./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-spinlock_drivers-net-wan-farsync.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI --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 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:45:36,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:45:36,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:45:36,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:45:36,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:45:36,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:45:36,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:45:36,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:45:36,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:45:36,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:45:36,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:45:36,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:45:36,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:45:36,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:45:36,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:45:36,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:45:36,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:45:36,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:45:36,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:45:36,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:45:36,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:45:36,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:45:36,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:45:36,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:45:36,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:45:36,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:45:36,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:45:36,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:45:36,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:45:36,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:45:36,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:45:36,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:45:36,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:45:36,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:45:36,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:45:36,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:45:36,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:45:36,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:45:36,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:45:36,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:45:36,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:45:36,807 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:45:36,835 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:45:36,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:45:36,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:45:36,836 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:45:36,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:45:36,837 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:45:36,838 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:45:36,838 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:45:36,838 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:45:36,838 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:45:36,839 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:45:36,839 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:45:36,839 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:45:36,839 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:45:36,839 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:45:36,840 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:45:36,840 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:45:36,840 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:45:36,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:45:36,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:45:36,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:45:36,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:45:36,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:45:36,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:45:36,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:45:36,843 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:45:36,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:45:36,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:45:36,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:45:36,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:45:36,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:45:36,844 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:45:36,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:45:36,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:45:36,845 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:45:36,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:45:36,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:45:36,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:45:36,846 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 [2022-11-03 03:45:37,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:45:37,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:45:37,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:45:37,264 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:45:37,265 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:45:37,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2022-11-03 03:45:37,356 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/data/b0b94a829/9aa75459374c42cb9a83ccaa8dda5f23/FLAGe1f42c518 [2022-11-03 03:45:38,568 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:45:38,570 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2022-11-03 03:45:38,629 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/data/b0b94a829/9aa75459374c42cb9a83ccaa8dda5f23/FLAGe1f42c518 [2022-11-03 03:45:38,831 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/data/b0b94a829/9aa75459374c42cb9a83ccaa8dda5f23 [2022-11-03 03:45:38,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:45:38,837 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:45:38,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:45:38,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:45:38,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:45:38,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:45:38" (1/1) ... [2022-11-03 03:45:38,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@158d100c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:38, skipping insertion in model container [2022-11-03 03:45:38,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:45:38" (1/1) ... [2022-11-03 03:45:38,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:45:39,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:45:42,913 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_525a742e-4450-4fc0-ae43-384a6fd431f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2022-11-03 03:45:42,916 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_525a742e-4450-4fc0-ae43-384a6fd431f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2022-11-03 03:45:42,917 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_525a742e-4450-4fc0-ae43-384a6fd431f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2022-11-03 03:45:42,927 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_525a742e-4450-4fc0-ae43-384a6fd431f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2022-11-03 03:45:42,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:45:42,991 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:45:43,475 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_525a742e-4450-4fc0-ae43-384a6fd431f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2022-11-03 03:45:43,476 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_525a742e-4450-4fc0-ae43-384a6fd431f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2022-11-03 03:45:43,503 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_525a742e-4450-4fc0-ae43-384a6fd431f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2022-11-03 03:45:43,504 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_525a742e-4450-4fc0-ae43-384a6fd431f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2022-11-03 03:45:43,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:45:43,680 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:45:43,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:43 WrapperNode [2022-11-03 03:45:43,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:45:43,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:45:43,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:45:43,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:45:43,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:43" (1/1) ... [2022-11-03 03:45:43,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:43" (1/1) ... [2022-11-03 03:45:44,129 INFO L138 Inliner]: procedures = 418, calls = 1969, calls flagged for inlining = 195, calls inlined = 179, statements flattened = 5220 [2022-11-03 03:45:44,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:45:44,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:45:44,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:45:44,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:45:44,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:43" (1/1) ... [2022-11-03 03:45:44,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:43" (1/1) ... [2022-11-03 03:45:44,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:43" (1/1) ... [2022-11-03 03:45:44,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:43" (1/1) ... [2022-11-03 03:45:44,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:43" (1/1) ... [2022-11-03 03:45:44,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:43" (1/1) ... [2022-11-03 03:45:44,417 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:43" (1/1) ... [2022-11-03 03:45:44,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:43" (1/1) ... [2022-11-03 03:45:44,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:45:44,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:45:44,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:45:44,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:45:44,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:43" (1/1) ... [2022-11-03 03:45:44,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:45:44,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:45:44,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:45:44,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:45:44,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fst_cleanup_module_12_2 [2022-11-03 03:45:44,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fst_cleanup_module_12_2 [2022-11-03 03:45:44,587 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 03:45:44,587 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 03:45:44,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:45:44,587 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:45:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 03:45:44,588 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 03:45:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:45:44,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:45:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure fst_remove_one [2022-11-03 03:45:44,589 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_remove_one [2022-11-03 03:45:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 03:45:44,589 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 03:45:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 03:45:44,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 03:45:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-03 03:45:44,590 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-03 03:45:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-03 03:45:44,590 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-03 03:45:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2022-11-03 03:45:44,591 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2022-11-03 03:45:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2022-11-03 03:45:44,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2022-11-03 03:45:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_67 [2022-11-03 03:45:44,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_67 [2022-11-03 03:45:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 03:45:44,593 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 03:45:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure fst_close [2022-11-03 03:45:44,593 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_close [2022-11-03 03:45:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 03:45:44,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 03:45:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-11-03 03:45:44,594 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-11-03 03:45:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 03:45:44,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 03:45:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure fst_tx_timeout [2022-11-03 03:45:44,595 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_tx_timeout [2022-11-03 03:45:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 03:45:44,596 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 03:45:44,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:45:44,597 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 03:45:44,598 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 03:45:44,599 INFO L130 BoogieDeclarations]: Found specification of procedure fst_open [2022-11-03 03:45:44,599 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_open [2022-11-03 03:45:44,599 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_type_trans [2022-11-03 03:45:44,599 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_type_trans [2022-11-03 03:45:44,600 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 03:45:44,600 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 03:45:44,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:45:44,601 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-03 03:45:44,601 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-03 03:45:44,601 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 03:45:44,602 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 03:45:44,602 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 03:45:44,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 03:45:44,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:45:44,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 03:45:44,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 03:45:44,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:45:44,604 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2022-11-03 03:45:44,604 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2022-11-03 03:45:44,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:45:44,604 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:45:44,605 INFO L130 BoogieDeclarations]: Found specification of procedure fst_issue_cmd [2022-11-03 03:45:44,606 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_issue_cmd [2022-11-03 03:45:44,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 03:45:44,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 03:45:44,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 03:45:44,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 03:45:44,607 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 03:45:44,607 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 03:45:44,607 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 03:45:44,608 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 03:45:44,608 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 03:45:44,609 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 03:45:44,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 03:45:44,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 03:45:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:45:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 03:45:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 03:45:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-03 03:45:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-03 03:45:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_card_lock_of_fst_card_info [2022-11-03 03:45:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_card_lock_of_fst_card_info [2022-11-03 03:45:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:45:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure fst_cpureset [2022-11-03 03:45:44,614 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_cpureset [2022-11-03 03:45:44,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 03:45:44,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 03:45:44,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:45:44,615 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:45:44,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:45:44,615 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-03 03:45:44,615 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-03 03:45:44,616 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:45:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:45:44,617 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-03 03:45:44,617 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-03 03:45:44,617 INFO L130 BoogieDeclarations]: Found specification of procedure fst_q_work_item [2022-11-03 03:45:44,617 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_q_work_item [2022-11-03 03:45:44,617 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-03 03:45:44,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-03 03:45:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 03:45:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 03:45:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 03:45:44,625 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 03:45:44,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 03:45:44,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 03:45:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-03 03:45:44,626 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-03 03:45:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2022-11-03 03:45:44,628 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2022-11-03 03:45:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2022-11-03 03:45:44,634 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2022-11-03 03:45:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:45:44,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:45:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:45:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:45:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:45:44,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:45:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 03:45:44,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 03:45:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 03:45:44,636 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 03:45:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:45:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:45:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 03:45:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 03:45:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-03 03:45:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-03 03:45:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 03:45:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 03:45:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:45:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-11-03 03:45:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-11-03 03:45:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:45:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2022-11-03 03:45:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2022-11-03 03:45:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:45:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-03 03:45:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-03 03:45:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 03:45:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 03:45:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-03 03:45:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-03 03:45:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-03 03:45:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-03 03:45:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 03:45:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 03:45:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-03 03:45:44,642 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-03 03:45:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-03 03:45:44,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-03 03:45:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure farsync_type_trans [2022-11-03 03:45:44,642 INFO L138 BoogieDeclarations]: Found implementation of procedure farsync_type_trans [2022-11-03 03:45:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 03:45:44,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 03:45:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 03:45:44,643 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 03:45:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_fst_work_q_lock [2022-11-03 03:45:44,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_fst_work_q_lock [2022-11-03 03:45:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:45:44,644 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:45:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:45:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure fst_disable_intr [2022-11-03 03:45:44,645 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_disable_intr [2022-11-03 03:45:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:45:44,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:45:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 03:45:44,645 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 03:45:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-03 03:45:44,646 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-03 03:45:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure do_bottom_half_tx [2022-11-03 03:45:44,646 INFO L138 BoogieDeclarations]: Found implementation of procedure do_bottom_half_tx [2022-11-03 03:45:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure fst_process_rx_status [2022-11-03 03:45:44,647 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_process_rx_status [2022-11-03 03:45:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 03:45:44,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 03:45:44,649 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2022-11-03 03:45:44,650 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2022-11-03 03:45:44,650 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2022-11-03 03:45:44,650 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2022-11-03 03:45:44,650 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-03 03:45:44,650 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-03 03:45:44,651 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-03 03:45:44,651 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-03 03:45:44,651 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-03 03:45:44,651 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-03 03:45:44,651 INFO L130 BoogieDeclarations]: Found specification of procedure fst_clear_intr [2022-11-03 03:45:44,651 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_clear_intr [2022-11-03 03:45:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:45:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2022-11-03 03:45:44,701 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2022-11-03 03:45:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 03:45:44,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 03:45:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-11-03 03:45:44,702 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-11-03 03:45:45,654 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:45:45,663 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:45:45,833 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:45:50,389 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 03:45:50,609 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:45:51,778 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:45:51,778 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:45:51,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:45:51 BoogieIcfgContainer [2022-11-03 03:45:51,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:45:51,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:45:51,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:45:51,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:45:51,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:45:38" (1/3) ... [2022-11-03 03:45:51,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e14d431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:45:51, skipping insertion in model container [2022-11-03 03:45:51,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:43" (2/3) ... [2022-11-03 03:45:51,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e14d431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:45:51, skipping insertion in model container [2022-11-03 03:45:51,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:45:51" (3/3) ... [2022-11-03 03:45:51,794 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2022-11-03 03:45:51,815 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:45:51,816 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 03:45:51,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:45:51,933 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1fa242ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:45:51,934 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 03:45:51,946 INFO L276 IsEmpty]: Start isEmpty. Operand has 1429 states, 848 states have (on average 1.3113207547169812) internal successors, (1112), 862 states have internal predecessors, (1112), 488 states have call successors, (488), 91 states have call predecessors, (488), 90 states have return successors, (481), 479 states have call predecessors, (481), 481 states have call successors, (481) [2022-11-03 03:45:51,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 03:45:51,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:51,981 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:45:51,982 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:45:51,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:51,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1481671742, now seen corresponding path program 1 times [2022-11-03 03:45:52,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:52,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289109958] [2022-11-03 03:45:52,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:52,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 03:45:52,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:52,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289109958] [2022-11-03 03:45:52,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289109958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:52,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:52,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:45:52,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627513066] [2022-11-03 03:45:52,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:52,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:45:52,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:52,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:45:52,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:45:52,755 INFO L87 Difference]: Start difference. First operand has 1429 states, 848 states have (on average 1.3113207547169812) internal successors, (1112), 862 states have internal predecessors, (1112), 488 states have call successors, (488), 91 states have call predecessors, (488), 90 states have return successors, (481), 479 states have call predecessors, (481), 481 states have call successors, (481) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-03 03:45:55,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:55,252 INFO L93 Difference]: Finished difference Result 4182 states and 6195 transitions. [2022-11-03 03:45:55,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:45:55,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2022-11-03 03:45:55,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:55,318 INFO L225 Difference]: With dead ends: 4182 [2022-11-03 03:45:55,318 INFO L226 Difference]: Without dead ends: 2753 [2022-11-03 03:45:55,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:45:55,342 INFO L413 NwaCegarLoop]: 2263 mSDtfsCounter, 1973 mSDsluCounter, 2021 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1973 SdHoareTripleChecker+Valid, 4038 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:55,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1973 Valid, 4038 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 03:45:55,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2022-11-03 03:45:55,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 2749. [2022-11-03 03:45:55,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 1648 states have (on average 1.3046116504854368) internal successors, (2150), 1675 states have internal predecessors, (2150), 922 states have call successors, (922), 177 states have call predecessors, (922), 176 states have return successors, (918), 914 states have call predecessors, (918), 918 states have call successors, (918) [2022-11-03 03:45:55,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 3990 transitions. [2022-11-03 03:45:55,799 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 3990 transitions. Word has length 71 [2022-11-03 03:45:55,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:55,801 INFO L495 AbstractCegarLoop]: Abstraction has 2749 states and 3990 transitions. [2022-11-03 03:45:55,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-03 03:45:55,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 3990 transitions. [2022-11-03 03:45:55,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-03 03:45:55,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:55,813 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:45:55,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:45:55,814 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:45:55,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:55,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1350800671, now seen corresponding path program 1 times [2022-11-03 03:45:55,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:55,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649409016] [2022-11-03 03:45:55,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:55,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:56,725 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 03:45:56,726 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:56,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649409016] [2022-11-03 03:45:56,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649409016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:56,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:56,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:45:56,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311578671] [2022-11-03 03:45:56,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:56,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:45:56,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:56,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:45:56,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:45:56,737 INFO L87 Difference]: Start difference. First operand 2749 states and 3990 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-03 03:46:05,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:08,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:08,025 INFO L93 Difference]: Finished difference Result 7146 states and 10374 transitions. [2022-11-03 03:46:08,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:46:08,026 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 79 [2022-11-03 03:46:08,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:08,061 INFO L225 Difference]: With dead ends: 7146 [2022-11-03 03:46:08,062 INFO L226 Difference]: Without dead ends: 4408 [2022-11-03 03:46:08,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:08,077 INFO L413 NwaCegarLoop]: 2488 mSDtfsCounter, 6072 mSDsluCounter, 2949 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 1971 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6287 SdHoareTripleChecker+Valid, 4872 SdHoareTripleChecker+Invalid, 4745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1971 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:08,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6287 Valid, 4872 Invalid, 4745 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1971 Valid, 2773 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2022-11-03 03:46:08,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2022-11-03 03:46:08,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 4354. [2022-11-03 03:46:08,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4354 states, 2660 states have (on average 1.3150375939849623) internal successors, (3498), 2703 states have internal predecessors, (3498), 1401 states have call successors, (1401), 293 states have call predecessors, (1401), 290 states have return successors, (1397), 1385 states have call predecessors, (1397), 1397 states have call successors, (1397) [2022-11-03 03:46:08,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 6296 transitions. [2022-11-03 03:46:08,459 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 6296 transitions. Word has length 79 [2022-11-03 03:46:08,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:08,463 INFO L495 AbstractCegarLoop]: Abstraction has 4354 states and 6296 transitions. [2022-11-03 03:46:08,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-03 03:46:08,464 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 6296 transitions. [2022-11-03 03:46:08,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-03 03:46:08,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:08,468 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:08,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:46:08,468 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:46:08,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:08,480 INFO L85 PathProgramCache]: Analyzing trace with hash -692326567, now seen corresponding path program 1 times [2022-11-03 03:46:08,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:08,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677741423] [2022-11-03 03:46:08,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:08,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:08,735 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 03:46:08,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:08,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677741423] [2022-11-03 03:46:08,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677741423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:08,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:08,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:08,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569015945] [2022-11-03 03:46:08,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:08,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:08,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:08,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:08,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:08,738 INFO L87 Difference]: Start difference. First operand 4354 states and 6296 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-03 03:46:11,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:11,017 INFO L93 Difference]: Finished difference Result 10564 states and 15184 transitions. [2022-11-03 03:46:11,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:11,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 81 [2022-11-03 03:46:11,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:11,060 INFO L225 Difference]: With dead ends: 10564 [2022-11-03 03:46:11,060 INFO L226 Difference]: Without dead ends: 6221 [2022-11-03 03:46:11,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:11,080 INFO L413 NwaCegarLoop]: 2166 mSDtfsCounter, 1526 mSDsluCounter, 2023 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 3946 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:11,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 3946 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-03 03:46:11,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6221 states. [2022-11-03 03:46:11,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6221 to 6192. [2022-11-03 03:46:11,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6192 states, 3767 states have (on average 1.3100610565436688) internal successors, (4935), 3834 states have internal predecessors, (4935), 1956 states have call successors, (1956), 471 states have call predecessors, (1956), 466 states have return successors, (1955), 1922 states have call predecessors, (1955), 1952 states have call successors, (1955) [2022-11-03 03:46:11,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 8846 transitions. [2022-11-03 03:46:11,495 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 8846 transitions. Word has length 81 [2022-11-03 03:46:11,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:11,496 INFO L495 AbstractCegarLoop]: Abstraction has 6192 states and 8846 transitions. [2022-11-03 03:46:11,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-03 03:46:11,497 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 8846 transitions. [2022-11-03 03:46:11,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-03 03:46:11,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:11,499 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:11,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:46:11,500 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:46:11,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:11,500 INFO L85 PathProgramCache]: Analyzing trace with hash 322112022, now seen corresponding path program 1 times [2022-11-03 03:46:11,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:11,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574162078] [2022-11-03 03:46:11,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:11,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:11,676 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 03:46:11,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:11,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574162078] [2022-11-03 03:46:11,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574162078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:11,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:11,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:11,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041964271] [2022-11-03 03:46:11,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:11,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:11,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:11,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:11,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:11,682 INFO L87 Difference]: Start difference. First operand 6192 states and 8846 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:46:16,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:16,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:16,705 INFO L93 Difference]: Finished difference Result 17112 states and 24352 transitions. [2022-11-03 03:46:16,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:16,706 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 79 [2022-11-03 03:46:16,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:16,784 INFO L225 Difference]: With dead ends: 17112 [2022-11-03 03:46:16,784 INFO L226 Difference]: Without dead ends: 10931 [2022-11-03 03:46:16,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:16,815 INFO L413 NwaCegarLoop]: 2201 mSDtfsCounter, 1757 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1757 SdHoareTripleChecker+Valid, 3967 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:16,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1757 Valid, 3967 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 554 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-11-03 03:46:16,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10931 states. [2022-11-03 03:46:17,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10931 to 10890. [2022-11-03 03:46:17,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10890 states, 6630 states have (on average 1.3015082956259427) internal successors, (8629), 6768 states have internal predecessors, (8629), 3375 states have call successors, (3375), 891 states have call predecessors, (3375), 882 states have return successors, (3377), 3293 states have call predecessors, (3377), 3371 states have call successors, (3377) [2022-11-03 03:46:17,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10890 states to 10890 states and 15381 transitions. [2022-11-03 03:46:17,662 INFO L78 Accepts]: Start accepts. Automaton has 10890 states and 15381 transitions. Word has length 79 [2022-11-03 03:46:17,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:17,662 INFO L495 AbstractCegarLoop]: Abstraction has 10890 states and 15381 transitions. [2022-11-03 03:46:17,663 INFO L496 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:46:17,663 INFO L276 IsEmpty]: Start isEmpty. Operand 10890 states and 15381 transitions. [2022-11-03 03:46:17,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 03:46:17,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:17,665 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:17,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:46:17,666 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:46:17,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:17,666 INFO L85 PathProgramCache]: Analyzing trace with hash 734917167, now seen corresponding path program 1 times [2022-11-03 03:46:17,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:17,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988878770] [2022-11-03 03:46:17,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:17,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 03:46:17,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:17,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988878770] [2022-11-03 03:46:17,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988878770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:17,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:17,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:17,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807719269] [2022-11-03 03:46:17,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:17,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:17,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:17,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:17,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:17,876 INFO L87 Difference]: Start difference. First operand 10890 states and 15381 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:46:23,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:23,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:23,258 INFO L93 Difference]: Finished difference Result 31352 states and 44234 transitions. [2022-11-03 03:46:23,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:23,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 80 [2022-11-03 03:46:23,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:23,371 INFO L225 Difference]: With dead ends: 31352 [2022-11-03 03:46:23,372 INFO L226 Difference]: Without dead ends: 20473 [2022-11-03 03:46:23,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:23,415 INFO L413 NwaCegarLoop]: 2415 mSDtfsCounter, 1946 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 4181 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:23,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1946 Valid, 4181 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 589 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-11-03 03:46:23,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20473 states. [2022-11-03 03:46:24,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20473 to 20435. [2022-11-03 03:46:24,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20435 states, 12484 states have (on average 1.2916533162447934) internal successors, (16125), 12762 states have internal predecessors, (16125), 6260 states have call successors, (6260), 1705 states have call predecessors, (6260), 1688 states have return successors, (6268), 6085 states have call predecessors, (6268), 6256 states have call successors, (6268) [2022-11-03 03:46:24,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20435 states to 20435 states and 28653 transitions. [2022-11-03 03:46:24,896 INFO L78 Accepts]: Start accepts. Automaton has 20435 states and 28653 transitions. Word has length 80 [2022-11-03 03:46:24,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:24,898 INFO L495 AbstractCegarLoop]: Abstraction has 20435 states and 28653 transitions. [2022-11-03 03:46:24,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:46:24,900 INFO L276 IsEmpty]: Start isEmpty. Operand 20435 states and 28653 transitions. [2022-11-03 03:46:24,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-03 03:46:24,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:24,902 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 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] [2022-11-03 03:46:24,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:46:24,903 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:46:24,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:24,904 INFO L85 PathProgramCache]: Analyzing trace with hash -33063383, now seen corresponding path program 1 times [2022-11-03 03:46:24,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:24,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050995943] [2022-11-03 03:46:24,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:24,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:25,298 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-03 03:46:25,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:25,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050995943] [2022-11-03 03:46:25,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050995943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:25,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:25,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:25,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972044829] [2022-11-03 03:46:25,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:25,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:25,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:25,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:25,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:25,303 INFO L87 Difference]: Start difference. First operand 20435 states and 28653 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:46:31,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:31,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:31,665 INFO L93 Difference]: Finished difference Result 56324 states and 78938 transitions. [2022-11-03 03:46:31,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:31,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 92 [2022-11-03 03:46:31,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:31,864 INFO L225 Difference]: With dead ends: 56324 [2022-11-03 03:46:31,864 INFO L226 Difference]: Without dead ends: 35900 [2022-11-03 03:46:31,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:31,941 INFO L413 NwaCegarLoop]: 2552 mSDtfsCounter, 1756 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 4291 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:31,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1756 Valid, 4291 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 583 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-11-03 03:46:31,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35900 states. [2022-11-03 03:46:34,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35900 to 35844. [2022-11-03 03:46:34,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35844 states, 21877 states have (on average 1.289436394386799) internal successors, (28209), 22445 states have internal predecessors, (28209), 10962 states have call successors, (10962), 3067 states have call predecessors, (10962), 3002 states have return successors, (10990), 10551 states have call predecessors, (10990), 10958 states have call successors, (10990) [2022-11-03 03:46:35,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35844 states to 35844 states and 50161 transitions. [2022-11-03 03:46:35,217 INFO L78 Accepts]: Start accepts. Automaton has 35844 states and 50161 transitions. Word has length 92 [2022-11-03 03:46:35,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:35,219 INFO L495 AbstractCegarLoop]: Abstraction has 35844 states and 50161 transitions. [2022-11-03 03:46:35,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:46:35,219 INFO L276 IsEmpty]: Start isEmpty. Operand 35844 states and 50161 transitions. [2022-11-03 03:46:35,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:46:35,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:35,222 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-11-03 03:46:35,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:46:35,223 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:46:35,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:35,223 INFO L85 PathProgramCache]: Analyzing trace with hash 602146562, now seen corresponding path program 1 times [2022-11-03 03:46:35,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:35,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74664607] [2022-11-03 03:46:35,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:35,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:35,460 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-03 03:46:35,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:35,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74664607] [2022-11-03 03:46:35,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74664607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:35,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:35,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:35,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125093856] [2022-11-03 03:46:35,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:35,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:35,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:35,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:35,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:35,463 INFO L87 Difference]: Start difference. First operand 35844 states and 50161 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:46:38,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:38,807 INFO L93 Difference]: Finished difference Result 71656 states and 100327 transitions. [2022-11-03 03:46:38,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:38,808 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), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 122 [2022-11-03 03:46:38,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:39,014 INFO L225 Difference]: With dead ends: 71656 [2022-11-03 03:46:39,014 INFO L226 Difference]: Without dead ends: 35892 [2022-11-03 03:46:39,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:39,120 INFO L413 NwaCegarLoop]: 1796 mSDtfsCounter, 0 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3590 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:39,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3590 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-03 03:46:39,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35892 states. [2022-11-03 03:46:41,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35892 to 35892. [2022-11-03 03:46:42,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35892 states, 21925 states have (on average 1.2888027366020525) internal successors, (28257), 22493 states have internal predecessors, (28257), 10962 states have call successors, (10962), 3067 states have call predecessors, (10962), 3002 states have return successors, (10990), 10551 states have call predecessors, (10990), 10958 states have call successors, (10990) [2022-11-03 03:46:42,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35892 states to 35892 states and 50209 transitions. [2022-11-03 03:46:42,418 INFO L78 Accepts]: Start accepts. Automaton has 35892 states and 50209 transitions. Word has length 122 [2022-11-03 03:46:42,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:42,419 INFO L495 AbstractCegarLoop]: Abstraction has 35892 states and 50209 transitions. [2022-11-03 03:46:42,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:46:42,419 INFO L276 IsEmpty]: Start isEmpty. Operand 35892 states and 50209 transitions. [2022-11-03 03:46:42,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-03 03:46:42,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:42,422 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-11-03 03:46:42,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:46:42,422 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:46:42,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:42,423 INFO L85 PathProgramCache]: Analyzing trace with hash 838275709, now seen corresponding path program 1 times [2022-11-03 03:46:42,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:42,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763707537] [2022-11-03 03:46:42,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:42,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-03 03:46:42,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:42,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763707537] [2022-11-03 03:46:42,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763707537] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:46:42,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671888388] [2022-11-03 03:46:42,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:42,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:46:42,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:46:42,727 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:46:42,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:46:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:43,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 1605 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:46:43,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:43,827 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-03 03:46:43,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:46:43,994 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-03 03:46:43,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671888388] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:46:43,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1443204865] [2022-11-03 03:46:44,022 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2022-11-03 03:46:44,023 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:46:44,028 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:46:44,035 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:46:44,036 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:46:46,827 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 03:46:47,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 57 [2022-11-03 03:46:47,942 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-03 03:47:24,581 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:47:24,998 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:47:26,100 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 78 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 755 treesize of output 644 [2022-11-03 03:47:26,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2022-11-03 03:47:26,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 994 treesize of output 801 [2022-11-03 03:47:26,772 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 994 treesize of output 801 [2022-11-03 03:47:33,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,154 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6138 treesize of output 5725 [2022-11-03 03:47:34,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,120 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6134 treesize of output 5721 [2022-11-03 03:47:34,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:35,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:35,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:35,003 INFO L244 Elim1Store]: Index analysis took 186 ms [2022-11-03 03:47:35,011 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 78 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 6139 treesize of output 5860 [2022-11-03 03:47:35,324 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2022-11-03 03:47:42,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 03:47:42,589 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 03:47:42,625 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-03 03:47:44,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:48:01,014 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:48:01,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:48:01,152 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:48:01,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:48:01,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:48:01,877 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 03:48:01,878 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 626 treesize of output 631 [2022-11-03 03:48:02,035 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 03:48:02,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 622 treesize of output 627 [2022-11-03 03:48:03,084 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-03 03:48:03,434 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-03 03:48:03,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 03:48:03,486 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 03:48:05,278 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:48:17,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 03:48:17,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:48:17,622 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 03:48:17,625 INFO L158 Benchmark]: Toolchain (without parser) took 158788.46ms. Allocated memory was 113.2MB in the beginning and 8.1GB in the end (delta: 7.9GB). Free memory was 83.1MB in the beginning and 3.8GB in the end (delta: -3.7GB). Peak memory consumption was 5.4GB. Max. memory is 16.1GB. [2022-11-03 03:48:17,625 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 113.2MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:48:17,626 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4842.02ms. Allocated memory was 113.2MB in the beginning and 157.3MB in the end (delta: 44.0MB). Free memory was 82.7MB in the beginning and 55.5MB in the end (delta: 27.2MB). Peak memory consumption was 80.8MB. Max. memory is 16.1GB. [2022-11-03 03:48:17,626 INFO L158 Benchmark]: Boogie Procedure Inliner took 447.49ms. Allocated memory was 157.3MB in the beginning and 257.9MB in the end (delta: 100.7MB). Free memory was 55.5MB in the beginning and 162.5MB in the end (delta: -107.0MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2022-11-03 03:48:17,626 INFO L158 Benchmark]: Boogie Preprocessor took 354.65ms. Allocated memory is still 257.9MB. Free memory was 162.5MB in the beginning and 132.1MB in the end (delta: 30.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-03 03:48:17,627 INFO L158 Benchmark]: RCFGBuilder took 7297.10ms. Allocated memory was 257.9MB in the beginning and 385.9MB in the end (delta: 127.9MB). Free memory was 132.1MB in the beginning and 129.2MB in the end (delta: 2.9MB). Peak memory consumption was 168.6MB. Max. memory is 16.1GB. [2022-11-03 03:48:17,627 INFO L158 Benchmark]: TraceAbstraction took 145838.32ms. Allocated memory was 385.9MB in the beginning and 8.1GB in the end (delta: 7.7GB). Free memory was 129.2MB in the beginning and 3.8GB in the end (delta: -3.6GB). Peak memory consumption was 5.2GB. Max. memory is 16.1GB. [2022-11-03 03:48:17,629 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 113.2MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4842.02ms. Allocated memory was 113.2MB in the beginning and 157.3MB in the end (delta: 44.0MB). Free memory was 82.7MB in the beginning and 55.5MB in the end (delta: 27.2MB). Peak memory consumption was 80.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 447.49ms. Allocated memory was 157.3MB in the beginning and 257.9MB in the end (delta: 100.7MB). Free memory was 55.5MB in the beginning and 162.5MB in the end (delta: -107.0MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 354.65ms. Allocated memory is still 257.9MB. Free memory was 162.5MB in the beginning and 132.1MB in the end (delta: 30.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * RCFGBuilder took 7297.10ms. Allocated memory was 257.9MB in the beginning and 385.9MB in the end (delta: 127.9MB). Free memory was 132.1MB in the beginning and 129.2MB in the end (delta: 2.9MB). Peak memory consumption was 168.6MB. Max. memory is 16.1GB. * TraceAbstraction took 145838.32ms. Allocated memory was 385.9MB in the beginning and 8.1GB in the end (delta: 7.7GB). Free memory was 129.2MB in the beginning and 3.8GB in the end (delta: -3.6GB). Peak memory consumption was 5.2GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 03:48:17,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI --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 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:48:20,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:48:20,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:48:20,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:48:20,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:48:20,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:48:20,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:48:20,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:48:20,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:48:20,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:48:20,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:48:20,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:48:20,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:48:20,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:48:20,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:48:20,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:48:20,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:48:20,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:48:20,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:48:20,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:48:20,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:48:20,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:48:20,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:48:20,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:48:20,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:48:20,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:48:20,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:48:20,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:48:20,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:48:20,886 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:48:20,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:48:20,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:48:20,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:48:20,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:48:20,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:48:20,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:48:20,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:48:20,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:48:20,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:48:20,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:48:20,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:48:20,903 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 03:48:20,951 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:48:20,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:48:20,954 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:48:20,955 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:48:20,956 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:48:20,956 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:48:20,957 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:48:20,957 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:48:20,957 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:48:20,957 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:48:20,959 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:48:20,959 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:48:20,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:48:20,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:48:20,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:48:20,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:48:20,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:48:20,962 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 03:48:20,963 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 03:48:20,963 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 03:48:20,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:48:20,963 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:48:20,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:48:20,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:48:20,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 03:48:20,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:48:20,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:48:20,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:48:20,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:48:20,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:48:20,966 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 03:48:20,966 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 03:48:20,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:48:20,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:48:20,967 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 03:48:20,968 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 [2022-11-03 03:48:21,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:48:21,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:48:21,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:48:21,498 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:48:21,499 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:48:21,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2022-11-03 03:48:21,569 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/data/f4c4ec702/ff0cfff4ee1f4a7896183c79d7b4bcbd/FLAG57a0c23bc [2022-11-03 03:48:22,735 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:48:22,737 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2022-11-03 03:48:22,801 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/data/f4c4ec702/ff0cfff4ee1f4a7896183c79d7b4bcbd/FLAG57a0c23bc [2022-11-03 03:48:23,058 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/data/f4c4ec702/ff0cfff4ee1f4a7896183c79d7b4bcbd [2022-11-03 03:48:23,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:48:23,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:48:23,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:48:23,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:48:23,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:48:23,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:48:23" (1/1) ... [2022-11-03 03:48:23,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@473f7a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:23, skipping insertion in model container [2022-11-03 03:48:23,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:48:23" (1/1) ... [2022-11-03 03:48:23,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:48:23,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:48:26,364 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_525a742e-4450-4fc0-ae43-384a6fd431f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2022-11-03 03:48:26,367 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_525a742e-4450-4fc0-ae43-384a6fd431f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2022-11-03 03:48:26,368 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_525a742e-4450-4fc0-ae43-384a6fd431f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2022-11-03 03:48:26,368 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_525a742e-4450-4fc0-ae43-384a6fd431f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2022-11-03 03:48:26,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:48:26,426 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-03 03:48:26,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:48:26,879 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_525a742e-4450-4fc0-ae43-384a6fd431f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2022-11-03 03:48:26,880 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_525a742e-4450-4fc0-ae43-384a6fd431f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2022-11-03 03:48:26,880 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_525a742e-4450-4fc0-ae43-384a6fd431f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2022-11-03 03:48:26,881 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_525a742e-4450-4fc0-ae43-384a6fd431f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2022-11-03 03:48:26,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:48:26,924 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:48:27,415 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_525a742e-4450-4fc0-ae43-384a6fd431f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2022-11-03 03:48:27,415 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_525a742e-4450-4fc0-ae43-384a6fd431f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2022-11-03 03:48:27,416 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_525a742e-4450-4fc0-ae43-384a6fd431f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2022-11-03 03:48:27,416 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_525a742e-4450-4fc0-ae43-384a6fd431f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2022-11-03 03:48:27,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:48:27,643 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:48:27,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:27 WrapperNode [2022-11-03 03:48:27,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:48:27,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:48:27,645 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:48:27,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:48:27,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:27" (1/1) ... [2022-11-03 03:48:27,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:27" (1/1) ... [2022-11-03 03:48:28,046 INFO L138 Inliner]: procedures = 432, calls = 1969, calls flagged for inlining = 195, calls inlined = 179, statements flattened = 5094 [2022-11-03 03:48:28,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:48:28,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:48:28,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:48:28,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:48:28,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:27" (1/1) ... [2022-11-03 03:48:28,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:27" (1/1) ... [2022-11-03 03:48:28,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:27" (1/1) ... [2022-11-03 03:48:28,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:27" (1/1) ... [2022-11-03 03:48:28,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:27" (1/1) ... [2022-11-03 03:48:28,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:27" (1/1) ... [2022-11-03 03:48:28,316 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:27" (1/1) ... [2022-11-03 03:48:28,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:27" (1/1) ... [2022-11-03 03:48:28,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:48:28,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:48:28,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:48:28,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:48:28,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:27" (1/1) ... [2022-11-03 03:48:28,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:48:28,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:48:28,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:48:28,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:48:28,460 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fst_cleanup_module_12_2 [2022-11-03 03:48:28,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fst_cleanup_module_12_2 [2022-11-03 03:48:28,461 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 03:48:28,461 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 03:48:28,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:48:28,462 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:48:28,462 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 03:48:28,462 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 03:48:28,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:48:28,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:48:28,463 INFO L130 BoogieDeclarations]: Found specification of procedure fst_remove_one [2022-11-03 03:48:28,463 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_remove_one [2022-11-03 03:48:28,463 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 03:48:28,463 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 03:48:28,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 03:48:28,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 03:48:28,464 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-03 03:48:28,464 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-03 03:48:28,464 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-03 03:48:28,464 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-03 03:48:28,465 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2022-11-03 03:48:28,465 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2022-11-03 03:48:28,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2022-11-03 03:48:28,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2022-11-03 03:48:28,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_67 [2022-11-03 03:48:28,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_67 [2022-11-03 03:48:28,467 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 03:48:28,467 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 03:48:28,467 INFO L130 BoogieDeclarations]: Found specification of procedure fst_close [2022-11-03 03:48:28,468 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_close [2022-11-03 03:48:28,468 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2022-11-03 03:48:28,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2022-11-03 03:48:28,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 03:48:28,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 03:48:28,469 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-11-03 03:48:28,469 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-11-03 03:48:28,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 03:48:28,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 03:48:28,470 INFO L130 BoogieDeclarations]: Found specification of procedure fst_tx_timeout [2022-11-03 03:48:28,472 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_tx_timeout [2022-11-03 03:48:28,472 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 03:48:28,472 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 03:48:28,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:48:28,474 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 03:48:28,474 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 03:48:28,474 INFO L130 BoogieDeclarations]: Found specification of procedure fst_open [2022-11-03 03:48:28,475 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_open [2022-11-03 03:48:28,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 03:48:28,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-03 03:48:28,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-03 03:48:28,477 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_type_trans [2022-11-03 03:48:28,477 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_type_trans [2022-11-03 03:48:28,477 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 03:48:28,477 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 03:48:28,477 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-03 03:48:28,478 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-03 03:48:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 03:48:28,478 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 03:48:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 03:48:28,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 03:48:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 03:48:28,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 03:48:28,537 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2022-11-03 03:48:28,538 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2022-11-03 03:48:28,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:48:28,538 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:48:28,538 INFO L130 BoogieDeclarations]: Found specification of procedure fst_issue_cmd [2022-11-03 03:48:28,538 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_issue_cmd [2022-11-03 03:48:28,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 03:48:28,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 03:48:28,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 03:48:28,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 03:48:28,539 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 03:48:28,539 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 03:48:28,539 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 03:48:28,540 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 03:48:28,540 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 03:48:28,540 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 03:48:28,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 03:48:28,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 03:48:28,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:48:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 03:48:28,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 03:48:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-03 03:48:28,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-03 03:48:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_card_lock_of_fst_card_info [2022-11-03 03:48:28,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_card_lock_of_fst_card_info [2022-11-03 03:48:28,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:48:28,542 INFO L130 BoogieDeclarations]: Found specification of procedure fst_cpureset [2022-11-03 03:48:28,542 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_cpureset [2022-11-03 03:48:28,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 03:48:28,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 03:48:28,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:48:28,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-03 03:48:28,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-03 03:48:28,543 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:48:28,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:48:28,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-03 03:48:28,543 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-03 03:48:28,544 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-03 03:48:28,544 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-03 03:48:28,544 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-03 03:48:28,544 INFO L130 BoogieDeclarations]: Found specification of procedure fst_q_work_item [2022-11-03 03:48:28,544 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_q_work_item [2022-11-03 03:48:28,544 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-03 03:48:28,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-03 03:48:28,545 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 03:48:28,545 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 03:48:28,545 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 03:48:28,545 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 03:48:28,545 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 03:48:28,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 03:48:28,546 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-03 03:48:28,546 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-03 03:48:28,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-03 03:48:28,546 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2022-11-03 03:48:28,546 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2022-11-03 03:48:28,550 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2022-11-03 03:48:28,551 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2022-11-03 03:48:28,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:48:28,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:48:28,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-03 03:48:28,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-03 03:48:28,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-03 03:48:28,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:48:28,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-03 03:48:28,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:48:28,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:48:28,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:48:28,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 03:48:28,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 03:48:28,554 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 03:48:28,554 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 03:48:28,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:48:28,554 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:48:28,556 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 03:48:28,556 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 03:48:28,556 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-03 03:48:28,556 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-03 03:48:28,557 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 03:48:28,557 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 03:48:28,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:48:28,557 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-11-03 03:48:28,557 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-11-03 03:48:28,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:48:28,558 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2022-11-03 03:48:28,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2022-11-03 03:48:28,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-03 03:48:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-03 03:48:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-03 03:48:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 03:48:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:48:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-03 03:48:28,560 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-03 03:48:28,560 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-03 03:48:28,560 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-03 03:48:28,560 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-03 03:48:28,561 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-03 03:48:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 03:48:28,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 03:48:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-03 03:48:28,561 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-03 03:48:28,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-03 03:48:28,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-03 03:48:28,562 INFO L130 BoogieDeclarations]: Found specification of procedure farsync_type_trans [2022-11-03 03:48:28,562 INFO L138 BoogieDeclarations]: Found implementation of procedure farsync_type_trans [2022-11-03 03:48:28,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 03:48:28,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 03:48:28,563 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 03:48:28,563 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 03:48:28,564 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-11-03 03:48:28,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-11-03 03:48:28,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_fst_work_q_lock [2022-11-03 03:48:28,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_fst_work_q_lock [2022-11-03 03:48:28,565 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:48:28,565 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:48:28,565 INFO L130 BoogieDeclarations]: Found specification of procedure fst_disable_intr [2022-11-03 03:48:28,565 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_disable_intr [2022-11-03 03:48:28,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-03 03:48:28,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-03 03:48:28,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-03 03:48:28,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-03 03:48:28,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:48:28,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:48:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 03:48:28,567 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 03:48:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-03 03:48:28,568 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-03 03:48:28,568 INFO L130 BoogieDeclarations]: Found specification of procedure do_bottom_half_tx [2022-11-03 03:48:28,568 INFO L138 BoogieDeclarations]: Found implementation of procedure do_bottom_half_tx [2022-11-03 03:48:28,568 INFO L130 BoogieDeclarations]: Found specification of procedure fst_process_rx_status [2022-11-03 03:48:28,568 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_process_rx_status [2022-11-03 03:48:28,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 03:48:28,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 03:48:28,569 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2022-11-03 03:48:28,569 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2022-11-03 03:48:28,569 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2022-11-03 03:48:28,570 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2022-11-03 03:48:28,570 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-03 03:48:28,570 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-03 03:48:28,570 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-03 03:48:28,571 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-03 03:48:28,571 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-03 03:48:28,571 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-03 03:48:28,571 INFO L130 BoogieDeclarations]: Found specification of procedure fst_clear_intr [2022-11-03 03:48:28,571 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_clear_intr [2022-11-03 03:48:28,572 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2022-11-03 03:48:28,572 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2022-11-03 03:48:28,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 03:48:28,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 03:48:28,573 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-11-03 03:48:28,573 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-11-03 03:48:29,565 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:48:29,569 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:48:29,730 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:49:04,516 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 03:49:04,727 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:49:04,780 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:49:04,788 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:49:04,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:49:04 BoogieIcfgContainer [2022-11-03 03:49:04,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:49:04,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:49:04,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:49:04,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:49:04,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:48:23" (1/3) ... [2022-11-03 03:49:04,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a33cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:49:04, skipping insertion in model container [2022-11-03 03:49:04,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:27" (2/3) ... [2022-11-03 03:49:04,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a33cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:49:04, skipping insertion in model container [2022-11-03 03:49:04,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:49:04" (3/3) ... [2022-11-03 03:49:04,812 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2022-11-03 03:49:04,840 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:49:04,841 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 03:49:04,963 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:49:04,971 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7494f0a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:49:04,971 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 03:49:04,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 1831 states, 1250 states have (on average 1.2888) internal successors, (1611), 1264 states have internal predecessors, (1611), 488 states have call successors, (488), 91 states have call predecessors, (488), 90 states have return successors, (481), 479 states have call predecessors, (481), 481 states have call successors, (481) [2022-11-03 03:49:05,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-03 03:49:05,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:05,032 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:05,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:49:05,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:05,041 INFO L85 PathProgramCache]: Analyzing trace with hash -354153155, now seen corresponding path program 1 times [2022-11-03 03:49:05,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:05,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429763465] [2022-11-03 03:49:05,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:05,069 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:05,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:05,074 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:05,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 03:49:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:06,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:49:06,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:06,740 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 03:49:06,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:06,741 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:06,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429763465] [2022-11-03 03:49:06,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429763465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:06,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:06,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:49:06,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796843061] [2022-11-03 03:49:06,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:06,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:49:06,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:06,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:49:06,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:06,795 INFO L87 Difference]: Start difference. First operand has 1831 states, 1250 states have (on average 1.2888) internal successors, (1611), 1264 states have internal predecessors, (1611), 488 states have call successors, (488), 91 states have call predecessors, (488), 90 states have return successors, (481), 479 states have call predecessors, (481), 481 states have call successors, (481) 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, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-03 03:49:07,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:07,704 INFO L93 Difference]: Finished difference Result 5357 states and 7667 transitions. [2022-11-03 03:49:07,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:49:07,707 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, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 83 [2022-11-03 03:49:07,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:07,764 INFO L225 Difference]: With dead ends: 5357 [2022-11-03 03:49:07,764 INFO L226 Difference]: Without dead ends: 3530 [2022-11-03 03:49:07,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:07,787 INFO L413 NwaCegarLoop]: 3024 mSDtfsCounter, 2447 mSDsluCounter, 2508 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2447 SdHoareTripleChecker+Valid, 5532 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:07,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2447 Valid, 5532 Invalid, 34 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:49:07,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3530 states. [2022-11-03 03:49:08,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3530 to 3526. [2022-11-03 03:49:08,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 2425 states have (on average 1.285360824742268) internal successors, (3117), 2452 states have internal predecessors, (3117), 922 states have call successors, (922), 177 states have call predecessors, (922), 176 states have return successors, (918), 914 states have call predecessors, (918), 918 states have call successors, (918) [2022-11-03 03:49:08,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 4957 transitions. [2022-11-03 03:49:08,190 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 4957 transitions. Word has length 83 [2022-11-03 03:49:08,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:08,191 INFO L495 AbstractCegarLoop]: Abstraction has 3526 states and 4957 transitions. [2022-11-03 03:49:08,191 INFO L496 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, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-03 03:49:08,192 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 4957 transitions. [2022-11-03 03:49:08,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-03 03:49:08,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:08,203 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:08,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:08,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:08,428 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:49:08,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:08,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1396464343, now seen corresponding path program 1 times [2022-11-03 03:49:08,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:08,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078139461] [2022-11-03 03:49:08,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:08,431 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:08,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:08,433 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:08,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 03:49:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:10,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 1115 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:49:10,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:10,354 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 03:49:10,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:10,354 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:10,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078139461] [2022-11-03 03:49:10,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078139461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:10,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:10,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:49:10,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735233107] [2022-11-03 03:49:10,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:10,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:49:10,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:10,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:49:10,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:10,360 INFO L87 Difference]: Start difference. First operand 3526 states and 4957 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-03 03:49:11,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:11,149 INFO L93 Difference]: Finished difference Result 7778 states and 10964 transitions. [2022-11-03 03:49:11,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:49:11,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-11-03 03:49:11,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:11,179 INFO L225 Difference]: With dead ends: 7778 [2022-11-03 03:49:11,179 INFO L226 Difference]: Without dead ends: 4267 [2022-11-03 03:49:11,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:11,198 INFO L413 NwaCegarLoop]: 2893 mSDtfsCounter, 1773 mSDsluCounter, 2486 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1773 SdHoareTripleChecker+Valid, 5379 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:11,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1773 Valid, 5379 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:49:11,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2022-11-03 03:49:11,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4241. [2022-11-03 03:49:11,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4241 states, 2945 states have (on average 1.2943972835314093) internal successors, (3812), 2977 states have internal predecessors, (3812), 1076 states have call successors, (1076), 219 states have call predecessors, (1076), 217 states have return successors, (1072), 1065 states have call predecessors, (1072), 1072 states have call successors, (1072) [2022-11-03 03:49:11,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4241 states to 4241 states and 5960 transitions. [2022-11-03 03:49:11,495 INFO L78 Accepts]: Start accepts. Automaton has 4241 states and 5960 transitions. Word has length 93 [2022-11-03 03:49:11,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:11,496 INFO L495 AbstractCegarLoop]: Abstraction has 4241 states and 5960 transitions. [2022-11-03 03:49:11,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-03 03:49:11,496 INFO L276 IsEmpty]: Start isEmpty. Operand 4241 states and 5960 transitions. [2022-11-03 03:49:11,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-03 03:49:11,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:11,500 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:11,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:11,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:11,727 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:49:11,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:11,728 INFO L85 PathProgramCache]: Analyzing trace with hash -701589471, now seen corresponding path program 1 times [2022-11-03 03:49:11,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:11,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960187592] [2022-11-03 03:49:11,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:11,730 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:11,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:11,732 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:11,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 03:49:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:13,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:49:13,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 03:49:13,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:13,388 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:13,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960187592] [2022-11-03 03:49:13,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960187592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:13,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:13,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:49:13,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871305013] [2022-11-03 03:49:13,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:13,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:49:13,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:13,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:49:13,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:13,391 INFO L87 Difference]: Start difference. First operand 4241 states and 5960 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:49:14,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:14,191 INFO L93 Difference]: Finished difference Result 11121 states and 15571 transitions. [2022-11-03 03:49:14,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:49:14,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2022-11-03 03:49:14,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:14,231 INFO L225 Difference]: With dead ends: 11121 [2022-11-03 03:49:14,231 INFO L226 Difference]: Without dead ends: 6895 [2022-11-03 03:49:14,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:14,251 INFO L413 NwaCegarLoop]: 2987 mSDtfsCounter, 2287 mSDsluCounter, 2498 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2287 SdHoareTripleChecker+Valid, 5485 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:14,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2287 Valid, 5485 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:49:14,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6895 states. [2022-11-03 03:49:14,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6895 to 6865. [2022-11-03 03:49:14,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6865 states, 4766 states have (on average 1.2830465799412505) internal successors, (6115), 4823 states have internal predecessors, (6115), 1721 states have call successors, (1721), 378 states have call predecessors, (1721), 375 states have return successors, (1717), 1696 states have call predecessors, (1717), 1717 states have call successors, (1717) [2022-11-03 03:49:14,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6865 states to 6865 states and 9553 transitions. [2022-11-03 03:49:14,718 INFO L78 Accepts]: Start accepts. Automaton has 6865 states and 9553 transitions. Word has length 91 [2022-11-03 03:49:14,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:14,719 INFO L495 AbstractCegarLoop]: Abstraction has 6865 states and 9553 transitions. [2022-11-03 03:49:14,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:49:14,720 INFO L276 IsEmpty]: Start isEmpty. Operand 6865 states and 9553 transitions. [2022-11-03 03:49:14,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-03 03:49:14,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:14,722 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:14,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:14,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:14,953 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:49:14,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:14,954 INFO L85 PathProgramCache]: Analyzing trace with hash -447177211, now seen corresponding path program 1 times [2022-11-03 03:49:14,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:14,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274295633] [2022-11-03 03:49:14,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:14,956 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:14,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:14,958 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:14,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 03:49:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:16,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:49:16,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:16,489 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 03:49:16,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:16,489 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:16,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274295633] [2022-11-03 03:49:16,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274295633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:16,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:16,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:49:16,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037732668] [2022-11-03 03:49:16,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:16,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:49:16,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:16,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:49:16,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:16,492 INFO L87 Difference]: Start difference. First operand 6865 states and 9553 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-03 03:49:17,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:17,402 INFO L93 Difference]: Finished difference Result 17059 states and 23619 transitions. [2022-11-03 03:49:17,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:49:17,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 95 [2022-11-03 03:49:17,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:17,469 INFO L225 Difference]: With dead ends: 17059 [2022-11-03 03:49:17,469 INFO L226 Difference]: Without dead ends: 10209 [2022-11-03 03:49:17,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:17,502 INFO L413 NwaCegarLoop]: 2927 mSDtfsCounter, 1896 mSDsluCounter, 2513 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1896 SdHoareTripleChecker+Valid, 5440 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:17,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1896 Valid, 5440 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:49:17,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10209 states. [2022-11-03 03:49:18,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10209 to 10179. [2022-11-03 03:49:18,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10179 states, 7048 states have (on average 1.2775255391600453) internal successors, (9004), 7143 states have internal predecessors, (9004), 2508 states have call successors, (2508), 625 states have call predecessors, (2508), 620 states have return successors, (2510), 2455 states have call predecessors, (2510), 2504 states have call successors, (2510) [2022-11-03 03:49:18,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10179 states to 10179 states and 14022 transitions. [2022-11-03 03:49:18,523 INFO L78 Accepts]: Start accepts. Automaton has 10179 states and 14022 transitions. Word has length 95 [2022-11-03 03:49:18,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:18,524 INFO L495 AbstractCegarLoop]: Abstraction has 10179 states and 14022 transitions. [2022-11-03 03:49:18,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-03 03:49:18,525 INFO L276 IsEmpty]: Start isEmpty. Operand 10179 states and 14022 transitions. [2022-11-03 03:49:18,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-03 03:49:18,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:18,537 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:18,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:18,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:18,751 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:49:18,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:18,752 INFO L85 PathProgramCache]: Analyzing trace with hash 595683630, now seen corresponding path program 1 times [2022-11-03 03:49:18,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:18,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394793183] [2022-11-03 03:49:18,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:18,754 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:18,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:18,756 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:18,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 03:49:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:19,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:49:19,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 03:49:20,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:20,137 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:20,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394793183] [2022-11-03 03:49:20,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394793183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:20,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:20,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:49:20,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936562351] [2022-11-03 03:49:20,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:20,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:49:20,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:20,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:49:20,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:20,140 INFO L87 Difference]: Start difference. First operand 10179 states and 14022 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:49:21,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:21,559 INFO L93 Difference]: Finished difference Result 29165 states and 40139 transitions. [2022-11-03 03:49:21,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:49:21,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 92 [2022-11-03 03:49:21,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:21,694 INFO L225 Difference]: With dead ends: 29165 [2022-11-03 03:49:21,694 INFO L226 Difference]: Without dead ends: 19001 [2022-11-03 03:49:21,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:21,741 INFO L413 NwaCegarLoop]: 3278 mSDtfsCounter, 2419 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2419 SdHoareTripleChecker+Valid, 5777 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:21,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2419 Valid, 5777 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:49:21,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19001 states. [2022-11-03 03:49:23,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19001 to 18959. [2022-11-03 03:49:23,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18959 states, 13152 states have (on average 1.2693886861313868) internal successors, (16695), 13342 states have internal predecessors, (16695), 4633 states have call successors, (4633), 1180 states have call predecessors, (4633), 1171 states have return successors, (4641), 4520 states have call predecessors, (4641), 4629 states have call successors, (4641) [2022-11-03 03:49:23,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18959 states to 18959 states and 25969 transitions. [2022-11-03 03:49:23,354 INFO L78 Accepts]: Start accepts. Automaton has 18959 states and 25969 transitions. Word has length 92 [2022-11-03 03:49:23,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:23,356 INFO L495 AbstractCegarLoop]: Abstraction has 18959 states and 25969 transitions. [2022-11-03 03:49:23,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:49:23,357 INFO L276 IsEmpty]: Start isEmpty. Operand 18959 states and 25969 transitions. [2022-11-03 03:49:23,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-03 03:49:23,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:23,359 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 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] [2022-11-03 03:49:23,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:23,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:23,585 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:49:23,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:23,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1037125969, now seen corresponding path program 1 times [2022-11-03 03:49:23,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:23,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070000810] [2022-11-03 03:49:23,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:23,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:23,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:23,592 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:23,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 03:49:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:24,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:49:24,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:25,089 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 03:49:25,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:25,090 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:25,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070000810] [2022-11-03 03:49:25,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070000810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:25,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:25,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:49:25,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325995242] [2022-11-03 03:49:25,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:25,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:49:25,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:25,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:49:25,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:25,092 INFO L87 Difference]: Start difference. First operand 18959 states and 25969 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:49:27,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:27,286 INFO L93 Difference]: Finished difference Result 52907 states and 72393 transitions. [2022-11-03 03:49:27,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:49:27,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 108 [2022-11-03 03:49:27,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:27,472 INFO L225 Difference]: With dead ends: 52907 [2022-11-03 03:49:27,473 INFO L226 Difference]: Without dead ends: 33963 [2022-11-03 03:49:27,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:27,541 INFO L413 NwaCegarLoop]: 3578 mSDtfsCounter, 2291 mSDsluCounter, 2462 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2291 SdHoareTripleChecker+Valid, 6040 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:27,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2291 Valid, 6040 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:49:27,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33963 states. [2022-11-03 03:49:30,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33963 to 33921. [2022-11-03 03:49:30,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33921 states, 23505 states have (on average 1.2630929589449054) internal successors, (29689), 23899 states have internal predecessors, (29689), 8304 states have call successors, (8304), 2142 states have call predecessors, (8304), 2109 states have return successors, (8332), 8039 states have call predecessors, (8332), 8300 states have call successors, (8332) [2022-11-03 03:49:30,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33921 states to 33921 states and 46325 transitions. [2022-11-03 03:49:30,419 INFO L78 Accepts]: Start accepts. Automaton has 33921 states and 46325 transitions. Word has length 108 [2022-11-03 03:49:30,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:30,420 INFO L495 AbstractCegarLoop]: Abstraction has 33921 states and 46325 transitions. [2022-11-03 03:49:30,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:49:30,420 INFO L276 IsEmpty]: Start isEmpty. Operand 33921 states and 46325 transitions. [2022-11-03 03:49:30,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-03 03:49:30,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:30,423 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 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] [2022-11-03 03:49:30,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:30,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:30,648 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:49:30,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:30,649 INFO L85 PathProgramCache]: Analyzing trace with hash 13979203, now seen corresponding path program 1 times [2022-11-03 03:49:30,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:30,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252248017] [2022-11-03 03:49:30,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:30,651 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:30,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:30,653 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:30,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 03:49:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:32,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:49:32,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:32,298 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-03 03:49:32,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:32,298 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:32,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252248017] [2022-11-03 03:49:32,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252248017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:32,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:32,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:49:32,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986600578] [2022-11-03 03:49:32,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:32,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:49:32,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:32,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:49:32,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:32,302 INFO L87 Difference]: Start difference. First operand 33921 states and 46325 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:49:34,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:34,430 INFO L93 Difference]: Finished difference Result 67814 states and 92643 transitions. [2022-11-03 03:49:34,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:49:34,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 150 [2022-11-03 03:49:34,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:34,643 INFO L225 Difference]: With dead ends: 67814 [2022-11-03 03:49:34,643 INFO L226 Difference]: Without dead ends: 33985 [2022-11-03 03:49:34,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:34,763 INFO L413 NwaCegarLoop]: 2549 mSDtfsCounter, 1 mSDsluCounter, 2547 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5096 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:34,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5096 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:49:34,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33985 states. [2022-11-03 03:49:37,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33985 to 33953. [2022-11-03 03:49:37,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33953 states, 23537 states have (on average 1.26273526787611) internal successors, (29721), 23931 states have internal predecessors, (29721), 8304 states have call successors, (8304), 2142 states have call predecessors, (8304), 2109 states have return successors, (8332), 8039 states have call predecessors, (8332), 8300 states have call successors, (8332) [2022-11-03 03:49:37,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33953 states to 33953 states and 46357 transitions. [2022-11-03 03:49:37,389 INFO L78 Accepts]: Start accepts. Automaton has 33953 states and 46357 transitions. Word has length 150 [2022-11-03 03:49:37,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:37,389 INFO L495 AbstractCegarLoop]: Abstraction has 33953 states and 46357 transitions. [2022-11-03 03:49:37,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:49:37,390 INFO L276 IsEmpty]: Start isEmpty. Operand 33953 states and 46357 transitions. [2022-11-03 03:49:37,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 03:49:37,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:37,393 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 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] [2022-11-03 03:49:37,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:37,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:37,619 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:49:37,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:37,620 INFO L85 PathProgramCache]: Analyzing trace with hash -557096257, now seen corresponding path program 1 times [2022-11-03 03:49:37,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:37,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562577194] [2022-11-03 03:49:37,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:37,622 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:37,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:37,623 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:37,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 03:49:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:38,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 1145 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:49:38,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:38,996 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 76 proven. 1 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-03 03:49:38,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:49:39,179 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-03 03:49:39,180 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:39,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562577194] [2022-11-03 03:49:39,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562577194] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:49:39,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1709060767] [2022-11-03 03:49:39,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:39,181 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:49:39,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:49:39,184 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:49:39,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-03 03:49:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:40,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 1145 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:49:40,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:40,926 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-03 03:49:40,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:40,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1709060767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:40,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:49:40,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-03 03:49:40,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693737704] [2022-11-03 03:49:40,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:40,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:49:40,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:40,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:49:40,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:49:40,930 INFO L87 Difference]: Start difference. First operand 33953 states and 46357 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, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-03 03:49:44,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:44,717 INFO L93 Difference]: Finished difference Result 99429 states and 135952 transitions. [2022-11-03 03:49:44,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:49:44,717 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, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 152 [2022-11-03 03:49:44,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:45,058 INFO L225 Difference]: With dead ends: 99429 [2022-11-03 03:49:45,058 INFO L226 Difference]: Without dead ends: 65568 [2022-11-03 03:49:45,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:49:45,169 INFO L413 NwaCegarLoop]: 4685 mSDtfsCounter, 2400 mSDsluCounter, 2524 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2400 SdHoareTripleChecker+Valid, 7209 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:45,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2400 Valid, 7209 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:49:45,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65568 states. [2022-11-03 03:49:49,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65568 to 65564. [2022-11-03 03:49:49,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65564 states, 45574 states have (on average 1.2635274498617632) internal successors, (57584), 46200 states have internal predecessors, (57584), 15946 states have call successors, (15946), 4090 states have call predecessors, (15946), 4041 states have return successors, (16006), 15593 states have call predecessors, (16006), 15942 states have call successors, (16006) [2022-11-03 03:49:49,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65564 states to 65564 states and 89536 transitions. [2022-11-03 03:49:49,887 INFO L78 Accepts]: Start accepts. Automaton has 65564 states and 89536 transitions. Word has length 152 [2022-11-03 03:49:49,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:49,888 INFO L495 AbstractCegarLoop]: Abstraction has 65564 states and 89536 transitions. [2022-11-03 03:49:49,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-03 03:49:49,888 INFO L276 IsEmpty]: Start isEmpty. Operand 65564 states and 89536 transitions. [2022-11-03 03:49:49,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 03:49:49,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:49,893 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 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] [2022-11-03 03:49:49,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2022-11-03 03:49:50,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-03 03:49:50,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:50,307 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:49:50,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:50,308 INFO L85 PathProgramCache]: Analyzing trace with hash -416547647, now seen corresponding path program 1 times [2022-11-03 03:49:50,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:50,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436312917] [2022-11-03 03:49:50,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:50,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:50,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:50,311 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:50,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 03:49:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:51,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 1145 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:49:51,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:51,618 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 76 proven. 1 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-03 03:49:51,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:49:51,804 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-03 03:49:51,804 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:51,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436312917] [2022-11-03 03:49:51,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436312917] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:49:51,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1616729045] [2022-11-03 03:49:51,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:51,805 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:49:51,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:49:51,807 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:49:51,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-11-03 03:49:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:53,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 1145 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:49:53,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-11-03 03:49:54,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:54,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1616729045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:54,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:49:54,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 9 [2022-11-03 03:49:54,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565679036] [2022-11-03 03:49:54,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:54,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:49:54,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:54,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:49:54,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:49:54,145 INFO L87 Difference]: Start difference. First operand 65564 states and 89536 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-03 03:49:58,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:58,317 INFO L93 Difference]: Finished difference Result 65570 states and 89541 transitions. [2022-11-03 03:49:58,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:49:58,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 152 [2022-11-03 03:49:58,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:58,599 INFO L225 Difference]: With dead ends: 65570 [2022-11-03 03:49:58,599 INFO L226 Difference]: Without dead ends: 65568 [2022-11-03 03:49:58,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:49:58,629 INFO L413 NwaCegarLoop]: 2548 mSDtfsCounter, 2469 mSDsluCounter, 5083 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2470 SdHoareTripleChecker+Valid, 7631 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:58,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2470 Valid, 7631 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:49:58,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65568 states. [2022-11-03 03:50:03,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65568 to 65568. [2022-11-03 03:50:03,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65568 states, 45577 states have (on average 1.2635101037804155) internal successors, (57587), 46203 states have internal predecessors, (57587), 15946 states have call successors, (15946), 4091 states have call predecessors, (15946), 4042 states have return successors, (16006), 15593 states have call predecessors, (16006), 15942 states have call successors, (16006) [2022-11-03 03:50:03,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65568 states to 65568 states and 89539 transitions. [2022-11-03 03:50:03,573 INFO L78 Accepts]: Start accepts. Automaton has 65568 states and 89539 transitions. Word has length 152 [2022-11-03 03:50:03,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:03,574 INFO L495 AbstractCegarLoop]: Abstraction has 65568 states and 89539 transitions. [2022-11-03 03:50:03,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-03 03:50:03,574 INFO L276 IsEmpty]: Start isEmpty. Operand 65568 states and 89539 transitions. [2022-11-03 03:50:03,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-03 03:50:03,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:03,579 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:50:03,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 03:50:03,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2022-11-03 03:50:03,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:50:03,996 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:50:03,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:03,996 INFO L85 PathProgramCache]: Analyzing trace with hash -394663930, now seen corresponding path program 1 times [2022-11-03 03:50:03,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:50:03,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116202783] [2022-11-03 03:50:03,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:03,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:50:03,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:50:03,999 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:50:04,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525a742e-4450-4fc0-ae43-384a6fd431f3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process