./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-can-mcp251x.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_89e000f1-05d1-4c56-bfe1-b871117b553b/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e000f1-05d1-4c56-bfe1-b871117b553b/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_89e000f1-05d1-4c56-bfe1-b871117b553b/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e000f1-05d1-4c56-bfe1-b871117b553b/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-can-mcp251x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e000f1-05d1-4c56-bfe1-b871117b553b/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_89e000f1-05d1-4c56-bfe1-b871117b553b/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 34736e16fed7ff8cc88604084fa777d707e75948c95ce657a43a86ad92782d71 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:52:50,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:52:50,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:52:50,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:52:50,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:52:50,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:52:50,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:52:50,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:52:50,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:52:50,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:52:50,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:52:50,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:52:50,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:52:50,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:52:50,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:52:50,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:52:50,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:52:50,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:52:50,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:52:50,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:52:50,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:52:50,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:52:50,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:52:50,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:52:50,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:52:50,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:52:50,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:52:50,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:52:50,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:52:50,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:52:50,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:52:50,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:52:50,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:52:50,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:52:50,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:52:50,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:52:50,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:52:50,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:52:50,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:52:50,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:52:50,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:52:50,941 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e000f1-05d1-4c56-bfe1-b871117b553b/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 01:52:50,989 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:52:50,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:52:50,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:52:50,990 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:52:50,998 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:52:50,998 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 01:52:50,998 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 01:52:50,999 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 01:52:50,999 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 01:52:50,999 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 01:52:51,000 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 01:52:51,001 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 01:52:51,001 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 01:52:51,001 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 01:52:51,001 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 01:52:51,002 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 01:52:51,002 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 01:52:51,002 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 01:52:51,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:52:51,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:52:51,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:52:51,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:52:51,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:52:51,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:52:51,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:52:51,005 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:52:51,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:52:51,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:52:51,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:52:51,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:52:51,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:52:51,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:52:51,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:52:51,009 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 01:52:51,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:52:51,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:52:51,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:52:51,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 01:52:51,010 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_89e000f1-05d1-4c56-bfe1-b871117b553b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e000f1-05d1-4c56-bfe1-b871117b553b/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34736e16fed7ff8cc88604084fa777d707e75948c95ce657a43a86ad92782d71 [2021-11-23 01:52:51,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:52:51,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:52:51,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:52:51,323 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:52:51,325 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:52:51,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e000f1-05d1-4c56-bfe1-b871117b553b/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i [2021-11-23 01:52:51,406 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e000f1-05d1-4c56-bfe1-b871117b553b/bin/utaipan-EQgc7hIp5V/data/459f967a6/26c66640e247461d95dda34f674dd1a0/FLAGa7c5ec61f [2021-11-23 01:52:52,347 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:52:52,348 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e000f1-05d1-4c56-bfe1-b871117b553b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i [2021-11-23 01:52:52,405 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e000f1-05d1-4c56-bfe1-b871117b553b/bin/utaipan-EQgc7hIp5V/data/459f967a6/26c66640e247461d95dda34f674dd1a0/FLAGa7c5ec61f [2021-11-23 01:52:52,782 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e000f1-05d1-4c56-bfe1-b871117b553b/bin/utaipan-EQgc7hIp5V/data/459f967a6/26c66640e247461d95dda34f674dd1a0 [2021-11-23 01:52:52,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:52:52,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:52:52,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:52:52,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:52:52,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:52:52,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:52" (1/1) ... [2021-11-23 01:52:52,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78d8e4b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:52, skipping insertion in model container [2021-11-23 01:52:52,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:52" (1/1) ... [2021-11-23 01:52:52,813 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:52:52,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:52:55,505 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_89e000f1-05d1-4c56-bfe1-b871117b553b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278128,278141] [2021-11-23 01:52:55,509 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_89e000f1-05d1-4c56-bfe1-b871117b553b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278294,278307] [2021-11-23 01:52:55,516 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_89e000f1-05d1-4c56-bfe1-b871117b553b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278458,278471] [2021-11-23 01:52:55,517 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_89e000f1-05d1-4c56-bfe1-b871117b553b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278623,278636] [2021-11-23 01:52:55,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:52:55,615 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:52:56,041 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_89e000f1-05d1-4c56-bfe1-b871117b553b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278128,278141] [2021-11-23 01:52:56,041 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_89e000f1-05d1-4c56-bfe1-b871117b553b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278294,278307] [2021-11-23 01:52:56,042 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_89e000f1-05d1-4c56-bfe1-b871117b553b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278458,278471] [2021-11-23 