./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-common-saa7146-saa7146_vv.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_171f0af6-5ee5-4401-889b-b002463d526f/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_171f0af6-5ee5-4401-889b-b002463d526f/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_171f0af6-5ee5-4401-889b-b002463d526f/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_171f0af6-5ee5-4401-889b-b002463d526f/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-common-saa7146-saa7146_vv.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_171f0af6-5ee5-4401-889b-b002463d526f/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_171f0af6-5ee5-4401-889b-b002463d526f/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 84c3cd9f2d964ef70410e7a0d1394c510500a590ba49afbae062bd2d798f4c53 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 00:29:40,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:29:40,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:29:40,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:29:40,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:29:40,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:29:40,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:29:40,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:29:40,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:29:40,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:29:40,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:29:40,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:29:40,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:29:40,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:29:40,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:29:40,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:29:40,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:29:40,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:29:40,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:29:40,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:29:40,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:29:40,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:29:40,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:29:40,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:29:40,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:29:40,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:29:40,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:29:40,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:29:40,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:29:40,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:29:40,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:29:40,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:29:40,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:29:40,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:29:40,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:29:40,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:29:40,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:29:40,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:29:40,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:29:40,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:29:40,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:29:40,686 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_171f0af6-5ee5-4401-889b-b002463d526f/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 00:29:40,730 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:29:40,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:29:40,737 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:29:40,738 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:29:40,739 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:29:40,740 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:29:40,740 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:29:40,740 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:29:40,740 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:29:40,741 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:29:40,742 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:29:40,742 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:29:40,743 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:29:40,743 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:29:40,743 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:29:40,743 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:29:40,744 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:29:40,744 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:29:40,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:29:40,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:29:40,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:29:40,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:29:40,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:29:40,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:29:40,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:29:40,747 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:29:40,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:29:40,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:29:40,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:29:40,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:29:40,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:29:40,749 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:29:40,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:29:40,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:29:40,750 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:29:40,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:29:40,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:29:40,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:29:40,751 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_171f0af6-5ee5-4401-889b-b002463d526f/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_171f0af6-5ee5-4401-889b-b002463d526f/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 84c3cd9f2d964ef70410e7a0d1394c510500a590ba49afbae062bd2d798f4c53 [2022-11-22 00:29:41,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:29:41,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:29:41,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:29:41,159 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:29:41,160 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:29:41,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_171f0af6-5ee5-4401-889b-b002463d526f/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-common-saa7146-saa7146_vv.cil.i [2022-11-22 00:29:44,858 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:29:45,737 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:29:45,738 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_171f0af6-5ee5-4401-889b-b002463d526f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-common-saa7146-saa7146_vv.cil.i [2022-11-22 00:29:45,803 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_171f0af6-5ee5-4401-889b-b002463d526f/bin/utaipan-g80aRyZoba/data/f563a3c3d/9ab8936c256e4ad2921560d93fc4bd4e/FLAGc9309fc44 [2022-11-22 00:29:45,826 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_171f0af6-5ee5-4401-889b-b002463d526f/bin/utaipan-g80aRyZoba/data/f563a3c3d/9ab8936c256e4ad2921560d93fc4bd4e [2022-11-22 00:29:45,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:29:45,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:29:45,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:29:45,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:29:45,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:29:45,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:29:45" (1/1) ... [2022-11-22 00:29:45,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@483c57f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:45, skipping insertion in model container [2022-11-22 00:29:45,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:29:45" (1/1) ... [2022-11-22 00:29:45,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:29:46,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:29:50,784 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_171f0af6-5ee5-4401-889b-b002463d526f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-common-saa7146-saa7146_vv.cil.i[497885,497898] [2022-11-22 00:29:50,795 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_171f0af6-5ee5-4401-889b-b002463d526f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-common-saa7146-saa7146_vv.cil.i[498051,498064] [2022-11-22 00:29:50,795 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_171f0af6-5ee5-4401-889b-b002463d526f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-common-saa7146-saa7146_vv.cil.i[498215,498228] [2022-11-22 00:29:50,796 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_171f0af6-5ee5-4401-889b-b002463d526f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-common-saa7146-saa7146_vv.cil.i[498380,498393] [2022-11-22 00:29:50,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:29:50,953 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:29:52,012 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_171f0af6-5ee5-4401-889b-b002463d526f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-common-saa7146-saa7146_vv.cil.i[497885,497898] [2022-11-22 00:29:52,013 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_171f0af6-5ee5-4401-889b-b002463d526f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-common-saa7146-saa7146_vv.cil.i[498051,498064] [2022-11-22 00:29:52,013 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_171f0af6-5ee5-4401-889b-b002463d526f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-common-saa7146-saa7146_vv.cil.i[498215,498228] [2022-11-22 00:29:52,014 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_171f0af6-5ee5-4401-889b-b002463d526f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-common-saa7146-saa7146_vv.cil.i[498380,498393] [2022-11-22 00:29:52,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:29:52,246 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:29:52,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:52 WrapperNode [2022-11-22 00:29:52,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:29:52,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:29:52,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:29:52,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:29:52,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:52" (1/1) ... [2022-11-22 00:29:52,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:52" (1/1) ... [2022-11-22 00:29:53,010 INFO L138 Inliner]: procedures = 447, calls = 6502, calls flagged for inlining = 237, calls inlined = 218, statements flattened = 11777 [2022-11-22 00:29:53,011 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:29:53,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:29:53,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:29:53,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:29:53,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:52" (1/1) ... [2022-11-22 00:29:53,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:52" (1/1) ... [2022-11-22 00:29:53,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:52" (1/1) ... [2022-11-22 00:29:53,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:52" (1/1) ... [2022-11-22 00:29:53,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:52" (1/1) ... [2022-11-22 00:29:53,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:52" (1/1) ... [2022-11-22 00:29:54,018 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:52" (1/1) ... [2022-11-22 00:29:54,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:52" (1/1) ... [2022-11-22 00:29:54,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:29:54,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:29:54,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:29:54,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:29:54,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:52" (1/1) ... [2022-11-22 00:29:54,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:29:54,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_171f0af6-5ee5-4401-889b-b002463d526f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:29:54,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_171f0af6-5ee5-4401-889b-b002463d526f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:29:54,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_171f0af6-5ee5-4401-889b-b002463d526f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:29:54,217 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_streamoff [2022-11-22 00:29:54,218 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_streamoff [2022-11-22 00:29:54,218 INFO L130 BoogieDeclarations]: Found specification of procedure video_open [2022-11-22 00:29:54,218 INFO L138 BoogieDeclarations]: Found implementation of procedure video_open [2022-11-22 00:29:54,218 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_reqbufs [2022-11-22 00:29:54,219 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_reqbufs [2022-11-22 00:29:54,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 00:29:54,219 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 00:29:54,219 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_fmt_vid_cap [2022-11-22 00:29:54,219 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_fmt_vid_cap [2022-11-22 00:29:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 00:29:54,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 00:29:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_enum_fmt_vid_cap [2022-11-22 00:29:54,220 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_enum_fmt_vid_cap [2022-11-22 00:29:54,221 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_reqbufs [2022-11-22 00:29:54,221 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_reqbufs [2022-11-22 00:29:54,222 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_set_window [2022-11-22 00:29:54,222 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_set_window [2022-11-22 00:29:54,222 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-22 00:29:54,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-22 00:29:54,224 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_res_get [2022-11-22 00:29:54,224 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_res_get [2022-11-22 00:29:54,225 INFO L130 BoogieDeclarations]: Found specification of procedure video_end [2022-11-22 00:29:54,225 INFO L138 BoogieDeclarations]: Found implementation of procedure video_end [2022-11-22 00:29:54,225 INFO L130 BoogieDeclarations]: Found specification of procedure arch_spin_is_locked [2022-11-22 00:29:54,226 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_spin_is_locked [2022-11-22 00:29:54,226 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_to_dma [2022-11-22 00:29:54,226 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_to_dma [2022-11-22 00:29:54,227 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_fmt_vid_cap [2022-11-22 00:29:54,227 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_fmt_vid_cap [2022-11-22 00:29:54,228 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-22 00:29:54,228 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-22 00:29:54,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_saa7146_vv_cleanup_module_9_2 [2022-11-22 00:29:54,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_saa7146_vv_cleanup_module_9_2 [2022-11-22 00:29:54,229 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_buffer_queue [2022-11-22 00:29:54,229 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_buffer_queue [2022-11-22 00:29:54,229 INFO L130 BoogieDeclarations]: Found specification of procedure video_close [2022-11-22 00:29:54,229 INFO L138 BoogieDeclarations]: Found implementation of procedure video_close [2022-11-22 00:29:54,230 INFO L130 BoogieDeclarations]: Found specification of procedure vbi_open [2022-11-22 00:29:54,230 INFO L138 BoogieDeclarations]: Found implementation of procedure vbi_open [2022-11-22 00:29:54,230 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_std [2022-11-22 00:29:54,230 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_std [2022-11-22 00:29:54,230 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_pgtable_alloc [2022-11-22 00:29:54,232 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_pgtable_alloc [2022-11-22 00:29:54,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 00:29:54,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 00:29:54,233 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2022-11-22 00:29:54,233 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2022-11-22 00:29:54,233 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 00:29:54,233 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 00:29:54,234 INFO L130 BoogieDeclarations]: Found specification of procedure vbi_irq_done [2022-11-22 00:29:54,234 INFO L138 BoogieDeclarations]: Found implementation of procedure vbi_irq_done [2022-11-22 00:29:54,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer [2022-11-22 00:29:54,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer [2022-11-22 00:29:54,235 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2022-11-22 00:29:54,235 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2022-11-22 00:29:54,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 00:29:54,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 00:29:54,236 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querybuf [2022-11-22 00:29:54,236 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querybuf [2022-11-22 00:29:54,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-22 00:29:54,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-22 00:29:54,237 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-22 00:29:54,237 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-22 00:29:54,237 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2022-11-22 00:29:54,238 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2022-11-22 00:29:54,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:29:54,238 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_fmt_vid_overlay [2022-11-22 00:29:54,239 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_fmt_vid_overlay [2022-11-22 00:29:54,239 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_dqbuf [2022-11-22 00:29:54,240 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_dqbuf [2022-11-22 00:29:54,240 INFO L130 BoogieDeclarations]: Found specification of procedure video_irq_done [2022-11-22 00:29:54,240 INFO L138 BoogieDeclarations]: Found implementation of procedure video_irq_done [2022-11-22 00:29:54,240 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-22 00:29:54,240 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-22 00:29:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-22 00:29:54,242 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-22 00:29:54,242 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_fmt_vid_overlay [2022-11-22 00:29:54,242 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_fmt_vid_overlay [2022-11-22 00:29:54,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_video_device [2022-11-22 00:29:54,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_video_device [2022-11-22 00:29:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_try_fmt_vid_cap [2022-11-22 00:29:54,243 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_try_fmt_vid_cap [2022-11-22 00:29:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-22 00:29:54,243 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-22 00:29:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 00:29:54,245 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 00:29:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure sort_and_eliminate [2022-11-22 00:29:54,245 INFO L138 BoogieDeclarations]: Found implementation of procedure sort_and_eliminate [2022-11-22 00:29:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2022-11-22 00:29:54,246 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2022-11-22 00:29:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 00:29:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_qbuf [2022-11-22 00:29:54,247 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_qbuf [2022-11-22 00:29:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 00:29:54,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 00:29:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:29:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure fops_read [2022-11-22 00:29:54,248 INFO L138 BoogieDeclarations]: Found implementation of procedure fops_read [2022-11-22 00:29:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 00:29:54,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 00:29:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure release_all_pagetables [2022-11-22 00:29:54,249 INFO L138 BoogieDeclarations]: Found implementation of procedure release_all_pagetables [2022-11-22 00:29:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_buffer_finish [2022-11-22 00:29:54,250 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_buffer_finish [2022-11-22 00:29:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_set_output_format [2022-11-22 00:29:54,255 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_set_output_format [2022-11-22 00:29:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure video_read [2022-11-22 00:29:54,256 INFO L138 BoogieDeclarations]: Found implementation of procedure video_read [2022-11-22 00:29:54,257 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-22 00:29:54,257 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-22 00:29:54,258 INFO L130 BoogieDeclarations]: Found specification of procedure vbi_stop [2022-11-22 00:29:54,258 INFO L138 BoogieDeclarations]: Found implementation of procedure vbi_stop [2022-11-22 00:29:54,258 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_res_free [2022-11-22 00:29:54,263 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_res_free [2022-11-22 00:29:54,264 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_subscribe_event [2022-11-22 00:29:54,264 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_subscribe_event [2022-11-22 00:29:54,264 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_fbuf [2022-11-22 00:29:54,265 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_fbuf [2022-11-22 00:29:54,265 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_pgtable_free [2022-11-22 00:29:54,265 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_pgtable_free [2022-11-22 00:29:54,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 00:29:54,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 00:29:54,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 00:29:54,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2022-11-22 00:29:54,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2022-11-22 00:29:54,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-22 00:29:54,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-22 00:29:54,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-22 00:29:54,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-22 00:29:54,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-22 00:29:54,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-22 00:29:54,267 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_queue_sg_init [2022-11-22 00:29:54,268 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_queue_sg_init [2022-11-22 00:29:54,268 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_pgtable_build_single [2022-11-22 00:29:54,268 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_pgtable_build_single [2022-11-22 00:29:54,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:29:54,268 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_s_ctrl [2022-11-22 00:29:54,269 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_s_ctrl [2022-11-22 00:29:54,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 00:29:54,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 00:29:54,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 00:29:54,269 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-22 00:29:54,270 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 00:29:54,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 00:29:54,270 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_queue [2022-11-22 00:29:54,270 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_queue [2022-11-22 00:29:54,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_or_killable_lock_of_video_device [2022-11-22 00:29:54,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_or_killable_lock_of_video_device [2022-11-22 00:29:54,272 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_qbuf [2022-11-22 00:29:54,272 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_qbuf [2022-11-22 00:29:54,272 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-22 00:29:54,272 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-22 00:29:54,272 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_streamon [2022-11-22 00:29:54,273 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_streamon [2022-11-22 00:29:54,273 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_iolock [2022-11-22 00:29:54,273 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_iolock [2022-11-22 00:29:54,273 INFO L130 BoogieDeclarations]: Found specification of procedure video_init [2022-11-22 00:29:54,274 INFO L138 BoogieDeclarations]: Found implementation of procedure video_init [2022-11-22 00:29:54,274 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_try_fmt_vid_overlay [2022-11-22 00:29:54,274 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_try_fmt_vid_overlay [2022-11-22 00:29:54,274 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_fmt_vbi_cap [2022-11-22 00:29:54,275 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_fmt_vbi_cap [2022-11-22 00:29:54,275 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-22 00:29:54,275 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-22 00:29:54,275 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-22 00:29:54,275 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-22 00:29:54,276 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_unsubscribe [2022-11-22 00:29:54,276 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_event_unsubscribe [2022-11-22 00:29:54,276 INFO L130 BoogieDeclarations]: Found specification of procedure fops_mmap [2022-11-22 00:29:54,276 INFO L138 BoogieDeclarations]: Found implementation of procedure fops_mmap [2022-11-22 00:29:54,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:29:54,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:29:54,277 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_disable_clipping [2022-11-22 00:29:54,277 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_disable_clipping [2022-11-22 00:29:54,277 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_parm [2022-11-22 00:29:54,277 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_parm [2022-11-22 00:29:54,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 00:29:54,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 00:29:54,279 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_stop_preview [2022-11-22 00:29:54,280 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_stop_preview [2022-11-22 00:29:54,280 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-22 00:29:54,280 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-22 00:29:54,280 INFO L130 BoogieDeclarations]: Found specification of procedure SAA7146_IER_ENABLE [2022-11-22 00:29:54,280 INFO L138 BoogieDeclarations]: Found implementation of procedure SAA7146_IER_ENABLE [2022-11-22 00:29:54,281 INFO L130 BoogieDeclarations]: Found specification of procedure video_begin [2022-11-22 00:29:54,281 INFO L138 BoogieDeclarations]: Found implementation of procedure video_begin [2022-11-22 00:29:54,281 INFO L130 BoogieDeclarations]: Found specification of procedure SAA7146_IER_DISABLE [2022-11-22 00:29:54,281 INFO L138 BoogieDeclarations]: Found implementation of procedure SAA7146_IER_DISABLE [2022-11-22 00:29:54,281 INFO L130 BoogieDeclarations]: Found specification of procedure fops_open [2022-11-22 00:29:54,282 INFO L138 BoogieDeclarations]: Found implementation of procedure fops_open [2022-11-22 00:29:54,282 INFO L130 BoogieDeclarations]: Found specification of procedure vbi_init [2022-11-22 00:29:54,282 INFO L138 BoogieDeclarations]: Found implementation of procedure vbi_init [2022-11-22 00:29:54,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 00:29:54,282 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 00:29:54,283 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_fbuf [2022-11-22 00:29:54,283 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_fbuf [2022-11-22 00:29:54,283 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-22 00:29:54,283 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-22 00:29:54,283 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-22 00:29:54,284 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-22 00:29:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:29:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-22 00:29:54,284 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-22 00:29:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 00:29:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_release [2022-11-22 00:29:54,285 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_release [2022-11-22 00:29:54,285 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-22 00:29:54,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-22 00:29:54,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 00:29:54,285 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_node_name [2022-11-22 00:29:54,286 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_node_name [2022-11-22 00:29:54,286 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-22 00:29:54,286 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-22 00:29:54,286 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-22 00:29:54,286 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-22 00:29:54,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 00:29:54,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 00:29:54,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-22 00:29:54,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-22 00:29:54,287 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_dqbuf [2022-11-22 00:29:54,287 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_dqbuf [2022-11-22 00:29:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-22 00:29:54,288 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-22 00:29:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querycap [2022-11-22 00:29:54,288 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querycap [2022-11-22 00:29:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-22 00:29:54,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-22 00:29:54,289 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_start_preview [2022-11-22 00:29:54,289 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_start_preview [2022-11-22 00:29:54,289 INFO L130 BoogieDeclarations]: Found specification of procedure fops_release [2022-11-22 00:29:54,291 INFO L138 BoogieDeclarations]: Found implementation of procedure fops_release [2022-11-22 00:29:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_querybuf [2022-11-22 00:29:54,295 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_querybuf [2022-11-22 00:29:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 00:29:54,295 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 00:29:54,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-22 00:29:54,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-22 00:29:54,296 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_write_out_dma [2022-11-22 00:29:54,296 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_write_out_dma [2022-11-22 00:29:54,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:29:54,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 00:29:54,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 00:29:54,299 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_format_by_fourcc [2022-11-22 00:29:54,299 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_format_by_fourcc [2022-11-22 00:29:54,299 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_dma_free [2022-11-22 00:29:54,300 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_dma_free [2022-11-22 00:29:54,300 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_buffer_next [2022-11-22 00:29:54,300 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_buffer_next [2022-11-22 00:29:54,300 INFO L130 BoogieDeclarations]: Found specification of procedure program_capture_engine [2022-11-22 00:29:54,300 INFO L138 BoogieDeclarations]: Found implementation of procedure program_capture_engine [2022-11-22 00:29:54,300 INFO L130 BoogieDeclarations]: Found specification of procedure vbi_close [2022-11-22 00:29:54,301 INFO L138 BoogieDeclarations]: Found implementation of procedure vbi_close [2022-11-22 00:29:54,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_video_device [2022-11-22 00:29:54,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_video_device [2022-11-22 00:29:54,301 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-22 00:29:54,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-22 00:29:54,301 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_setup [2022-11-22 00:29:54,302 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_setup [2022-11-22 00:29:54,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 00:29:54,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 00:29:54,302 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-22 00:29:54,302 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-22 00:29:54,303 INFO L130 BoogieDeclarations]: Found specification of procedure fops_write [2022-11-22 00:29:54,303 INFO L138 BoogieDeclarations]: Found implementation of procedure fops_write [2022-11-22 00:29:54,303 INFO L130 BoogieDeclarations]: Found specification of procedure vbi_read [2022-11-22 00:29:54,303 INFO L138 BoogieDeclarations]: Found implementation of procedure vbi_read [2022-11-22 00:29:54,303 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-22 00:29:54,304 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-22 00:29:54,304 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-22 00:29:54,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-22 00:29:54,304 INFO L130 BoogieDeclarations]: Found specification of procedure fops_poll [2022-11-22 00:29:54,304 INFO L138 BoogieDeclarations]: Found implementation of procedure fops_poll [2022-11-22 00:29:54,304 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-22 00:29:54,305 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-22 00:29:54,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:29:54,305 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-22 00:29:54,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-22 00:29:54,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 00:29:54,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 00:29:55,857 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:29:55,864 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:29:56,177 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 00:31:10,032 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 00:31:10,214 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:31:13,479 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:31:13,480 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-22 00:31:13,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:31:13 BoogieIcfgContainer [2022-11-22 00:31:13,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:31:13,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:31:13,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:31:13,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:31:13,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:29:45" (1/3) ... [2022-11-22 00:31:13,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e071c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:31:13, skipping insertion in model container [2022-11-22 00:31:13,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:29:52" (2/3) ... [2022-11-22 00:31:13,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e071c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:31:13, skipping insertion in model container [2022-11-22 00:31:13,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:31:13" (3/3) ... [2022-11-22 00:31:13,502 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-common-saa7146-saa7146_vv.cil.i [2022-11-22 00:31:13,524 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:31:13,525 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 00:31:13,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:31:13,656 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;@4622707c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:31:13,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 00:31:13,670 INFO L276 IsEmpty]: Start isEmpty. Operand has 2490 states, 1583 states have (on average 1.3310170562223627) internal successors, (2107), 1600 states have internal predecessors, (2107), 772 states have call successors, (772), 133 states have call predecessors, (772), 132 states have return successors, (763), 756 states have call predecessors, (763), 763 states have call successors, (763) [2022-11-22 00:31:13,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-11-22 00:31:13,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:13,703 INFO L195 NwaCegarLoop]: trace histogram [44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:13,704 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:31:13,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:13,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1554275335, now seen corresponding path program 1 times [2022-11-22 00:31:13,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:13,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39212290] [2022-11-22 00:31:13,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:13,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:15,337 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7310 trivial. 0 not checked. [2022-11-22 00:31:15,339 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:15,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39212290] [2022-11-22 00:31:15,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39212290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:15,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:15,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:31:15,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798306891] [2022-11-22 00:31:15,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:15,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:31:15,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:15,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:31:15,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:31:15,408 INFO L87 Difference]: Start difference. First operand has 2490 states, 1583 states have (on average 1.3310170562223627) internal successors, (2107), 1600 states have internal predecessors, (2107), 772 states have call successors, (772), 133 states have call predecessors, (772), 132 states have return successors, (763), 756 states have call predecessors, (763), 763 states have call successors, (763) Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-22 00:31:23,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:27,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:30,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:31:33,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:35,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:31:36,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:38,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:40,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:42,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:31:44,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:31:46,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:48,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:31:50,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:31:50,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:50,669 INFO L93 Difference]: Finished difference Result 7120 states and 10548 transitions. [2022-11-22 00:31:50,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:31:50,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 445 [2022-11-22 00:31:50,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:50,719 INFO L225 Difference]: With dead ends: 7120 [2022-11-22 00:31:50,720 INFO L226 Difference]: Without dead ends: 4704 [2022-11-22 00:31:50,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:31:50,739 INFO L413 NwaCegarLoop]: 3766 mSDtfsCounter, 3254 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 15 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3264 SdHoareTripleChecker+Valid, 6833 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:50,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3264 Valid, 6833 Invalid, 1112 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 1087 Invalid, 10 Unknown, 0 Unchecked, 34.8s Time] [2022-11-22 00:31:50,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4704 states. [2022-11-22 00:31:51,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4704 to 4695. [2022-11-22 00:31:51,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4695 states, 3013 states have (on average 1.3275804845668768) internal successors, (4000), 3047 states have internal predecessors, (4000), 1421 states have call successors, (1421), 259 states have call predecessors, (1421), 258 states have return successors, (1427), 1402 states have call predecessors, (1427), 1417 states have call successors, (1427) [2022-11-22 00:31:51,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4695 states to 4695 states and 6848 transitions. [2022-11-22 00:31:51,157 INFO L78 Accepts]: Start accepts. Automaton has 4695 states and 6848 transitions. Word has length 445 [2022-11-22 00:31:51,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:51,162 INFO L495 AbstractCegarLoop]: Abstraction has 4695 states and 6848 transitions. [2022-11-22 00:31:51,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-22 00:31:51,163 INFO L276 IsEmpty]: Start isEmpty. Operand 4695 states and 6848 transitions. [2022-11-22 00:31:51,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2022-11-22 00:31:51,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:51,188 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:51,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:31:51,188 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:31:51,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:51,189 INFO L85 PathProgramCache]: Analyzing trace with hash -2144436371, now seen corresponding path program 1 times [2022-11-22 00:31:51,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:51,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283004962] [2022-11-22 00:31:51,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:51,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2022-11-22 00:31:52,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:52,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283004962] [2022-11-22 00:31:52,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283004962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:52,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:52,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:31:52,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846612782] [2022-11-22 00:31:52,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:52,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:31:52,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:52,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:31:52,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:31:52,018 INFO L87 Difference]: Start difference. First operand 4695 states and 6848 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-22 00:31:53,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:55,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:56,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:01,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:03,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:08,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:32:10,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:32:13,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:15,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:32:17,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:19,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:20,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:32:22,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:32:24,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:26,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:32:28,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:32:28,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:28,748 INFO L93 Difference]: Finished difference Result 11457 states and 16695 transitions. [2022-11-22 00:32:28,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:32:28,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 478 [2022-11-22 00:32:28,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:28,800 INFO L225 Difference]: With dead ends: 11457 [2022-11-22 00:32:28,801 INFO L226 Difference]: Without dead ends: 6849 [2022-11-22 00:32:28,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:32:28,826 INFO L413 NwaCegarLoop]: 3736 mSDtfsCounter, 3226 mSDsluCounter, 3037 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 13 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3237 SdHoareTripleChecker+Valid, 6773 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:28,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3237 Valid, 6773 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1090 Invalid, 9 Unknown, 0 Unchecked, 36.3s Time] [2022-11-22 00:32:28,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6849 states. [2022-11-22 00:32:29,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6849 to 6798. [2022-11-22 00:32:29,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6798 states, 4395 states have (on average 1.3283276450511945) internal successors, (5838), 4444 states have internal predecessors, (5838), 2014 states have call successors, (2014), 387 states have call predecessors, (2014), 386 states have return successors, (2040), 1985 states have call predecessors, (2040), 2010 states have call successors, (2040) [2022-11-22 00:32:29,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6798 states to 6798 states and 9892 transitions. [2022-11-22 00:32:29,291 INFO L78 Accepts]: Start accepts. Automaton has 6798 states and 9892 transitions. Word has length 478 [2022-11-22 00:32:29,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:29,293 INFO L495 AbstractCegarLoop]: Abstraction has 6798 states and 9892 transitions. [2022-11-22 00:32:29,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-22 00:32:29,294 INFO L276 IsEmpty]: Start isEmpty. Operand 6798 states and 9892 transitions. [2022-11-22 00:32:29,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-11-22 00:32:29,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:29,310 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:29,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:32:29,310 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:32:29,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:29,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1256166670, now seen corresponding path program 1 times [2022-11-22 00:32:29,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:29,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424710747] [2022-11-22 00:32:29,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:29,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:30,137 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2022-11-22 00:32:30,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:30,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424710747] [2022-11-22 00:32:30,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424710747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:30,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:30,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:32:30,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122207997] [2022-11-22 00:32:30,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:30,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:32:30,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:30,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:32:30,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:32:30,146 INFO L87 Difference]: Start difference. First operand 6798 states and 9892 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-22 00:32:35,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:32:43,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:46,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:32:48,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:49,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:32:51,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:53,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:55,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:57,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:32:59,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:33:01,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:03,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:33:05,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:33:05,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:05,802 INFO L93 Difference]: Finished difference Result 17831 states and 25948 transitions. [2022-11-22 00:33:05,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:33:05,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 477 [2022-11-22 00:33:05,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:05,873 INFO L225 Difference]: With dead ends: 17831 [2022-11-22 00:33:05,873 INFO L226 Difference]: Without dead ends: 11120 [2022-11-22 00:33:05,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:33:05,908 INFO L413 NwaCegarLoop]: 3743 mSDtfsCounter, 3239 mSDsluCounter, 3054 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 13 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3252 SdHoareTripleChecker+Valid, 6797 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:05,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3252 Valid, 6797 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1068 Invalid, 10 Unknown, 0 Unchecked, 35.1s Time] [2022-11-22 00:33:05,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11120 states. [2022-11-22 00:33:06,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11120 to 11084. [2022-11-22 00:33:06,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11084 states, 7187 states have (on average 1.3289272297203283) internal successors, (9551), 7272 states have internal predecessors, (9551), 3253 states have call successors, (3253), 642 states have call predecessors, (3253), 641 states have return successors, (3313), 3201 states have call predecessors, (3313), 3249 states have call successors, (3313) [2022-11-22 00:33:06,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11084 states to 11084 states and 16117 transitions. [2022-11-22 00:33:06,610 INFO L78 Accepts]: Start accepts. Automaton has 11084 states and 16117 transitions. Word has length 477 [2022-11-22 00:33:06,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:06,612 INFO L495 AbstractCegarLoop]: Abstraction has 11084 states and 16117 transitions. [2022-11-22 00:33:06,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-22 00:33:06,613 INFO L276 IsEmpty]: Start isEmpty. Operand 11084 states and 16117 transitions. [2022-11-22 00:33:06,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-11-22 00:33:06,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:06,631 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:06,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:33:06,632 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:33:06,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:06,633 INFO L85 PathProgramCache]: Analyzing trace with hash -11450535, now seen corresponding path program 1 times [2022-11-22 00:33:06,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:06,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434431248] [2022-11-22 00:33:06,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:06,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:07,252 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2022-11-22 00:33:07,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:07,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434431248] [2022-11-22 00:33:07,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434431248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:07,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:07,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:33:07,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056936955] [2022-11-22 00:33:07,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:07,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:33:07,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:07,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:33:07,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:33:07,256 INFO L87 Difference]: Start difference. First operand 11084 states and 16117 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-22 00:33:10,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:13,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:33:20,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:33:21,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:25,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:33:27,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:29,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:31,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:33:33,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:35,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:37,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:33:39,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:33:41,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:43,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:33:45,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:33:45,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:45,580 INFO L93 Difference]: Finished difference Result 29634 states and 43050 transitions. [2022-11-22 00:33:45,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:33:45,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 479 [2022-11-22 00:33:45,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:45,698 INFO L225 Difference]: With dead ends: 29634 [2022-11-22 00:33:45,698 INFO L226 Difference]: Without dead ends: 18637 [2022-11-22 00:33:45,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:33:45,756 INFO L413 NwaCegarLoop]: 4147 mSDtfsCounter, 3137 mSDsluCounter, 3038 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 13 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3149 SdHoareTripleChecker+Valid, 7185 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:45,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3149 Valid, 7185 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1176 Invalid, 11 Unknown, 0 Unchecked, 37.7s Time] [2022-11-22 00:33:45,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18637 states. [2022-11-22 00:33:47,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18637 to 18598. [2022-11-22 00:33:47,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18598 states, 12120 states have (on average 1.3304455445544554) internal successors, (16125), 12274 states have internal predecessors, (16125), 5370 states have call successors, (5370), 1106 states have call predecessors, (5370), 1105 states have return successors, (5476), 5270 states have call predecessors, (5476), 5366 states have call successors, (5476) [2022-11-22 00:33:47,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18598 states to 18598 states and 26971 transitions. [2022-11-22 00:33:47,263 INFO L78 Accepts]: Start accepts. Automaton has 18598 states and 26971 transitions. Word has length 479 [2022-11-22 00:33:47,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:47,264 INFO L495 AbstractCegarLoop]: Abstraction has 18598 states and 26971 transitions. [2022-11-22 00:33:47,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-22 00:33:47,265 INFO L276 IsEmpty]: Start isEmpty. Operand 18598 states and 26971 transitions. [2022-11-22 00:33:47,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-11-22 00:33:47,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:47,272 INFO L195 NwaCegarLoop]: trace histogram [46, 43, 43, 43, 43, 43, 43, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:47,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:33:47,272 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:33:47,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:47,273 INFO L85 PathProgramCache]: Analyzing trace with hash 19945434, now seen corresponding path program 1 times [2022-11-22 00:33:47,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:47,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674883237] [2022-11-22 00:33:47,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:47,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:49,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7492 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7492 trivial. 0 not checked. [2022-11-22 00:33:49,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:49,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674883237] [2022-11-22 00:33:49,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674883237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:49,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:49,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:33:49,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356794959] [2022-11-22 00:33:49,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:49,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:33:49,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:49,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:33:49,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:33:49,628 INFO L87 Difference]: Start difference. First operand 18598 states and 26971 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-22 00:33:52,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:56,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:57,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:00,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:08,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:10,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:15,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:34:17,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:34:20,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:34:24,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:26,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:28,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:34:30,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:32,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:34:34,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:34:35,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:34:37,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:34:39,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:41,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:34:43,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:34:45,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:34:45,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:45,837 INFO L93 Difference]: Finished difference Result 36959 states and 53600 transitions. [2022-11-22 00:34:45,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:34:45,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 479 [2022-11-22 00:34:45,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:46,049 INFO L225 Difference]: With dead ends: 36959 [2022-11-22 00:34:46,049 INFO L226 Difference]: Without dead ends: 36957 [2022-11-22 00:34:46,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:34:46,077 INFO L413 NwaCegarLoop]: 3771 mSDtfsCounter, 3360 mSDsluCounter, 10484 mSDsCounter, 0 mSdLazyCounter, 2092 mSolverCounterSat, 2 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3376 SdHoareTripleChecker+Valid, 14255 SdHoareTripleChecker+Invalid, 2108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2092 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:46,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3376 Valid, 14255 Invalid, 2108 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2092 Invalid, 14 Unknown, 0 Unchecked, 55.0s Time] [2022-11-22 00:34:46,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36957 states. [2022-11-22 00:34:48,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36957 to 36944. [2022-11-22 00:34:48,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36944 states, 24091 states have (on average 1.3311195052094142) internal successors, (32068), 24398 states have internal predecessors, (32068), 10641 states have call successors, (10641), 2211 states have call predecessors, (10641), 2209 states have return successors, (10879), 10440 states have call predecessors, (10879), 10633 states have call successors, (10879) [2022-11-22 00:34:48,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36944 states to 36944 states and 53588 transitions. [2022-11-22 00:34:48,554 INFO L78 Accepts]: Start accepts. Automaton has 36944 states and 53588 transitions. Word has length 479 [2022-11-22 00:34:48,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:48,555 INFO L495 AbstractCegarLoop]: Abstraction has 36944 states and 53588 transitions. [2022-11-22 00:34:48,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-22 00:34:48,556 INFO L276 IsEmpty]: Start isEmpty. Operand 36944 states and 53588 transitions. [2022-11-22 00:34:48,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-11-22 00:34:48,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:48,564 INFO L195 NwaCegarLoop]: trace histogram [46, 43, 43, 43, 43, 43, 43, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:48,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:34:48,564 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:34:48,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:48,565 INFO L85 PathProgramCache]: Analyzing trace with hash -814795754, now seen corresponding path program 1 times [2022-11-22 00:34:48,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:48,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350422739] [2022-11-22 00:34:48,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:48,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:50,978 INFO L134 CoverageAnalysis]: Checked inductivity of 7494 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7492 trivial. 0 not checked. [2022-11-22 00:34:50,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:50,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350422739] [2022-11-22 00:34:50,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350422739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:50,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:34:50,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:34:50,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177346517] [2022-11-22 00:34:50,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:50,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:34:50,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:50,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:34:50,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:34:50,981 INFO L87 Difference]: Start difference. First operand 36944 states and 53588 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-22 00:34:53,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:55,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:59,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:01,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:05,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:35:12,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:35:15,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:17,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:19,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:35:21,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:23,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:35:25,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:35:27,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:29,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:35:29,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:29,901 INFO L93 Difference]: Finished difference Result 37193 states and 53886 transitions. [2022-11-22 00:35:29,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:35:29,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 484 [2022-11-22 00:35:29,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:30,089 INFO L225 Difference]: With dead ends: 37193 [2022-11-22 00:35:30,089 INFO L226 Difference]: Without dead ends: 37191 [2022-11-22 00:35:30,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:35:30,118 INFO L413 NwaCegarLoop]: 3102 mSDtfsCounter, 3342 mSDsluCounter, 6386 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3356 SdHoareTripleChecker+Valid, 9488 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:30,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3356 Valid, 9488 Invalid, 1613 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1602 Invalid, 10 Unknown, 0 Unchecked, 37.9s Time] [2022-11-22 00:35:30,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37191 states. [2022-11-22 00:35:32,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37191 to 37182. [2022-11-22 00:35:32,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37182 states, 24225 states have (on average 1.3297420020639834) internal successors, (32213), 24539 states have internal predecessors, (32213), 10697 states have call successors, (10697), 2252 states have call predecessors, (10697), 2257 states have return successors, (10961), 10496 states have call predecessors, (10961), 10689 states have call successors, (10961) [2022-11-22 00:35:32,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37182 states to 37182 states and 53871 transitions. [2022-11-22 00:35:32,795 INFO L78 Accepts]: Start accepts. Automaton has 37182 states and 53871 transitions. Word has length 484 [2022-11-22 00:35:32,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:32,797 INFO L495 AbstractCegarLoop]: Abstraction has 37182 states and 53871 transitions. [2022-11-22 00:35:32,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-22 00:35:32,797 INFO L276 IsEmpty]: Start isEmpty. Operand 37182 states and 53871 transitions. [2022-11-22 00:35:32,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2022-11-22 00:35:32,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:32,806 INFO L195 NwaCegarLoop]: trace histogram [46, 43, 43, 43, 43, 43, 43, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:35:32,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:35:32,806 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:35:32,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:32,807 INFO L85 PathProgramCache]: Analyzing trace with hash 205672620, now seen corresponding path program 1 times [2022-11-22 00:35:32,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:32,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265546374] [2022-11-22 00:35:32,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:32,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:34,836 INFO L134 CoverageAnalysis]: Checked inductivity of 7501 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7497 trivial. 0 not checked. [2022-11-22 00:35:34,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:34,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265546374] [2022-11-22 00:35:34,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265546374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:35:34,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:35:34,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:35:34,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258097548] [2022-11-22 00:35:34,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:35:34,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:35:34,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:34,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:35:34,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:35:34,839 INFO L87 Difference]: Start difference. First operand 37182 states and 53871 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2022-11-22 00:35:38,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:41,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:42,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:44,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:45,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:48,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:35:56,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:35:58,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:01,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:03,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:36:05,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:07,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:36:09,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:36:11,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:13,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:36:13,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:36:13,576 INFO L93 Difference]: Finished difference Result 37192 states and 53880 transitions. [2022-11-22 00:36:13,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:36:13,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 490 [2022-11-22 00:36:13,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:36:13,761 INFO L225 Difference]: With dead ends: 37192 [2022-11-22 00:36:13,762 INFO L226 Difference]: Without dead ends: 37190 [2022-11-22 00:36:13,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:36:13,785 INFO L413 NwaCegarLoop]: 3102 mSDtfsCounter, 3342 mSDsluCounter, 6386 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3355 SdHoareTripleChecker+Valid, 9488 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:36:13,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3355 Valid, 9488 Invalid, 1613 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1602 Invalid, 10 Unknown, 0 Unchecked, 37.5s Time] [2022-11-22 00:36:13,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37190 states. [2022-11-22 00:36:15,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37190 to 37190. [2022-11-22 00:36:15,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37190 states, 24231 states have (on average 1.329660352441088) internal successors, (32219), 24545 states have internal predecessors, (32219), 10697 states have call successors, (10697), 2254 states have call predecessors, (10697), 2259 states have return successors, (10961), 10496 states have call predecessors, (10961), 10689 states have call successors, (10961) [2022-11-22 00:36:16,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37190 states to 37190 states and 53877 transitions. [2022-11-22 00:36:16,176 INFO L78 Accepts]: Start accepts. Automaton has 37190 states and 53877 transitions. Word has length 490 [2022-11-22 00:36:16,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:36:16,177 INFO L495 AbstractCegarLoop]: Abstraction has 37190 states and 53877 transitions. [2022-11-22 00:36:16,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2022-11-22 00:36:16,178 INFO L276 IsEmpty]: Start isEmpty. Operand 37190 states and 53877 transitions. [2022-11-22 00:36:16,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2022-11-22 00:36:16,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:36:16,188 INFO L195 NwaCegarLoop]: trace histogram [46, 43, 43, 43, 43, 43, 43, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:36:16,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:36:16,188 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:36:16,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:36:16,189 INFO L85 PathProgramCache]: Analyzing trace with hash 566775382, now seen corresponding path program 1 times [2022-11-22 00:36:16,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:36:16,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93875034] [2022-11-22 00:36:16,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:16,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:36:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:18,148 INFO L134 CoverageAnalysis]: Checked inductivity of 7510 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7504 trivial. 0 not checked. [2022-11-22 00:36:18,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:18,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93875034] [2022-11-22 00:36:18,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93875034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:36:18,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:36:18,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:36:18,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857923744] [2022-11-22 00:36:18,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:36:18,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:36:18,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:36:18,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:36:18,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:36:18,150 INFO L87 Difference]: Start difference. First operand 37190 states and 53877 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-22 00:36:22,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:25,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:27,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:31,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:36:40,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:43,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:45,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:36:48,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:51,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:53,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:36:55,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:57,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:36:59,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:37:01,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:03,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:37:04,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:37:04,227 INFO L93 Difference]: Finished difference Result 71870 states and 104525 transitions. [2022-11-22 00:37:04,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:37:04,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 494 [2022-11-22 00:37:04,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:37:04,531 INFO L225 Difference]: With dead ends: 71870 [2022-11-22 00:37:04,531 INFO L226 Difference]: Without dead ends: 71868 [2022-11-22 00:37:04,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:37:04,568 INFO L413 NwaCegarLoop]: 3923 mSDtfsCounter, 3199 mSDsluCounter, 10781 mSDsCounter, 0 mSdLazyCounter, 2202 mSolverCounterSat, 3 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3213 SdHoareTripleChecker+Valid, 14704 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2202 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:37:04,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3213 Valid, 14704 Invalid, 2215 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2202 Invalid, 10 Unknown, 0 Unchecked, 43.7s Time] [2022-11-22 00:37:04,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71868 states. [2022-11-22 00:37:08,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71868 to 71494. [2022-11-22 00:37:08,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71494 states, 46509 states have (on average 1.3310757057773763) internal successors, (61907), 47227 states have internal predecessors, (61907), 20666 states have call successors, (20666), 4379 states have call predecessors, (20666), 4316 states have return successors, (21484), 20099 states have call predecessors, (21484), 20650 states have call successors, (21484) [2022-11-22 00:37:09,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71494 states to 71494 states and 104057 transitions. [2022-11-22 00:37:09,326 INFO L78 Accepts]: Start accepts. Automaton has 71494 states and 104057 transitions. Word has length 494 [2022-11-22 00:37:09,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:37:09,327 INFO L495 AbstractCegarLoop]: Abstraction has 71494 states and 104057 transitions. [2022-11-22 00:37:09,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-22 00:37:09,327 INFO L276 IsEmpty]: Start isEmpty. Operand 71494 states and 104057 transitions. [2022-11-22 00:37:09,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2022-11-22 00:37:09,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:37:09,339 INFO L195 NwaCegarLoop]: trace histogram [46, 43, 43, 43, 43, 43, 43, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:37:09,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 00:37:09,339 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:37:09,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:37:09,340 INFO L85 PathProgramCache]: Analyzing trace with hash 94502764, now seen corresponding path program 1 times [2022-11-22 00:37:09,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:37:09,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855544532] [2022-11-22 00:37:09,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:37:09,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:37:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:37:11,524 INFO L134 CoverageAnalysis]: Checked inductivity of 7525 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7517 trivial. 0 not checked. [2022-11-22 00:37:11,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:37:11,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855544532] [2022-11-22 00:37:11,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855544532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:37:11,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:37:11,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:37:11,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067161020] [2022-11-22 00:37:11,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:37:11,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:37:11,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:37:11,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:37:11,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:37:11,532 INFO L87 Difference]: Start difference. First operand 71494 states and 104057 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-22 00:37:16,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:21,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:23,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:27,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:37:35,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:37:38,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:40,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:41,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:43,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:45,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:47,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:37:49,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:52,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:37:54,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:37:56,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:58,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:37:58,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:37:58,373 INFO L93 Difference]: Finished difference Result 71520 states and 104078 transitions. [2022-11-22 00:37:58,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:37:58,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 500 [2022-11-22 00:37:58,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:37:58,719 INFO L225 Difference]: With dead ends: 71520 [2022-11-22 00:37:58,719 INFO L226 Difference]: Without dead ends: 71516 [2022-11-22 00:37:58,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:37:58,752 INFO L413 NwaCegarLoop]: 3102 mSDtfsCounter, 3333 mSDsluCounter, 6390 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 1 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3346 SdHoareTripleChecker+Valid, 9492 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:37:58,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3346 Valid, 9492 Invalid, 1616 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1604 Invalid, 11 Unknown, 0 Unchecked, 44.2s Time] [2022-11-22 00:37:58,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71516 states. [2022-11-22 00:38:02,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71516 to 71516. [2022-11-22 00:38:02,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71516 states, 46524 states have (on average 1.3309474679735191) internal successors, (61921), 47241 states have internal predecessors, (61921), 20666 states have call successors, (20666), 4387 states have call predecessors, (20666), 4323 states have return successors, (21484), 20099 states have call predecessors, (21484), 20650 states have call successors, (21484) [2022-11-22 00:38:03,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71516 states to 71516 states and 104071 transitions. [2022-11-22 00:38:03,484 INFO L78 Accepts]: Start accepts. Automaton has 71516 states and 104071 transitions. Word has length 500 [2022-11-22 00:38:03,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:38:03,485 INFO L495 AbstractCegarLoop]: Abstraction has 71516 states and 104071 transitions. [2022-11-22 00:38:03,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-22 00:38:03,486 INFO L276 IsEmpty]: Start isEmpty. Operand 71516 states and 104071 transitions. [2022-11-22 00:38:03,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2022-11-22 00:38:03,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:38:03,498 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:38:03,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 00:38:03,499 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:38:03,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:38:03,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1507390843, now seen corresponding path program 1 times [2022-11-22 00:38:03,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:38:03,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004043923] [2022-11-22 00:38:03,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:38:03,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:38:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:38:04,594 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2022-11-22 00:38:04,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:38:04,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004043923] [2022-11-22 00:38:04,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004043923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:38:04,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:38:04,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:38:04,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40676231] [2022-11-22 00:38:04,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:38:04,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:38:04,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:38:04,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:38:04,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:38:04,598 INFO L87 Difference]: Start difference. First operand 71516 states and 104071 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-22 00:38:07,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:38:11,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:13,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:15,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:17,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:24,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:38:29,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:32,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:34,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:37,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:38:39,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:41,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:38:43,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:38:45,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:47,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:38:48,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:38:48,638 INFO L93 Difference]: Finished difference Result 191133 states and 277030 transitions. [2022-11-22 00:38:48,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:38:48,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 503 [2022-11-22 00:38:48,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:38:49,459 INFO L225 Difference]: With dead ends: 191133 [2022-11-22 00:38:49,459 INFO L226 Difference]: Without dead ends: 119704 [2022-11-22 00:38:49,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:38:49,724 INFO L413 NwaCegarLoop]: 3776 mSDtfsCounter, 2868 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 7 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2878 SdHoareTripleChecker+Valid, 6791 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:38:49,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2878 Valid, 6791 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1116 Invalid, 11 Unknown, 0 Unchecked, 38.0s Time] [2022-11-22 00:38:49,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119704 states. [2022-11-22 00:38:57,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119704 to 119482. [2022-11-22 00:38:57,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119482 states, 77511 states have (on average 1.324302357084801) internal successors, (102648), 78824 states have internal predecessors, (102648), 34347 states have call successors, (34347), 7727 states have call predecessors, (34347), 7621 states have return successors, (35697), 33304 states have call predecessors, (35697), 34331 states have call successors, (35697) [2022-11-22 00:38:58,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119482 states to 119482 states and 172692 transitions. [2022-11-22 00:38:58,766 INFO L78 Accepts]: Start accepts. Automaton has 119482 states and 172692 transitions. Word has length 503 [2022-11-22 00:38:58,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:38:58,767 INFO L495 AbstractCegarLoop]: Abstraction has 119482 states and 172692 transitions. [2022-11-22 00:38:58,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-22 00:38:58,767 INFO L276 IsEmpty]: Start isEmpty. Operand 119482 states and 172692 transitions. [2022-11-22 00:38:58,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2022-11-22 00:38:58,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:38:58,777 INFO L195 NwaCegarLoop]: trace histogram [46, 43, 43, 43, 43, 43, 43, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:38:58,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 00:38:58,778 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:38:58,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:38:58,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1882422552, now seen corresponding path program 1 times [2022-11-22 00:38:58,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:38:58,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333299650] [2022-11-22 00:38:58,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:38:58,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:38:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:39:01,361 INFO L134 CoverageAnalysis]: Checked inductivity of 7558 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7548 trivial. 0 not checked. [2022-11-22 00:39:01,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:39:01,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333299650] [2022-11-22 00:39:01,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333299650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:39:01,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:39:01,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:39:01,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272789727] [2022-11-22 00:39:01,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:39:01,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:39:01,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:39:01,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:39:01,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:39:01,364 INFO L87 Difference]: Start difference. First operand 119482 states and 172692 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-22 00:39:05,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:39:10,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []