./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 22e4387c36ff25592bf6c6537ff8412eacb18bdab6752c222fa8ef2a1ca9dbb8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:47:24,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:47:24,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:47:24,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:47:24,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:47:24,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:47:24,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:47:24,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:47:24,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:47:24,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:47:24,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:47:24,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:47:24,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:47:24,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:47:24,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:47:24,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:47:24,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:47:24,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:47:24,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:47:24,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:47:24,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:47:24,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:47:24,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:47:24,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:47:24,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:47:24,667 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:47:24,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:47:24,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:47:24,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:47:24,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:47:24,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:47:24,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:47:24,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:47:24,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:47:24,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:47:24,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:47:24,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:47:24,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:47:24,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:47:24,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:47:24,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:47:24,686 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:47:24,735 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:47:24,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:47:24,736 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:47:24,737 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:47:24,738 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:47:24,738 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:47:24,739 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:47:24,739 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:47:24,739 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:47:24,740 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:47:24,741 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:47:24,741 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:47:24,742 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:47:24,742 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:47:24,742 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:47:24,743 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:47:24,743 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:47:24,743 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:47:24,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:47:24,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:47:24,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:47:24,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:47:24,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:47:24,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:47:24,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:47:24,748 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:47:24,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:47:24,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:47:24,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:47:24,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:47:24,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:47:24,751 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:47:24,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:47:24,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:47:24,752 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:47:24,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:47:24,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:47:24,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:47:24,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22e4387c36ff25592bf6c6537ff8412eacb18bdab6752c222fa8ef2a1ca9dbb8 [2022-11-03 03:47:25,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:47:25,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:47:25,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:47:25,211 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:47:25,212 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:47:25,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i [2022-11-03 03:47:25,311 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/bin/utaipan-7li7fVZpFI/data/16a8215b8/ead8384342544c55b8e1a9e484f6eb7b/FLAG0c338f610 [2022-11-03 03:47:26,383 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:47:26,385 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i [2022-11-03 03:47:26,449 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/bin/utaipan-7li7fVZpFI/data/16a8215b8/ead8384342544c55b8e1a9e484f6eb7b/FLAG0c338f610 [2022-11-03 03:47:26,725 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/bin/utaipan-7li7fVZpFI/data/16a8215b8/ead8384342544c55b8e1a9e484f6eb7b [2022-11-03 03:47:26,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:47:26,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:47:26,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:47:26,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:47:26,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:47:26,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:47:26" (1/1) ... [2022-11-03 03:47:26,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b988f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:26, skipping insertion in model container [2022-11-03 03:47:26,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:47:26" (1/1) ... [2022-11-03 03:47:26,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:47:26,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:47:29,687 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_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284136,284149] [2022-11-03 03:47:29,690 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_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284302,284315] [2022-11-03 03:47:29,691 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284466,284479] [2022-11-03 03:47:29,691 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284631,284644] [2022-11-03 03:47:29,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:47:29,778 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:47:30,301 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_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284136,284149] [2022-11-03 03:47:30,305 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_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284302,284315] [2022-11-03 03:47:30,306 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_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284466,284479] [2022-11-03 03:47:30,306 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_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284631,284644] [2022-11-03 03:47:30,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:47:30,451 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:47:30,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:30 WrapperNode [2022-11-03 03:47:30,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:47:30,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:47:30,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:47:30,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:47:30,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:30" (1/1) ... [2022-11-03 03:47:30,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:30" (1/1) ... [2022-11-03 03:47:30,782 INFO L138 Inliner]: procedures = 343, calls = 2811, calls flagged for inlining = 190, calls inlined = 160, statements flattened = 4838 [2022-11-03 03:47:30,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:47:30,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:47:30,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:47:30,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:47:30,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:30" (1/1) ... [2022-11-03 03:47:30,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:30" (1/1) ... [2022-11-03 03:47:30,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:30" (1/1) ... [2022-11-03 03:47:30,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:30" (1/1) ... [2022-11-03 03:47:31,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:30" (1/1) ... [2022-11-03 03:47:31,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:30" (1/1) ... [2022-11-03 03:47:31,113 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:30" (1/1) ... [2022-11-03 03:47:31,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:30" (1/1) ... [2022-11-03 03:47:31,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:47:31,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:47:31,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:47:31,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:47:31,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:30" (1/1) ... [2022-11-03 03:47:31,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:47:31,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:47:31,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:47:31,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cac4f848-a6c8-4bc4-86dc-58fbee6807d4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:47:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-03 03:47:31,286 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-03 03:47:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-03 03:47:31,287 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-03 03:47:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-03 03:47:31,287 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-03 03:47:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-03 03:47:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:47:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:47:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:47:31,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:47:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:47:31,288 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:47:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2022-11-03 03:47:31,289 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2022-11-03 03:47:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 03:47:31,289 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 03:47:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2022-11-03 03:47:31,290 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2022-11-03 03:47:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:47:31,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:47:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2022-11-03 03:47:31,290 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2022-11-03 03:47:31,291 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2022-11-03 03:47:31,291 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2022-11-03 03:47:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2022-11-03 03:47:31,292 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2022-11-03 03:47:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2022-11-03 03:47:31,292 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2022-11-03 03:47:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_imon_context [2022-11-03 03:47:31,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_imon_context [2022-11-03 03:47:31,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_5_4 [2022-11-03 03:47:31,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_5_4 [2022-11-03 03:47:31,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2022-11-03 03:47:31,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2022-11-03 03:47:31,294 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 03:47:31,294 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 03:47:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_driver_lock [2022-11-03 03:47:31,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_driver_lock [2022-11-03 03:47:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:47:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-11-03 03:47:31,296 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-11-03 03:47:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:47:31,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 03:47:31,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 03:47:31,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 03:47:31,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 03:47:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-03 03:47:31,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-03 03:47:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2022-11-03 03:47:31,301 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2022-11-03 03:47:31,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:47:31,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:47:31,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_imon_driver_exit_11_2 [2022-11-03 03:47:31,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_imon_driver_exit_11_2 [2022-11-03 03:47:31,303 INFO L130 BoogieDeclarations]: Found specification of procedure imon_resume [2022-11-03 03:47:31,303 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_resume [2022-11-03 03:47:31,303 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 03:47:31,304 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 03:47:31,304 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-03 03:47:31,304 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-03 03:47:31,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 03:47:31,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 03:47:31,305 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2022-11-03 03:47:31,305 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2022-11-03 03:47:31,306 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2022-11-03 03:47:31,306 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2022-11-03 03:47:31,306 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-03 03:47:31,307 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-03 03:47:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:47:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 03:47:31,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 03:47:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-03 03:47:31,308 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-03 03:47:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2022-11-03 03:47:31,308 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2022-11-03 03:47:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:47:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 03:47:31,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 03:47:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2022-11-03 03:47:31,310 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2022-11-03 03:47:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2022-11-03 03:47:31,312 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2022-11-03 03:47:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:47:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-03 03:47:31,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-03 03:47:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-03 03:47:31,314 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-03 03:47:31,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:47:31,314 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:47:31,314 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 03:47:31,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 03:47:31,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 03:47:31,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 03:47:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 03:47:31,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 03:47:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-03 03:47:31,317 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-03 03:47:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-11-03 03:47:31,317 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-11-03 03:47:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:47:31,317 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:47:31,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-03 03:47:31,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-03 03:47:31,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:47:31,324 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2022-11-03 03:47:31,325 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2022-11-03 03:47:31,325 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2022-11-03 03:47:31,325 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2022-11-03 03:47:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2022-11-03 03:47:31,326 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2022-11-03 03:47:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:47:31,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:47:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:47:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 03:47:31,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 03:47:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2022-11-03 03:47:31,334 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2022-11-03 03:47:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_imon_context [2022-11-03 03:47:31,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_imon_context [2022-11-03 03:47:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-03 03:47:31,334 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-03 03:47:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:47:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 03:47:31,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 03:47:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:47:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2022-11-03 03:47:31,336 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2022-11-03 03:47:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 03:47:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2022-11-03 03:47:31,336 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2022-11-03 03:47:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2022-11-03 03:47:31,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2022-11-03 03:47:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:47:31,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:47:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2022-11-03 03:47:31,337 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2022-11-03 03:47:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-03 03:47:31,338 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-03 03:47:31,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 03:47:31,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 03:47:31,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_driver_lock [2022-11-03 03:47:31,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_driver_lock [2022-11-03 03:47:31,339 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2022-11-03 03:47:31,339 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2022-11-03 03:47:31,339 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2022-11-03 03:47:31,339 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2022-11-03 03:47:31,339 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2022-11-03 03:47:31,340 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2022-11-03 03:47:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:47:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-03 03:47:31,340 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-03 03:47:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 03:47:31,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 03:47:31,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:47:31,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:47:32,376 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:47:32,393 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:47:32,781 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:47:59,737 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 03:47:59,809 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:48:00,710 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:48:00,710 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-03 03:48:00,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:48:00 BoogieIcfgContainer [2022-11-03 03:48:00,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:48:00,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:48:00,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:48:00,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:48:00,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:47:26" (1/3) ... [2022-11-03 03:48:00,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a43a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:48:00, skipping insertion in model container [2022-11-03 03:48:00,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:30" (2/3) ... [2022-11-03 03:48:00,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a43a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:48:00, skipping insertion in model container [2022-11-03 03:48:00,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:48:00" (3/3) ... [2022-11-03 03:48:00,727 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i [2022-11-03 03:48:00,753 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:48:00,753 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 03:48:00,849 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:48:00,857 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@54337d6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:48:00,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 03:48:00,866 INFO L276 IsEmpty]: Start isEmpty. Operand has 1076 states, 656 states have (on average 1.3094512195121952) internal successors, (859), 665 states have internal predecessors, (859), 350 states have call successors, (350), 69 states have call predecessors, (350), 68 states have return successors, (344), 343 states have call predecessors, (344), 344 states have call successors, (344) [2022-11-03 03:48:00,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-03 03:48:00,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:00,892 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:00,893 INFO L420 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)] === [2022-11-03 03:48:00,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:00,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1515646039, now seen corresponding path program 1 times [2022-11-03 03:48:00,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:00,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258712455] [2022-11-03 03:48:00,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:00,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:02,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2022-11-03 03:48:02,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:02,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258712455] [2022-11-03 03:48:02,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258712455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:02,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:02,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:48:02,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796768151] [2022-11-03 03:48:02,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:02,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:48:02,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:02,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:48:02,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:02,343 INFO L87 Difference]: Start difference. First operand has 1076 states, 656 states have (on average 1.3094512195121952) internal successors, (859), 665 states have internal predecessors, (859), 350 states have call successors, (350), 69 states have call predecessors, (350), 68 states have return successors, (344), 343 states have call predecessors, (344), 344 states have call successors, (344) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:48:05,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:07,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:10,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:10,702 INFO L93 Difference]: Finished difference Result 3056 states and 4520 transitions. [2022-11-03 03:48:10,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:48:10,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 208 [2022-11-03 03:48:10,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:10,738 INFO L225 Difference]: With dead ends: 3056 [2022-11-03 03:48:10,738 INFO L226 Difference]: Without dead ends: 2004 [2022-11-03 03:48:10,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:10,755 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 1351 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 2914 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:10,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1351 Valid, 2914 Invalid, 481 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 468 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2022-11-03 03:48:10,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2022-11-03 03:48:10,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1984. [2022-11-03 03:48:11,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1984 states, 1224 states have (on average 1.2998366013071896) internal successors, (1591), 1248 states have internal predecessors, (1591), 624 states have call successors, (624), 134 states have call predecessors, (624), 133 states have return successors, (620), 613 states have call predecessors, (620), 620 states have call successors, (620) [2022-11-03 03:48:11,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1984 states to 1984 states and 2835 transitions. [2022-11-03 03:48:11,031 INFO L78 Accepts]: Start accepts. Automaton has 1984 states and 2835 transitions. Word has length 208 [2022-11-03 03:48:11,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:11,036 INFO L495 AbstractCegarLoop]: Abstraction has 1984 states and 2835 transitions. [2022-11-03 03:48:11,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:48:11,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1984 states and 2835 transitions. [2022-11-03 03:48:11,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-03 03:48:11,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:11,059 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:11,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:48:11,061 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:48:11,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:11,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1238421989, now seen corresponding path program 1 times [2022-11-03 03:48:11,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:11,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461993068] [2022-11-03 03:48:11,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:11,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:12,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2022-11-03 03:48:12,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:12,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461993068] [2022-11-03 03:48:12,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461993068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:12,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:12,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:48:12,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038317102] [2022-11-03 03:48:12,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:12,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:48:12,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:12,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:48:12,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:48:12,646 INFO L87 Difference]: Start difference. First operand 1984 states and 2835 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:48:18,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:19,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:20,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:23,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:25,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:27,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:32,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:32,439 INFO L93 Difference]: Finished difference Result 7373 states and 10488 transitions. [2022-11-03 03:48:32,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:48:32,440 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 209 [2022-11-03 03:48:32,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:32,481 INFO L225 Difference]: With dead ends: 7373 [2022-11-03 03:48:32,481 INFO L226 Difference]: Without dead ends: 5428 [2022-11-03 03:48:32,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:48:32,499 INFO L413 NwaCegarLoop]: 1944 mSDtfsCounter, 4099 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 720 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4284 SdHoareTripleChecker+Valid, 4141 SdHoareTripleChecker+Invalid, 3249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 720 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:32,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4284 Valid, 4141 Invalid, 3249 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [720 Valid, 2528 Invalid, 1 Unknown, 0 Unchecked, 19.2s Time] [2022-11-03 03:48:32,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5428 states. [2022-11-03 03:48:32,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5428 to 5384. [2022-11-03 03:48:32,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5384 states, 3348 states have (on average 1.2983870967741935) internal successors, (4347), 3420 states have internal predecessors, (4347), 1650 states have call successors, (1650), 384 states have call predecessors, (1650), 383 states have return successors, (1646), 1615 states have call predecessors, (1646), 1646 states have call successors, (1646) [2022-11-03 03:48:32,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5384 states to 5384 states and 7643 transitions. [2022-11-03 03:48:32,955 INFO L78 Accepts]: Start accepts. Automaton has 5384 states and 7643 transitions. Word has length 209 [2022-11-03 03:48:32,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:32,956 INFO L495 AbstractCegarLoop]: Abstraction has 5384 states and 7643 transitions. [2022-11-03 03:48:32,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:48:32,957 INFO L276 IsEmpty]: Start isEmpty. Operand 5384 states and 7643 transitions. [2022-11-03 03:48:32,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-03 03:48:32,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:32,962 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:32,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:48:32,963 INFO L420 AbstractCegarLoop]: === Iteration 3 === 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)] === [2022-11-03 03:48:32,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:32,964 INFO L85 PathProgramCache]: Analyzing trace with hash -463485419, now seen corresponding path program 1 times [2022-11-03 03:48:32,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:32,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446488822] [2022-11-03 03:48:32,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:32,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:33,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2022-11-03 03:48:33,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:33,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446488822] [2022-11-03 03:48:33,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446488822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:33,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:33,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:48:33,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841058751] [2022-11-03 03:48:33,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:33,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:48:33,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:33,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:48:33,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:33,455 INFO L87 Difference]: Start difference. First operand 5384 states and 7643 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-03 03:48:35,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:36,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:39,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:40,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:41,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:41,707 INFO L93 Difference]: Finished difference Result 12406 states and 17560 transitions. [2022-11-03 03:48:41,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:48:41,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 214 [2022-11-03 03:48:41,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:41,749 INFO L225 Difference]: With dead ends: 12406 [2022-11-03 03:48:41,749 INFO L226 Difference]: Without dead ends: 7061 [2022-11-03 03:48:41,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:41,767 INFO L413 NwaCegarLoop]: 1638 mSDtfsCounter, 1263 mSDsluCounter, 1465 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:41,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1263 Valid, 2898 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-03 03:48:41,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7061 states. [2022-11-03 03:48:42,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7061 to 7057. [2022-11-03 03:48:42,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7057 states, 4407 states have (on average 1.2936237803494441) internal successors, (5701), 4493 states have internal predecessors, (5701), 2129 states have call successors, (2129), 519 states have call predecessors, (2129), 518 states have return successors, (2125), 2092 states have call predecessors, (2125), 2125 states have call successors, (2125) [2022-11-03 03:48:42,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7057 states to 7057 states and 9955 transitions. [2022-11-03 03:48:42,208 INFO L78 Accepts]: Start accepts. Automaton has 7057 states and 9955 transitions. Word has length 214 [2022-11-03 03:48:42,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:42,210 INFO L495 AbstractCegarLoop]: Abstraction has 7057 states and 9955 transitions. [2022-11-03 03:48:42,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-03 03:48:42,245 INFO L276 IsEmpty]: Start isEmpty. Operand 7057 states and 9955 transitions. [2022-11-03 03:48:42,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-03 03:48:42,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:42,248 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:42,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:48:42,248 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:48:42,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:42,249 INFO L85 PathProgramCache]: Analyzing trace with hash -253542544, now seen corresponding path program 1 times [2022-11-03 03:48:42,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:42,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248304535] [2022-11-03 03:48:42,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:42,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:42,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2022-11-03 03:48:42,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:42,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248304535] [2022-11-03 03:48:42,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248304535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:42,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:42,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:48:42,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395537794] [2022-11-03 03:48:42,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:42,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:48:42,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:42,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:48:42,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:42,695 INFO L87 Difference]: Start difference. First operand 7057 states and 9955 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 03:48:48,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:48,307 INFO L93 Difference]: Finished difference Result 19066 states and 26871 transitions. [2022-11-03 03:48:48,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:48:48,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 213 [2022-11-03 03:48:48,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:48,378 INFO L225 Difference]: With dead ends: 19066 [2022-11-03 03:48:48,378 INFO L226 Difference]: Without dead ends: 12048 [2022-11-03 03:48:48,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:48,404 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1365 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1365 SdHoareTripleChecker+Valid, 2886 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:48,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1365 Valid, 2886 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-03 03:48:48,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12048 states. [2022-11-03 03:48:49,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12048 to 12018. [2022-11-03 03:48:49,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12018 states, 7491 states have (on average 1.2920838339340541) internal successors, (9679), 7659 states have internal predecessors, (9679), 3614 states have call successors, (3614), 911 states have call predecessors, (3614), 910 states have return successors, (3610), 3531 states have call predecessors, (3610), 3610 states have call successors, (3610) [2022-11-03 03:48:49,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12018 states to 12018 states and 16903 transitions. [2022-11-03 03:48:49,217 INFO L78 Accepts]: Start accepts. Automaton has 12018 states and 16903 transitions. Word has length 213 [2022-11-03 03:48:49,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:49,221 INFO L495 AbstractCegarLoop]: Abstraction has 12018 states and 16903 transitions. [2022-11-03 03:48:49,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 03:48:49,221 INFO L276 IsEmpty]: Start isEmpty. Operand 12018 states and 16903 transitions. [2022-11-03 03:48:49,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-03 03:48:49,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:49,226 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:49,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:48:49,226 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:48:49,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:49,227 INFO L85 PathProgramCache]: Analyzing trace with hash 900258675, now seen corresponding path program 1 times [2022-11-03 03:48:49,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:49,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225903909] [2022-11-03 03:48:49,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:49,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:49,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2022-11-03 03:48:49,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:49,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225903909] [2022-11-03 03:48:49,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225903909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:49,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:49,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:48:49,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833225131] [2022-11-03 03:48:49,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:49,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:48:49,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:49,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:48:49,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:49,589 INFO L87 Difference]: Start difference. First operand 12018 states and 16903 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 03:48:52,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:53,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:55,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:57,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:57,546 INFO L93 Difference]: Finished difference Result 32985 states and 46305 transitions. [2022-11-03 03:48:57,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:48:57,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 214 [2022-11-03 03:48:57,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:57,654 INFO L225 Difference]: With dead ends: 32985 [2022-11-03 03:48:57,654 INFO L226 Difference]: Without dead ends: 21006 [2022-11-03 03:48:57,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:57,703 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1361 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 2981 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:57,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1361 Valid, 2981 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-03 03:48:57,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21006 states. [2022-11-03 03:48:59,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21006 to 20976. [2022-11-03 03:48:59,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20976 states, 13016 states have (on average 1.2861094038106946) internal successors, (16740), 13341 states have internal predecessors, (16740), 6314 states have call successors, (6314), 1644 states have call predecessors, (6314), 1643 states have return successors, (6310), 6140 states have call predecessors, (6310), 6310 states have call successors, (6310) [2022-11-03 03:48:59,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20976 states to 20976 states and 29364 transitions. [2022-11-03 03:48:59,316 INFO L78 Accepts]: Start accepts. Automaton has 20976 states and 29364 transitions. Word has length 214 [2022-11-03 03:48:59,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:59,316 INFO L495 AbstractCegarLoop]: Abstraction has 20976 states and 29364 transitions. [2022-11-03 03:48:59,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 03:48:59,317 INFO L276 IsEmpty]: Start isEmpty. Operand 20976 states and 29364 transitions. [2022-11-03 03:48:59,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-03 03:48:59,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:59,321 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:59,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:48:59,322 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:48:59,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:59,322 INFO L85 PathProgramCache]: Analyzing trace with hash 864183381, now seen corresponding path program 1 times [2022-11-03 03:48:59,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:59,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716092904] [2022-11-03 03:48:59,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:59,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:59,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2022-11-03 03:48:59,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:59,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716092904] [2022-11-03 03:48:59,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716092904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:59,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:59,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:48:59,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195377739] [2022-11-03 03:48:59,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:59,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:48:59,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:59,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:48:59,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:59,712 INFO L87 Difference]: Start difference. First operand 20976 states and 29364 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 03:49:03,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:04,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:06,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:09,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:09,376 INFO L93 Difference]: Finished difference Result 51589 states and 72026 transitions. [2022-11-03 03:49:09,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:49:09,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 219 [2022-11-03 03:49:09,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:09,615 INFO L225 Difference]: With dead ends: 51589 [2022-11-03 03:49:09,616 INFO L226 Difference]: Without dead ends: 30652 [2022-11-03 03:49:09,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:09,680 INFO L413 NwaCegarLoop]: 1486 mSDtfsCounter, 814 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 2756 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:09,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 2756 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 477 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2022-11-03 03:49:09,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30652 states. [2022-11-03 03:49:11,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30652 to 30584. [2022-11-03 03:49:11,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30584 states, 19186 states have (on average 1.2809340143854895) internal successors, (24576), 19709 states have internal predecessors, (24576), 8902 states have call successors, (8902), 2494 states have call predecessors, (8902), 2493 states have return successors, (8898), 8530 states have call predecessors, (8898), 8898 states have call successors, (8898) [2022-11-03 03:49:12,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30584 states to 30584 states and 42376 transitions. [2022-11-03 03:49:12,300 INFO L78 Accepts]: Start accepts. Automaton has 30584 states and 42376 transitions. Word has length 219 [2022-11-03 03:49:12,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:12,301 INFO L495 AbstractCegarLoop]: Abstraction has 30584 states and 42376 transitions. [2022-11-03 03:49:12,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 03:49:12,301 INFO L276 IsEmpty]: Start isEmpty. Operand 30584 states and 42376 transitions. [2022-11-03 03:49:12,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-03 03:49:12,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:12,308 INFO L195 NwaCegarLoop]: trace histogram [21, 19, 19, 19, 19, 19, 19, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:12,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:49:12,311 INFO L420 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)] === [2022-11-03 03:49:12,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:12,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1012551494, now seen corresponding path program 1 times [2022-11-03 03:49:12,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:49:12,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150510823] [2022-11-03 03:49:12,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:12,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:49:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:12,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1449 trivial. 0 not checked. [2022-11-03 03:49:12,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:49:12,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150510823] [2022-11-03 03:49:12,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150510823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:12,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:12,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:49:12,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116938692] [2022-11-03 03:49:12,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:12,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:49:12,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:49:12,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:49:12,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:12,680 INFO L87 Difference]: Start difference. First operand 30584 states and 42376 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-03 03:49:17,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:18,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:20,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:24,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:24,377 INFO L93 Difference]: Finished difference Result 69940 states and 96638 transitions. [2022-11-03 03:49:24,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:49:24,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 239 [2022-11-03 03:49:24,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:24,545 INFO L225 Difference]: With dead ends: 69940 [2022-11-03 03:49:24,545 INFO L226 Difference]: Without dead ends: 39395 [2022-11-03 03:49:24,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:24,634 INFO L413 NwaCegarLoop]: 1884 mSDtfsCounter, 806 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:24,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 3174 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 541 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-11-03 03:49:24,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39395 states. [2022-11-03 03:49:27,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39395 to 39331. [2022-11-03 03:49:27,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39331 states, 24816 states have (on average 1.2776837524177949) internal successors, (31707), 25502 states have internal predecessors, (31707), 11251 states have call successors, (11251), 3286 states have call predecessors, (11251), 3261 states have return successors, (11247), 10686 states have call predecessors, (11247), 11247 states have call successors, (11247) [2022-11-03 03:49:27,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39331 states to 39331 states and 54205 transitions. [2022-11-03 03:49:27,524 INFO L78 Accepts]: Start accepts. Automaton has 39331 states and 54205 transitions. Word has length 239 [2022-11-03 03:49:27,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:27,526 INFO L495 AbstractCegarLoop]: Abstraction has 39331 states and 54205 transitions. [2022-11-03 03:49:27,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-03 03:49:27,527 INFO L276 IsEmpty]: Start isEmpty. Operand 39331 states and 54205 transitions. [2022-11-03 03:49:27,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-11-03 03:49:27,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:27,529 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 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] [2022-11-03 03:49:27,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:49:27,530 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:49:27,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:27,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1978279404, now seen corresponding path program 1 times [2022-11-03 03:49:27,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:49:27,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081981764] [2022-11-03 03:49:27,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:27,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:49:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:28,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1567 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1567 trivial. 0 not checked. [2022-11-03 03:49:28,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:49:28,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081981764] [2022-11-03 03:49:28,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081981764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:28,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:28,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:49:28,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423679022] [2022-11-03 03:49:28,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:28,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:49:28,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:49:28,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:49:28,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:49:28,979 INFO L87 Difference]: Start difference. First operand 39331 states and 54205 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 03:49:33,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:35,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:39,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:39,943 INFO L93 Difference]: Finished difference Result 42965 states and 57996 transitions. [2022-11-03 03:49:39,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:49:39,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 259 [2022-11-03 03:49:39,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:40,142 INFO L225 Difference]: With dead ends: 42965 [2022-11-03 03:49:40,143 INFO L226 Difference]: Without dead ends: 42963 [2022-11-03 03:49:40,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:49:40,164 INFO L413 NwaCegarLoop]: 1315 mSDtfsCounter, 954 mSDsluCounter, 3674 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 4458 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:40,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 4458 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 762 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-11-03 03:49:40,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42963 states. [2022-11-03 03:49:42,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42963 to 42959. [2022-11-03 03:49:42,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42959 states, 26950 states have (on average 1.2674582560296845) internal successors, (34158), 27636 states have internal predecessors, (34158), 11919 states have call successors, (11919), 4112 states have call predecessors, (11919), 4087 states have return successors, (11915), 11354 states have call predecessors, (11915), 11915 states have call successors, (11915) [2022-11-03 03:49:42,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42959 states to 42959 states and 57992 transitions. [2022-11-03 03:49:42,796 INFO L78 Accepts]: Start accepts. Automaton has 42959 states and 57992 transitions. Word has length 259 [2022-11-03 03:49:42,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:42,797 INFO L495 AbstractCegarLoop]: Abstraction has 42959 states and 57992 transitions. [2022-11-03 03:49:42,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 03:49:42,797 INFO L276 IsEmpty]: Start isEmpty. Operand 42959 states and 57992 transitions. [2022-11-03 03:49:42,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-11-03 03:49:42,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:42,801 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 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] [2022-11-03 03:49:42,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:49:42,802 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:49:42,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:42,802 INFO L85 PathProgramCache]: Analyzing trace with hash 2109319709, now seen corresponding path program 1 times [2022-11-03 03:49:42,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:49:42,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712821837] [2022-11-03 03:49:42,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:42,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:49:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:44,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1566 trivial. 0 not checked. [2022-11-03 03:49:44,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:49:44,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712821837] [2022-11-03 03:49:44,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712821837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:44,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:44,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:49:44,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498141545] [2022-11-03 03:49:44,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:44,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:49:44,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:49:44,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:49:44,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:49:44,106 INFO L87 Difference]: Start difference. First operand 42959 states and 57992 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 03:49:49,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:54,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:54,988 INFO L93 Difference]: Finished difference Result 42965 states and 57997 transitions. [2022-11-03 03:49:54,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:49:54,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 263 [2022-11-03 03:49:54,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:55,172 INFO L225 Difference]: With dead ends: 42965 [2022-11-03 03:49:55,173 INFO L226 Difference]: Without dead ends: 42963 [2022-11-03 03:49:55,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:49:55,195 INFO L413 NwaCegarLoop]: 1297 mSDtfsCounter, 1446 mSDsluCounter, 3016 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 3879 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:55,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 3879 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 662 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-11-03 03:49:55,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42963 states. [2022-11-03 03:49:57,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42963 to 42963. [2022-11-03 03:49:57,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42963 states, 26953 states have (on average 1.2674284866248655) internal successors, (34161), 27639 states have internal predecessors, (34161), 11919 states have call successors, (11919), 4113 states have call predecessors, (11919), 4088 states have return successors, (11915), 11354 states have call predecessors, (11915), 11915 states have call successors, (11915) [2022-11-03 03:49:58,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42963 states to 42963 states and 57995 transitions. [2022-11-03 03:49:58,006 INFO L78 Accepts]: Start accepts. Automaton has 42963 states and 57995 transitions. Word has length 263 [2022-11-03 03:49:58,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:58,007 INFO L495 AbstractCegarLoop]: Abstraction has 42963 states and 57995 transitions. [2022-11-03 03:49:58,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 03:49:58,007 INFO L276 IsEmpty]: Start isEmpty. Operand 42963 states and 57995 transitions. [2022-11-03 03:49:58,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-11-03 03:49:58,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:58,012 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:58,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:49:58,012 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:49:58,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:58,013 INFO L85 PathProgramCache]: Analyzing trace with hash 15363818, now seen corresponding path program 1 times [2022-11-03 03:49:58,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:49:58,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447648120] [2022-11-03 03:49:58,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:58,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:49:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:59,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1574 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1570 trivial. 0 not checked. [2022-11-03 03:49:59,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:49:59,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447648120] [2022-11-03 03:49:59,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447648120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:59,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:59,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:49:59,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006033720] [2022-11-03 03:49:59,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:59,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:49:59,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:49:59,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:49:59,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:49:59,118 INFO L87 Difference]: Start difference. First operand 42963 states and 57995 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 03:50:03,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:04,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:06,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:11,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:11,350 INFO L93 Difference]: Finished difference Result 42969 states and 58000 transitions. [2022-11-03 03:50:11,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:50:11,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 268 [2022-11-03 03:50:11,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:11,531 INFO L225 Difference]: With dead ends: 42969 [2022-11-03 03:50:11,531 INFO L226 Difference]: Without dead ends: 42967 [2022-11-03 03:50:11,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:50:11,548 INFO L413 NwaCegarLoop]: 1297 mSDtfsCounter, 1446 mSDsluCounter, 3016 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 3879 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:11,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1448 Valid, 3879 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 662 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2022-11-03 03:50:11,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42967 states. [2022-11-03 03:50:14,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42967 to 42967. [2022-11-03 03:50:14,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42967 states, 26956 states have (on average 1.267398723846268) internal successors, (34164), 27642 states have internal predecessors, (34164), 11919 states have call successors, (11919), 4114 states have call predecessors, (11919), 4089 states have return successors, (11915), 11354 states have call predecessors, (11915), 11915 states have call successors, (11915) [2022-11-03 03:50:14,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42967 states to 42967 states and 57998 transitions. [2022-11-03 03:50:14,241 INFO L78 Accepts]: Start accepts. Automaton has 42967 states and 57998 transitions. Word has length 268 [2022-11-03 03:50:14,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:14,242 INFO L495 AbstractCegarLoop]: Abstraction has 42967 states and 57998 transitions. [2022-11-03 03:50:14,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 03:50:14,243 INFO L276 IsEmpty]: Start isEmpty. Operand 42967 states and 57998 transitions. [2022-11-03 03:50:14,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-11-03 03:50:14,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:14,256 INFO L195 NwaCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:50:14,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:50:14,257 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:50:14,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:14,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1902010513, now seen corresponding path program 1 times [2022-11-03 03:50:14,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:50:14,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875363053] [2022-11-03 03:50:14,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:14,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:50:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1612 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1605 trivial. 0 not checked. [2022-11-03 03:50:14,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:50:14,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875363053] [2022-11-03 03:50:14,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875363053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:14,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:50:14,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:50:14,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364602806] [2022-11-03 03:50:14,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:14,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:50:14,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:50:14,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:50:14,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:50:14,719 INFO L87 Difference]: Start difference. First operand 42967 states and 57998 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 03:50:22,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:27,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:27,038 INFO L93 Difference]: Finished difference Result 104575 states and 141278 transitions. [2022-11-03 03:50:27,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:50:27,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 269 [2022-11-03 03:50:27,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:27,303 INFO L225 Difference]: With dead ends: 104575 [2022-11-03 03:50:27,304 INFO L226 Difference]: Without dead ends: 61741 [2022-11-03 03:50:27,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:50:27,413 INFO L413 NwaCegarLoop]: 2294 mSDtfsCounter, 1342 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:27,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1342 Valid, 3557 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 624 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2022-11-03 03:50:27,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61741 states. [2022-11-03 03:50:30,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61741 to 61687. [2022-11-03 03:50:30,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61687 states, 38793 states have (on average 1.266620266542933) internal successors, (49136), 39833 states have internal predecessors, (49136), 16987 states have call successors, (16987), 5941 states have call predecessors, (16987), 5904 states have return successors, (16983), 16128 states have call predecessors, (16983), 16983 states have call successors, (16983) [2022-11-03 03:50:30,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61687 states to 61687 states and 83106 transitions. [2022-11-03 03:50:30,976 INFO L78 Accepts]: Start accepts. Automaton has 61687 states and 83106 transitions. Word has length 269 [2022-11-03 03:50:30,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:30,977 INFO L495 AbstractCegarLoop]: Abstraction has 61687 states and 83106 transitions. [2022-11-03 03:50:30,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 03:50:30,978 INFO L276 IsEmpty]: Start isEmpty. Operand 61687 states and 83106 transitions. [2022-11-03 03:50:30,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-11-03 03:50:30,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:30,984 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:50:30,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:50:30,984 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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)] === [2022-11-03 03:50:30,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:30,985 INFO L85 PathProgramCache]: Analyzing trace with hash 261867291, now seen corresponding path program 1 times [2022-11-03 03:50:30,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:50:30,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398218775] [2022-11-03 03:50:30,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:30,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:50:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1585 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1579 trivial. 0 not checked. [2022-11-03 03:50:32,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:50:32,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398218775] [2022-11-03 03:50:32,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398218775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:32,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:50:32,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:50:32,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702865489] [2022-11-03 03:50:32,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:32,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:50:32,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:50:32,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:50:32,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:50:32,119 INFO L87 Difference]: Start difference. First operand 61687 states and 83106 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-03 03:50:36,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:37,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:38,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:41,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:48,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:48,306 INFO L93 Difference]: Finished difference Result 65479 states and 86624 transitions. [2022-11-03 03:50:48,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:50:48,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 274 [2022-11-03 03:50:48,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:48,735 INFO L225 Difference]: With dead ends: 65479 [2022-11-03 03:50:48,736 INFO L226 Difference]: Without dead ends: 65475 [2022-11-03 03:50:48,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:50:48,761 INFO L413 NwaCegarLoop]: 1317 mSDtfsCounter, 929 mSDsluCounter, 3647 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 4435 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:48,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 4435 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 760 Invalid, 1 Unknown, 0 Unchecked, 12.7s Time] [2022-11-03 03:50:48,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65475 states. [2022-11-03 03:50:52,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65475 to 65473. [2022-11-03 03:50:52,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65473 states, 40863 states have (on average 1.2574945549763845) internal successors, (51385), 41902 states have internal predecessors, (51385), 17619 states have call successors, (17619), 7026 states have call predecessors, (17619), 6988 states have return successors, (17615), 16760 states have call predecessors, (17615), 17615 states have call successors, (17615) [2022-11-03 03:50:52,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65473 states to 65473 states and 86619 transitions. [2022-11-03 03:50:52,669 INFO L78 Accepts]: Start accepts. Automaton has 65473 states and 86619 transitions. Word has length 274 [2022-11-03 03:50:52,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:52,669 INFO L495 AbstractCegarLoop]: Abstraction has 65473 states and 86619 transitions. [2022-11-03 03:50:52,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-03 03:50:52,670 INFO L276 IsEmpty]: Start isEmpty. Operand 65473 states and 86619 transitions. [2022-11-03 03:50:52,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-11-03 03:50:52,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:52,674 INFO L195 NwaCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:50:52,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 03:50:52,674 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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)] === [2022-11-03 03:50:52,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:52,675 INFO L85 PathProgramCache]: Analyzing trace with hash -856267916, now seen corresponding path program 1 times [2022-11-03 03:50:52,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:50:52,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023370606] [2022-11-03 03:50:52,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:52,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:50:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1611 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1604 trivial. 0 not checked. [2022-11-03 03:50:53,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:50:53,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023370606] [2022-11-03 03:50:53,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023370606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:53,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:50:53,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:50:53,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210282617] [2022-11-03 03:50:53,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:53,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:50:53,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:50:53,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:50:53,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:50:53,024 INFO L87 Difference]: Start difference. First operand 65473 states and 86619 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-03 03:50:57,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:59,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []