./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 71a59a3596571aa79fb44a527a9b6a33b40c9acdae164ed96a4388ebcdf2e0df --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:15:13,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:15:13,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:15:13,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:15:13,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:15:13,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:15:13,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:15:13,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:15:13,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:15:13,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:15:13,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:15:13,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:15:13,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:15:13,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:15:13,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:15:13,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:15:13,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:15:13,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:15:13,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:15:13,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:15:13,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:15:13,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:15:13,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:15:13,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:15:13,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:15:13,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:15:13,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:15:13,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:15:13,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:15:13,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:15:13,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:15:13,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:15:13,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:15:13,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:15:13,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:15:13,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:15:13,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:15:13,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:15:13,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:15:13,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:15:13,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:15:13,782 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:15:13,805 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:15:13,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:15:13,806 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:15:13,806 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:15:13,807 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:15:13,807 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:15:13,807 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:15:13,808 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:15:13,808 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:15:13,808 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:15:13,809 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:15:13,809 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:15:13,809 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:15:13,809 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:15:13,810 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:15:13,810 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:15:13,810 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:15:13,811 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:15:13,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:15:13,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:15:13,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:15:13,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:15:13,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:15:13,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:15:13,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:15:13,813 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:15:13,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:15:13,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:15:13,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:15:13,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:15:13,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:15:13,815 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:15:13,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:15:13,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:15:13,816 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:15:13,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:15:13,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:15:13,816 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:15:13,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71a59a3596571aa79fb44a527a9b6a33b40c9acdae164ed96a4388ebcdf2e0df [2022-11-22 01:15:14,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:15:14,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:15:14,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:15:14,125 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:15:14,125 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:15:14,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2022-11-22 01:15:17,260 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:15:17,822 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:15:17,823 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2022-11-22 01:15:17,873 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/bin/utaipan-g80aRyZoba/data/221cc7c20/5b9c5a5bac82419994ea701821ddb242/FLAG0045f5cb1 [2022-11-22 01:15:17,895 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/bin/utaipan-g80aRyZoba/data/221cc7c20/5b9c5a5bac82419994ea701821ddb242 [2022-11-22 01:15:17,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:15:17,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:15:17,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:15:17,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:15:17,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:15:17,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:15:17" (1/1) ... [2022-11-22 01:15:17,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1472b6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:15:17, skipping insertion in model container [2022-11-22 01:15:17,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:15:17" (1/1) ... [2022-11-22 01:15:17,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:15:18,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:15:20,401 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311030,311043] [2022-11-22 01:15:20,408 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311196,311209] [2022-11-22 01:15:20,410 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311360,311373] [2022-11-22 01:15:20,411 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311525,311538] [2022-11-22 01:15:20,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:15:20,475 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:15:20,875 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311030,311043] [2022-11-22 01:15:20,879 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311196,311209] [2022-11-22 01:15:20,880 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311360,311373] [2022-11-22 01:15:20,880 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311525,311538] [2022-11-22 01:15:20,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:15:20,964 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:15:20,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:15:20 WrapperNode [2022-11-22 01:15:20,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:15:20,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:15:20,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:15:20,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:15:20,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:15:20" (1/1) ... [2022-11-22 01:15:21,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:15:20" (1/1) ... [2022-11-22 01:15:21,207 INFO L138 Inliner]: procedures = 289, calls = 1042, calls flagged for inlining = 163, calls inlined = 153, statements flattened = 3400 [2022-11-22 01:15:21,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:15:21,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:15:21,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:15:21,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:15:21,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:15:20" (1/1) ... [2022-11-22 01:15:21,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:15:20" (1/1) ... [2022-11-22 01:15:21,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:15:20" (1/1) ... [2022-11-22 01:15:21,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:15:20" (1/1) ... [2022-11-22 01:15:21,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:15:20" (1/1) ... [2022-11-22 01:15:21,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:15:20" (1/1) ... [2022-11-22 01:15:21,459 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:15:20" (1/1) ... [2022-11-22 01:15:21,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:15:20" (1/1) ... [2022-11-22 01:15:21,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:15:21,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:15:21,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:15:21,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:15:21,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:15:20" (1/1) ... [2022-11-22 01:15:21,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:15:21,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:15:21,547 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:15:21,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d126fd19-770a-4754-a81b-1cc8e6f703c6/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:15:21,599 INFO L130 BoogieDeclarations]: Found specification of procedure show_enabled [2022-11-22 01:15:21,599 INFO L138 BoogieDeclarations]: Found implementation of procedure show_enabled [2022-11-22 01:15:21,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdevice_notifier [2022-11-22 01:15:21,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdevice_notifier [2022-11-22 01:15:21,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 01:15:21,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 01:15:21,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 01:15:21,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 01:15:21,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 01:15:21,601 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 01:15:21,601 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_mac [2022-11-22 01:15:21,601 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_mac [2022-11-22 01:15:21,601 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_put [2022-11-22 01:15:21,601 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_put [2022-11-22 01:15:21,601 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_ip [2022-11-22 01:15:21,602 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_ip [2022-11-22 01:15:21,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 01:15:21,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 01:15:21,602 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-22 01:15:21,603 INFO L130 BoogieDeclarations]: Found specification of procedure show_dev_name [2022-11-22 01:15:21,603 INFO L138 BoogieDeclarations]: Found implementation of procedure show_dev_name [2022-11-22 01:15:21,604 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdevice_notifier [2022-11-22 01:15:21,604 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdevice_notifier [2022-11-22 01:15:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure drop_netconsole_target [2022-11-22 01:15:21,605 INFO L138 BoogieDeclarations]: Found implementation of procedure drop_netconsole_target [2022-11-22 01:15:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure free_param_target [2022-11-22 01:15:21,605 INFO L138 BoogieDeclarations]: Found implementation of procedure free_param_target [2022-11-22 01:15:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 01:15:21,605 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 01:15:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_get [2022-11-22 01:15:21,606 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_get [2022-11-22 01:15:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_mac [2022-11-22 01:15:21,606 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_mac [2022-11-22 01:15:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_ip [2022-11-22 01:15:21,607 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_ip [2022-11-22 01:15:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-22 01:15:21,607 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-22 01:15:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-22 01:15:21,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-22 01:15:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_netconsole_target [2022-11-22 01:15:21,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_netconsole_target [2022-11-22 01:15:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:15:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:15:21,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 01:15:21,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 01:15:21,610 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 01:15:21,610 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 01:15:21,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 01:15:21,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 01:15:21,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-22 01:15:21,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-22 01:15:21,611 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-22 01:15:21,611 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-22 01:15:21,611 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_release [2022-11-22 01:15:21,611 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_release [2022-11-22 01:15:21,612 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_attr_show [2022-11-22 01:15:21,612 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_attr_show [2022-11-22 01:15:21,612 INFO L130 BoogieDeclarations]: Found specification of procedure make_netconsole_target [2022-11-22 01:15:21,612 INFO L138 BoogieDeclarations]: Found implementation of procedure make_netconsole_target [2022-11-22 01:15:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:15:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:15:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_cleanup [2022-11-22 01:15:21,613 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_cleanup [2022-11-22 01:15:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_setup [2022-11-22 01:15:21,614 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_setup [2022-11-22 01:15:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-22 01:15:21,614 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-22 01:15:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-22 01:15:21,615 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-22 01:15:21,616 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-22 01:15:21,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-22 01:15:21,616 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-22 01:15:21,616 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-22 01:15:21,616 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_port [2022-11-22 01:15:21,617 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_port [2022-11-22 01:15:21,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 01:15:21,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 01:15:21,618 INFO L130 BoogieDeclarations]: Found specification of procedure strnchr [2022-11-22 01:15:21,618 INFO L138 BoogieDeclarations]: Found implementation of procedure strnchr [2022-11-22 01:15:21,618 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtou16 [2022-11-22 01:15:21,618 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtou16 [2022-11-22 01:15:21,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 01:15:21,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-22 01:15:21,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-22 01:15:21,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 01:15:21,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 01:15:21,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 01:15:21,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:15:21,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-22 01:15:21,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-22 01:15:21,621 INFO L130 BoogieDeclarations]: Found specification of procedure store_enabled [2022-11-22 01:15:21,621 INFO L138 BoogieDeclarations]: Found implementation of procedure store_enabled [2022-11-22 01:15:21,621 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_ip [2022-11-22 01:15:21,622 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_ip [2022-11-22 01:15:21,622 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2022-11-22 01:15:21,622 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2022-11-22 01:15:21,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_cleanup_netconsole_14_2 [2022-11-22 01:15:21,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_cleanup_netconsole_14_2 [2022-11-22 01:15:21,623 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 01:15:21,623 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 01:15:21,623 INFO L130 BoogieDeclarations]: Found specification of procedure to_target [2022-11-22 01:15:21,623 INFO L138 BoogieDeclarations]: Found implementation of procedure to_target [2022-11-22 01:15:21,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-22 01:15:21,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-22 01:15:21,625 INFO L130 BoogieDeclarations]: Found specification of procedure config_item_put [2022-11-22 01:15:21,629 INFO L138 BoogieDeclarations]: Found implementation of procedure config_item_put [2022-11-22 01:15:21,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:15:21,630 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_mac [2022-11-22 01:15:21,630 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_mac [2022-11-22 01:15:21,630 INFO L130 BoogieDeclarations]: Found specification of procedure in6_pton [2022-11-22 01:15:21,630 INFO L138 BoogieDeclarations]: Found implementation of procedure in6_pton [2022-11-22 01:15:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:15:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 01:15:21,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 01:15:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:15:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 01:15:21,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 01:15:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:15:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-22 01:15:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure store_local_ip [2022-11-22 01:15:21,639 INFO L138 BoogieDeclarations]: Found implementation of procedure store_local_ip [2022-11-22 01:15:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure in_aton [2022-11-22 01:15:21,639 INFO L138 BoogieDeclarations]: Found implementation of procedure in_aton [2022-11-22 01:15:21,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 01:15:21,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 01:15:21,640 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-22 01:15:21,640 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-22 01:15:21,640 INFO L130 BoogieDeclarations]: Found specification of procedure store_dev_name [2022-11-22 01:15:21,640 INFO L138 BoogieDeclarations]: Found implementation of procedure store_dev_name [2022-11-22 01:15:21,640 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_port [2022-11-22 01:15:21,641 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_port [2022-11-22 01:15:21,641 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_attr_store [2022-11-22 01:15:21,641 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_attr_store [2022-11-22 01:15:21,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:15:21,641 INFO L130 BoogieDeclarations]: Found specification of procedure store_local_port [2022-11-22 01:15:21,641 INFO L138 BoogieDeclarations]: Found implementation of procedure store_local_port [2022-11-22 01:15:21,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 01:15:21,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 01:15:21,642 INFO L130 BoogieDeclarations]: Found specification of procedure config_item_name [2022-11-22 01:15:21,642 INFO L138 BoogieDeclarations]: Found implementation of procedure config_item_name [2022-11-22 01:15:21,642 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_port [2022-11-22 01:15:21,642 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_port [2022-11-22 01:15:21,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:15:21,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:15:22,532 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:15:22,536 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:15:22,712 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 01:15:25,586 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 01:15:25,694 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:15:26,226 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:15:26,226 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-22 01:15:26,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:15:26 BoogieIcfgContainer [2022-11-22 01:15:26,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:15:26,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:15:26,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:15:26,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:15:26,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:15:17" (1/3) ... [2022-11-22 01:15:26,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707f487c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:15:26, skipping insertion in model container [2022-11-22 01:15:26,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:15:20" (2/3) ... [2022-11-22 01:15:26,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707f487c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:15:26, skipping insertion in model container [2022-11-22 01:15:26,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:15:26" (3/3) ... [2022-11-22 01:15:26,273 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2022-11-22 01:15:26,297 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:15:26,298 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 01:15:26,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:15:26,420 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@942474b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:15:26,421 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 01:15:26,433 INFO L276 IsEmpty]: Start isEmpty. Operand has 1138 states, 681 states have (on average 1.3142437591776799) internal successors, (895), 690 states have internal predecessors, (895), 392 states have call successors, (392), 63 states have call predecessors, (392), 62 states have return successors, (387), 387 states have call predecessors, (387), 387 states have call successors, (387) [2022-11-22 01:15:26,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2022-11-22 01:15:26,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:15:26,507 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:15:26,508 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:15:26,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:15:26,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1891738426, now seen corresponding path program 1 times [2022-11-22 01:15:26,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:15:26,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402940200] [2022-11-22 01:15:26,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:15:26,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:15:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:15:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21756 trivial. 0 not checked. [2022-11-22 01:15:28,493 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:15:28,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402940200] [2022-11-22 01:15:28,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402940200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:15:28,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:15:28,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:15:28,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942847443] [2022-11-22 01:15:28,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:15:28,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:15:28,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:15:28,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:15:28,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:15:28,572 INFO L87 Difference]: Start difference. First operand has 1138 states, 681 states have (on average 1.3142437591776799) internal successors, (895), 690 states have internal predecessors, (895), 392 states have call successors, (392), 63 states have call predecessors, (392), 62 states have return successors, (387), 387 states have call predecessors, (387), 387 states have call successors, (387) Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2022-11-22 01:15:29,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:15:29,642 INFO L93 Difference]: Finished difference Result 2992 states and 4424 transitions. [2022-11-22 01:15:29,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:15:29,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) Word has length 761 [2022-11-22 01:15:29,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:15:29,683 INFO L225 Difference]: With dead ends: 2992 [2022-11-22 01:15:29,683 INFO L226 Difference]: Without dead ends: 1994 [2022-11-22 01:15:29,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:15:29,696 INFO L413 NwaCegarLoop]: 1770 mSDtfsCounter, 1366 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:15:29,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1366 Valid, 3167 Invalid, 348 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 01:15:29,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2022-11-22 01:15:29,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1990. [2022-11-22 01:15:29,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1990 states, 1217 states have (on average 1.3262119967132293) internal successors, (1614), 1233 states have internal predecessors, (1614), 651 states have call successors, (651), 120 states have call predecessors, (651), 119 states have return successors, (647), 647 states have call predecessors, (647), 647 states have call successors, (647) [2022-11-22 01:15:29,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 2912 transitions. [2022-11-22 01:15:29,912 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 2912 transitions. Word has length 761 [2022-11-22 01:15:29,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:15:29,915 INFO L495 AbstractCegarLoop]: Abstraction has 1990 states and 2912 transitions. [2022-11-22 01:15:29,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2022-11-22 01:15:29,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 2912 transitions. [2022-11-22 01:15:29,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2022-11-22 01:15:29,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:15:29,948 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:15:29,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:15:29,949 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:15:29,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:15:29,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1620204814, now seen corresponding path program 1 times [2022-11-22 01:15:29,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:15:29,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490748842] [2022-11-22 01:15:29,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:15:29,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:15:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:15:30,881 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-22 01:15:30,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:15:30,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490748842] [2022-11-22 01:15:30,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490748842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:15:30,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:15:30,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:15:30,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992904196] [2022-11-22 01:15:30,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:15:30,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:15:30,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:15:30,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:15:30,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:15:30,892 INFO L87 Difference]: Start difference. First operand 1990 states and 2912 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, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-22 01:15:31,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:15:31,815 INFO L93 Difference]: Finished difference Result 4794 states and 6960 transitions. [2022-11-22 01:15:31,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:15:31,816 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, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 788 [2022-11-22 01:15:31,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:15:31,846 INFO L225 Difference]: With dead ends: 4794 [2022-11-22 01:15:31,847 INFO L226 Difference]: Without dead ends: 2953 [2022-11-22 01:15:31,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:15:31,864 INFO L413 NwaCegarLoop]: 1781 mSDtfsCounter, 1344 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 3236 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:15:31,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 3236 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 01:15:31,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2022-11-22 01:15:32,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 2934. [2022-11-22 01:15:32,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2934 states, 1797 states have (on average 1.325542570951586) internal successors, (2382), 1824 states have internal predecessors, (2382), 932 states have call successors, (932), 203 states have call predecessors, (932), 202 states have return successors, (928), 923 states have call predecessors, (928), 928 states have call successors, (928) [2022-11-22 01:15:32,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 4242 transitions. [2022-11-22 01:15:32,094 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 4242 transitions. Word has length 788 [2022-11-22 01:15:32,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:15:32,097 INFO L495 AbstractCegarLoop]: Abstraction has 2934 states and 4242 transitions. [2022-11-22 01:15:32,098 INFO L496 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, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-22 01:15:32,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 4242 transitions. [2022-11-22 01:15:32,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2022-11-22 01:15:32,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:15:32,127 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:15:32,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:15:32,127 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:15:32,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:15:32,137 INFO L85 PathProgramCache]: Analyzing trace with hash 193227703, now seen corresponding path program 1 times [2022-11-22 01:15:32,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:15:32,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596537766] [2022-11-22 01:15:32,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:15:32,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:15:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:15:33,057 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-22 01:15:33,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:15:33,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596537766] [2022-11-22 01:15:33,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596537766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:15:33,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:15:33,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:15:33,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093475702] [2022-11-22 01:15:33,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:15:33,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:15:33,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:15:33,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:15:33,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:15:33,060 INFO L87 Difference]: Start difference. First operand 2934 states and 4242 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-22 01:15:34,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:15:34,150 INFO L93 Difference]: Finished difference Result 7626 states and 10955 transitions. [2022-11-22 01:15:34,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:15:34,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 790 [2022-11-22 01:15:34,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:15:34,187 INFO L225 Difference]: With dead ends: 7626 [2022-11-22 01:15:34,187 INFO L226 Difference]: Without dead ends: 4841 [2022-11-22 01:15:34,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:15:34,202 INFO L413 NwaCegarLoop]: 1809 mSDtfsCounter, 1342 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 3264 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:15:34,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1342 Valid, 3264 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 01:15:34,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4841 states. [2022-11-22 01:15:34,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4841 to 4822. [2022-11-22 01:15:34,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4822 states, 2957 states have (on average 1.3249915454852892) internal successors, (3918), 3006 states have internal predecessors, (3918), 1494 states have call successors, (1494), 369 states have call predecessors, (1494), 368 states have return successors, (1490), 1475 states have call predecessors, (1490), 1490 states have call successors, (1490) [2022-11-22 01:15:34,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 6902 transitions. [2022-11-22 01:15:34,634 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 6902 transitions. Word has length 790 [2022-11-22 01:15:34,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:15:34,636 INFO L495 AbstractCegarLoop]: Abstraction has 4822 states and 6902 transitions. [2022-11-22 01:15:34,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-22 01:15:34,636 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 6902 transitions. [2022-11-22 01:15:34,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2022-11-22 01:15:34,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:15:34,665 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:15:34,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:15:34,666 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:15:34,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:15:34,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1475445038, now seen corresponding path program 1 times [2022-11-22 01:15:34,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:15:34,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067839632] [2022-11-22 01:15:34,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:15:34,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:15:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:15:35,373 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-22 01:15:35,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:15:35,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067839632] [2022-11-22 01:15:35,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067839632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:15:35,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:15:35,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:15:35,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037251524] [2022-11-22 01:15:35,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:15:35,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:15:35,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:15:35,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:15:35,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:15:35,378 INFO L87 Difference]: Start difference. First operand 4822 states and 6902 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-22 01:15:36,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:15:36,560 INFO L93 Difference]: Finished difference Result 13246 states and 18871 transitions. [2022-11-22 01:15:36,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:15:36,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 789 [2022-11-22 01:15:36,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:15:36,612 INFO L225 Difference]: With dead ends: 13246 [2022-11-22 01:15:36,612 INFO L226 Difference]: Without dead ends: 8573 [2022-11-22 01:15:36,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:15:36,641 INFO L413 NwaCegarLoop]: 1857 mSDtfsCounter, 1343 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 3312 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:15:36,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1343 Valid, 3312 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 01:15:36,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8573 states. [2022-11-22 01:15:37,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8573 to 8554. [2022-11-22 01:15:37,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8554 states, 5252 states have (on average 1.324067022086824) internal successors, (6954), 5345 states have internal predecessors, (6954), 2599 states have call successors, (2599), 701 states have call predecessors, (2599), 700 states have return successors, (2595), 2560 states have call predecessors, (2595), 2595 states have call successors, (2595) [2022-11-22 01:15:37,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8554 states to 8554 states and 12148 transitions. [2022-11-22 01:15:37,443 INFO L78 Accepts]: Start accepts. Automaton has 8554 states and 12148 transitions. Word has length 789 [2022-11-22 01:15:37,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:15:37,445 INFO L495 AbstractCegarLoop]: Abstraction has 8554 states and 12148 transitions. [2022-11-22 01:15:37,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-22 01:15:37,447 INFO L276 IsEmpty]: Start isEmpty. Operand 8554 states and 12148 transitions. [2022-11-22 01:15:37,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2022-11-22 01:15:37,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:15:37,480 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:15:37,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:15:37,481 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:15:37,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:15:37,482 INFO L85 PathProgramCache]: Analyzing trace with hash 836507409, now seen corresponding path program 1 times [2022-11-22 01:15:37,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:15:37,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045845610] [2022-11-22 01:15:37,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:15:37,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:15:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:15:38,257 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-22 01:15:38,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:15:38,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045845610] [2022-11-22 01:15:38,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045845610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:15:38,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:15:38,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:15:38,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369037010] [2022-11-22 01:15:38,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:15:38,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:15:38,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:15:38,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:15:38,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:15:38,260 INFO L87 Difference]: Start difference. First operand 8554 states and 12148 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-22 01:15:39,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:15:39,675 INFO L93 Difference]: Finished difference Result 24310 states and 34407 transitions. [2022-11-22 01:15:39,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:15:39,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 791 [2022-11-22 01:15:39,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:15:39,807 INFO L225 Difference]: With dead ends: 24310 [2022-11-22 01:15:39,807 INFO L226 Difference]: Without dead ends: 15905 [2022-11-22 01:15:39,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:15:39,853 INFO L413 NwaCegarLoop]: 1925 mSDtfsCounter, 1341 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 3380 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:15:39,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1341 Valid, 3380 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 01:15:39,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15905 states. [2022-11-22 01:15:41,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15905 to 15886. [2022-11-22 01:15:41,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15886 states, 9767 states have (on average 1.3226169755298454) internal successors, (12918), 9948 states have internal predecessors, (12918), 4752 states have call successors, (4752), 1365 states have call predecessors, (4752), 1364 states have return successors, (4748), 4673 states have call predecessors, (4748), 4748 states have call successors, (4748) [2022-11-22 01:15:41,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15886 states to 15886 states and 22418 transitions. [2022-11-22 01:15:41,300 INFO L78 Accepts]: Start accepts. Automaton has 15886 states and 22418 transitions. Word has length 791 [2022-11-22 01:15:41,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:15:41,302 INFO L495 AbstractCegarLoop]: Abstraction has 15886 states and 22418 transitions. [2022-11-22 01:15:41,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-22 01:15:41,302 INFO L276 IsEmpty]: Start isEmpty. Operand 15886 states and 22418 transitions. [2022-11-22 01:15:41,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2022-11-22 01:15:41,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:15:41,320 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:15:41,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:15:41,321 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:15:41,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:15:41,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1707782092, now seen corresponding path program 1 times [2022-11-22 01:15:41,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:15:41,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141885688] [2022-11-22 01:15:41,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:15:41,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:15:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:15:42,121 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-22 01:15:42,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:15:42,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141885688] [2022-11-22 01:15:42,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141885688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:15:42,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:15:42,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:15:42,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735147463] [2022-11-22 01:15:42,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:15:42,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:15:42,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:15:42,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:15:42,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:15:42,125 INFO L87 Difference]: Start difference. First operand 15886 states and 22418 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-22 01:15:44,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:15:44,440 INFO L93 Difference]: Finished difference Result 45998 states and 64739 transitions. [2022-11-22 01:15:44,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:15:44,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 792 [2022-11-22 01:15:44,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:15:44,614 INFO L225 Difference]: With dead ends: 45998 [2022-11-22 01:15:44,615 INFO L226 Difference]: Without dead ends: 30261 [2022-11-22 01:15:44,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:15:44,690 INFO L413 NwaCegarLoop]: 1973 mSDtfsCounter, 1340 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 3428 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:15:44,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1340 Valid, 3428 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 01:15:44,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30261 states. [2022-11-22 01:15:47,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30261 to 30242. [2022-11-22 01:15:47,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30242 states, 18622 states have (on average 1.3206959510256686) internal successors, (24594), 18979 states have internal predecessors, (24594), 8925 states have call successors, (8925), 2693 states have call predecessors, (8925), 2692 states have return successors, (8921), 8766 states have call predecessors, (8921), 8921 states have call successors, (8921) [2022-11-22 01:15:47,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30242 states to 30242 states and 42440 transitions. [2022-11-22 01:15:47,304 INFO L78 Accepts]: Start accepts. Automaton has 30242 states and 42440 transitions. Word has length 792 [2022-11-22 01:15:47,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:15:47,309 INFO L495 AbstractCegarLoop]: Abstraction has 30242 states and 42440 transitions. [2022-11-22 01:15:47,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-22 01:15:47,309 INFO L276 IsEmpty]: Start isEmpty. Operand 30242 states and 42440 transitions. [2022-11-22 01:15:47,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2022-11-22 01:15:47,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:15:47,319 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:15:47,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:15:47,320 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:15:47,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:15:47,321 INFO L85 PathProgramCache]: Analyzing trace with hash -855437274, now seen corresponding path program 1 times [2022-11-22 01:15:47,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:15:47,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741437681] [2022-11-22 01:15:47,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:15:47,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:15:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:15:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-22 01:15:48,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:15:48,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741437681] [2022-11-22 01:15:48,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741437681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:15:48,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:15:48,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:15:48,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984599536] [2022-11-22 01:15:48,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:15:48,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:15:48,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:15:48,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:15:48,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:15:48,279 INFO L87 Difference]: Start difference. First operand 30242 states and 42440 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-22 01:15:51,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:15:51,343 INFO L93 Difference]: Finished difference Result 88406 states and 123775 transitions. [2022-11-22 01:15:51,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:15:51,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 794 [2022-11-22 01:15:51,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:15:51,734 INFO L225 Difference]: With dead ends: 88406 [2022-11-22 01:15:51,734 INFO L226 Difference]: Without dead ends: 58313 [2022-11-22 01:15:51,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:15:51,871 INFO L413 NwaCegarLoop]: 2021 mSDtfsCounter, 1338 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:15:51,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1338 Valid, 3476 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 01:15:51,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58313 states. [2022-11-22 01:15:55,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58313 to 58294. [2022-11-22 01:15:55,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58294 states, 35957 states have (on average 1.3184080985621716) internal successors, (47406), 36666 states have internal predecessors, (47406), 16986 states have call successors, (16986), 5349 states have call predecessors, (16986), 5348 states have return successors, (16982), 16667 states have call predecessors, (16982), 16982 states have call successors, (16982) [2022-11-22 01:15:56,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58294 states to 58294 states and 81374 transitions. [2022-11-22 01:15:56,427 INFO L78 Accepts]: Start accepts. Automaton has 58294 states and 81374 transitions. Word has length 794 [2022-11-22 01:15:56,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:15:56,428 INFO L495 AbstractCegarLoop]: Abstraction has 58294 states and 81374 transitions. [2022-11-22 01:15:56,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-22 01:15:56,429 INFO L276 IsEmpty]: Start isEmpty. Operand 58294 states and 81374 transitions. [2022-11-22 01:15:56,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2022-11-22 01:15:56,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:15:56,439 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:15:56,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:15:56,439 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:15:56,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:15:56,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1812496158, now seen corresponding path program 1 times [2022-11-22 01:15:56,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:15:56,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772413608] [2022-11-22 01:15:56,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:15:56,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:15:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:15:56,968 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-22 01:15:56,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:15:56,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772413608] [2022-11-22 01:15:56,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772413608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:15:56,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:15:56,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:15:56,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969425399] [2022-11-22 01:15:56,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:15:56,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:15:56,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:15:56,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:15:56,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:15:56,972 INFO L87 Difference]: Start difference. First operand 58294 states and 81374 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-22 01:16:02,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:16:02,531 INFO L93 Difference]: Finished difference Result 171198 states and 238443 transitions. [2022-11-22 01:16:02,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:16:02,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 793 [2022-11-22 01:16:02,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:16:03,261 INFO L225 Difference]: With dead ends: 171198 [2022-11-22 01:16:03,261 INFO L226 Difference]: Without dead ends: 113053 [2022-11-22 01:16:03,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:16:03,486 INFO L413 NwaCegarLoop]: 2069 mSDtfsCounter, 1339 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 3524 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:16:03,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 3524 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 01:16:03,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113053 states. [2022-11-22 01:16:09,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113053 to 113034. [2022-11-22 01:16:09,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113034 states, 69852 states have (on average 1.3158392028861021) internal successors, (91914), 71265 states have internal predecessors, (91914), 32519 states have call successors, (32519), 10661 states have call predecessors, (32519), 10660 states have return successors, (32515), 31880 states have call predecessors, (32515), 32515 states have call successors, (32515) [2022-11-22 01:16:10,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113034 states to 113034 states and 156948 transitions. [2022-11-22 01:16:10,969 INFO L78 Accepts]: Start accepts. Automaton has 113034 states and 156948 transitions. Word has length 793 [2022-11-22 01:16:10,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:16:10,970 INFO L495 AbstractCegarLoop]: Abstraction has 113034 states and 156948 transitions. [2022-11-22 01:16:10,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-22 01:16:10,971 INFO L276 IsEmpty]: Start isEmpty. Operand 113034 states and 156948 transitions. [2022-11-22 01:16:10,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2022-11-22 01:16:10,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:16:10,995 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:16:10,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:16:10,996 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:16:10,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:16:10,997 INFO L85 PathProgramCache]: Analyzing trace with hash -211173557, now seen corresponding path program 1 times [2022-11-22 01:16:10,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:16:10,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533086737] [2022-11-22 01:16:10,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:16:10,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:16:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:16:11,589 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-22 01:16:11,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:16:11,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533086737] [2022-11-22 01:16:11,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533086737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:16:11,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:16:11,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:16:11,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388875836] [2022-11-22 01:16:11,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:16:11,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:16:11,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:16:11,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:16:11,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:16:11,594 INFO L87 Difference]: Start difference. First operand 113034 states and 156948 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81)