01:52:56,042 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_89e000f1-05d1-4c56-bfe1-b871117b553b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278623,278636] [2021-11-23 01:52:56,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:52:56,212 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:52:56,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56 WrapperNode [2021-11-23 01:52:56,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:52:56,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:52:56,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:52:56,214 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:52:56,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56" (1/1) ... [2021-11-23 01:52:56,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56" (1/1) ... [2021-11-23 01:52:56,509 INFO L137 Inliner]: procedures = 340, calls = 1497, calls flagged for inlining = 194, calls inlined = 177, statements flattened = 4027 [2021-11-23 01:52:56,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:52:56,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:52:56,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:52:56,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:52:56,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56" (1/1) ... [2021-11-23 01:52:56,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56" (1/1) ... [2021-11-23 01:52:56,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56" (1/1) ... [2021-11-23 01:52:56,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56" (1/1) ... [2021-11-23 01:52:56,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56" (1/1) ... [2021-11-23 01:52:56,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56" (1/1) ... [2021-11-23 01:52:56,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56" (1/1) ... [2021-11-23 01:52:56,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:52:56,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:52:56,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:52:56,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:52:56,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56" (1/1) ... [2021-11-23 01:52:56,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:52:56,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e000f1-05d1-4c56-bfe1-b871117b553b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:52:56,817 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e000f1-05d1-4c56-bfe1-b871117b553b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 01:52:56,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e000f1-05d1-4c56-bfe1-b871117b553b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 01:52:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 01:52:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 01:52:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 01:52:56,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 01:52:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 01:52:56,867 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 01:52:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-23 01:52:56,867 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-23 01:52:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2021-11-23 01:52:56,868 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2021-11-23 01:52:56,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 01:52:56,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 01:52:56,868 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open_clean [2021-11-23 01:52:56,868 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open_clean [2021-11-23 01:52:56,868 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 01:52:56,869 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 01:52:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure devm_regulator_get [2021-11-23 01:52:56,869 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_regulator_get [2021-11-23 01:52:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_spi_trans [2021-11-23 01:52:56,869 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_spi_trans [2021-11-23 01:52:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2021-11-23 01:52:56,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2021-11-23 01:52:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-23 01:52:56,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-23 01:52:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_read_reg [2021-11-23 01:52:56,870 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_read_reg [2021-11-23 01:52:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 01:52:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 01:52:56,871 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 01:52:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 01:52:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 01:52:56,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 01:52:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_stop [2021-11-23 01:52:56,872 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_stop [2021-11-23 01:52:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_bits [2021-11-23 01:52:56,872 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_bits [2021-11-23 01:52:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 01:52:56,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 01:52:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-23 01:52:56,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-23 01:52:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx_ni [2021-11-23 01:52:56,873 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx_ni [2021-11-23 01:52:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2021-11-23 01:52:56,874 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2021-11-23 01:52:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 01:52:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 01:52:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2021-11-23 01:52:56,874 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2021-11-23 01:52:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-23 01:52:56,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-23 01:52:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 01:52:56,875 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 01:52:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 01:52:56,875 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 01:52:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2021-11-23 01:52:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2021-11-23 01:52:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 01:52:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 01:52:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-23 01:52:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-23 01:52:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2021-11-23 01:52:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2021-11-23 01:52:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure clk_disable_unprepare [2021-11-23 01:52:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_disable_unprepare [2021-11-23 01:52:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-23 01:52:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-23 01:52:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-23 01:52:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-23 01:52:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure clk_unprepare [2021-11-23 01:52:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_unprepare [2021-11-23 01:52:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 01:52:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_set_normal_mode [2021-11-23 01:52:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_set_normal_mode [2021-11-23 01:52:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 01:52:56,879 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 01:52:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_remove [2021-11-23 01:52:56,879 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_remove [2021-11-23 01:52:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 01:52:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 01:52:56,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 01:52:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_error_skb [2021-11-23 01:52:56,880 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_error_skb [2021-11-23 01:52:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_sleep [2021-11-23 01:52:56,880 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_sleep [2021-11-23 01:52:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-23 01:52:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-23 01:52:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 01:52:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-23 01:52:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-23 01:52:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_clean [2021-11-23 01:52:56,882 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_clean [2021-11-23 01:52:56,882 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2021-11-23 01:52:56,882 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2021-11-23 01:52:56,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 01:52:56,882 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 01:52:56,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-23 