03:24,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42883 states, 24515 states have (on average 1.26081990617989) internal successors, (30909), 25854 states have internal predecessors, (30909), 14228 states have call successors, (14228), 4150 states have call predecessors, (14228), 4138 states have return successors, (14236), 13710 states have call predecessors, (14236), 14228 states have call successors, (14236) [2022-11-22 02:03:24,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42883 states to 42883 states and 59373 transitions. [2022-11-22 02:03:24,677 INFO L78 Accepts]: Start accepts. Automaton has 42883 states and 59373 transitions. Word has length 224 [2022-11-22 02:03:24,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:03:24,678 INFO L495 AbstractCegarLoop]: Abstraction has 42883 states and 59373 transitions. [2022-11-22 02:03:24,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 02:03:24,678 INFO L276 IsEmpty]: Start isEmpty. Operand 42883 states and 59373 transitions. [2022-11-22 02:03:24,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-22 02:03:24,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:03:24,684 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 4, 4, 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] [2022-11-22 02:03:24,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:03:24,685 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:03:24,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:03:24,685 INFO L85 PathProgramCache]: Analyzing trace with hash -822028858, now seen corresponding path program 1 times [2022-11-22 02:03:24,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:03:24,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231626194] [2022-11-22 02:03:24,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:03:24,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:03:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:03:26,671 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2022-11-22 02:03:26,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:03:26,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231626194] [2022-11-22 02:03:26,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231626194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:03:26,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:03:26,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:03:26,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630424138] [2022-11-22 02:03:26,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:03:26,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:03:26,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:03:26,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:03:26,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:03:26,673 INFO L87 Difference]: Start difference. First operand 42883 states and 59373 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25)