./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-ethernet-via-via-rhine.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/bin/utaipan-EQgc7hIp5V --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 c5b0d1bb6abf00f856e27261b150a3be237701039761971659caf0639a1797fb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:30:55,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:30:55,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:30:55,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:30:55,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:30:55,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:30:55,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:30:55,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:30:55,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:30:55,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:30:55,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:30:55,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:30:55,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:30:55,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:30:55,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:30:55,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:30:55,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:30:55,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:30:55,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:30:55,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:30:55,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:30:55,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:30:55,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:30:55,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:30:55,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:30:55,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:30:55,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:30:55,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:30:55,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:30:55,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:30:55,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:30:55,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:30:55,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:30:55,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:30:55,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:30:55,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:30:55,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:30:55,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:30:55,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:30:55,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:30:55,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:30:55,959 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:30:56,009 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:30:56,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:30:56,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:30:56,011 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:30:56,019 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:30:56,019 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:30:56,020 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:30:56,020 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:30:56,020 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:30:56,020 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:30:56,022 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:30:56,022 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:30:56,022 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:30:56,023 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:30:56,023 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:30:56,023 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:30:56,023 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:30:56,024 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:30:56,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:30:56,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:30:56,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:30:56,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:30:56,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:30:56,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:30:56,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:30:56,027 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:30:56,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:30:56,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:30:56,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:30:56,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:30:56,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:30:56,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:30:56,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:30:56,031 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:30:56,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:30:56,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:30:56,032 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:30:56,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:30:56,032 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5b0d1bb6abf00f856e27261b150a3be237701039761971659caf0639a1797fb [2021-11-23 02:30:56,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:30:56,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:30:56,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:30:56,468 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:30:56,469 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:30:56,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i [2021-11-23 02:30:56,561 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/bin/utaipan-EQgc7hIp5V/data/16d5cd41a/5b20185b8b41469295debe851340b5bd/FLAGd4ca8c68f [2021-11-23 02:30:57,681 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:30:57,683 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i [2021-11-23 02:30:57,761 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/bin/utaipan-EQgc7hIp5V/data/16d5cd41a/5b20185b8b41469295debe851340b5bd/FLAGd4ca8c68f [2021-11-23 02:30:57,993 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/bin/utaipan-EQgc7hIp5V/data/16d5cd41a/5b20185b8b41469295debe851340b5bd [2021-11-23 02:30:57,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:30:57,997 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:30:57,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:30:58,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:30:58,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:30:58,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:30:57" (1/1) ... [2021-11-23 02:30:58,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eeb1a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:58, skipping insertion in model container [2021-11-23 02:30:58,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:30:57" (1/1) ... [2021-11-23 02:30:58,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:30:58,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:31:02,151 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[380944,380957] [2021-11-23 02:31:02,155 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381110,381123] [2021-11-23 02:31:02,156 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381274,381287] [2021-11-23 02:31:02,157 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381439,381452] [2021-11-23 02:31:02,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:31:02,345 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:31:02,866 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[380944,380957] [2021-11-23 02:31:02,866 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381110,381123] [2021-11-23 02:31:02,867 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381274,381287] [2021-11-23 02:31:02,868 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381439,381452] [2021-11-23 02:31:02,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:31:03,245 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:31:03,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:03 WrapperNode [2021-11-23 02:31:03,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:31:03,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:31:03,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:31:03,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:31:03,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:03" (1/1) ... [2021-11-23 02:31:03,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:03" (1/1) ... [2021-11-23 02:31:03,688 INFO L137 Inliner]: procedures = 490, calls = 2655, calls flagged for inlining = 292, calls inlined = 259, statements flattened = 5839 [2021-11-23 02:31:03,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:31:03,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:31:03,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:31:03,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:31:03,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:03" (1/1) ... [2021-11-23 02:31:03,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:03" (1/1) ... [2021-11-23 02:31:03,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:03" (1/1) ... [2021-11-23 02:31:03,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:03" (1/1) ... [2021-11-23 02:31:03,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:03" (1/1) ... [2021-11-23 02:31:03,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:03" (1/1) ... [2021-11-23 02:31:04,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:03" (1/1) ... [2021-11-23 02:31:04,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:31:04,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:31:04,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:31:04,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:31:04,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:03" (1/1) ... [2021-11-23 02:31:04,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:31:04,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:31:04,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:31:04,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5343ed26-7367-40bb-acbe-cc42dd538128/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:31:04,153 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-23 02:31:04,153 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-23 02:31:04,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:31:04,154 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:31:04,154 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-23 02:31:04,154 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-23 02:31:04,154 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-23 02:31:04,154 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-23 02:31:04,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:31:04,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:31:04,155 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 02:31:04,155 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 02:31:04,156 INFO L130 BoogieDeclarations]: Found specification of procedure free_tbufs [2021-11-23 02:31:04,156 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tbufs [2021-11-23 02:31:04,156 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-23 02:31:04,156 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-23 02:31:04,156 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-23 02:31:04,157 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-23 02:31:04,157 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-23 02:31:04,157 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-23 02:31:04,157 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-23 02:31:04,157 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-23 02:31:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-23 02:31:04,158 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-23 02:31:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_poll [2021-11-23 02:31:04,159 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_poll [2021-11-23 02:31:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-23 02:31:04,159 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-23 02:31:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-23 02:31:04,160 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-23 02:31:04,160 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_low [2021-11-23 02:31:04,160 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_low [2021-11-23 02:31:04,160 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-23 02:31:04,160 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-23 02:31:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 02:31:04,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 02:31:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-23 02:31:04,161 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-23 02:31:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-23 02:31:04,162 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-23 02:31:04,162 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-23 02:31:04,163 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-23 02:31:04,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 02:31:04,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 02:31:04,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-23 02:31:04,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-23 02:31:04,166 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-23 02:31:04,166 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-23 02:31:04,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:31:04,166 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-23 02:31:04,166 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-23 02:31:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit [2021-11-23 02:31:04,167 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit [2021-11-23 02:31:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 02:31:04,168 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 02:31:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 02:31:04,169 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 02:31:04,169 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-23 02:31:04,169 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-23 02:31:04,169 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_rbufs [2021-11-23 02:31:04,170 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_rbufs [2021-11-23 02:31:04,170 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 02:31:04,170 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 02:31:04,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:31:04,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 02:31:04,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 02:31:04,171 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_interrupt [2021-11-23 02:31:04,172 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_interrupt [2021-11-23 02:31:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:31:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-23 02:31:04,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-23 02:31:04,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-23 02:31:04,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-23 02:31:04,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 02:31:04,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 02:31:04,173 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_disable [2021-11-23 02:31:04,174 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_disable [2021-11-23 02:31:04,175 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2021-11-23 02:31:04,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2021-11-23 02:31:04,175 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-23 02:31:04,175 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-23 02:31:04,175 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-23 02:31:04,176 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-23 02:31:04,177 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_carrier [2021-11-23 02:31:04,177 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_carrier [2021-11-23 02:31:04,177 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_shutdown [2021-11-23 02:31:04,177 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_shutdown [2021-11-23 02:31:04,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:31:04,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-23 02:31:04,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-23 02:31:04,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-23 02:31:04,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-23 02:31:04,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-23 02:31:04,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-23 02:31:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-23 02:31:04,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-23 02:31:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:31:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2021-11-23 02:31:04,181 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2021-11-23 02:31:04,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 02:31:04,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 02:31:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 02:31:04,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 02:31:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:31:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:31:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-23 02:31:04,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-23 02:31:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:31:04,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:31:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-23 02:31:04,188 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-23 02:31:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_rx_mode [2021-11-23 02:31:04,190 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_rx_mode [2021-11-23 02:31:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:31:04,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:31:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_rx_crc_and_missed_errord [2021-11-23 02:31:04,194 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_rx_crc_and_missed_errord [2021-11-23 02:31:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-23 02:31:04,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-23 02:31:04,195 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-23 02:31:04,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-23 02:31:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-23 02:31:04,198 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-23 02:31:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:31:04,198 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:31:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-23 02:31:04,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-23 02:31:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2021-11-23 02:31:04,199 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2021-11-23 02:31:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 02:31:04,199 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 02:31:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_power_init [2021-11-23 02:31:04,200 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_power_init [2021-11-23 02:31:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_tx_timeout [2021-11-23 02:31:04,201 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_tx_timeout [2021-11-23 02:31:04,201 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-23 02:31:04,201 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-23 02:31:04,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:31:04,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:31:04,202 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-23 02:31:04,202 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-23 02:31:04,202 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-23 02:31:04,202 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-23 02:31:04,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:31:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:31:04,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:31:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-23 02:31:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_chip_reset [2021-11-23 02:31:04,203 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_chip_reset [2021-11-23 02:31:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-23 02:31:04,204 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-23 02:31:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:31:04,204 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:31:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_cam_mask [2021-11-23 02:31:04,204 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_cam_mask [2021-11-23 02:31:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure init_registers [2021-11-23 02:31:04,205 INFO L138 BoogieDeclarations]: Found implementation of procedure init_registers [2021-11-23 02:31:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-23 02:31:04,205 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-23 02:31:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_remove_one [2021-11-23 02:31:04,205 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_remove_one [2021-11-23 02:31:04,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-23 02:31:04,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-23 02:31:04,206 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-23 02:31:04,206 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-23 02:31:04,206 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_close [2021-11-23 02:31:04,207 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_close [2021-11-23 02:31:04,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_task_lock_of_rhine_private [2021-11-23 02:31:04,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_task_lock_of_rhine_private [2021-11-23 02:31:04,207 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-23 02:31:04,207 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-23 02:31:04,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:31:04,208 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 02:31:04,208 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 02:31:04,208 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-23 02:31:04,208 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-23 02:31:04,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:31:04,209 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_check_media [2021-11-23 02:31:04,209 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_check_media [2021-11-23 02:31:04,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2021-11-23 02:31:04,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2021-11-23 02:31:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:31:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure free_rbufs [2021-11-23 02:31:04,212 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rbufs [2021-11-23 02:31:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_get_events [2021-11-23 02:31:04,212 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_get_events [2021-11-23 02:31:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-23 02:31:04,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-23 02:31:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-23 02:31:04,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-23 02:31:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure enable_mmio [2021-11-23 02:31:04,214 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_mmio [2021-11-23 02:31:04,214 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_vlan_cam_mask [2021-11-23 02:31:04,214 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_vlan_cam_mask [2021-11-23 02:31:04,214 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-23 02:31:04,214 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-23 02:31:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 02:31:04,215 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 02:31:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-23 02:31:04,215 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-23 02:31:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 02:31:04,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 02:31:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-23 02:31:04,216 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-23 02:31:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-23 02:31:04,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-23 02:31:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-23 02:31:04,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-23 02:31:04,217 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-23 02:31:04,217 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-23 02:31:04,217 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-23 02:31:04,217 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-23 02:31:04,217 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_disable_linkmon [2021-11-23 02:31:04,218 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_disable_linkmon [2021-11-23 02:31:04,218 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_ack_events [2021-11-23 02:31:04,218 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_ack_events [2021-11-23 02:31:04,218 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-23 02:31:04,218 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-23 02:31:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_resume [2021-11-23 02:31:04,219 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_resume [2021-11-23 02:31:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-23 02:31:04,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-23 02:31:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:31:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-23 02:31:04,220 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-23 02:31:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:31:04,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:31:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2021-11-23 02:31:04,220 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2021-11-23 02:31:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-23 02:31:04,221 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-23 02:31:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_task_lock_of_rhine_private [2021-11-23 02:31:04,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_task_lock_of_rhine_private [2021-11-23 02:31:04,227 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_high [2021-11-23 02:31:04,227 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_high [2021-11-23 02:31:04,228 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_irq_disable [2021-11-23 02:31:04,228 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_irq_disable [2021-11-23 02:31:04,228 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_enable [2021-11-23 02:31:04,228 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_enable [2021-11-23 02:31:04,228 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_tbufs [2021-11-23 02:31:04,229 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_tbufs [2021-11-23 02:31:04,229 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-23 02:31:04,229 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-23 02:31:04,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 02:31:04,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 02:31:04,232 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-23 02:31:04,233 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-23 02:31:04,233 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-23 02:31:04,233 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-23 02:31:04,233 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_enable_linkmon [2021-11-23 02:31:04,233 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_enable_linkmon [2021-11-23 02:31:04,234 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_vcam [2021-11-23 02:31:04,234 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_vcam [2021-11-23 02:31:04,234 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 02:31:04,234 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 02:31:04,234 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-23 02:31:04,234 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-23 02:31:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:31:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_suspend [2021-11-23 02:31:04,235 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_suspend [2021-11-23 02:31:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_open [2021-11-23 02:31:04,235 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_open [2021-11-23 02:31:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 02:31:04,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 02:31:05,306 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:31:05,310 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:31:05,534 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:41:24,426 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 02:41:24,550 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:41:31,296 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:41:31,296 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-23 02:41:31,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:41:31 BoogieIcfgContainer [2021-11-23 02:41:31,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:41:31,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:41:31,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:41:31,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:41:31,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:30:57" (1/3) ... [2021-11-23 02:41:31,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251f8071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:41:31, skipping insertion in model container [2021-11-23 02:41:31,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:03" (2/3) ... [2021-11-23 02:41:31,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251f8071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:41:31, skipping insertion in model container [2021-11-23 02:41:31,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:41:31" (3/3) ... [2021-11-23 02:41:31,315 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i [2021-11-23 02:41:31,322 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:41:31,322 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-23 02:41:31,428 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:41:31,450 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:41:31,452 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-23 02:41:31,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 1653 states, 946 states have (on average 1.3128964059196617) internal successors, (1242), 995 states have internal predecessors, (1242), 582 states have call successors, (582), 124 states have call predecessors, (582), 123 states have return successors, (573), 560 states have call predecessors, (573), 573 states have call successors, (573) [2021-11-23 02:41:31,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-23 02:41:31,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:31,581 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 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] [2021-11-23 02:41:31,582 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:41:31,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:31,589 INFO L85 PathProgramCache]: Analyzing trace with hash -191944831, now seen corresponding path program 1 times [2021-11-23 02:41:31,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:31,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109868352] [2021-11-23 02:41:31,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:31,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2021-11-23 02:41:33,575 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:33,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109868352] [2021-11-23 02:41:33,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109868352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:33,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:33,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:41:33,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700460156] [2021-11-23 02:41:33,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:33,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:41:33,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:33,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:41:33,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:41:33,640 INFO L87 Difference]: Start difference. First operand has 1653 states, 946 states have (on average 1.3128964059196617) internal successors, (1242), 995 states have internal predecessors, (1242), 582 states have call successors, (582), 124 states have call predecessors, (582), 123 states have return successors, (573), 560 states have call predecessors, (573), 573 states have call successors, (573) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-23 02:41:35,882 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:41:42,685 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:41:42,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:42,841 INFO L93 Difference]: Finished difference Result 4816 states and 7130 transitions. [2021-11-23 02:41:42,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:41:42,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 165 [2021-11-23 02:41:42,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:42,907 INFO L225 Difference]: With dead ends: 4816 [2021-11-23 02:41:42,907 INFO L226 Difference]: Without dead ends: 3179 [2021-11-23 02:41:42,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:41:42,934 INFO L933 BasicCegarLoop]: 2570 mSDtfsCounter, 2268 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2268 SdHoareTripleChecker+Valid, 4566 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:42,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2268 Valid, 4566 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 716 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2021-11-23 02:41:42,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2021-11-23 02:41:43,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 3175. [2021-11-23 02:41:43,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3175 states, 1826 states have (on average 1.3061336254107339) internal successors, (2385), 1921 states have internal predecessors, (2385), 1104 states have call successors, (1104), 243 states have call predecessors, (1104), 242 states have return successors, (1100), 1074 states have call predecessors, (1100), 1100 states have call successors, (1100) [2021-11-23 02:41:43,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3175 states to 3175 states and 4589 transitions. [2021-11-23 02:41:43,420 INFO L78 Accepts]: Start accepts. Automaton has 3175 states and 4589 transitions. Word has length 165 [2021-11-23 02:41:43,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:43,425 INFO L470 AbstractCegarLoop]: Abstraction has 3175 states and 4589 transitions. [2021-11-23 02:41:43,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-23 02:41:43,427 INFO L276 IsEmpty]: Start isEmpty. Operand 3175 states and 4589 transitions. [2021-11-23 02:41:43,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-23 02:41:43,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:43,449 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:43,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:41:43,450 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:41:43,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:43,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1365411271, now seen corresponding path program 1 times [2021-11-23 02:41:43,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:43,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363445388] [2021-11-23 02:41:43,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:43,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2021-11-23 02:41:44,696 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:44,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363445388] [2021-11-23 02:41:44,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363445388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:44,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:44,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:41:44,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17612864] [2021-11-23 02:41:44,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:44,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:41:44,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:44,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:41:44,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:41:44,701 INFO L87 Difference]: Start difference. First operand 3175 states and 4589 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 02:41:46,869 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:41:53,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:53,434 INFO L93 Difference]: Finished difference Result 9107 states and 13133 transitions. [2021-11-23 02:41:53,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:41:53,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 165 [2021-11-23 02:41:53,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:53,506 INFO L225 Difference]: With dead ends: 9107 [2021-11-23 02:41:53,506 INFO L226 Difference]: Without dead ends: 5961 [2021-11-23 02:41:53,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:41:53,534 INFO L933 BasicCegarLoop]: 2539 mSDtfsCounter, 2001 mSDsluCounter, 2270 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2001 SdHoareTripleChecker+Valid, 4496 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:53,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2001 Valid, 4496 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 783 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-11-23 02:41:53,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5961 states. [2021-11-23 02:41:53,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5961 to 5940. [2021-11-23 02:41:53,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5940 states, 3403 states have (on average 1.2918013517484572) internal successors, (4396), 3577 states have internal predecessors, (4396), 2059 states have call successors, (2059), 476 states have call predecessors, (2059), 475 states have return successors, (2055), 2004 states have call predecessors, (2055), 2055 states have call successors, (2055) [2021-11-23 02:41:54,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 8510 transitions. [2021-11-23 02:41:54,019 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 8510 transitions. Word has length 165 [2021-11-23 02:41:54,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:54,022 INFO L470 AbstractCegarLoop]: Abstraction has 5940 states and 8510 transitions. [2021-11-23 02:41:54,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 02:41:54,023 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 8510 transitions. [2021-11-23 02:41:54,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-23 02:41:54,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:54,028 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:54,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:41:54,032 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:41:54,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:54,033 INFO L85 PathProgramCache]: Analyzing trace with hash 2131269995, now seen corresponding path program 1 times [2021-11-23 02:41:54,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:54,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326674561] [2021-11-23 02:41:54,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:54,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:54,952 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2021-11-23 02:41:54,953 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:54,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326674561] [2021-11-23 02:41:54,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326674561] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:54,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:54,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:41:54,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573448481] [2021-11-23 02:41:54,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:54,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:41:54,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:54,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:41:54,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:41:54,956 INFO L87 Difference]: Start difference. First operand 5940 states and 8510 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-23 02:41:57,125 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:42:04,657 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:42:04,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:04,757 INFO L93 Difference]: Finished difference Result 16690 states and 23800 transitions. [2021-11-23 02:42:04,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:42:04,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 166 [2021-11-23 02:42:04,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:04,886 INFO L225 Difference]: With dead ends: 16690 [2021-11-23 02:42:04,886 INFO L226 Difference]: Without dead ends: 10779 [2021-11-23 02:42:04,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:42:04,936 INFO L933 BasicCegarLoop]: 2481 mSDtfsCounter, 1915 mSDsluCounter, 2268 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 4441 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:04,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1915 Valid, 4441 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 730 Invalid, 2 Unknown, 0 Unchecked, 9.3s Time] [2021-11-23 02:42:04,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10779 states. [2021-11-23 02:42:05,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10779 to 10754. [2021-11-23 02:42:05,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10754 states, 6127 states have (on average 1.2808878733474784) internal successors, (7848), 6457 states have internal predecessors, (7848), 3721 states have call successors, (3721), 908 states have call predecessors, (3721), 903 states have return successors, (3719), 3604 states have call predecessors, (3719), 3717 states have call successors, (3719) [2021-11-23 02:42:05,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10754 states to 10754 states and 15288 transitions. [2021-11-23 02:42:05,962 INFO L78 Accepts]: Start accepts. Automaton has 10754 states and 15288 transitions. Word has length 166 [2021-11-23 02:42:05,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:05,964 INFO L470 AbstractCegarLoop]: Abstraction has 10754 states and 15288 transitions. [2021-11-23 02:42:05,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-23 02:42:05,965 INFO L276 IsEmpty]: Start isEmpty. Operand 10754 states and 15288 transitions. [2021-11-23 02:42:05,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-23 02:42:05,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:05,972 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:05,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:42:05,973 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:42:05,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:05,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1289738322, now seen corresponding path program 1 times [2021-11-23 02:42:05,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:05,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192313414] [2021-11-23 02:42:05,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:05,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:06,925 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2021-11-23 02:42:06,926 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:06,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192313414] [2021-11-23 02:42:06,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192313414] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:06,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:06,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:42:06,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467783150] [2021-11-23 02:42:06,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:06,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:42:06,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:06,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:42:06,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:42:06,928 INFO L87 Difference]: Start difference. First operand 10754 states and 15288 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-23 02:42:09,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:42:14,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:14,680 INFO L93 Difference]: Finished difference Result 22758 states and 32260 transitions. [2021-11-23 02:42:14,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:42:14,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 176 [2021-11-23 02:42:14,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:14,813 INFO L225 Difference]: With dead ends: 22758 [2021-11-23 02:42:14,813 INFO L226 Difference]: Without dead ends: 12033 [2021-11-23 02:42:14,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:42:14,885 INFO L933 BasicCegarLoop]: 2749 mSDtfsCounter, 1983 mSDsluCounter, 2305 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 4722 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:14,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1983 Valid, 4722 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 833 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2021-11-23 02:42:14,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12033 states. [2021-11-23 02:42:15,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12033 to 12010. [2021-11-23 02:42:15,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12010 states, 6863 states have (on average 1.2723298848899898) internal successors, (8732), 7232 states have internal predecessors, (8732), 4086 states have call successors, (4086), 1066 states have call predecessors, (4086), 1058 states have return successors, (4084), 3938 states have call predecessors, (4084), 4082 states have call successors, (4084) [2021-11-23 02:42:15,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12010 states to 12010 states and 16902 transitions. [2021-11-23 02:42:15,864 INFO L78 Accepts]: Start accepts. Automaton has 12010 states and 16902 transitions. Word has length 176 [2021-11-23 02:42:15,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:15,865 INFO L470 AbstractCegarLoop]: Abstraction has 12010 states and 16902 transitions. [2021-11-23 02:42:15,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-23 02:42:15,867 INFO L276 IsEmpty]: Start isEmpty. Operand 12010 states and 16902 transitions. [2021-11-23 02:42:15,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-23 02:42:15,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:15,873 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:15,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:42:15,874 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:42:15,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:15,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1253162523, now seen corresponding path program 1 times [2021-11-23 02:42:15,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:15,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054156839] [2021-11-23 02:42:15,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:15,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:16,691 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2021-11-23 02:42:16,691 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:16,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054156839] [2021-11-23 02:42:16,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054156839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:16,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:16,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:42:16,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23296034] [2021-11-23 02:42:16,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:16,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:42:16,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:16,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:42:16,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:42:16,694 INFO L87 Difference]: Start difference. First operand 12010 states and 16902 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-23 02:42:18,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:42:23,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:23,634 INFO L93 Difference]: Finished difference Result 33961 states and 47841 transitions. [2021-11-23 02:42:23,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:42:23,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 177 [2021-11-23 02:42:23,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:23,772 INFO L225 Difference]: With dead ends: 33961 [2021-11-23 02:42:23,773 INFO L226 Difference]: Without dead ends: 21980 [2021-11-23 02:42:23,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:42:23,850 INFO L933 BasicCegarLoop]: 2571 mSDtfsCounter, 2285 mSDsluCounter, 2342 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2285 SdHoareTripleChecker+Valid, 4573 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:23,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2285 Valid, 4573 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 704 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-11-23 02:42:23,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21980 states. [2021-11-23 02:42:25,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21980 to 21947. [2021-11-23 02:42:25,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21947 states, 12530 states have (on average 1.2725458898643256) internal successors, (15945), 13225 states have internal predecessors, (15945), 7482 states have call successors, (7482), 1947 states have call predecessors, (7482), 1932 states have return successors, (7482), 7191 states have call predecessors, (7482), 7478 states have call successors, (7482) [2021-11-23 02:42:25,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21947 states to 21947 states and 30909 transitions. [2021-11-23 02:42:25,653 INFO L78 Accepts]: Start accepts. Automaton has 21947 states and 30909 transitions. Word has length 177 [2021-11-23 02:42:25,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:25,655 INFO L470 AbstractCegarLoop]: Abstraction has 21947 states and 30909 transitions. [2021-11-23 02:42:25,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-23 02:42:25,655 INFO L276 IsEmpty]: Start isEmpty. Operand 21947 states and 30909 transitions. [2021-11-23 02:42:25,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-23 02:42:25,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:25,661 INFO L514 BasicCegarLoop]: trace histogram [16, 14, 14, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:25,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:42:25,661 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:42:25,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:25,662 INFO L85 PathProgramCache]: Analyzing trace with hash 221818770, now seen corresponding path program 1 times [2021-11-23 02:42:25,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:25,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317518151] [2021-11-23 02:42:25,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:25,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:26,412 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2021-11-23 02:42:26,413 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:26,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317518151] [2021-11-23 02:42:26,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317518151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:26,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:26,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:42:26,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565289322] [2021-11-23 02:42:26,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:26,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:42:26,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:26,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:42:26,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:42:26,415 INFO L87 Difference]: Start difference. First operand 21947 states and 30909 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-23 02:42:28,591 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:42:33,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:42:35,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:35,084 INFO L93 Difference]: Finished difference Result 60183 states and 84840 transitions. [2021-11-23 02:42:35,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:42:35,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 185 [2021-11-23 02:42:35,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:35,320 INFO L225 Difference]: With dead ends: 60183 [2021-11-23 02:42:35,321 INFO L226 Difference]: Without dead ends: 38265 [2021-11-23 02:42:35,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:42:35,631 INFO L933 BasicCegarLoop]: 2880 mSDtfsCounter, 2222 mSDsluCounter, 2320 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2222 SdHoareTripleChecker+Valid, 4865 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:35,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2222 Valid, 4865 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 809 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2021-11-23 02:42:35,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38265 states. [2021-11-23 02:42:37,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38265 to 38216. [2021-11-23 02:42:38,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38216 states, 21918 states have (on average 1.271055753262159) internal successors, (27859), 23171 states have internal predecessors, (27859), 12946 states have call successors, (12946), 3378 states have call predecessors, (12946), 3349 states have return successors, (12950), 12398 states have call predecessors, (12950), 12942 states have call successors, (12950) [2021-11-23 02:42:38,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38216 states to 38216 states and 53755 transitions. [2021-11-23 02:42:38,460 INFO L78 Accepts]: Start accepts. Automaton has 38216 states and 53755 transitions. Word has length 185 [2021-11-23 02:42:38,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:38,462 INFO L470 AbstractCegarLoop]: Abstraction has 38216 states and 53755 transitions. [2021-11-23 02:42:38,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-23 02:42:38,462 INFO L276 IsEmpty]: Start isEmpty. Operand 38216 states and 53755 transitions. [2021-11-23 02:42:38,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-23 02:42:38,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:38,470 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:38,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:42:38,470 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:42:38,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:38,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1351001441, now seen corresponding path program 1 times [2021-11-23 02:42:38,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:38,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777595602] [2021-11-23 02:42:38,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:38,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:39,728 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2021-11-23 02:42:39,728 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:39,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777595602] [2021-11-23 02:42:39,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777595602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:39,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:39,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:42:39,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619127279] [2021-11-23 02:42:39,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:39,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:42:39,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:39,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:42:39,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:39,732 INFO L87 Difference]: Start difference. First operand 38216 states and 53755 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-23 02:42:41,999 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:42:49,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:49,813 INFO L93 Difference]: Finished difference Result 38222 states and 53760 transitions. [2021-11-23 02:42:49,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:42:49,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 209 [2021-11-23 02:42:49,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:50,019 INFO L225 Difference]: With dead ends: 38222 [2021-11-23 02:42:50,020 INFO L226 Difference]: Without dead ends: 38220 [2021-11-23 02:42:50,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:42:50,041 INFO L933 BasicCegarLoop]: 2007 mSDtfsCounter, 2305 mSDsluCounter, 4701 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2308 SdHoareTripleChecker+Valid, 6016 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:50,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2308 Valid, 6016 Invalid, 1051 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1049 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2021-11-23 02:42:50,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38220 states. [2021-11-23 02:42:52,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38220 to 38220. [2021-11-23 02:42:52,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38220 states, 21921 states have (on average 1.271018657907942) internal successors, (27862), 23174 states have internal predecessors, (27862), 12946 states have call successors, (12946), 3379 states have call predecessors, (12946), 3350 states have return successors, (12950), 12398 states have call predecessors, (12950), 12942 states have call successors, (12950) [2021-11-23 02:42:52,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38220 states to 38220 states and 53758 transitions. [2021-11-23 02:42:52,897 INFO L78 Accepts]: Start accepts. Automaton has 38220 states and 53758 transitions. Word has length 209 [2021-11-23 02:42:52,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:52,898 INFO L470 AbstractCegarLoop]: Abstraction has 38220 states and 53758 transitions. [2021-11-23 02:42:52,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-23 02:42:52,899 INFO L276 IsEmpty]: Start isEmpty. Operand 38220 states and 53758 transitions. [2021-11-23 02:42:52,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-23 02:42:52,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:52,906 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:52,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:42:52,907 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:42:52,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:52,909 INFO L85 PathProgramCache]: Analyzing trace with hash -498710804, now seen corresponding path program 1 times [2021-11-23 02:42:52,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:52,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380955710] [2021-11-23 02:42:52,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:52,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 881 trivial. 0 not checked. [2021-11-23 02:42:53,885 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:53,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380955710] [2021-11-23 02:42:53,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380955710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:53,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:53,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:42:53,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470667677] [2021-11-23 02:42:53,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:53,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:42:53,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:53,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:42:53,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:53,888 INFO L87 Difference]: Start difference. First operand 38220 states and 53758 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-23 02:42:56,318 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:43:01,844 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:43:03,865 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:43:05,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:05,925 INFO L93 Difference]: Finished difference Result 38226 states and 53763 transitions. [2021-11-23 02:43:05,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:43:05,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 212 [2021-11-23 02:43:05,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:06,168 INFO L225 Difference]: With dead ends: 38226 [2021-11-23 02:43:06,169 INFO L226 Difference]: Without dead ends: 38224 [2021-11-23 02:43:06,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:43:06,196 INFO L933 BasicCegarLoop]: 2010 mSDtfsCounter, 2301 mSDsluCounter, 4701 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2303 SdHoareTripleChecker+Valid, 6019 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:06,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2303 Valid, 6019 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1048 Invalid, 2 Unknown, 0 Unchecked, 10.6s Time] [2021-11-23 02:43:06,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38224 states. [2021-11-23 02:43:08,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38224 to 38224. [2021-11-23 02:43:08,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38224 states, 21924 states have (on average 1.2709815727057105) internal successors, (27865), 23177 states have internal predecessors, (27865), 12946 states have call successors, (12946), 3380 states have call predecessors, (12946), 3351 states have return successors, (12950), 12398 states have call predecessors, (12950), 12942 states have call successors, (12950) [2021-11-23 02:43:08,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38224 states to 38224 states and 53761 transitions. [2021-11-23 02:43:08,553 INFO L78 Accepts]: Start accepts. Automaton has 38224 states and 53761 transitions. Word has length 212 [2021-11-23 02:43:08,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:08,554 INFO L470 AbstractCegarLoop]: Abstraction has 38224 states and 53761 transitions. [2021-11-23 02:43:08,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-23 02:43:08,554 INFO L276 IsEmpty]: Start isEmpty. Operand 38224 states and 53761 transitions. [2021-11-23 02:43:08,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-23 02:43:08,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:08,563 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:08,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:43:08,563 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:43:08,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:08,564 INFO L85 PathProgramCache]: Analyzing trace with hash 414839932, now seen corresponding path program 1 times [2021-11-23 02:43:08,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:08,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624772203] [2021-11-23 02:43:08,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:08,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:09,419 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2021-11-23 02:43:09,419 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:09,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624772203] [2021-11-23 02:43:09,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624772203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:09,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:09,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:43:09,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997745747] [2021-11-23 02:43:09,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:09,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:43:09,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:09,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:43:09,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:43:09,422 INFO L87 Difference]: Start difference. First operand 38224 states and 53761 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-23 02:43:11,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:43:16,968 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:43:20,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:20,301 INFO L93 Difference]: Finished difference Result 38230 states and 53766 transitions. [2021-11-23 02:43:20,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:43:20,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 218 [2021-11-23 02:43:20,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:20,553 INFO L225 Difference]: With dead ends: 38230 [2021-11-23 02:43:20,553 INFO L226 Difference]: Without dead ends: 38226 [2021-11-23 02:43:20,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:43:20,565 INFO L933 BasicCegarLoop]: 2010 mSDtfsCounter, 2300 mSDsluCounter, 4701 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 6019 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:20,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2301 Valid, 6019 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1049 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2021-11-23 02:43:20,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38226 states. [2021-11-23 02:43:22,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38226 to 38226. [2021-11-23 02:43:22,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38226 states, 21926 states have (on average 1.2709112469214632) internal successors, (27866), 23178 states have internal predecessors, (27866), 12946 states have call successors, (12946), 3381 states have call predecessors, (12946), 3351 states have return successors, (12950), 12398 states have call predecessors, (12950), 12942 states have call successors, (12950) [2021-11-23 02:43:22,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38226 states to 38226 states and 53762 transitions. [2021-11-23 02:43:22,375 INFO L78 Accepts]: Start accepts. Automaton has 38226 states and 53762 transitions. Word has length 218 [2021-11-23 02:43:22,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:22,376 INFO L470 AbstractCegarLoop]: Abstraction has 38226 states and 53762 transitions. [2021-11-23 02:43:22,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-23 02:43:22,376 INFO L276 IsEmpty]: Start isEmpty. Operand 38226 states and 53762 transitions. [2021-11-23 02:43:22,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-23 02:43:22,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:22,383 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:22,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:43:22,384 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:43:22,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:22,385 INFO L85 PathProgramCache]: Analyzing trace with hash 520786508, now seen corresponding path program 1 times [2021-11-23 02:43:22,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:22,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152802685] [2021-11-23 02:43:22,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:22,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:23,208 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2021-11-23 02:43:23,208 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:23,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152802685] [2021-11-23 02:43:23,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152802685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:23,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:23,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:43:23,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683399713] [2021-11-23 02:43:23,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:23,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:43:23,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:23,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:43:23,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:43:23,211 INFO L87 Difference]: Start difference. First operand 38226 states and 53762 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-23 02:43:25,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:43:32,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:32,988 INFO L93 Difference]: Finished difference Result 43742 states and 60759 transitions. [2021-11-23 02:43:32,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:43:32,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 222 [2021-11-23 02:43:32,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:33,220 INFO L225 Difference]: With dead ends: 43742 [2021-11-23 02:43:33,220 INFO L226 Difference]: Without dead ends: 43463 [2021-11-23 02:43:33,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:43:33,236 INFO L933 BasicCegarLoop]: 2222 mSDtfsCounter, 2162 mSDsluCounter, 5731 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 7143 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:33,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2162 Valid, 7143 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1186 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2021-11-23 02:43:33,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43463 states. [2021-11-23 02:43:35,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43463 to 43463. [2021-11-23 02:43:35,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43463 states, 24783 states have (on average 1.259613444699996) internal successors, (31217), 26138 states have internal predecessors, (31217), 14492 states have call successors, (14492), 4198 states have call predecessors, (14492), 4186 states have return successors, (14500), 13970 states have call predecessors, (14500), 14492 states have call successors, (14500) [2021-11-23 02:43:35,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43463 states to 43463 states and 60209 transitions. [2021-11-23 02:43:35,382 INFO L78 Accepts]: Start accepts. Automaton has 43463 states and 60209 transitions. Word has length 222 [2021-11-23 02:43:35,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:35,382 INFO L470 AbstractCegarLoop]: Abstraction has 43463 states and 60209 transitions. [2021-11-23 02:43:35,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-23 02:43:35,383 INFO L276 IsEmpty]: Start isEmpty. Operand 43463 states and 60209 transitions. [2021-11-23 02:43:35,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-23 02:43:35,389 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:35,390 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:35,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 02:43:35,390 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:43:35,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:35,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1061686274, now seen corresponding path program 1 times [2021-11-23 02:43:35,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:35,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577914502] [2021-11-23 02:43:35,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:35,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:36,116 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2021-11-23 02:43:36,116 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:36,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577914502] [2021-11-23 02:43:36,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577914502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:36,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:36,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:43:36,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112617673] [2021-11-23 02:43:36,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:36,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:43:36,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:36,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:43:36,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:43:36,119 INFO L87 Difference]: Start difference. First operand 43463 states and 60209 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-23 02:43:38,279 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:43:46,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:46,315 INFO L93 Difference]: Finished difference Result 106067 states and 146989 transitions. [2021-11-23 02:43:46,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:43:46,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 225 [2021-11-23 02:43:46,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:46,740 INFO L225 Difference]: With dead ends: 106067 [2021-11-23 02:43:46,741 INFO L226 Difference]: Without dead ends: 62775 [2021-11-23 02:43:46,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:43:46,875 INFO L933 BasicCegarLoop]: 2796 mSDtfsCounter, 1951 mSDsluCounter, 2270 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1951 SdHoareTripleChecker+Valid, 4735 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:46,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1951 Valid, 4735 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 854 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2021-11-23 02:43:46,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62775 states. [2021-11-23 02:43:50,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62775 to 62755. [2021-11-23 02:43:50,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62755 states, 35841 states have (on average 1.25822382187997) internal successors, (45096), 37794 states have internal predecessors, (45096), 20808 states have call successors, (20808), 6120 states have call predecessors, (20808), 6104 states have return successors, (20820), 20040 states have call predecessors, (20820), 20808 states have call successors, (20820) [2021-11-23 02:43:50,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62755 states to 62755 states and 86724 transitions. [2021-11-23 02:43:50,330 INFO L78 Accepts]: Start accepts. Automaton has 62755 states and 86724 transitions. Word has length 225 [2021-11-23 02:43:50,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:50,331 INFO L470 AbstractCegarLoop]: Abstraction has 62755 states and 86724 transitions. [2021-11-23 02:43:50,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-23 02:43:50,332 INFO L276 IsEmpty]: Start isEmpty. Operand 62755 states and 86724 transitions. [2021-11-23 02:43:50,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-23 02:43:50,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:50,341 INFO L514 BasicCegarLoop]: trace histogram [19, 14, 14, 14, 14, 14, 14, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:50,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 02:43:50,341 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:43:50,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:50,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1509852030, now seen corresponding path program 1 times [2021-11-23 02:43:50,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:50,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204149333] [2021-11-23 02:43:50,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:50,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:51,058 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2021-11-23 02:43:51,059 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:51,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204149333] [2021-11-23 02:43:51,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204149333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:51,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:51,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:43:51,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535996019] [2021-11-23 02:43:51,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:51,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:43:51,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:51,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:43:51,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:43:51,061 INFO L87 Difference]: Start difference. First operand 62755 states and 86724 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-23 02:43:53,220 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:44:00,657 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:44:03,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:44:06,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:44:06,687 INFO L93 Difference]: Finished difference Result 155459 states and 214908 transitions. [2021-11-23 02:44:06,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:44:06,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 237 [2021-11-23 02:44:06,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:44:07,117 INFO L225 Difference]: With dead ends: 155459 [2021-11-23 02:44:07,118 INFO L226 Difference]: Without dead ends: 92875 [2021-11-23 02:44:07,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:44:07,295 INFO L933 BasicCegarLoop]: 3901 mSDtfsCounter, 2253 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2253 SdHoareTripleChecker+Valid, 5871 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:44:07,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2253 Valid, 5871 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1037 Invalid, 2 Unknown, 0 Unchecked, 11.3s Time] [2021-11-23 02:44:07,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92875 states. [2021-11-23 02:44:12,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92875 to 92823. [2021-11-23 02:44:12,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92823 states, 53021 states have (on average 1.258256162652534) internal successors, (66714), 55936 states have internal predecessors, (66714), 30754 states have call successors, (30754), 9070 states have call predecessors, (30754), 9046 states have return successors, (30772), 29588 states have call predecessors, (30772), 30754 states have call successors, (30772) [2021-11-23 02:44:12,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92823 states to 92823 states and 128240 transitions. [2021-11-23 02:44:12,653 INFO L78 Accepts]: Start accepts. Automaton has 92823 states and 128240 transitions. Word has length 237 [2021-11-23 02:44:12,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:44:12,654 INFO L470 AbstractCegarLoop]: Abstraction has 92823 states and 128240 transitions. [2021-11-23 02:44:12,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-23 02:44:12,654 INFO L276 IsEmpty]: Start isEmpty. Operand 92823 states and 128240 transitions. [2021-11-23 02:44:12,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-11-23 02:44:12,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:44:12,669 INFO L514 BasicCegarLoop]: trace histogram [20, 14, 14, 14, 14, 14, 14, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:44:12,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 02:44:12,671 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:44:12,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:44:12,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1488865151, now seen corresponding path program 1 times [2021-11-23 02:44:12,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:44:12,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094441325] [2021-11-23 02:44:12,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:44:12,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:44:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:44:13,338 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 965 trivial. 0 not checked. [2021-11-23 02:44:13,339 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:44:13,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094441325] [2021-11-23 02:44:13,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094441325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:44:13,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:44:13,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:44:13,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193521753] [2021-11-23 02:44:13,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:44:13,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:44:13,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:44:13,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:44:13,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:44:13,342 INFO L87 Difference]: Start difference. First operand 92823 states and 128240 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26)