01:52:56,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-23 01:52:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_power_enable [2021-11-23 01:52:56,883 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_power_enable [2021-11-23 01:52:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-23 01:52:56,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-23 01:52:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_suspend [2021-11-23 01:52:56,884 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_suspend [2021-11-23 01:52:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 01:52:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mcp_lock_of_mcp251x_priv [2021-11-23 01:52:56,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mcp_lock_of_mcp251x_priv [2021-11-23 01:52:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open [2021-11-23 01:52:56,884 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open [2021-11-23 01:52:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_probe [2021-11-23 01:52:56,885 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_probe [2021-11-23 01:52:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mcp_lock_of_mcp251x_priv [2021-11-23 01:52:56,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mcp_lock_of_mcp251x_priv [2021-11-23 01:52:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 01:52:56,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 01:52:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_resume [2021-11-23 01:52:56,886 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_resume [2021-11-23 01:52:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 01:52:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-23 01:52:56,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-23 01:52:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-23 01:52:56,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-23 01:52:56,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-11-23 01:52:56,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-11-23 01:52:56,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-23 01:52:56,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-23 01:52:56,887 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_reset [2021-11-23 01:52:56,888 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_reset [2021-11-23 01:52:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:52:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 01:52:56,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 01:52:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 01:52:56,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 01:52:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 01:52:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2021-11-23 01:52:56,889 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2021-11-23 01:52:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 01:52:56,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 01:52:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 01:52:56,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 01:52:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2021-11-23 01:52:56,890 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2021-11-23 01:52:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-23 01:52:56,890 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-23 01:52:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_setup [2021-11-23 01:52:56,890 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_setup [2021-11-23 01:52:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 01:52:56,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 01:52:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2021-11-23 01:52:56,891 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2021-11-23 01:52:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-23 01:52:56,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-23 01:52:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 01:52:56,892 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 01:52:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_rx [2021-11-23 01:52:56,892 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_rx [2021-11-23 01:52:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_is_2510 [2021-11-23 01:52:56,892 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_is_2510 [2021-11-23 01:52:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:52:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2021-11-23 01:52:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2021-11-23 01:52:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_reg [2021-11-23 01:52:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_reg [2021-11-23 01:52:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-11-23 01:52:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-11-23 01:52:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 01:52:56,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 01:52:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:52:56,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:52:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-23 01:52:56,894 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-23 01:52:57,650 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:52:57,655 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:52:58,154 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 01:53:43,869 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 01:53:44,968 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:53:46,759 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:53:46,760 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 01:53:46,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:53:46 BoogieIcfgContainer [2021-11-23 01:53:46,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:53:46,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:53:46,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:53:46,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:53:46,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:52:52" (1/3) ... [2021-11-23 01:53:46,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a98f682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:53:46, skipping insertion in model container [2021-11-23 01:53:46,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56" (2/3) ... [2021-11-23 01:53:46,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a98f682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:53:46, skipping insertion in model container [2021-11-23 01:53:46,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:53:46" (3/3) ... [2021-11-23 01:53:46,774 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i [2021-11-23 01:53:46,782 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:53:46,783 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-23 01:53:46,852 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:53:46,869 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 01:53:46,873 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-23 01:53:46,932 INFO L276 IsEmpty]: Start isEmpty. Operand has 1104 states, 666 states have (on average 1.3273273273273274) internal successors, (884), 689 states have internal predecessors, (884), 359 states have call successors, (359), 77 states have call predecessors, (359), 76 states have return successors, (350), 344 states have call predecessors, (350), 350 states have call successors, (350) [2021-11-23 01:53:46,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-23 01:53:46,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:53:46,960 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:46,962 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:53:46,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:53:46,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1836371569, now seen corresponding path program 1 times [2021-11-23 01:53:46,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:53:46,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573232551] [2021-11-23 01:53:46,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:53:46,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:53:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:48,067 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2021-11-23 01:53:48,067 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:53:48,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573232551] [2021-11-23 01:53:48,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573232551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:53:48,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:53:48,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:53:48,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838651842] [2021-11-23 01:53:48,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:53:48,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:53:48,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:53:48,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:53:48,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:53:48,122 INFO L87 Difference]: Start difference. First operand has 1104 states, 666 states have (on average 1.3273273273273274) internal successors, (884), 689 states have internal predecessors, (884), 359 states have call successors, (359), 77 states have call predecessors, (359), 76 states have return successors, (350), 344 states have call predecessors, (350), 350 states have call successors, (350) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-23 01:53:50,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:53:53,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:53:53,053 INFO L93 Difference]: Finished difference Result 3134 states and 4649 transitions. [2021-11-23 01:53:53,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:53:53,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 131 [2021-11-23 01:53:53,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:53:53,111 INFO L225 Difference]: With dead ends: 3134 [2021-11-23 01:53:53,111 INFO L226 Difference]: Without dead ends: 2035 [2021-11-23 01:53:53,131 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 01:53:53,137 INFO L933 BasicCegarLoop]: 1675 mSDtfsCounter, 1437 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-23 01:53:53,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1437 Valid, 2991 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 489 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-11-23 01:53:53,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2021-11-23 01:53:53,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2016. [2021-11-23 01:53:53,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 1227 states have (on average 1.321923390383048) internal successors, (1622), 1272 states have internal predecessors, (1622), 641 states have call successors, (641), 149 states have call predecessors, (641), 145 states have return successors, (679), 617 states have call predecessors, (679), 637 states have call successors, (679) [2021-11-23 01:53:53,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 2942 transitions. [2021-11-23 01:53:53,423 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 2942 transitions. Word has length 131 [2021-11-23 01:53:53,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:53:53,427 INFO L470 AbstractCegarLoop]: Abstraction has 2016 states and 2942 transitions. [2021-11-23 01:53:53,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-23 01:53:53,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 2942 transitions. [2021-11-23 01:53:53,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-23 01:53:53,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:53:53,443 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 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] [2021-11-23 01:53:53,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 01:53:53,444 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:53:53,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:53:53,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1104741546, now seen corresponding path program 1 times [2021-11-23 01:53:53,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:53:53,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879693567] [2021-11-23 01:53:53,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:53:53,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:53:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2021-11-23 01:53:53,860 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:53:53,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879693567] [2021-11-23 01:53:53,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879693567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:53:53,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:53:53,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:53:53,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763439378] [2021-11-23 01:53:53,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:53:53,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:53:53,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:53:53,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:53:53,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:53:53,864 INFO L87 Difference]: Start difference. First operand 2016 states and 2942 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 01:53:55,931 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:53:59,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:53:59,094 INFO L93 Difference]: Finished difference Result 5915 states and 8631 transitions. [2021-11-23 01:53:59,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:53:59,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 135 [2021-11-23 01:53:59,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:53:59,136 INFO L225 Difference]: With dead ends: 5915 [2021-11-23 01:53:59,137 INFO L226 Difference]: Without dead ends: 3922 [2021-11-23 01:53:59,150 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 01:53:59,152 INFO L933 BasicCegarLoop]: 1632 mSDtfsCounter, 1464 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-23 01:53:59,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1464 Valid, 2911 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 508 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2021-11-23 01:53:59,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2021-11-23 01:53:59,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3918. [2021-11-23 01:53:59,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3918 states, 2402 states have (on average 1.3201498751040799) internal successors, (3171), 2484 states have internal predecessors, (3171), 1226 states have call successors, (1226), 294 states have call predecessors, (1226), 287 states have return successors, (1306), 1185 states have call predecessors, (1306), 1222 states have call successors, (1306) [2021-11-23 01:53:59,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3918 states to 3918 states and 5703 transitions. [2021-11-23 01:53:59,427 INFO L78 Accepts]: Start accepts. Automaton has 3918 states and 5703 transitions. Word has length 135 [2021-11-23 01:53:59,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:53:59,428 INFO L470 AbstractCegarLoop]: Abstraction has 3918 states and 5703 transitions. [2021-11-23 01:53:59,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 01:53:59,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3918 states and 5703 transitions. [2021-11-23 01:53:59,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-23 01:53:59,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:53:59,431 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:59,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 01:53:59,432 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:53:59,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:53:59,433 INFO L85 PathProgramCache]: Analyzing trace with hash -532134367, now seen corresponding path program 1 times [2021-11-23 01:53:59,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:53:59,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416948752] [2021-11-23 01:53:59,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:53:59,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:53:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2021-11-23 01:53:59,804 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:53:59,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416948752] [2021-11-23 01:53:59,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416948752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:53:59,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:53:59,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:53:59,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392498238] [2021-11-23 01:53:59,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:53:59,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:53:59,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:53:59,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:53:59,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:53:59,807 INFO L87 Difference]: Start difference. First operand 3918 states and 5703 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 01:54:01,879 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:54:06,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:54:06,020 INFO L93 Difference]: Finished difference Result 11272 states and 16329 transitions. [2021-11-23 01:54:06,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:54:06,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2021-11-23 01:54:06,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:54:06,099 INFO L225 Difference]: With dead ends: 11272 [2021-11-23 01:54:06,099 INFO L226 Difference]: Without dead ends: 7377 [2021-11-23 01:54:06,127 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 01:54:06,131 INFO L933 BasicCegarLoop]: 1734 mSDtfsCounter, 1324 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-23 01:54:06,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1324 Valid, 2997 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 590 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-11-23 01:54:06,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7377 states. [2021-11-23 01:54:06,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7377 to 7352. [2021-11-23 01:54:06,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7352 states, 4474 states have (on average 1.2988377291014752) internal successors, (5811), 4644 states have internal predecessors, (5811), 2306 states have call successors, (2306), 582 states have call predecessors, (2306), 569 states have return successors, (2406), 2217 states have call predecessors, (2406), 2302 states have call successors, (2406) [2021-11-23 01:54:06,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7352 states to 7352 states and 10523 transitions. [2021-11-23 01:54:06,790 INFO L78 Accepts]: Start accepts. Automaton has 7352 states and 10523 transitions. Word has length 133 [2021-11-23 01:54:06,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:54:06,791 INFO L470 AbstractCegarLoop]: Abstraction has 7352 states and 10523 transitions. [2021-11-23 01:54:06,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 01:54:06,792 INFO L276 IsEmpty]: Start isEmpty. Operand 7352 states and 10523 transitions. [2021-11-23 01:54:06,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-23 01:54:06,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:54:06,795 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:06,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 01:54:06,796 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:54:06,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:54:06,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1949411335, now seen corresponding path program 1 times [2021-11-23 01:54:06,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:54:06,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297885201] [2021-11-23 01:54:06,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:54:06,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:54:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:54:07,130 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2021-11-23 01:54:07,131 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:54:07,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297885201] [2021-11-23 01:54:07,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297885201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:54:07,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:54:07,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:54:07,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872428544] [2021-11-23 01:54:07,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:54:07,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:54:07,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:54:07,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:54:07,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:54:07,133 INFO L87 Difference]: Start difference. First operand 7352 states and 10523 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 01:54:09,200 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:54:12,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:54:12,984 INFO L93 Difference]: Finished difference Result 17756 states and 25319 transitions. [2021-11-23 01:54:12,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:54:12,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2021-11-23 01:54:12,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:54:13,081 INFO L225 Difference]: With dead ends: 17756 [2021-11-23 01:54:13,081 INFO L226 Difference]: Without dead ends: 10427 [2021-11-23 01:54:13,132 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 01:54:13,135 INFO L933 BasicCegarLoop]: 1634 mSDtfsCounter, 1418 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-23 01:54:13,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1418 Valid, 2924 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 520 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-11-23 01:54:13,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10427 states. [2021-11-23 01:54:13,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10427 to 10402. [2021-11-23 01:54:13,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10402 states, 6318 states have (on average 1.2841088952200064) internal successors, (8113), 6566 states have internal predecessors, (8113), 3234 states have call successors, (3234), 866 states have call predecessors, (3234), 847 states have return successors, (3378), 3091 states have call predecessors, (3378), 3230 states have call successors, (3378) [2021-11-23 01:54:13,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10402 states to 10402 states and 14725 transitions. [2021-11-23 01:54:13,930 INFO L78 Accepts]: Start accepts. Automaton has 10402 states and 14725 transitions. Word has length 134 [2021-11-23 01:54:13,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:54:13,931 INFO L470 AbstractCegarLoop]: Abstraction has 10402 states and 14725 transitions. [2021-11-23 01:54:13,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 01:54:13,933 INFO L276 IsEmpty]: Start isEmpty. Operand 10402 states and 14725 transitions. [2021-11-23 01:54:13,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-23 01:54:13,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:54:13,936 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:13,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 01:54:13,936 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:54:13,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:54:13,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1156232625, now seen corresponding path program 1 times [2021-11-23 01:54:13,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:54:13,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241507237] [2021-11-23 01:54:13,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:54:13,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:54:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:54:14,420 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2021-11-23 01:54:14,420 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:54:14,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241507237] [2021-11-23 01:54:14,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241507237] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:54:14,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:54:14,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 01:54:14,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002856838] [2021-11-23 01:54:14,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:54:14,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 01:54:14,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:54:14,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 01:54:14,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 01:54:14,423 INFO L87 Difference]: Start difference. First operand 10402 states and 14725 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-23 01:54:16,487 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:54:29,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:54:29,850 INFO L93 Difference]: Finished difference Result 41025 states and 58566 transitions. [2021-11-23 01:54:29,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:54:29,851 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2021-11-23 01:54:29,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:54:30,082 INFO L225 Difference]: With dead ends: 41025 [2021-11-23 01:54:30,082 INFO L226 Difference]: Without dead ends: 30646 [2021-11-23 01:54:30,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 01:54:30,158 INFO L933 BasicCegarLoop]: 2020 mSDtfsCounter, 5906 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 1939 mSolverCounterSat, 2103 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6002 SdHoareTripleChecker+Valid, 4493 SdHoareTripleChecker+Invalid, 4043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2103 IncrementalHoareTripleChecker+Valid, 1939 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:54:30,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6002 Valid, 4493 Invalid, 4043 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2103 Valid, 1939 Invalid, 1 Unknown, 0 Unchecked, 14.1s Time] [2021-11-23 01:54:30,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30646 states. [2021-11-23 01:54:31,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30646 to 30274. [2021-11-23 01:54:31,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30274 states, 18354 states have (on average 1.2828266317968835) internal successors, (23545), 19166 states have internal predecessors, (23545), 9426 states have call successors, (9426), 2570 states have call predecessors, (9426), 2491 states have return successors, (10386), 8903 states have call predecessors, (10386), 9422 states have call successors, (10386) [2021-11-23 01:54:32,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30274 states to 30274 states and 43357 transitions. [2021-11-23 01:54:32,110 INFO L78 Accepts]: Start accepts. Automaton has 30274 states and 43357 transitions. Word has length 140 [2021-11-23 01:54:32,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:54:32,111 INFO L470 AbstractCegarLoop]: Abstraction has 30274 states and 43357 transitions. [2021-11-23 01:54:32,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-23 01:54:32,112 INFO L276 IsEmpty]: Start isEmpty. Operand 30274 states and 43357 transitions. [2021-11-23 01:54:32,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-23 01:54:32,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:54:32,117 INFO L514 BasicCegarLoop]: trace histogram [13, 11, 11, 11, 11, 11, 11, 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] [2021-11-23 01:54:32,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 01:54:32,117 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:54:32,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:54:32,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1329762001, now seen corresponding path program 1 times [2021-11-23 01:54:32,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:54:32,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678817956] [2021-11-23 01:54:32,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:54:32,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:54:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:54:32,410 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2021-11-23 01:54:32,410 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:54:32,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678817956] [2021-11-23 01:54:32,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678817956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:54:32,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:54:32,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:54:32,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447059161] [2021-11-23 01:54:32,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:54:32,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:54:32,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:54:32,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:54:32,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:54:32,412 INFO L87 Difference]: Start difference. First operand 30274 states and 43357 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-23 01:54:34,477 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:54:38,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:54:38,924 INFO L93 Difference]: Finished difference Result 72990 states and 104276 transitions. [2021-11-23 01:54:38,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:54:38,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 153 [2021-11-23 01:54:38,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:54:39,206 INFO L225 Difference]: With dead ends: 72990 [2021-11-23 01:54:39,207 INFO L226 Difference]: Without dead ends: 42739 [2021-11-23 01:54:39,461 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 01:54:39,463 INFO L933 BasicCegarLoop]: 1792 mSDtfsCounter, 1433 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-23 01:54:39,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1433 Valid, 3083 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 580 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-11-23 01:54:39,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42739 states. [2021-11-23 01:54:41,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42739 to 42674. [2021-11-23 01:54:41,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42674 states, 25978 states have (on average 1.277850488875202) internal successors, (33196), 27195 states have internal predecessors, (33196), 13104 states have call successors, (13104), 3693 states have call predecessors, (13104), 3589 states have return successors, (14288), 12326 states have call predecessors, (14288), 13100 states have call successors, (14288) [2021-11-23 01:54:41,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42674 states to 42674 states and 60588 transitions. [2021-11-23 01:54:41,908 INFO L78 Accepts]: Start accepts. Automaton has 42674 states and 60588 transitions. Word has length 153 [2021-11-23 01:54:41,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:54:41,909 INFO L470 AbstractCegarLoop]: Abstraction has 42674 states and 60588 transitions. [2021-11-23 01:54:41,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-23 01:54:41,909 INFO L276 IsEmpty]: Start isEmpty. Operand 42674 states and 60588 transitions. [2021-11-23 01:54:41,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-23 01:54:41,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:54:41,913 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:54:41,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 01:54:41,914 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:54:41,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:54:41,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1547051652, now seen corresponding path program 1 times [2021-11-23 01:54:41,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:54:41,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765230030] [2021-11-23 01:54:41,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:54:41,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:54:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:54:42,413 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2021-11-23 01:54:42,413 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:54:42,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765230030] [2021-11-23 01:54:42,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765230030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:54:42,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:54:42,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 01:54:42,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10070486] [2021-11-23 01:54:42,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:54:42,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 01:54:42,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:54:42,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 01:54:42,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:54:42,416 INFO L87 Difference]: Start difference. First operand 42674 states and 60588 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-23 01:54:44,487 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:54:48,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:54:48,992 INFO L93 Difference]: Finished difference Result 42680 states and 60593 transitions. [2021-11-23 01:54:48,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 01:54:48,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 178 [2021-11-23 01:54:48,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:54:49,222 INFO L225 Difference]: With dead ends: 42680 [2021-11-23 01:54:49,223 INFO L226 Difference]: Without dead ends: 42678 [2021-11-23 01:54:49,242 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 01:54:49,243 INFO L933 BasicCegarLoop]: 1313 mSDtfsCounter, 1513 mSDsluCounter, 3105 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 3934 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-23 01:54:49,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1516 Valid, 3934 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 737 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-11-23 01:54:49,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42678 states. [2021-11-23 01:54:51,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42678 to 42678. [2021-11-23 01:54:51,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42678 states, 25981 states have (on average 1.277818405758054) internal successors, (33199), 27198 states have internal predecessors, (33199), 13104 states have call successors, (13104), 3694 states have call predecessors, (13104), 3590 states have return successors, (14288), 12326 states have call predecessors, (14288), 13100 states have call successors, (14288) [2021-11-23 01:54:51,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42678 states to 42678 states and 60591 transitions. [2021-11-23 01:54:51,825 INFO L78 Accepts]: Start accepts. Automaton has 42678 states and 60591 transitions. Word has length 178 [2021-11-23 01:54:51,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:54:51,830 INFO L470 AbstractCegarLoop]: Abstraction has 42678 states and 60591 transitions. [2021-11-23 01:54:51,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-23 01:54:51,830 INFO L276 IsEmpty]: Start isEmpty. Operand 42678 states and 60591 transitions. [2021-11-23 01:54:51,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-23 01:54:51,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:54:51,835 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 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] [2021-11-23 01:54:51,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 01:54:51,836 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:54:51,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:54:51,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1060984614, now seen corresponding path program 1 times [2021-11-23 01:54:51,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:54:51,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441411669] [2021-11-23 01:54:51,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:54:51,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:54:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:54:52,286 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-11-23 01:54:52,286 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:54:52,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441411669] [2021-11-23 01:54:52,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441411669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:54:52,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:54:52,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 01:54:52,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417655682] [2021-11-23 01:54:52,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:54:52,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 01:54:52,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:54:52,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 01:54:52,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:54:52,289 INFO L87 Difference]: Start difference. First operand 42678 states and 60591 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 01:54:54,354 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:54:59,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:54:59,179 INFO L93 Difference]: Finished difference Result 42684 states and 60596 transitions. [2021-11-23 01:54:59,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 01:54:59,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 182 [2021-11-23 01:54:59,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:54:59,400 INFO L225 Difference]: With dead ends: 42684 [2021-11-23 01:54:59,401 INFO L226 Difference]: Without dead ends: 42682 [2021-11-23 01:54:59,423 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 01:54:59,424 INFO L933 BasicCegarLoop]: 1316 mSDtfsCounter, 1509 mSDsluCounter, 3105 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 3937 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-23 01:54:59,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1511 Valid, 3937 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 737 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-11-23 01:54:59,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42682 states. [2021-11-23 01:55:01,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42682 to 42682. [2021-11-23 01:55:01,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42682 states, 25984 states have (on average 1.2777863300492611) internal successors, (33202), 27201 states have internal predecessors, (33202), 13104 states have call successors, (13104), 3695 states have call predecessors, (13104), 3591 states have return successors, (14288), 12326 states have call predecessors, (14288), 13100 states have call successors, (14288) [2021-11-23 01:55:01,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42682 states to 42682 states and 60594 transitions. [2021-11-23 01:55:01,850 INFO L78 Accepts]: Start accepts. Automaton has 42682 states and 60594 transitions. Word has length 182 [2021-11-23 01:55:01,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:55:01,851 INFO L470 AbstractCegarLoop]: Abstraction has 42682 states and 60594 transitions. [2021-11-23 01:55:01,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 01:55:01,852 INFO L276 IsEmpty]: Start isEmpty. Operand 42682 states and 60594 transitions. [2021-11-23 01:55:01,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-23 01:55:01,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:55:01,857 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 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] [2021-11-23 01:55:01,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 01:55:01,858 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:55:01,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:55:01,858 INFO L85 PathProgramCache]: Analyzing trace with hash -417827268, now seen corresponding path program 1 times [2021-11-23 01:55:01,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:55:01,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505931846] [2021-11-23 01:55:01,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:55:01,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:55:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:55:02,336 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2021-11-23 01:55:02,336 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:55:02,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505931846] [2021-11-23 01:55:02,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505931846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:55:02,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:55:02,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 01:55:02,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076414172] [2021-11-23 01:55:02,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:55:02,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 01:55:02,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:55:02,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 01:55:02,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:55:02,340 INFO L87 Difference]: Start difference. First operand 42682 states and 60594 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, (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 01:55:04,408 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:55:10,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:55:10,081 INFO L93 Difference]: Finished difference Result 47743 states and 66114 transitions. [2021-11-23 01:55:10,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 01:55:10,082 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, (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 188 [2021-11-23 01:55:10,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:55:10,299 INFO L225 Difference]: With dead ends: 47743 [2021-11-23 01:55:10,299 INFO L226 Difference]: Without dead ends: 47739 [2021-11-23 01:55:10,321 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 01:55:10,322 INFO L933 BasicCegarLoop]: 1373 mSDtfsCounter, 1104 mSDsluCounter, 3759 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 4570 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-23 01:55:10,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1105 Valid, 4570 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 826 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-11-23 01:55:10,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47739 states. [2021-11-23 01:55:12,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47739 to 47739. [2021-11-23 01:55:12,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47739 states, 28676 states have (on average 1.2646115218301017) internal successors, (36264), 29938 states have internal predecessors, (36264), 14331 states have call successors, (14331), 4855 states have call predecessors, (14331), 4729 states have return successors, (15515), 13532 states have call predecessors, (15515), 14327 states have call successors, (15515) [2021-11-23 01:55:12,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47739 states to 47739 states and 66110 transitions. [2021-11-23 01:55:12,901 INFO L78 Accepts]: Start accepts. Automaton has 47739 states and 66110 transitions. Word has length 188 [2021-11-23 01:55:12,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:55:12,902 INFO L470 AbstractCegarLoop]: Abstraction has 47739 states and 66110 transitions. [2021-11-23 01:55:12,902 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, (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 01:55:12,902 INFO L276 IsEmpty]: Start isEmpty. Operand 47739 states and 66110 transitions. [2021-11-23 01:55:12,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-23 01:55:12,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:55:12,909 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:55:12,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 01:55:12,909 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:55:12,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:55:12,910 INFO L85 PathProgramCache]: Analyzing trace with hash 435233340, now seen corresponding path program 1 times [2021-11-23 01:55:12,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:55:12,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290936277] [2021-11-23 01:55:12,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:55:12,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:55:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:55:13,381 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2021-11-23 01:55:13,381 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:55:13,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290936277] [2021-11-23 01:55:13,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290936277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:55:13,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:55:13,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 01:55:13,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236300470] [2021-11-23 01:55:13,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:55:13,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 01:55:13,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:55:13,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 01:55:13,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:55:13,384 INFO L87 Difference]: Start difference. First operand 47739 states and 66110 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 01:55:15,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:55:20,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:55:20,610 INFO L93 Difference]: Finished difference Result 47739 states and 66110 transitions. [2021-11-23 01:55:20,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 01:55:20,611 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 194 [2021-11-23 01:55:20,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:55:20,789 INFO L225 Difference]: With dead ends: 47739 [2021-11-23 01:55:20,789 INFO L226 Difference]: Without dead ends: 47284 [2021-11-23 01:55:20,808 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 01:55:20,809 INFO L933 BasicCegarLoop]: 1314 mSDtfsCounter, 1504 mSDsluCounter, 3104 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 3934 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-23 01:55:20,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1504 Valid, 3934 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 732 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2021-11-23 01:55:20,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47284 states. [2021-11-23 01:55:23,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47284 to 47284. [2021-11-23 01:55:23,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47284 states, 28568 states have (on average 1.2605712685522263) internal successors, (36012), 29686 states have internal predecessors, (36012), 14036 states have call successors, (14036), 4802 states have call predecessors, (14036), 4678 states have return successors, (15224), 13382 states have call predecessors, (15224), 14036 states have call successors, (15224) [2021-11-23 01:55:23,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47284 states to 47284 states and 65272 transitions. [2021-11-23 01:55:23,308 INFO L78 Accepts]: Start accepts. Automaton has 47284 states and 65272 transitions. Word has length 194 [2021-11-23 01:55:23,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:55:23,309 INFO L470 AbstractCegarLoop]: Abstraction has 47284 states and 65272 transitions. [2021-11-23 01:55:23,309 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 01:55:23,309 INFO L276 IsEmpty]: Start isEmpty. Operand 47284 states and 65272 transitions. [2021-11-23 01:55:23,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-23 01:55:23,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:55:23,316 INFO L514 BasicCegarLoop]: trace histogram [16, 11, 11, 11, 11, 11, 11, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:55:23,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 01:55:23,317 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:55:23,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:55:23,317 INFO L85 PathProgramCache]: Analyzing trace with hash 383210522, now seen corresponding path program 1 times [2021-11-23 01:55:23,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:55:23,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294638138] [2021-11-23 01:55:23,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:55:23,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:55:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:55:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2021-11-23 01:55:23,670 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:55:23,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294638138] [2021-11-23 01:55:23,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294638138] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:55:23,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396479005] [2021-11-23 01:55:23,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:55:23,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:55:23,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e000f1-05d1-4c56-bfe1-b871117b553b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:55:23,674 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e000f1-05d1-4c56-bfe1-b871117b553b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:55:23,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e000f1-05d1-4c56-bfe1-b871117b553b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 01:55:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:55:24,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 1989 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 01:55:24,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:55:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2021-11-23 01:55:25,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 01:55:25,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396479005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:55:25,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 01:55:25,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 01:55:25,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340291740] [2021-11-23 01:55:25,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:55:25,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:55:25,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:55:25,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:55:25,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:55:25,234 INFO L87 Difference]: Start difference. First operand 47284 states and 65272 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 01:55:27,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:55:33,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:55:33,173 INFO L93 Difference]: Finished difference Result 112036 states and 155100 transitions. [2021-11-23 01:55:33,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:55:33,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 195 [2021-11-23 01:55:33,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:55:33,461 INFO L225 Difference]: With dead ends: 112036 [2021-11-23 01:55:33,461 INFO L226 Difference]: Without dead ends: 67947 [2021-11-23 01:55:33,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:55:33,587 INFO L933 BasicCegarLoop]: 1833 mSDtfsCounter, 1407 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1407 SdHoareTripleChecker+Valid, 3081 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-23 01:55:33,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1407 Valid, 3081 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 552 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2021-11-23 01:55:33,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67947 states. [2021-11-23 01:55:36,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67947 to 67895. [2021-11-23 01:55:36,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67895 states, 41065 states have (on average 1.2616339948861561) internal successors, (51809), 42686 states have internal predecessors, (51809), 20080 states have call successors, (20080), 6926 states have call predecessors, (20080), 6748 states have return successors, (21826), 19113 states have call predecessors, (21826), 20080 states have call successors, (21826) [2021-11-23 01:55:36,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67895 states to 67895 states and 93715 transitions. [2021-11-23 01:55:36,882 INFO L78 Accepts]: Start accepts. Automaton has 67895 states and 93715 transitions. Word has length 195 [2021-11-23 01:55:36,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:55:36,882 INFO L470 AbstractCegarLoop]: Abstraction has 67895 states and 93715 transitions. [2021-11-23 01:55:36,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 01:55:36,883 INFO L276 IsEmpty]: Start isEmpty. Operand 67895 states and 93715 transitions. [2021-11-23 01:55:36,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-23 01:55:36,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:55:36,893 INFO L514 BasicCegarLoop]: trace histogram [17, 11, 11, 11, 11, 11, 11, 5, 5, 4, 4, 4, 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] [2021-11-23 01:55:36,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e000f1-05d1-4c56-bfe1-b871117b553b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 01:55:37,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e000f1-05d1-4c56-bfe1-b871117b553b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-23 01:55:37,108 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:55:37,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:55:37,109 INFO L85 PathProgramCache]: Analyzing trace with hash 501771179, now seen corresponding path program 1 times [2021-11-23 01:55:37,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:55:37,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976796456] [2021-11-23 01:55:37,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:55:37,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:55:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:55:37,711 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2021-11-23 01:55:37,712 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:55:37,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976796456] [2021-11-23 01:55:37,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976796456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:55:37,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:55:37,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:55:37,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907772073] [2021-11-23 01:55:37,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:55:37,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:55:37,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:55:37,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:55:37,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:55:37,714 INFO L87 Difference]: Start difference. First operand 67895 states and 93715 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, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-23 01:55:39,775 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:55:47,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:55:47,754 INFO L93 Difference]: Finished difference Result 162927 states and 225351 transitions. [2021-11-23 01:55:47,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:55:47,755 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, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 213 [2021-11-23 01:55:47,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:55:48,260 INFO L225 Difference]: With dead ends: 162927 [2021-11-23 01:55:48,260 INFO L226 Difference]: Without dead ends: 98227 [2021-11-23 01:55:48,448 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 01:55:48,449 INFO L933 BasicCegarLoop]: 2462 mSDtfsCounter, 1400 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 3721 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:55:48,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1400 Valid, 3721 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 739 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-11-23 01:55:48,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98227 states.