./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/bin/utaipan-eEHZpOm5b7 --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 59473e3c2ae80c2e7996950da3475e9070fa07527cbe1064da7145ffd0ce24e6 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:37:13,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:37:13,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:37:13,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:37:13,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:37:13,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:37:13,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:37:13,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:37:13,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:37:13,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:37:13,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:37:13,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:37:13,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:37:13,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:37:13,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:37:13,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:37:13,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:37:13,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:37:13,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:37:13,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:37:13,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:37:13,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:37:13,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:37:13,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:37:13,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:37:13,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:37:13,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:37:13,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:37:13,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:37:13,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:37:13,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:37:13,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:37:13,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:37:13,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:37:13,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:37:13,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:37:13,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:37:13,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:37:13,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:37:13,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:37:13,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:37:13,674 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:37:13,727 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:37:13,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:37:13,728 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:37:13,729 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:37:13,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:37:13,736 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:37:13,736 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:37:13,736 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:37:13,737 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:37:13,737 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:37:13,738 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:37:13,738 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:37:13,739 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:37:13,739 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:37:13,739 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:37:13,739 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:37:13,740 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:37:13,740 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:37:13,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:37:13,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:37:13,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:37:13,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:37:13,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:37:13,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:37:13,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:37:13,742 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:37:13,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:37:13,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:37:13,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:37:13,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:37:13,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:37:13,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:37:13,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:37:13,746 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:37:13,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:37:13,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:37:13,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:37:13,747 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:37:13,747 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59473e3c2ae80c2e7996950da3475e9070fa07527cbe1064da7145ffd0ce24e6 [2021-11-25 18:37:14,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:37:14,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:37:14,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:37:14,079 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:37:14,080 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:37:14,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i [2021-11-25 18:37:14,151 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/bin/utaipan-eEHZpOm5b7/data/55f31dcc9/a06b8ae2ece244ecbdf6048ad8984486/FLAGe796b6b50 [2021-11-25 18:37:15,210 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:37:15,210 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i [2021-11-25 18:37:15,262 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/bin/utaipan-eEHZpOm5b7/data/55f31dcc9/a06b8ae2ece244ecbdf6048ad8984486/FLAGe796b6b50 [2021-11-25 18:37:15,670 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/bin/utaipan-eEHZpOm5b7/data/55f31dcc9/a06b8ae2ece244ecbdf6048ad8984486 [2021-11-25 18:37:15,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:37:15,674 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:37:15,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:37:15,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:37:15,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:37:15,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:37:15" (1/1) ... [2021-11-25 18:37:15,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b82ec2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:15, skipping insertion in model container [2021-11-25 18:37:15,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:37:15" (1/1) ... [2021-11-25 18:37:15,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:37:15,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:37:18,259 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[358872,358885] [2021-11-25 18:37:18,261 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[359038,359051] [2021-11-25 18:37:18,262 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[359202,359215] [2021-11-25 18:37:18,263 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[359367,359380] [2021-11-25 18:37:18,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:37:18,371 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:37:18,895 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[358872,358885] [2021-11-25 18:37:18,895 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[359038,359051] [2021-11-25 18:37:18,896 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[359202,359215] [2021-11-25 18:37:18,896 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[359367,359380] [2021-11-25 18:37:18,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:37:19,174 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:37:19,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:19 WrapperNode [2021-11-25 18:37:19,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:37:19,176 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:37:19,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:37:19,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:37:19,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:19" (1/1) ... [2021-11-25 18:37:19,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:19" (1/1) ... [2021-11-25 18:37:19,463 INFO L137 Inliner]: procedures = 258, calls = 1714, calls flagged for inlining = 142, calls inlined = 128, statements flattened = 3710 [2021-11-25 18:37:19,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:37:19,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:37:19,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:37:19,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:37:19,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:19" (1/1) ... [2021-11-25 18:37:19,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:19" (1/1) ... [2021-11-25 18:37:19,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:19" (1/1) ... [2021-11-25 18:37:19,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:19" (1/1) ... [2021-11-25 18:37:19,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:19" (1/1) ... [2021-11-25 18:37:19,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:19" (1/1) ... [2021-11-25 18:37:19,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:19" (1/1) ... [2021-11-25 18:37:19,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:37:19,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:37:19,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:37:19,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:37:19,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:19" (1/1) ... [2021-11-25 18:37:19,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:37:19,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:37:19,743 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:37:19,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8221cc9-e111-4133-b8d3-2915d0e7a0fe/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:37:19,797 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_i2c_xfer [2021-11-25 18:37:19,798 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_i2c_xfer [2021-11-25 18:37:19,798 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_usb_device_exit [2021-11-25 18:37:19,798 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_usb_device_exit [2021-11-25 18:37:19,798 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_mt352_frontend_attach_vp7049 [2021-11-25 18:37:19,798 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_mt352_frontend_attach_vp7049 [2021-11-25 18:37:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_m920x_driver_exit_10_2 [2021-11-25 18:37:19,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_m920x_driver_exit_10_2 [2021-11-25 18:37:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-25 18:37:19,799 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-25 18:37:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:37:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_usb_device_init [2021-11-25 18:37:19,800 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_usb_device_init [2021-11-25 18:37:19,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:37:19,800 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:37:19,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:37:19,800 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_mt2060_tuner_attach [2021-11-25 18:37:19,801 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_mt2060_tuner_attach [2021-11-25 18:37:19,801 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_tda8275_61_tuner_attach [2021-11-25 18:37:19,801 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_tda8275_61_tuner_attach [2021-11-25 18:37:19,801 INFO L130 BoogieDeclarations]: Found specification of procedure usb_altnum_to_altsetting [2021-11-25 18:37:19,801 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_altnum_to_altsetting [2021-11-25 18:37:19,801 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_6_4 [2021-11-25 18:37:19,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_6_4 [2021-11-25 18:37:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:37:19,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:37:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_update_filters [2021-11-25 18:37:19,802 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_update_filters [2021-11-25 18:37:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_write_seq [2021-11-25 18:37:19,803 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_write_seq [2021-11-25 18:37:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_tda8275_60_tuner_attach [2021-11-25 18:37:19,803 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_tda8275_60_tuner_attach [2021-11-25 18:37:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2021-11-25 18:37:19,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2021-11-25 18:37:19,804 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_pid_filter_ctrl [2021-11-25 18:37:19,804 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_pid_filter_ctrl [2021-11-25 18:37:19,804 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2021-11-25 18:37:19,804 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2021-11-25 18:37:19,804 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_probe [2021-11-25 18:37:19,804 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_probe [2021-11-25 18:37:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:37:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_rc_query [2021-11-25 18:37:19,805 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_rc_query [2021-11-25 18:37:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure mt352_write [2021-11-25 18:37:19,805 INFO L138 BoogieDeclarations]: Found implementation of procedure mt352_write [2021-11-25 18:37:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:37:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 18:37:19,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 18:37:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:37:19,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:37:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 18:37:19,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 18:37:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_parse_rc_state [2021-11-25 18:37:19,807 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_parse_rc_state [2021-11-25 18:37:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:37:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:37:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_firmware_download [2021-11-25 18:37:19,808 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_firmware_download [2021-11-25 18:37:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 18:37:19,808 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 18:37:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_pid_filter [2021-11-25 18:37:19,808 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_pid_filter [2021-11-25 18:37:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 18:37:19,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 18:37:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:37:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-11-25 18:37:19,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-11-25 18:37:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:37:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_tda10046_0b_frontend_attach [2021-11-25 18:37:19,810 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_tda10046_0b_frontend_attach [2021-11-25 18:37:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 18:37:19,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 18:37:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:37:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 18:37:19,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 18:37:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_mt352_frontend_attach [2021-11-25 18:37:19,811 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_mt352_frontend_attach [2021-11-25 18:37:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-11-25 18:37:19,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-11-25 18:37:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-25 18:37:19,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-25 18:37:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 18:37:19,812 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 18:37:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 18:37:19,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 18:37:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:37:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_tda10046_08_frontend_attach [2021-11-25 18:37:19,813 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_tda10046_08_frontend_attach [2021-11-25 18:37:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_qt1010_tuner_attach [2021-11-25 18:37:19,813 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_qt1010_tuner_attach [2021-11-25 18:37:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_mt352_demod_init [2021-11-25 18:37:19,814 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_mt352_demod_init [2021-11-25 18:37:19,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:37:19,814 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_write [2021-11-25 18:37:19,814 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_write [2021-11-25 18:37:19,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 18:37:19,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 18:37:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_fmd1216me_tuner_attach [2021-11-25 18:37:19,815 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_fmd1216me_tuner_attach [2021-11-25 18:37:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:37:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 18:37:19,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 18:37:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:37:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:37:19,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:37:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-25 18:37:19,816 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-25 18:37:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_get [2021-11-25 18:37:19,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_get [2021-11-25 18:37:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 18:37:19,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 18:37:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_set_filter [2021-11-25 18:37:19,817 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_set_filter [2021-11-25 18:37:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_identify_state [2021-11-25 18:37:19,817 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_identify_state [2021-11-25 18:37:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:37:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 18:37:19,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 18:37:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_i2c_func [2021-11-25 18:37:19,818 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_i2c_func [2021-11-25 18:37:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:37:19,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:37:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_read [2021-11-25 18:37:19,819 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_read [2021-11-25 18:37:20,717 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:37:20,722 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:37:22,639 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:41:21,353 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 18:41:21,454 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:41:24,456 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:41:24,456 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 18:41:24,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:41:24 BoogieIcfgContainer [2021-11-25 18:41:24,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:41:24,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:41:24,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:41:24,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:41:24,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:37:15" (1/3) ... [2021-11-25 18:41:24,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f8a680b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:41:24, skipping insertion in model container [2021-11-25 18:41:24,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:19" (2/3) ... [2021-11-25 18:41:24,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f8a680b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:41:24, skipping insertion in model container [2021-11-25 18:41:24,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:41:24" (3/3) ... [2021-11-25 18:41:24,472 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i [2021-11-25 18:41:24,484 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:41:24,484 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 18:41:24,566 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:41:24,584 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:41:24,584 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 18:41:24,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 1031 states, 658 states have (on average 1.378419452887538) internal successors, (907), 670 states have internal predecessors, (907), 317 states have call successors, (317), 54 states have call predecessors, (317), 53 states have return successors, (311), 311 states have call predecessors, (311), 311 states have call successors, (311) [2021-11-25 18:41:24,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2021-11-25 18:41:24,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:41:24,680 INFO L514 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:41:24,681 INFO L402 AbstractCegarLoop]: === Iteration 1 === 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:41:24,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:41:24,687 INFO L85 PathProgramCache]: Analyzing trace with hash 971355088, now seen corresponding path program 1 times [2021-11-25 18:41:24,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:41:24,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071253044] [2021-11-25 18:41:24,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:41:24,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:41:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:41:27,086 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11556 trivial. 0 not checked. [2021-11-25 18:41:27,087 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:41:27,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071253044] [2021-11-25 18:41:27,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071253044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:41:27,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:41:27,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:41:27,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375690777] [2021-11-25 18:41:27,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:41:27,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:41:27,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:41:27,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:41:27,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:41:27,148 INFO L87 Difference]: Start difference. First operand has 1031 states, 658 states have (on average 1.378419452887538) internal successors, (907), 670 states have internal predecessors, (907), 317 states have call successors, (317), 54 states have call predecessors, (317), 53 states have return successors, (311), 311 states have call predecessors, (311), 311 states have call successors, (311) Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-25 18:41:29,299 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:31,744 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:34,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:41:34,546 INFO L93 Difference]: Finished difference Result 2854 states and 4318 transitions. [2021-11-25 18:41:34,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:41:34,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 562 [2021-11-25 18:41:34,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:41:34,595 INFO L225 Difference]: With dead ends: 2854 [2021-11-25 18:41:34,596 INFO L226 Difference]: Without dead ends: 1917 [2021-11-25 18:41:34,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:41:34,617 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 1341 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 2857 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:41:34,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1341 Valid, 2857 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 460 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2021-11-25 18:41:34,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2021-11-25 18:41:34,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1898. [2021-11-25 18:41:34,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1898 states, 1234 states have (on average 1.3849270664505673) internal successors, (1709), 1262 states have internal predecessors, (1709), 558 states have call successors, (558), 104 states have call predecessors, (558), 103 states have return successors, (554), 549 states have call predecessors, (554), 554 states have call successors, (554) [2021-11-25 18:41:34,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 2821 transitions. [2021-11-25 18:41:34,870 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 2821 transitions. Word has length 562 [2021-11-25 18:41:34,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:41:34,873 INFO L470 AbstractCegarLoop]: Abstraction has 1898 states and 2821 transitions. [2021-11-25 18:41:34,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-25 18:41:34,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 2821 transitions. [2021-11-25 18:41:34,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2021-11-25 18:41:34,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:41:34,895 INFO L514 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 54, 54, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:41:34,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:41:34,896 INFO L402 AbstractCegarLoop]: === Iteration 2 === 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:41:34,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:41:34,897 INFO L85 PathProgramCache]: Analyzing trace with hash 931884965, now seen corresponding path program 1 times [2021-11-25 18:41:34,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:41:34,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825297524] [2021-11-25 18:41:34,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:41:34,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:41:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:41:36,061 INFO L134 CoverageAnalysis]: Checked inductivity of 11559 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11559 trivial. 0 not checked. [2021-11-25 18:41:36,062 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:41:36,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825297524] [2021-11-25 18:41:36,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825297524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:41:36,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:41:36,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:41:36,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473161443] [2021-11-25 18:41:36,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:41:36,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:41:36,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:41:36,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:41:36,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:41:36,075 INFO L87 Difference]: Start difference. First operand 1898 states and 2821 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-25 18:41:38,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:40,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:42,671 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:43,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:41:43,608 INFO L93 Difference]: Finished difference Result 4547 states and 6747 transitions. [2021-11-25 18:41:43,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:41:43,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 564 [2021-11-25 18:41:43,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:41:43,641 INFO L225 Difference]: With dead ends: 4547 [2021-11-25 18:41:43,641 INFO L226 Difference]: Without dead ends: 2758 [2021-11-25 18:41:43,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:41:43,654 INFO L933 BasicCegarLoop]: 1513 mSDtfsCounter, 1272 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 2758 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:41:43,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1272 Valid, 2758 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 474 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2021-11-25 18:41:43,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2758 states. [2021-11-25 18:41:43,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2758 to 2754. [2021-11-25 18:41:43,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2754 states, 1808 states have (on average 1.3871681415929205) internal successors, (2508), 1845 states have internal predecessors, (2508), 787 states have call successors, (787), 157 states have call predecessors, (787), 156 states have return successors, (783), 778 states have call predecessors, (783), 783 states have call successors, (783) [2021-11-25 18:41:43,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 4078 transitions. [2021-11-25 18:41:43,833 INFO L78 Accepts]: Start accepts. Automaton has 2754 states and 4078 transitions. Word has length 564 [2021-11-25 18:41:43,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:41:43,835 INFO L470 AbstractCegarLoop]: Abstraction has 2754 states and 4078 transitions. [2021-11-25 18:41:43,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-25 18:41:43,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2754 states and 4078 transitions. [2021-11-25 18:41:43,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2021-11-25 18:41:43,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:41:43,853 INFO L514 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:41:43,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:41:43,854 INFO L402 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:41:43,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:41:43,854 INFO L85 PathProgramCache]: Analyzing trace with hash 2014304652, now seen corresponding path program 1 times [2021-11-25 18:41:43,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:41:43,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735988848] [2021-11-25 18:41:43,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:41:43,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:41:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:41:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11556 trivial. 0 not checked. [2021-11-25 18:41:45,116 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:41:45,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735988848] [2021-11-25 18:41:45,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735988848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:41:45,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:41:45,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:41:45,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739602525] [2021-11-25 18:41:45,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:41:45,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:41:45,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:41:45,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:41:45,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:41:45,124 INFO L87 Difference]: Start difference. First operand 2754 states and 4078 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-25 18:41:47,246 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:49,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:52,742 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:53,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:41:53,767 INFO L93 Difference]: Finished difference Result 7083 states and 10467 transitions. [2021-11-25 18:41:53,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:41:53,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 564 [2021-11-25 18:41:53,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:41:53,820 INFO L225 Difference]: With dead ends: 7083 [2021-11-25 18:41:53,820 INFO L226 Difference]: Without dead ends: 4438 [2021-11-25 18:41:53,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:41:53,846 INFO L933 BasicCegarLoop]: 1525 mSDtfsCounter, 1263 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 2784 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:41:53,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1263 Valid, 2784 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 478 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-11-25 18:41:53,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4438 states. [2021-11-25 18:41:54,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4438 to 4417. [2021-11-25 18:41:54,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4417 states, 2915 states have (on average 1.3893653516295026) internal successors, (4050), 2982 states have internal predecessors, (4050), 1235 states have call successors, (1235), 265 states have call predecessors, (1235), 264 states have return successors, (1231), 1214 states have call predecessors, (1231), 1231 states have call successors, (1231) [2021-11-25 18:41:54,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4417 states to 4417 states and 6516 transitions. [2021-11-25 18:41:54,233 INFO L78 Accepts]: Start accepts. Automaton has 4417 states and 6516 transitions. Word has length 564 [2021-11-25 18:41:54,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:41:54,236 INFO L470 AbstractCegarLoop]: Abstraction has 4417 states and 6516 transitions. [2021-11-25 18:41:54,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-25 18:41:54,237 INFO L276 IsEmpty]: Start isEmpty. Operand 4417 states and 6516 transitions. [2021-11-25 18:41:54,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2021-11-25 18:41:54,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:41:54,254 INFO L514 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:41:54,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:41:54,254 INFO L402 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:41:54,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:41:54,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1756681372, now seen corresponding path program 1 times [2021-11-25 18:41:54,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:41:54,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67531669] [2021-11-25 18:41:54,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:41:54,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:41:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:41:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11556 trivial. 0 not checked. [2021-11-25 18:41:55,282 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:41:55,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67531669] [2021-11-25 18:41:55,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67531669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:41:55,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:41:55,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:41:55,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711398498] [2021-11-25 18:41:55,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:41:55,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:41:55,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:41:55,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:41:55,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:41:55,289 INFO L87 Difference]: Start difference. First operand 4417 states and 6516 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-25 18:41:57,410 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:59,195 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:01,750 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:03,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:42:03,043 INFO L93 Difference]: Finished difference Result 12001 states and 17675 transitions. [2021-11-25 18:42:03,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:42:03,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 565 [2021-11-25 18:42:03,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:42:03,124 INFO L225 Difference]: With dead ends: 12001 [2021-11-25 18:42:03,125 INFO L226 Difference]: Without dead ends: 7693 [2021-11-25 18:42:03,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:42:03,160 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 1253 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:42:03,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1253 Valid, 2883 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 508 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2021-11-25 18:42:03,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7693 states. [2021-11-25 18:42:03,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7693 to 7672. [2021-11-25 18:42:03,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7672 states, 5080 states have (on average 1.3901574803149606) internal successors, (7062), 5207 states have internal predecessors, (7062), 2109 states have call successors, (2109), 481 states have call predecessors, (2109), 480 states have return successors, (2105), 2064 states have call predecessors, (2105), 2105 states have call successors, (2105) [2021-11-25 18:42:03,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7672 states to 7672 states and 11276 transitions. [2021-11-25 18:42:03,726 INFO L78 Accepts]: Start accepts. Automaton has 7672 states and 11276 transitions. Word has length 565 [2021-11-25 18:42:03,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:42:03,728 INFO L470 AbstractCegarLoop]: Abstraction has 7672 states and 11276 transitions. [2021-11-25 18:42:03,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-25 18:42:03,729 INFO L276 IsEmpty]: Start isEmpty. Operand 7672 states and 11276 transitions. [2021-11-25 18:42:03,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2021-11-25 18:42:03,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:42:03,751 INFO L514 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:42:03,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:42:03,752 INFO L402 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:42:03,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:42:03,754 INFO L85 PathProgramCache]: Analyzing trace with hash 246650699, now seen corresponding path program 1 times [2021-11-25 18:42:03,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:42:03,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274666508] [2021-11-25 18:42:03,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:42:03,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:42:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:42:04,852 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11556 trivial. 0 not checked. [2021-11-25 18:42:04,852 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:42:04,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274666508] [2021-11-25 18:42:04,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274666508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:42:04,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:42:04,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:42:04,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750162100] [2021-11-25 18:42:04,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:42:04,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:42:04,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:42:04,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:42:04,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:42:04,855 INFO L87 Difference]: Start difference. First operand 7672 states and 11276 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-25 18:42:06,978 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:09,594 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:12,726 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:13,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:42:13,974 INFO L93 Difference]: Finished difference Result 21679 states and 31816 transitions. [2021-11-25 18:42:13,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:42:13,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 566 [2021-11-25 18:42:13,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:42:14,086 INFO L225 Difference]: With dead ends: 21679 [2021-11-25 18:42:14,086 INFO L226 Difference]: Without dead ends: 14116 [2021-11-25 18:42:14,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:42:14,135 INFO L933 BasicCegarLoop]: 1674 mSDtfsCounter, 1261 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 2933 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:42:14,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1261 Valid, 2933 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 520 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2021-11-25 18:42:14,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14116 states. [2021-11-25 18:42:14,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14116 to 14095. [2021-11-25 18:42:14,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14095 states, 9368 states have (on average 1.3895175064047822) internal successors, (13017), 9615 states have internal predecessors, (13017), 3812 states have call successors, (3812), 913 states have call predecessors, (3812), 912 states have return successors, (3808), 3719 states have call predecessors, (3808), 3808 states have call successors, (3808) [2021-11-25 18:42:15,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14095 states to 14095 states and 20637 transitions. [2021-11-25 18:42:15,018 INFO L78 Accepts]: Start accepts. Automaton has 14095 states and 20637 transitions. Word has length 566 [2021-11-25 18:42:15,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:42:15,020 INFO L470 AbstractCegarLoop]: Abstraction has 14095 states and 20637 transitions. [2021-11-25 18:42:15,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-25 18:42:15,021 INFO L276 IsEmpty]: Start isEmpty. Operand 14095 states and 20637 transitions. [2021-11-25 18:42:15,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2021-11-25 18:42:15,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:42:15,028 INFO L514 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:42:15,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:42:15,029 INFO L402 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:42:15,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:42:15,030 INFO L85 PathProgramCache]: Analyzing trace with hash 912091683, now seen corresponding path program 1 times [2021-11-25 18:42:15,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:42:15,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722432672] [2021-11-25 18:42:15,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:42:15,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:42:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:42:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11556 trivial. 0 not checked. [2021-11-25 18:42:15,939 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:42:15,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722432672] [2021-11-25 18:42:15,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722432672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:42:15,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:42:15,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:42:15,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695409160] [2021-11-25 18:42:15,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:42:15,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:42:15,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:42:15,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:42:15,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:42:15,942 INFO L87 Difference]: Start difference. First operand 14095 states and 20637 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-25 18:42:18,060 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:19,595 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:23,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:42:23,112 INFO L93 Difference]: Finished difference Result 40644 states and 59408 transitions. [2021-11-25 18:42:23,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:42:23,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 567 [2021-11-25 18:42:23,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:42:23,268 INFO L225 Difference]: With dead ends: 40644 [2021-11-25 18:42:23,268 INFO L226 Difference]: Without dead ends: 26658 [2021-11-25 18:42:23,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:42:23,345 INFO L933 BasicCegarLoop]: 1711 mSDtfsCounter, 1258 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 2970 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:42:23,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1258 Valid, 2970 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 535 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-11-25 18:42:23,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26658 states. [2021-11-25 18:42:24,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26658 to 26637. [2021-11-25 18:42:24,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26637 states, 17759 states have (on average 1.3871276535840982) internal successors, (24634), 18246 states have internal predecessors, (24634), 7099 states have call successors, (7099), 1777 states have call predecessors, (7099), 1776 states have return successors, (7095), 6910 states have call predecessors, (7095), 7095 states have call successors, (7095) [2021-11-25 18:42:25,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26637 states to 26637 states and 38828 transitions. [2021-11-25 18:42:25,089 INFO L78 Accepts]: Start accepts. Automaton has 26637 states and 38828 transitions. Word has length 567 [2021-11-25 18:42:25,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:42:25,091 INFO L470 AbstractCegarLoop]: Abstraction has 26637 states and 38828 transitions. [2021-11-25 18:42:25,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-25 18:42:25,091 INFO L276 IsEmpty]: Start isEmpty. Operand 26637 states and 38828 transitions. [2021-11-25 18:42:25,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2021-11-25 18:42:25,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:42:25,097 INFO L514 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:42:25,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:42:25,098 INFO L402 AbstractCegarLoop]: === Iteration 7 === 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:42:25,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:42:25,099 INFO L85 PathProgramCache]: Analyzing trace with hash -2144407415, now seen corresponding path program 1 times [2021-11-25 18:42:25,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:42:25,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056211727] [2021-11-25 18:42:25,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:42:25,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:42:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:42:26,167 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11556 trivial. 0 not checked. [2021-11-25 18:42:26,167 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:42:26,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056211727] [2021-11-25 18:42:26,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056211727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:42:26,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:42:26,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:42:26,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431391258] [2021-11-25 18:42:26,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:42:26,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:42:26,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:42:26,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:42:26,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:42:26,170 INFO L87 Difference]: Start difference. First operand 26637 states and 38828 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-25 18:42:28,280 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:30,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:32,960 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:35,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:42:35,651 INFO L93 Difference]: Finished difference Result 77325 states and 112531 transitions. [2021-11-25 18:42:35,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:42:35,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 568 [2021-11-25 18:42:35,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:42:36,052 INFO L225 Difference]: With dead ends: 77325 [2021-11-25 18:42:36,052 INFO L226 Difference]: Without dead ends: 50797 [2021-11-25 18:42:36,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:42:36,145 INFO L933 BasicCegarLoop]: 1871 mSDtfsCounter, 1259 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1259 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:42:36,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1259 Valid, 3130 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 585 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2021-11-25 18:42:36,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50797 states. [2021-11-25 18:42:38,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50797 to 50776. [2021-11-25 18:42:38,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50776 states, 33965 states have (on average 1.384248491093773) internal successors, (47016), 34929 states have internal predecessors, (47016), 13334 states have call successors, (13334), 3475 states have call predecessors, (13334), 3474 states have return successors, (13330), 12953 states have call predecessors, (13330), 13330 states have call successors, (13330) [2021-11-25 18:42:38,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50776 states to 50776 states and 73680 transitions. [2021-11-25 18:42:38,757 INFO L78 Accepts]: Start accepts. Automaton has 50776 states and 73680 transitions. Word has length 568 [2021-11-25 18:42:38,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:42:38,758 INFO L470 AbstractCegarLoop]: Abstraction has 50776 states and 73680 transitions. [2021-11-25 18:42:38,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-25 18:42:38,759 INFO L276 IsEmpty]: Start isEmpty. Operand 50776 states and 73680 transitions. [2021-11-25 18:42:38,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2021-11-25 18:42:38,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:42:38,766 INFO L514 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:42:38,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:42:38,767 INFO L402 AbstractCegarLoop]: === Iteration 8 === 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:42:38,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:42:38,770 INFO L85 PathProgramCache]: Analyzing trace with hash -534735878, now seen corresponding path program 1 times [2021-11-25 18:42:38,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:42:38,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892709063] [2021-11-25 18:42:38,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:42:38,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:42:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:42:40,226 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11556 trivial. 0 not checked. [2021-11-25 18:42:40,227 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:42:40,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892709063] [2021-11-25 18:42:40,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892709063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:42:40,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:42:40,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:42:40,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924324043] [2021-11-25 18:42:40,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:42:40,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:42:40,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:42:40,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:42:40,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:42:40,230 INFO L87 Difference]: Start difference. First operand 50776 states and 73680 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-25 18:42:42,570 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:44,976 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:47,855 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:51,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:42:51,463 INFO L93 Difference]: Finished difference Result 138384 states and 200560 transitions. [2021-11-25 18:42:51,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:42:51,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 583 [2021-11-25 18:42:51,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:42:52,134 INFO L225 Difference]: With dead ends: 138384 [2021-11-25 18:42:52,134 INFO L226 Difference]: Without dead ends: 87717 [2021-11-25 18:42:52,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:42:52,281 INFO L933 BasicCegarLoop]: 1742 mSDtfsCounter, 1164 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 3003 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:42:52,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1164 Valid, 3003 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 524 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2021-11-25 18:42:52,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87717 states. [2021-11-25 18:42:55,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87717 to 87570. [2021-11-25 18:42:55,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87570 states, 58857 states have (on average 1.3789863567630019) internal successors, (81163), 60673 states have internal predecessors, (81163), 22511 states have call successors, (22511), 6200 states have call predecessors, (22511), 6199 states have return successors, (22507), 21620 states have call predecessors, (22507), 22507 states have call successors, (22507) [2021-11-25 18:42:55,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87570 states to 87570 states and 126181 transitions. [2021-11-25 18:42:55,689 INFO L78 Accepts]: Start accepts. Automaton has 87570 states and 126181 transitions. Word has length 583 [2021-11-25 18:42:55,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:42:55,691 INFO L470 AbstractCegarLoop]: Abstraction has 87570 states and 126181 transitions. [2021-11-25 18:42:55,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-25 18:42:55,691 INFO L276 IsEmpty]: Start isEmpty. Operand 87570 states and 126181 transitions. [2021-11-25 18:42:56,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2021-11-25 18:42:56,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:42:56,004 INFO L514 BasicCegarLoop]: trace histogram [58, 54, 54, 54, 54, 54, 54, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:42:56,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:42:56,004 INFO L402 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:42:56,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:42:56,005 INFO L85 PathProgramCache]: Analyzing trace with hash 931735747, now seen corresponding path program 1 times [2021-11-25 18:42:56,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:42:56,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539666428] [2021-11-25 18:42:56,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:42:56,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:42:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:42:57,422 INFO L134 CoverageAnalysis]: Checked inductivity of 11927 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11927 trivial. 0 not checked. [2021-11-25 18:42:57,422 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:42:57,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539666428] [2021-11-25 18:42:57,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539666428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:42:57,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:42:57,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:42:57,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377858824] [2021-11-25 18:42:57,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:42:57,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:42:57,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:42:57,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:42:57,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:42:57,426 INFO L87 Difference]: Start difference. First operand 87570 states and 126181 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-25 18:42:59,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:03,629 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:06,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:13,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:43:13,036 INFO L93 Difference]: Finished difference Result 171563 states and 249973 transitions. [2021-11-25 18:43:13,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:43:13,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 609 [2021-11-25 18:43:13,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:43:13,832 INFO L225 Difference]: With dead ends: 171563 [2021-11-25 18:43:13,833 INFO L226 Difference]: Without dead ends: 171561 [2021-11-25 18:43:13,892 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:43:13,893 INFO L933 BasicCegarLoop]: 1572 mSDtfsCounter, 1353 mSDsluCounter, 4955 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 5851 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:43:13,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1356 Valid, 5851 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 918 Invalid, 2 Unknown, 0 Unchecked, 11.9s Time] [2021-11-25 18:43:14,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171561 states. [2021-11-25 18:43:19,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171561 to 171429. [2021-11-25 18:43:19,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171429 states, 114707 states have (on average 1.3766465865204391) internal successors, (157911), 118465 states have internal predecessors, (157911), 44452 states have call successors, (44452), 12269 states have call predecessors, (44452), 12267 states have return successors, (47478), 42542 states have call predecessors, (47478), 44444 states have call successors, (47478) [2021-11-25 18:43:21,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171429 states to 171429 states and 249841 transitions. [2021-11-25 18:43:21,159 INFO L78 Accepts]: Start accepts. Automaton has 171429 states and 249841 transitions. Word has length 609 [2021-11-25 18:43:21,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:43:21,161 INFO L470 AbstractCegarLoop]: Abstraction has 171429 states and 249841 transitions. [2021-11-25 18:43:21,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-25 18:43:21,162 INFO L276 IsEmpty]: Start isEmpty. Operand 171429 states and 249841 transitions. [2021-11-25 18:43:21,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2021-11-25 18:43:21,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:43:21,170 INFO L514 BasicCegarLoop]: trace histogram [56, 54, 54, 54, 54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:43:21,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 18:43:21,170 INFO L402 AbstractCegarLoop]: === Iteration 10 === 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:43:21,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:43:21,171 INFO L85 PathProgramCache]: Analyzing trace with hash 860284638, now seen corresponding path program 1 times [2021-11-25 18:43:21,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:43:21,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501963024] [2021-11-25 18:43:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:43:21,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:43:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:43:22,634 INFO L134 CoverageAnalysis]: Checked inductivity of 11676 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 11666 trivial. 0 not checked. [2021-11-25 18:43:22,635 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:43:22,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501963024] [2021-11-25 18:43:22,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501963024] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:43:22,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:43:22,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:43:22,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135345447] [2021-11-25 18:43:22,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:43:22,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:43:22,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:43:22,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:43:22,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:43:22,638 INFO L87 Difference]: Start difference. First operand 171429 states and 249841 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-25 18:43:24,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:27,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:29,480 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []