./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/bin/utaipan-TEXQjIfE4P --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 4dc730f52c640d2c8e3cb7b93e5d1f8c1973029db6cd19ab3f75108e9e7f0634 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:36:57,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:36:57,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:36:57,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:36:57,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:36:57,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:36:57,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:36:57,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:36:57,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:36:57,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:36:57,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:36:57,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:36:57,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:36:57,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:36:57,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:36:57,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:36:57,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:36:57,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:36:57,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:36:57,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:36:57,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:36:57,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:36:57,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:36:57,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:36:57,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:36:57,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:36:57,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:36:57,092 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:36:57,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:36:57,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:36:57,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:36:57,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:36:57,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:36:57,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:36:57,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:36:57,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:36:57,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:36:57,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:36:57,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:36:57,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:36:57,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:36:57,108 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:36:57,141 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:36:57,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:36:57,142 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:36:57,142 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:36:57,143 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:36:57,143 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:36:57,143 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:36:57,144 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:36:57,144 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:36:57,144 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:36:57,145 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:36:57,145 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:36:57,145 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:36:57,145 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:36:57,146 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:36:57,146 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:36:57,146 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:36:57,147 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:36:57,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:36:57,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:36:57,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:36:57,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:36:57,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:36:57,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:36:57,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:36:57,150 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:36:57,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:36:57,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:36:57,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:36:57,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:36:57,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:36:57,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:36:57,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:36:57,152 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:36:57,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:36:57,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:36:57,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:36:57,153 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:36:57,154 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4dc730f52c640d2c8e3cb7b93e5d1f8c1973029db6cd19ab3f75108e9e7f0634 [2021-11-20 23:36:57,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:36:57,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:36:57,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:36:57,476 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:36:57,477 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:36:57,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i [2021-11-20 23:36:57,578 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/bin/utaipan-TEXQjIfE4P/data/4dc7dc833/66dbe39f9e9b449e8d85c903426b814b/FLAGf2f97a5b3 [2021-11-20 23:36:58,922 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:36:58,923 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i [2021-11-20 23:36:59,036 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/bin/utaipan-TEXQjIfE4P/data/4dc7dc833/66dbe39f9e9b449e8d85c903426b814b/FLAGf2f97a5b3 [2021-11-20 23:36:59,555 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/bin/utaipan-TEXQjIfE4P/data/4dc7dc833/66dbe39f9e9b449e8d85c903426b814b [2021-11-20 23:36:59,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:36:59,559 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:36:59,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:36:59,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:36:59,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:36:59,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:36:59" (1/1) ... [2021-11-20 23:36:59,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cdf47f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:59, skipping insertion in model container [2021-11-20 23:36:59,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:36:59" (1/1) ... [2021-11-20 23:36:59,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:36:59,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:37:04,688 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[570903,570916] [2021-11-20 23:37:04,692 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[571069,571082] [2021-11-20 23:37:04,694 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[571233,571246] [2021-11-20 23:37:04,695 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[571398,571411] [2021-11-20 23:37:04,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:37:04,949 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:37:05,996 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[570903,570916] [2021-11-20 23:37:05,997 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[571069,571082] [2021-11-20 23:37:05,997 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[571233,571246] [2021-11-20 23:37:05,998 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i[571398,571411] [2021-11-20 23:37:06,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:37:06,297 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:37:06,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06 WrapperNode [2021-11-20 23:37:06,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:37:06,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:37:06,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:37:06,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:37:06,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06" (1/1) ... [2021-11-20 23:37:06,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06" (1/1) ... [2021-11-20 23:37:06,847 INFO L137 Inliner]: procedures = 489, calls = 4094, calls flagged for inlining = 273, calls inlined = 262, statements flattened = 8614 [2021-11-20 23:37:06,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:37:06,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:37:06,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:37:06,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:37:06,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06" (1/1) ... [2021-11-20 23:37:06,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06" (1/1) ... [2021-11-20 23:37:06,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06" (1/1) ... [2021-11-20 23:37:06,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06" (1/1) ... [2021-11-20 23:37:07,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06" (1/1) ... [2021-11-20 23:37:07,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06" (1/1) ... [2021-11-20 23:37:07,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06" (1/1) ... [2021-11-20 23:37:07,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:37:07,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:37:07,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:37:07,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:37:07,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06" (1/1) ... [2021-11-20 23:37:07,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:37:07,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:37:07,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:37:07,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:37:07,641 INFO L130 BoogieDeclarations]: Found specification of procedure video_open [2021-11-20 23:37:07,641 INFO L138 BoogieDeclarations]: Found implementation of procedure video_open [2021-11-20 23:37:07,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 23:37:07,642 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 23:37:07,642 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamon [2021-11-20 23:37:07,642 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamon [2021-11-20 23:37:07,642 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_unregister_video [2021-11-20 23:37:07,642 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_unregister_video [2021-11-20 23:37:07,643 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_fmt_vid_cap [2021-11-20 23:37:07,643 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_fmt_vid_cap [2021-11-20 23:37:07,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 23:37:07,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 23:37:07,644 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_input [2021-11-20 23:37:07,644 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_input [2021-11-20 23:37:07,644 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_reqbufs [2021-11-20 23:37:07,645 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_reqbufs [2021-11-20 23:37:07,645 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_enum_fmt_vid_cap [2021-11-20 23:37:07,645 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_enum_fmt_vid_cap [2021-11-20 23:37:07,645 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-20 23:37:07,645 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-20 23:37:07,646 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_tvnorm [2021-11-20 23:37:07,646 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_tvnorm [2021-11-20 23:37:07,646 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_tvaudio [2021-11-20 23:37:07,646 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_tvaudio [2021-11-20 23:37:07,646 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_s_vid_ctrl [2021-11-20 23:37:07,647 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_s_vid_ctrl [2021-11-20 23:37:07,647 INFO L130 BoogieDeclarations]: Found specification of procedure res_free [2021-11-20 23:37:07,647 INFO L138 BoogieDeclarations]: Found implementation of procedure res_free [2021-11-20 23:37:07,647 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-20 23:37:07,648 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-20 23:37:07,648 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_to_dma [2021-11-20 23:37:07,648 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_to_dma [2021-11-20 23:37:07,649 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_shutdown [2021-11-20 23:37:07,649 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_shutdown [2021-11-20 23:37:07,649 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-20 23:37:07,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-20 23:37:07,649 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_fmt_vid_cap [2021-11-20 23:37:07,650 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_fmt_vid_cap [2021-11-20 23:37:07,650 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-20 23:37:07,650 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-20 23:37:07,651 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_newstation [2021-11-20 23:37:07,651 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_newstation [2021-11-20 23:37:07,651 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_std [2021-11-20 23:37:07,652 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_std [2021-11-20 23:37:07,652 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_vdev_init [2021-11-20 23:37:07,652 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_vdev_init [2021-11-20 23:37:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure video_mmap [2021-11-20 23:37:07,653 INFO L138 BoogieDeclarations]: Found implementation of procedure video_mmap [2021-11-20 23:37:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-20 23:37:07,653 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-20 23:37:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-20 23:37:07,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-20 23:37:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-20 23:37:07,654 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-20 23:37:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer [2021-11-20 23:37:07,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer [2021-11-20 23:37:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2021-11-20 23:37:07,654 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2021-11-20 23:37:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-20 23:37:07,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-20 23:37:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_poll [2021-11-20 23:37:07,655 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_poll [2021-11-20 23:37:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_frequency [2021-11-20 23:37:07,655 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_frequency [2021-11-20 23:37:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querybuf [2021-11-20 23:37:07,655 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querybuf [2021-11-20 23:37:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-20 23:37:07,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-20 23:37:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-20 23:37:07,656 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-20 23:37:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_register [2021-11-20 23:37:07,656 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_register [2021-11-20 23:37:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2021-11-20 23:37:07,657 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2021-11-20 23:37:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_setup [2021-11-20 23:37:07,657 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_setup [2021-11-20 23:37:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:37:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_stereo [2021-11-20 23:37:07,657 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_stereo [2021-11-20 23:37:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_vbi_fmt [2021-11-20 23:37:07,658 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_vbi_fmt [2021-11-20 23:37:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-20 23:37:07,658 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-20 23:37:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_audio_thread [2021-11-20 23:37:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-20 23:37:07,658 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-20 23:37:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_try_fmt_vid_cap [2021-11-20 23:37:07,659 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_try_fmt_vid_cap [2021-11-20 23:37:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2021-11-20 23:37:07,659 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2021-11-20 23:37:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:37:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2021-11-20 23:37:07,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2021-11-20 23:37:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-20 23:37:07,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-20 23:37:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_restart_vbi_queue [2021-11-20 23:37:07,660 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_restart_vbi_queue [2021-11-20 23:37:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_vb_lock_of_videobuf_queue [2021-11-20 23:37:07,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_vb_lock_of_videobuf_queue [2021-11-20 23:37:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:37:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_finidev [2021-11-20 23:37:07,661 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_finidev [2021-11-20 23:37:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-20 23:37:07,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-20 23:37:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2021-11-20 23:37:07,661 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2021-11-20 23:37:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_querycap [2021-11-20 23:37:07,662 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_querycap [2021-11-20 23:37:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-20 23:37:07,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-20 23:37:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_freq [2021-11-20 23:37:07,662 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_freq [2021-11-20 23:37:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-20 23:37:07,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-20 23:37:07,663 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_s_aud_ctrl [2021-11-20 23:37:07,663 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_s_aud_ctrl [2021-11-20 23:37:07,663 INFO L130 BoogieDeclarations]: Found specification of procedure video_read [2021-11-20 23:37:07,663 INFO L138 BoogieDeclarations]: Found implementation of procedure video_read [2021-11-20 23:37:07,663 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-20 23:37:07,663 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-20 23:37:07,664 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_video_mux [2021-11-20 23:37:07,664 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_video_mux [2021-11-20 23:37:07,664 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-20 23:37:07,664 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-20 23:37:07,664 INFO L130 BoogieDeclarations]: Found specification of procedure video_is_registered [2021-11-20 23:37:07,664 INFO L138 BoogieDeclarations]: Found implementation of procedure video_is_registered [2021-11-20 23:37:07,664 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_subscribe_event [2021-11-20 23:37:07,665 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_subscribe_event [2021-11-20 23:37:07,665 INFO L130 BoogieDeclarations]: Found specification of procedure video_unregister_device [2021-11-20 23:37:07,665 INFO L138 BoogieDeclarations]: Found implementation of procedure video_unregister_device [2021-11-20 23:37:07,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:37:07,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-20 23:37:07,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-20 23:37:07,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-20 23:37:07,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-20 23:37:07,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-20 23:37:07,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-20 23:37:07,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-20 23:37:07,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-20 23:37:07,666 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_queue_sg_init [2021-11-20 23:37:07,667 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_queue_sg_init [2021-11-20 23:37:07,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:37:07,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-20 23:37:07,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-20 23:37:07,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:37:07,667 INFO L130 BoogieDeclarations]: Found specification of procedure video_release [2021-11-20 23:37:07,668 INFO L138 BoogieDeclarations]: Found implementation of procedure video_release [2021-11-20 23:37:07,668 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:37:07,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:37:07,668 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-20 23:37:07,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-20 23:37:07,668 INFO L130 BoogieDeclarations]: Found specification of procedure restart_video_queue [2021-11-20 23:37:07,668 INFO L138 BoogieDeclarations]: Found implementation of procedure restart_video_queue [2021-11-20 23:37:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_qbuf [2021-11-20 23:37:07,669 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_qbuf [2021-11-20 23:37:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_wakeup [2021-11-20 23:37:07,669 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_wakeup [2021-11-20 23:37:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-20 23:37:07,669 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-20 23:37:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_s_ctrl [2021-11-20 23:37:07,670 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_s_ctrl [2021-11-20 23:37:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_iolock [2021-11-20 23:37:07,670 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_iolock [2021-11-20 23:37:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_enum_input [2021-11-20 23:37:07,670 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_enum_input [2021-11-20 23:37:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_sram_channel_dump [2021-11-20 23:37:07,670 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_sram_channel_dump [2021-11-20 23:37:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure video_set_drvdata [2021-11-20 23:37:07,671 INFO L138 BoogieDeclarations]: Found implementation of procedure video_set_drvdata [2021-11-20 23:37:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_tuner [2021-11-20 23:37:07,671 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_tuner [2021-11-20 23:37:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure res_check [2021-11-20 23:37:07,671 INFO L138 BoogieDeclarations]: Found implementation of procedure res_check [2021-11-20 23:37:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure format_by_fourcc [2021-11-20 23:37:07,672 INFO L138 BoogieDeclarations]: Found implementation of procedure format_by_fourcc [2021-11-20 23:37:07,672 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_risc_buffer [2021-11-20 23:37:07,672 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_risc_buffer [2021-11-20 23:37:07,672 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-20 23:37:07,672 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-20 23:37:07,672 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-20 23:37:07,672 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-20 23:37:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_unsubscribe [2021-11-20 23:37:07,673 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_event_unsubscribe [2021-11-20 23:37:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:37:07,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:37:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_risc_stopper [2021-11-20 23:37:07,673 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_risc_stopper [2021-11-20 23:37:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-20 23:37:07,673 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-20 23:37:07,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-20 23:37:07,674 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-20 23:37:07,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 23:37:07,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 23:37:07,674 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_std [2021-11-20 23:37:07,675 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_std [2021-11-20 23:37:07,675 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamoff [2021-11-20 23:37:07,675 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamoff [2021-11-20 23:37:07,675 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_sram_channel_setup [2021-11-20 23:37:07,675 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_sram_channel_setup [2021-11-20 23:37:07,675 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_free_buffer [2021-11-20 23:37:07,675 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_free_buffer [2021-11-20 23:37:07,676 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2021-11-20 23:37:07,676 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2021-11-20 23:37:07,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-20 23:37:07,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-20 23:37:07,676 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_enum_input [2021-11-20 23:37:07,676 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_enum_input [2021-11-20 23:37:07,676 INFO L130 BoogieDeclarations]: Found specification of procedure res_get [2021-11-20 23:37:07,677 INFO L138 BoogieDeclarations]: Found implementation of procedure res_get [2021-11-20 23:37:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_mmap_free [2021-11-20 23:37:07,677 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_mmap_free [2021-11-20 23:37:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_resume [2021-11-20 23:37:07,677 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_resume [2021-11-20 23:37:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_cx8800_pci_driver_exit_15_2 [2021-11-20 23:37:07,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_cx8800_pci_driver_exit_15_2 [2021-11-20 23:37:07,678 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_frequency [2021-11-20 23:37:07,678 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_frequency [2021-11-20 23:37:07,678 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-11-20 23:37:07,678 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-11-20 23:37:07,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-20 23:37:07,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-20 23:37:07,678 INFO L130 BoogieDeclarations]: Found specification of procedure video_poll [2021-11-20 23:37:07,679 INFO L138 BoogieDeclarations]: Found implementation of procedure video_poll [2021-11-20 23:37:07,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:37:07,679 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-20 23:37:07,679 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-20 23:37:07,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:37:07,679 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_core_put [2021-11-20 23:37:07,679 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_core_put [2021-11-20 23:37:07,679 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_find [2021-11-20 23:37:07,680 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_find [2021-11-20 23:37:07,680 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_release [2021-11-20 23:37:07,680 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_release [2021-11-20 23:37:07,680 INFO L130 BoogieDeclarations]: Found specification of procedure start_video_dma [2021-11-20 23:37:07,680 INFO L138 BoogieDeclarations]: Found implementation of procedure start_video_dma [2021-11-20 23:37:07,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:37:07,680 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_node_name [2021-11-20 23:37:07,681 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_node_name [2021-11-20 23:37:07,681 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-20 23:37:07,681 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-20 23:37:07,681 INFO L130 BoogieDeclarations]: Found specification of procedure get_queue [2021-11-20 23:37:07,681 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queue [2021-11-20 23:37:07,681 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-20 23:37:07,681 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-20 23:37:07,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-20 23:37:07,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-20 23:37:07,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-20 23:37:07,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-20 23:37:07,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-20 23:37:07,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-20 23:37:07,682 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_dqbuf [2021-11-20 23:37:07,682 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_dqbuf [2021-11-20 23:37:07,683 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-20 23:37:07,683 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-20 23:37:07,683 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querycap [2021-11-20 23:37:07,683 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querycap [2021-11-20 23:37:07,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-20 23:37:07,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-20 23:37:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure video_register_device [2021-11-20 23:37:07,774 INFO L138 BoogieDeclarations]: Found implementation of procedure video_register_device [2021-11-20 23:37:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_cx88_core [2021-11-20 23:37:07,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_cx88_core [2021-11-20 23:37:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_cx88_core [2021-11-20 23:37:07,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_cx88_core [2021-11-20 23:37:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 23:37:07,775 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 23:37:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-20 23:37:07,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-20 23:37:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:37:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:37:07,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:37:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_input [2021-11-20 23:37:07,776 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_input [2021-11-20 23:37:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-20 23:37:07,776 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-20 23:37:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_tuner [2021-11-20 23:37:07,776 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_tuner [2021-11-20 23:37:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-20 23:37:07,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-20 23:37:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_start_vbi_dma [2021-11-20 23:37:07,777 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_start_vbi_dma [2021-11-20 23:37:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_ir_stop [2021-11-20 23:37:07,777 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_ir_stop [2021-11-20 23:37:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_register [2021-11-20 23:37:07,777 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_register [2021-11-20 23:37:07,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-20 23:37:07,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-20 23:37:07,778 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-20 23:37:07,778 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-20 23:37:07,778 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-20 23:37:07,778 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-20 23:37:07,779 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxw [2021-11-20 23:37:07,779 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxw [2021-11-20 23:37:07,779 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-20 23:37:07,779 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-20 23:37:07,779 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxh [2021-11-20 23:37:07,779 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxh [2021-11-20 23:37:07,779 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-20 23:37:07,779 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-20 23:37:07,780 INFO L130 BoogieDeclarations]: Found specification of procedure get_resource [2021-11-20 23:37:07,780 INFO L138 BoogieDeclarations]: Found implementation of procedure get_resource [2021-11-20 23:37:07,780 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-20 23:37:07,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-20 23:37:07,780 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-20 23:37:07,780 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-20 23:37:07,780 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_initdev [2021-11-20 23:37:07,781 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_initdev [2021-11-20 23:37:07,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:37:07,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-20 23:37:07,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-20 23:37:09,370 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:37:09,376 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:37:09,860 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 23:37:42,264 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-20 23:37:42,412 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:37:44,099 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:37:44,099 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-20 23:37:44,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:37:44 BoogieIcfgContainer [2021-11-20 23:37:44,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:37:44,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:37:44,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:37:44,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:37:44,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:36:59" (1/3) ... [2021-11-20 23:37:44,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3cee39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:37:44, skipping insertion in model container [2021-11-20 23:37:44,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06" (2/3) ... [2021-11-20 23:37:44,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3cee39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:37:44, skipping insertion in model container [2021-11-20 23:37:44,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:37:44" (3/3) ... [2021-11-20 23:37:44,122 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-pci-cx88-cx8800.cil.i [2021-11-20 23:37:44,129 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:37:44,129 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-20 23:37:44,222 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:37:44,237 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:37:44,237 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-20 23:37:44,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 2246 states, 1337 states have (on average 1.2976813762154076) internal successors, (1735), 1352 states have internal predecessors, (1735), 759 states have call successors, (759), 148 states have call predecessors, (759), 147 states have return successors, (752), 751 states have call predecessors, (752), 752 states have call successors, (752) [2021-11-20 23:37:44,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2021-11-20 23:37:44,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:44,379 INFO L514 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 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] [2021-11-20 23:37:44,380 INFO L402 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)] === [2021-11-20 23:37:44,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:44,387 INFO L85 PathProgramCache]: Analyzing trace with hash -626521983, now seen corresponding path program 1 times [2021-11-20 23:37:44,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:44,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002910876] [2021-11-20 23:37:44,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:44,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:45,886 INFO L134 CoverageAnalysis]: Checked inductivity of 9509 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9509 trivial. 0 not checked. [2021-11-20 23:37:45,887 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:45,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002910876] [2021-11-20 23:37:45,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002910876] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:45,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:45,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:37:45,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120771675] [2021-11-20 23:37:45,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:45,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:37:45,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:45,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:37:45,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:37:45,942 INFO L87 Difference]: Start difference. First operand has 2246 states, 1337 states have (on average 1.2976813762154076) internal successors, (1735), 1352 states have internal predecessors, (1735), 759 states have call successors, (759), 148 states have call predecessors, (759), 147 states have return successors, (752), 751 states have call predecessors, (752), 752 states have call successors, (752) Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-20 23:37:48,006 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:51,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:51,428 INFO L93 Difference]: Finished difference Result 6461 states and 9491 transitions. [2021-11-20 23:37:51,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:37:51,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 514 [2021-11-20 23:37:51,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:51,507 INFO L225 Difference]: With dead ends: 6461 [2021-11-20 23:37:51,508 INFO L226 Difference]: Without dead ends: 4303 [2021-11-20 23:37:51,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:37:51,539 INFO L933 BasicCegarLoop]: 3443 mSDtfsCounter, 3004 mSDsluCounter, 3177 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3004 SdHoareTripleChecker+Valid, 6169 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:51,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3004 Valid, 6169 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-20 23:37:51,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4303 states. [2021-11-20 23:37:52,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4303 to 4299. [2021-11-20 23:37:52,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4299 states, 2581 states have (on average 1.2932971716388997) internal successors, (3338), 2610 states have internal predecessors, (3338), 1425 states have call successors, (1425), 291 states have call predecessors, (1425), 290 states have return successors, (1421), 1419 states have call predecessors, (1421), 1421 states have call successors, (1421) [2021-11-20 23:37:52,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4299 states to 4299 states and 6184 transitions. [2021-11-20 23:37:52,107 INFO L78 Accepts]: Start accepts. Automaton has 4299 states and 6184 transitions. Word has length 514 [2021-11-20 23:37:52,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:52,112 INFO L470 AbstractCegarLoop]: Abstraction has 4299 states and 6184 transitions. [2021-11-20 23:37:52,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-20 23:37:52,115 INFO L276 IsEmpty]: Start isEmpty. Operand 4299 states and 6184 transitions. [2021-11-20 23:37:52,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2021-11-20 23:37:52,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:52,141 INFO L514 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:52,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:37:52,142 INFO L402 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)] === [2021-11-20 23:37:52,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:52,144 INFO L85 PathProgramCache]: Analyzing trace with hash -135381459, now seen corresponding path program 1 times [2021-11-20 23:37:52,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:52,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181406650] [2021-11-20 23:37:52,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:52,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:53,225 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2021-11-20 23:37:53,225 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:53,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181406650] [2021-11-20 23:37:53,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181406650] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:53,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:53,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:37:53,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156455101] [2021-11-20 23:37:53,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:53,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:37:53,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:53,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:37:53,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:37:53,236 INFO L87 Difference]: Start difference. First operand 4299 states and 6184 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, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-20 23:37:57,331 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:38:00,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:00,647 INFO L93 Difference]: Finished difference Result 12353 states and 17690 transitions. [2021-11-20 23:38:00,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:38:00,648 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, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 526 [2021-11-20 23:38:00,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:00,736 INFO L225 Difference]: With dead ends: 12353 [2021-11-20 23:38:00,737 INFO L226 Difference]: Without dead ends: 8153 [2021-11-20 23:38:00,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:00,761 INFO L933 BasicCegarLoop]: 3369 mSDtfsCounter, 2756 mSDsluCounter, 3089 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2756 SdHoareTripleChecker+Valid, 6061 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:00,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2756 Valid, 6061 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 993 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2021-11-20 23:38:00,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8153 states. [2021-11-20 23:38:01,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8153 to 8130. [2021-11-20 23:38:01,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8130 states, 4916 states have (on average 1.2914971521562246) internal successors, (6349), 4976 states have internal predecessors, (6349), 2632 states have call successors, (2632), 580 states have call predecessors, (2632), 579 states have return successors, (2628), 2617 states have call predecessors, (2628), 2628 states have call successors, (2628) [2021-11-20 23:38:01,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8130 states to 8130 states and 11609 transitions. [2021-11-20 23:38:01,283 INFO L78 Accepts]: Start accepts. Automaton has 8130 states and 11609 transitions. Word has length 526 [2021-11-20 23:38:01,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:01,285 INFO L470 AbstractCegarLoop]: Abstraction has 8130 states and 11609 transitions. [2021-11-20 23:38:01,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-20 23:38:01,287 INFO L276 IsEmpty]: Start isEmpty. Operand 8130 states and 11609 transitions. [2021-11-20 23:38:01,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2021-11-20 23:38:01,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:01,309 INFO L514 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:01,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:38:01,310 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:38:01,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:01,310 INFO L85 PathProgramCache]: Analyzing trace with hash 929342936, now seen corresponding path program 1 times [2021-11-20 23:38:01,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:01,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155514088] [2021-11-20 23:38:01,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:01,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:02,063 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2021-11-20 23:38:02,064 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:02,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155514088] [2021-11-20 23:38:02,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155514088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:02,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:02,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:38:02,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295307797] [2021-11-20 23:38:02,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:02,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:38:02,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:02,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:38:02,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:02,072 INFO L87 Difference]: Start difference. First operand 8130 states and 11609 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-20 23:38:06,217 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:10,065 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:38:11,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:11,304 INFO L93 Difference]: Finished difference Result 18787 states and 26734 transitions. [2021-11-20 23:38:11,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:38:11,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 525 [2021-11-20 23:38:11,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:11,430 INFO L225 Difference]: With dead ends: 18787 [2021-11-20 23:38:11,431 INFO L226 Difference]: Without dead ends: 10756 [2021-11-20 23:38:11,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:11,492 INFO L933 BasicCegarLoop]: 3378 mSDtfsCounter, 2749 mSDsluCounter, 3089 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2751 SdHoareTripleChecker+Valid, 6068 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:11,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2751 Valid, 6068 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 995 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2021-11-20 23:38:11,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10756 states. [2021-11-20 23:38:12,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10756 to 10732. [2021-11-20 23:38:12,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10732 states, 6480 states have (on average 1.2796296296296297) internal successors, (8292), 6576 states have internal predecessors, (8292), 3458 states have call successors, (3458), 792 states have call predecessors, (3458), 791 states have return successors, (3456), 3429 states have call predecessors, (3456), 3454 states have call successors, (3456) [2021-11-20 23:38:12,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10732 states to 10732 states and 15206 transitions. [2021-11-20 23:38:12,283 INFO L78 Accepts]: Start accepts. Automaton has 10732 states and 15206 transitions. Word has length 525 [2021-11-20 23:38:12,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:12,286 INFO L470 AbstractCegarLoop]: Abstraction has 10732 states and 15206 transitions. [2021-11-20 23:38:12,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-20 23:38:12,286 INFO L276 IsEmpty]: Start isEmpty. Operand 10732 states and 15206 transitions. [2021-11-20 23:38:12,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2021-11-20 23:38:12,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:12,310 INFO L514 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:12,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:38:12,310 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:38:12,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:12,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1094172796, now seen corresponding path program 1 times [2021-11-20 23:38:12,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:12,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015816809] [2021-11-20 23:38:12,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:12,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:13,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2021-11-20 23:38:13,081 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:13,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015816809] [2021-11-20 23:38:13,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015816809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:13,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:13,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:38:13,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435242848] [2021-11-20 23:38:13,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:13,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:38:13,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:13,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:38:13,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:13,085 INFO L87 Difference]: Start difference. First operand 10732 states and 15206 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-20 23:38:17,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:38:20,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:20,496 INFO L93 Difference]: Finished difference Result 26731 states and 37934 transitions. [2021-11-20 23:38:20,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:38:20,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 531 [2021-11-20 23:38:20,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:20,648 INFO L225 Difference]: With dead ends: 26731 [2021-11-20 23:38:20,648 INFO L226 Difference]: Without dead ends: 16098 [2021-11-20 23:38:20,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:20,731 INFO L933 BasicCegarLoop]: 3894 mSDtfsCounter, 2816 mSDsluCounter, 3161 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2816 SdHoareTripleChecker+Valid, 6604 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:20,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2816 Valid, 6604 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2021-11-20 23:38:20,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16098 states. [2021-11-20 23:38:22,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16098 to 16073. [2021-11-20 23:38:22,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16073 states, 9787 states have (on average 1.2854807397568202) internal successors, (12581), 9934 states have internal predecessors, (12581), 5089 states have call successors, (5089), 1199 states have call predecessors, (5089), 1194 states have return successors, (5089), 5029 states have call predecessors, (5089), 5085 states have call successors, (5089) [2021-11-20 23:38:22,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16073 states to 16073 states and 22759 transitions. [2021-11-20 23:38:22,213 INFO L78 Accepts]: Start accepts. Automaton has 16073 states and 22759 transitions. Word has length 531 [2021-11-20 23:38:22,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:22,215 INFO L470 AbstractCegarLoop]: Abstraction has 16073 states and 22759 transitions. [2021-11-20 23:38:22,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-20 23:38:22,216 INFO L276 IsEmpty]: Start isEmpty. Operand 16073 states and 22759 transitions. [2021-11-20 23:38:22,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2021-11-20 23:38:22,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:22,233 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:22,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:38:22,235 INFO L402 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)] === [2021-11-20 23:38:22,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:22,236 INFO L85 PathProgramCache]: Analyzing trace with hash -952654552, now seen corresponding path program 1 times [2021-11-20 23:38:22,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:22,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491724093] [2021-11-20 23:38:22,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:22,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:23,911 INFO L134 CoverageAnalysis]: Checked inductivity of 9846 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9846 trivial. 0 not checked. [2021-11-20 23:38:23,912 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:23,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491724093] [2021-11-20 23:38:23,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491724093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:23,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:23,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:38:23,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676177226] [2021-11-20 23:38:23,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:23,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:38:23,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:23,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:38:23,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:38:23,917 INFO L87 Difference]: Start difference. First operand 16073 states and 22759 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-20 23:38:28,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:38:31,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:31,221 INFO L93 Difference]: Finished difference Result 16079 states and 22764 transitions. [2021-11-20 23:38:31,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:38:31,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 560 [2021-11-20 23:38:31,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:31,316 INFO L225 Difference]: With dead ends: 16079 [2021-11-20 23:38:31,317 INFO L226 Difference]: Without dead ends: 16077 [2021-11-20 23:38:31,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:38:31,328 INFO L933 BasicCegarLoop]: 2745 mSDtfsCounter, 3087 mSDsluCounter, 6413 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3092 SdHoareTripleChecker+Valid, 8228 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:31,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3092 Valid, 8228 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-11-20 23:38:31,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16077 states. [2021-11-20 23:38:32,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16077 to 16077. [2021-11-20 23:38:32,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16077 states, 9790 states have (on average 1.2853932584269663) internal successors, (12584), 9937 states have internal predecessors, (12584), 5089 states have call successors, (5089), 1200 states have call predecessors, (5089), 1195 states have return successors, (5089), 5029 states have call predecessors, (5089), 5085 states have call successors, (5089) [2021-11-20 23:38:32,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16077 states to 16077 states and 22762 transitions. [2021-11-20 23:38:32,389 INFO L78 Accepts]: Start accepts. Automaton has 16077 states and 22762 transitions. Word has length 560 [2021-11-20 23:38:32,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:32,390 INFO L470 AbstractCegarLoop]: Abstraction has 16077 states and 22762 transitions. [2021-11-20 23:38:32,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-20 23:38:32,391 INFO L276 IsEmpty]: Start isEmpty. Operand 16077 states and 22762 transitions. [2021-11-20 23:38:32,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2021-11-20 23:38:32,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:32,403 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:32,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:38:32,404 INFO L402 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)] === [2021-11-20 23:38:32,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:32,405 INFO L85 PathProgramCache]: Analyzing trace with hash 846444446, now seen corresponding path program 1 times [2021-11-20 23:38:32,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:32,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382755388] [2021-11-20 23:38:32,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:32,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:33,326 INFO L134 CoverageAnalysis]: Checked inductivity of 9848 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9846 trivial. 0 not checked. [2021-11-20 23:38:33,326 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:33,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382755388] [2021-11-20 23:38:33,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382755388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:33,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:33,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:38:33,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165782931] [2021-11-20 23:38:33,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:33,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:38:33,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:33,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:38:33,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:38:33,329 INFO L87 Difference]: Start difference. First operand 16077 states and 22762 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-20 23:38:39,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:39,069 INFO L93 Difference]: Finished difference Result 16083 states and 22767 transitions. [2021-11-20 23:38:39,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:38:39,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 565 [2021-11-20 23:38:39,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:39,165 INFO L225 Difference]: With dead ends: 16083 [2021-11-20 23:38:39,165 INFO L226 Difference]: Without dead ends: 16081 [2021-11-20 23:38:39,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:38:39,179 INFO L933 BasicCegarLoop]: 2748 mSDtfsCounter, 3082 mSDsluCounter, 6413 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3086 SdHoareTripleChecker+Valid, 8231 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:39,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3086 Valid, 8231 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-20 23:38:39,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16081 states. [2021-11-20 23:38:40,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16081 to 16081. [2021-11-20 23:38:40,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16081 states, 9793 states have (on average 1.2853058306953946) internal successors, (12587), 9940 states have internal predecessors, (12587), 5089 states have call successors, (5089), 1201 states have call predecessors, (5089), 1196 states have return successors, (5089), 5029 states have call predecessors, (5089), 5085 states have call successors, (5089) [2021-11-20 23:38:40,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16081 states to 16081 states and 22765 transitions. [2021-11-20 23:38:40,198 INFO L78 Accepts]: Start accepts. Automaton has 16081 states and 22765 transitions. Word has length 565 [2021-11-20 23:38:40,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:40,199 INFO L470 AbstractCegarLoop]: Abstraction has 16081 states and 22765 transitions. [2021-11-20 23:38:40,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-20 23:38:40,200 INFO L276 IsEmpty]: Start isEmpty. Operand 16081 states and 22765 transitions. [2021-11-20 23:38:40,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2021-11-20 23:38:40,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:40,213 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:40,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:38:40,214 INFO L402 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)] === [2021-11-20 23:38:40,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:40,214 INFO L85 PathProgramCache]: Analyzing trace with hash 775686865, now seen corresponding path program 1 times [2021-11-20 23:38:40,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:40,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210796313] [2021-11-20 23:38:40,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:40,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:41,426 INFO L134 CoverageAnalysis]: Checked inductivity of 9851 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9847 trivial. 0 not checked. [2021-11-20 23:38:41,427 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:41,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210796313] [2021-11-20 23:38:41,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210796313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:41,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:41,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:38:41,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708294] [2021-11-20 23:38:41,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:41,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:38:41,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:41,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:38:41,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:38:41,430 INFO L87 Difference]: Start difference. First operand 16081 states and 22765 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-20 23:38:44,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:38:46,884 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:38:50,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:50,728 INFO L93 Difference]: Finished difference Result 29685 states and 42199 transitions. [2021-11-20 23:38:50,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:38:50,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 571 [2021-11-20 23:38:50,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:50,935 INFO L225 Difference]: With dead ends: 29685 [2021-11-20 23:38:50,935 INFO L226 Difference]: Without dead ends: 29683 [2021-11-20 23:38:50,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:38:50,948 INFO L933 BasicCegarLoop]: 3455 mSDtfsCounter, 2750 mSDsluCounter, 10872 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2753 SdHoareTripleChecker+Valid, 12935 SdHoareTripleChecker+Invalid, 1881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:50,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2753 Valid, 12935 Invalid, 1881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2021-11-20 23:38:50,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29683 states. [2021-11-20 23:38:52,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29683 to 29627. [2021-11-20 23:38:52,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29627 states, 18025 states have (on average 1.2895423023578363) internal successors, (23244), 18384 states have internal predecessors, (23244), 9354 states have call successors, (9354), 2292 states have call predecessors, (9354), 2245 states have return successors, (9536), 9098 states have call predecessors, (9536), 9346 states have call successors, (9536) [2021-11-20 23:38:52,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29627 states to 29627 states and 42134 transitions. [2021-11-20 23:38:52,730 INFO L78 Accepts]: Start accepts. Automaton has 29627 states and 42134 transitions. Word has length 571 [2021-11-20 23:38:52,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:52,732 INFO L470 AbstractCegarLoop]: Abstraction has 29627 states and 42134 transitions. [2021-11-20 23:38:52,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-20 23:38:52,732 INFO L276 IsEmpty]: Start isEmpty. Operand 29627 states and 42134 transitions. [2021-11-20 23:38:52,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2021-11-20 23:38:52,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:52,749 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:52,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:38:52,749 INFO L402 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)] === [2021-11-20 23:38:52,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:52,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1155311006, now seen corresponding path program 1 times [2021-11-20 23:38:52,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:52,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067632216] [2021-11-20 23:38:52,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:52,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:53,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9864 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9858 trivial. 0 not checked. [2021-11-20 23:38:53,963 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:53,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067632216] [2021-11-20 23:38:53,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067632216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:53,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:53,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:38:53,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986562070] [2021-11-20 23:38:53,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:53,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:38:53,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:53,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:38:53,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:38:53,966 INFO L87 Difference]: Start difference. First operand 29627 states and 42134 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2021-11-20 23:38:57,238 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:00,167 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:00,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:00,320 INFO L93 Difference]: Finished difference Result 29637 states and 42143 transitions. [2021-11-20 23:39:00,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:39:00,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) Word has length 575 [2021-11-20 23:39:00,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:00,530 INFO L225 Difference]: With dead ends: 29637 [2021-11-20 23:39:00,530 INFO L226 Difference]: Without dead ends: 29635 [2021-11-20 23:39:00,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:39:00,542 INFO L933 BasicCegarLoop]: 2748 mSDtfsCounter, 3082 mSDsluCounter, 6413 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3084 SdHoareTripleChecker+Valid, 8231 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:00,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3084 Valid, 8231 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-11-20 23:39:00,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29635 states. [2021-11-20 23:39:02,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29635 to 29635. [2021-11-20 23:39:02,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29635 states, 18031 states have (on average 1.289445954190006) internal successors, (23250), 18390 states have internal predecessors, (23250), 9354 states have call successors, (9354), 2294 states have call predecessors, (9354), 2247 states have return successors, (9536), 9098 states have call predecessors, (9536), 9346 states have call successors, (9536) [2021-11-20 23:39:02,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29635 states to 29635 states and 42140 transitions. [2021-11-20 23:39:02,727 INFO L78 Accepts]: Start accepts. Automaton has 29635 states and 42140 transitions. Word has length 575 [2021-11-20 23:39:02,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:02,728 INFO L470 AbstractCegarLoop]: Abstraction has 29635 states and 42140 transitions. [2021-11-20 23:39:02,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2021-11-20 23:39:02,728 INFO L276 IsEmpty]: Start isEmpty. Operand 29635 states and 42140 transitions. [2021-11-20 23:39:02,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2021-11-20 23:39:02,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:02,751 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:02,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:39:02,752 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:39:02,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:02,753 INFO L85 PathProgramCache]: Analyzing trace with hash 123841809, now seen corresponding path program 1 times [2021-11-20 23:39:02,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:02,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832579111] [2021-11-20 23:39:02,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:02,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:03,768 INFO L134 CoverageAnalysis]: Checked inductivity of 9875 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9867 trivial. 0 not checked. [2021-11-20 23:39:03,768 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:03,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832579111] [2021-11-20 23:39:03,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832579111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:03,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:03,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:39:03,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019806536] [2021-11-20 23:39:03,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:03,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:39:03,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:03,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:39:03,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:39:03,772 INFO L87 Difference]: Start difference. First operand 29635 states and 42140 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-20 23:39:06,771 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:39:08,996 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:12,037 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:39:15,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:15,637 INFO L93 Difference]: Finished difference Result 56012 states and 79662 transitions. [2021-11-20 23:39:15,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:39:15,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 581 [2021-11-20 23:39:15,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:15,871 INFO L225 Difference]: With dead ends: 56012 [2021-11-20 23:39:15,871 INFO L226 Difference]: Without dead ends: 56008 [2021-11-20 23:39:15,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:39:15,902 INFO L933 BasicCegarLoop]: 3906 mSDtfsCounter, 3078 mSDsluCounter, 12097 mSDsCounter, 0 mSdLazyCounter, 2327 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3079 SdHoareTripleChecker+Valid, 14307 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2327 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:15,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3079 Valid, 14307 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2327 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2021-11-20 23:39:15,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56008 states. [2021-11-20 23:39:18,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56008 to 55992. [2021-11-20 23:39:18,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55992 states, 34052 states have (on average 1.2899095500998472) internal successors, (43924), 34746 states have internal predecessors, (43924), 17689 states have call successors, (17689), 4338 states have call predecessors, (17689), 4248 states have return successors, (18031), 17189 states have call predecessors, (18031), 17673 states have call successors, (18031) [2021-11-20 23:39:18,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55992 states to 55992 states and 79644 transitions. [2021-11-20 23:39:18,852 INFO L78 Accepts]: Start accepts. Automaton has 55992 states and 79644 transitions. Word has length 581 [2021-11-20 23:39:18,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:18,853 INFO L470 AbstractCegarLoop]: Abstraction has 55992 states and 79644 transitions. [2021-11-20 23:39:18,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-20 23:39:18,854 INFO L276 IsEmpty]: Start isEmpty. Operand 55992 states and 79644 transitions. [2021-11-20 23:39:18,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2021-11-20 23:39:18,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:18,875 INFO L514 BasicCegarLoop]: trace histogram [51, 49, 49, 49, 49, 49, 49, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:18,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 23:39:18,875 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:39:18,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:18,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1346275975, now seen corresponding path program 1 times [2021-11-20 23:39:18,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:18,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311058157] [2021-11-20 23:39:18,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:18,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:19,063 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:39:19,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221761931] [2021-11-20 23:39:19,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:19,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:39:19,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:39:19,071 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:39:19,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:39:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:21,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 8801 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:39:21,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:22,421 INFO L134 CoverageAnalysis]: Checked inductivity of 9643 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 9447 trivial. 0 not checked. [2021-11-20 23:39:22,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:39:22,422 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:22,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311058157] [2021-11-20 23:39:22,422 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:39:22,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221761931] [2021-11-20 23:39:22,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221761931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:22,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:22,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:39:22,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657851542] [2021-11-20 23:39:22,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:22,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:39:22,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:22,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:39:22,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:39:22,426 INFO L87 Difference]: Start difference. First operand 55992 states and 79644 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-20 23:39:26,031 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:30,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:30,200 INFO L93 Difference]: Finished difference Result 101854 states and 144270 transitions. [2021-11-20 23:39:30,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:39:30,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 586 [2021-11-20 23:39:30,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:30,737 INFO L225 Difference]: With dead ends: 101854 [2021-11-20 23:39:30,737 INFO L226 Difference]: Without dead ends: 72318 [2021-11-20 23:39:30,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:39:30,828 INFO L933 BasicCegarLoop]: 3608 mSDtfsCounter, 2870 mSDsluCounter, 3007 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2870 SdHoareTripleChecker+Valid, 6220 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:30,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2870 Valid, 6220 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-11-20 23:39:30,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72318 states. [2021-11-20 23:39:33,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72318 to 72011. [2021-11-20 23:39:33,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72011 states, 43882 states have (on average 1.288842805706212) internal successors, (56557), 44733 states have internal predecessors, (56557), 22434 states have call successors, (22434), 5810 states have call predecessors, (22434), 5692 states have return successors, (22848), 21825 states have call predecessors, (22848), 22418 states have call successors, (22848) [2021-11-20 23:39:34,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72011 states to 72011 states and 101839 transitions. [2021-11-20 23:39:34,154 INFO L78 Accepts]: Start accepts. Automaton has 72011 states and 101839 transitions. Word has length 586 [2021-11-20 23:39:34,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:34,155 INFO L470 AbstractCegarLoop]: Abstraction has 72011 states and 101839 transitions. [2021-11-20 23:39:34,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-20 23:39:34,156 INFO L276 IsEmpty]: Start isEmpty. Operand 72011 states and 101839 transitions. [2021-11-20 23:39:34,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2021-11-20 23:39:34,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:34,176 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:34,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:39:34,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4013918c-927c-424a-b2e3-a7df5d1ed466/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-20 23:39:34,390 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:39:34,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:34,391 INFO L85 PathProgramCache]: Analyzing trace with hash -197377891, now seen corresponding path program 1 times [2021-11-20 23:39:34,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:34,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609653018] [2021-11-20 23:39:34,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:34,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 9833 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9830 trivial. 0 not checked. [2021-11-20 23:39:35,361 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:35,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609653018] [2021-11-20 23:39:35,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609653018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:35,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:35,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:39:35,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984815328] [2021-11-20 23:39:35,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:35,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:39:35,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:35,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:39:35,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:39:35,365 INFO L87 Difference]: Start difference. First operand 72011 states and 101839 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2021-11-20 23:39:38,257 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:43,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:43,294 INFO L93 Difference]: Finished difference Result 166239 states and 235420 transitions. [2021-11-20 23:39:43,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:39:43,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 582 [2021-11-20 23:39:43,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:43,839 INFO L225 Difference]: With dead ends: 166239 [2021-11-20 23:39:43,840 INFO L226 Difference]: Without dead ends: 101396 [2021-11-20 23:39:44,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:39:44,084 INFO L933 BasicCegarLoop]: 4134 mSDtfsCounter, 2811 mSDsluCounter, 3159 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2811 SdHoareTripleChecker+Valid, 6842 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:44,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2811 Valid, 6842 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-20 23:39:44,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101396 states. [2021-11-20 23:39:48,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101396 to 101244. [2021-11-20 23:39:48,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101244 states, 61783 states have (on average 1.290452066102326) internal successors, (79728), 63002 states have internal predecessors, (79728), 31421 states have call successors, (31421), 8216 states have call predecessors, (31421), 8037 states have return successors, (32026), 30514 states have call predecessors, (32026), 31405 states have call successors, (32026) [2021-11-20 23:39:49,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101244 states to 101244 states and 143175 transitions. [2021-11-20 23:39:49,058 INFO L78 Accepts]: Start accepts. Automaton has 101244 states and 143175 transitions. Word has length 582 [2021-11-20 23:39:49,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:49,059 INFO L470 AbstractCegarLoop]: Abstraction has 101244 states and 143175 transitions. [2021-11-20 23:39:49,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2021-11-20 23:39:49,059 INFO L276 IsEmpty]: Start isEmpty. Operand 101244 states and 143175 transitions. [2021-11-20 23:39:49,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2021-11-20 23:39:49,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:49,080 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:49,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 23:39:49,080 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:39:49,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:49,081 INFO L85 PathProgramCache]: Analyzing trace with hash -58484651, now seen corresponding path program 1 times [2021-11-20 23:39:49,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:49,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353747460] [2021-11-20 23:39:49,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:49,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 9893 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9883 trivial. 0 not checked. [2021-11-20 23:39:50,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:50,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353747460] [2021-11-20 23:39:50,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353747460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:50,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:50,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:39:50,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972489834] [2021-11-20 23:39:50,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:50,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:39:50,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:50,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:39:50,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:39:50,301 INFO L87 Difference]: Start difference. First operand 101244 states and 143175 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63)