./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_c0c42298-67a0-4661-9b82-b455cf3c0aaf/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/bin/utaipan-Q6hlc19bkW --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 adad89b7f673beaaf8bb114b70e1447440d8d3333aba6712cecf0b1e8decf472 --- 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-4e7fbc6 [2022-11-23 14:07:08,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:07:08,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:07:08,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:07:08,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:07:08,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:07:08,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:07:08,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:07:08,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:07:08,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:07:08,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:07:08,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:07:08,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:07:08,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:07:08,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:07:08,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:07:08,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:07:08,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:07:08,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:07:08,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:07:08,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:07:08,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:07:08,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:07:08,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:07:08,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:07:08,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:07:08,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:07:08,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:07:08,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:07:08,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:07:08,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:07:08,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:07:08,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:07:08,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:07:08,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:07:08,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:07:08,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:07:08,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:07:08,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:07:08,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:07:08,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:07:08,878 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:07:08,910 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:07:08,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:07:08,911 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:07:08,911 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:07:08,912 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:07:08,912 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:07:08,912 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:07:08,913 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:07:08,913 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:07:08,913 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:07:08,913 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:07:08,913 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:07:08,914 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:07:08,914 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:07:08,914 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:07:08,914 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:07:08,914 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:07:08,915 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:07:08,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:07:08,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:07:08,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:07:08,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:07:08,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:07:08,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:07:08,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:07:08,917 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:07:08,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:07:08,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:07:08,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:07:08,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:07:08,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:07:08,919 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:07:08,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:07:08,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:07:08,920 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:07:08,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:07:08,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:07:08,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:07:08,920 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_c0c42298-67a0-4661-9b82-b455cf3c0aaf/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adad89b7f673beaaf8bb114b70e1447440d8d3333aba6712cecf0b1e8decf472 [2022-11-23 14:07:09,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:07:09,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:07:09,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:07:09,222 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:07:09,222 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:07:09,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i [2022-11-23 14:07:12,236 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:07:12,919 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:07:12,920 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i [2022-11-23 14:07:12,966 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/bin/utaipan-Q6hlc19bkW/data/84f674de1/27bf5da8a439456d80783123c5f29bba/FLAGca8b9723f [2022-11-23 14:07:12,985 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/bin/utaipan-Q6hlc19bkW/data/84f674de1/27bf5da8a439456d80783123c5f29bba [2022-11-23 14:07:12,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:07:12,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:07:12,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:07:12,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:07:13,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:07:13,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:07:12" (1/1) ... [2022-11-23 14:07:13,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ef35cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:13, skipping insertion in model container [2022-11-23 14:07:13,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:07:12" (1/1) ... [2022-11-23 14:07:13,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:07:13,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:07:16,141 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295786,295799] [2022-11-23 14:07:16,147 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295952,295965] [2022-11-23 14:07:16,148 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296116,296129] [2022-11-23 14:07:16,148 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296281,296294] [2022-11-23 14:07:16,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:07:16,205 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:07:16,603 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295786,295799] [2022-11-23 14:07:16,603 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295952,295965] [2022-11-23 14:07:16,604 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296116,296129] [2022-11-23 14:07:16,604 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296281,296294] [2022-11-23 14:07:16,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:07:16,813 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:07:16,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:16 WrapperNode [2022-11-23 14:07:16,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:07:16,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:07:16,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:07:16,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:07:16,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:16" (1/1) ... [2022-11-23 14:07:16,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:16" (1/1) ... [2022-11-23 14:07:17,115 INFO L138 Inliner]: procedures = 396, calls = 1621, calls flagged for inlining = 229, calls inlined = 191, statements flattened = 4079 [2022-11-23 14:07:17,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:07:17,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:07:17,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:07:17,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:07:17,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:16" (1/1) ... [2022-11-23 14:07:17,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:16" (1/1) ... [2022-11-23 14:07:17,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:16" (1/1) ... [2022-11-23 14:07:17,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:16" (1/1) ... [2022-11-23 14:07:17,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:16" (1/1) ... [2022-11-23 14:07:17,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:16" (1/1) ... [2022-11-23 14:07:17,327 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:16" (1/1) ... [2022-11-23 14:07:17,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:16" (1/1) ... [2022-11-23 14:07:17,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:07:17,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:07:17,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:07:17,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:07:17,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:16" (1/1) ... [2022-11-23 14:07:17,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:07:17,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:07:17,417 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:07:17,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:07:17,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 14:07:17,470 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 14:07:17,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:07:17,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:07:17,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ks8851_driver_exit_14_2 [2022-11-23 14:07:17,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ks8851_driver_exit_14_2 [2022-11-23 14:07:17,470 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-23 14:07:17,470 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-23 14:07:17,471 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_resume [2022-11-23 14:07:17,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_resume [2022-11-23 14:07:17,471 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 14:07:17,471 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 14:07:17,471 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2022-11-23 14:07:17,471 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2022-11-23 14:07:17,471 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 14:07:17,472 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_net_stop [2022-11-23 14:07:17,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_net_stop [2022-11-23 14:07:17,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 14:07:17,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 14:07:17,472 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-23 14:07:17,473 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-23 14:07:17,473 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 14:07:17,474 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 14:07:17,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 14:07:17,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 14:07:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-23 14:07:17,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-23 14:07:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:07:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2022-11-23 14:07:17,475 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2022-11-23 14:07:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 14:07:17,476 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 14:07:17,476 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 14:07:17,476 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 14:07:17,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 14:07:17,476 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-23 14:07:17,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-23 14:07:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:07:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2022-11-23 14:07:17,477 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2022-11-23 14:07:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 14:07:17,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 14:07:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:07:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2022-11-23 14:07:17,478 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2022-11-23 14:07:17,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 14:07:17,478 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 14:07:17,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-23 14:07:17,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-23 14:07:17,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_ks8851_net [2022-11-23 14:07:17,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_ks8851_net [2022-11-23 14:07:17,478 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rdreg8 [2022-11-23 14:07:17,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rdreg8 [2022-11-23 14:07:17,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:07:17,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-23 14:07:17,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-23 14:07:17,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-23 14:07:17,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-23 14:07:17,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2022-11-23 14:07:17,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2022-11-23 14:07:17,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-23 14:07:17,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-23 14:07:17,486 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rdreg16 [2022-11-23 14:07:17,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rdreg16 [2022-11-23 14:07:17,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:07:17,487 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-23 14:07:17,488 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-23 14:07:17,488 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_probe [2022-11-23 14:07:17,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_probe [2022-11-23 14:07:17,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 14:07:17,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 14:07:17,489 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 14:07:17,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 14:07:17,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:07:17,490 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:07:17,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:07:17,491 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 14:07:17,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 14:07:17,491 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_put [2022-11-23 14:07:17,491 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_put [2022-11-23 14:07:17,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_ks8851_net [2022-11-23 14:07:17,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_ks8851_net [2022-11-23 14:07:17,492 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-23 14:07:17,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-23 14:07:17,492 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 14:07:17,492 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 14:07:17,493 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_write_mac_addr [2022-11-23 14:07:17,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_write_mac_addr [2022-11-23 14:07:17,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-23 14:07:17,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-23 14:07:17,494 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_suspend [2022-11-23 14:07:17,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_suspend [2022-11-23 14:07:17,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:07:17,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:07:17,495 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 14:07:17,495 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 14:07:17,495 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2022-11-23 14:07:17,495 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2022-11-23 14:07:17,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 14:07:17,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 14:07:17,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 14:07:17,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 14:07:17,496 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_net_open [2022-11-23 14:07:17,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_net_open [2022-11-23 14:07:17,498 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2022-11-23 14:07:17,500 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2022-11-23 14:07:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:07:17,501 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:07:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 14:07:17,502 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 14:07:17,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-23 14:07:17,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-23 14:07:17,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2022-11-23 14:07:17,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2022-11-23 14:07:17,508 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_set_rx_mode [2022-11-23 14:07:17,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_set_rx_mode [2022-11-23 14:07:17,508 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-23 14:07:17,509 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-23 14:07:17,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:07:17,509 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 14:07:17,509 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 14:07:17,509 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_set_powermode [2022-11-23 14:07:17,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_set_powermode [2022-11-23 14:07:17,509 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-23 14:07:17,510 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-23 14:07:17,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:07:17,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:07:17,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-23 14:07:17,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-23 14:07:17,510 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 14:07:17,510 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 14:07:17,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 14:07:17,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 14:07:17,511 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-23 14:07:17,511 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-23 14:07:17,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-23 14:07:17,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-23 14:07:17,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-23 14:07:17,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-23 14:07:17,512 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-23 14:07:17,512 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-23 14:07:17,512 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 14:07:17,512 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 14:07:17,512 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rx_1msg [2022-11-23 14:07:17,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rx_1msg [2022-11-23 14:07:17,512 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_get_eeprom_len [2022-11-23 14:07:17,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_get_eeprom_len [2022-11-23 14:07:17,513 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_soft_reset [2022-11-23 14:07:17,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_soft_reset [2022-11-23 14:07:17,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-23 14:07:17,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-23 14:07:17,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:07:17,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:07:17,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:07:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rdreg [2022-11-23 14:07:17,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rdreg [2022-11-23 14:07:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_nway_reset [2022-11-23 14:07:17,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_nway_reset [2022-11-23 14:07:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2022-11-23 14:07:17,514 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2022-11-23 14:07:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_remove [2022-11-23 14:07:17,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_remove [2022-11-23 14:07:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 14:07:17,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 14:07:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-23 14:07:17,515 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-23 14:07:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_wrreg16 [2022-11-23 14:07:17,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_wrreg16 [2022-11-23 14:07:17,516 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 14:07:17,516 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 14:07:17,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:07:17,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 14:07:17,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 14:07:18,344 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:07:18,350 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:07:19,597 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 14:07:22,023 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 14:07:22,243 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:07:23,374 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:07:23,374 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 14:07:23,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:07:23 BoogieIcfgContainer [2022-11-23 14:07:23,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:07:23,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:07:23,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:07:23,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:07:23,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:07:12" (1/3) ... [2022-11-23 14:07:23,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544d85ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:07:23, skipping insertion in model container [2022-11-23 14:07:23,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:16" (2/3) ... [2022-11-23 14:07:23,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544d85ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:07:23, skipping insertion in model container [2022-11-23 14:07:23,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:07:23" (3/3) ... [2022-11-23 14:07:23,393 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i [2022-11-23 14:07:23,414 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:07:23,415 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-23 14:07:23,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:07:23,523 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;@4e0a85f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:07:23,524 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-23 14:07:23,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 1118 states, 674 states have (on average 1.3293768545994065) internal successors, (896), 687 states have internal predecessors, (896), 366 states have call successors, (366), 78 states have call predecessors, (366), 77 states have return successors, (357), 356 states have call predecessors, (357), 357 states have call successors, (357) [2022-11-23 14:07:23,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-23 14:07:23,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:07:23,573 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:07:23,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:07:23,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:07:23,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1225836798, now seen corresponding path program 1 times [2022-11-23 14:07:23,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:07:23,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737710735] [2022-11-23 14:07:23,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:23,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:07:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:24,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2022-11-23 14:07:24,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:07:24,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737710735] [2022-11-23 14:07:24,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737710735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:07:24,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:07:24,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:07:24,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764534832] [2022-11-23 14:07:24,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:07:24,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:07:24,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:07:24,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:07:24,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:07:24,410 INFO L87 Difference]: Start difference. First operand has 1118 states, 674 states have (on average 1.3293768545994065) internal successors, (896), 687 states have internal predecessors, (896), 366 states have call successors, (366), 78 states have call predecessors, (366), 77 states have return successors, (357), 356 states have call predecessors, (357), 357 states have call successors, (357) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-23 14:07:29,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:07:29,074 INFO L93 Difference]: Finished difference Result 3137 states and 4728 transitions. [2022-11-23 14:07:29,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:07:29,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 191 [2022-11-23 14:07:29,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:07:29,103 INFO L225 Difference]: With dead ends: 3137 [2022-11-23 14:07:29,103 INFO L226 Difference]: Without dead ends: 2036 [2022-11-23 14:07:29,120 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 [2022-11-23 14:07:29,123 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 1412 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 2954 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:07:29,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 2954 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-23 14:07:29,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2022-11-23 14:07:29,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 2017. [2022-11-23 14:07:29,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2017 states, 1219 states have (on average 1.3264971287940934) internal successors, (1617), 1245 states have internal predecessors, (1617), 646 states have call successors, (646), 152 states have call predecessors, (646), 149 states have return successors, (684), 631 states have call predecessors, (684), 642 states have call successors, (684) [2022-11-23 14:07:29,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 2947 transitions. [2022-11-23 14:07:29,410 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 2947 transitions. Word has length 191 [2022-11-23 14:07:29,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:07:29,413 INFO L495 AbstractCegarLoop]: Abstraction has 2017 states and 2947 transitions. [2022-11-23 14:07:29,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-23 14:07:29,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 2947 transitions. [2022-11-23 14:07:29,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-23 14:07:29,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:07:29,435 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 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] [2022-11-23 14:07:29,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:07:29,436 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:07:29,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:07:29,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1861351673, now seen corresponding path program 1 times [2022-11-23 14:07:29,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:07:29,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846951881] [2022-11-23 14:07:29,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:29,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:07:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:29,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2022-11-23 14:07:29,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:07:29,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846951881] [2022-11-23 14:07:29,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846951881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:07:29,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:07:29,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:07:29,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243389667] [2022-11-23 14:07:29,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:07:29,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:07:29,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:07:29,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:07:29,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:07:29,807 INFO L87 Difference]: Start difference. First operand 2017 states and 2947 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-23 14:07:32,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:07:34,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:07:34,143 INFO L93 Difference]: Finished difference Result 5894 states and 8610 transitions. [2022-11-23 14:07:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:07:34,143 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 194 [2022-11-23 14:07:34,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:07:34,174 INFO L225 Difference]: With dead ends: 5894 [2022-11-23 14:07:34,175 INFO L226 Difference]: Without dead ends: 3912 [2022-11-23 14:07:34,188 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 [2022-11-23 14:07:34,190 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 1461 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 2862 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:07:34,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1461 Valid, 2862 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-23 14:07:34,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2022-11-23 14:07:34,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3908. [2022-11-23 14:07:34,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3908 states, 2380 states have (on average 1.3256302521008403) internal successors, (3155), 2424 states have internal predecessors, (3155), 1230 states have call successors, (1230), 300 states have call predecessors, (1230), 295 states have return successors, (1310), 1207 states have call predecessors, (1310), 1226 states have call successors, (1310) [2022-11-23 14:07:34,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3908 states to 3908 states and 5695 transitions. [2022-11-23 14:07:34,436 INFO L78 Accepts]: Start accepts. Automaton has 3908 states and 5695 transitions. Word has length 194 [2022-11-23 14:07:34,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:07:34,437 INFO L495 AbstractCegarLoop]: Abstraction has 3908 states and 5695 transitions. [2022-11-23 14:07:34,437 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-23 14:07:34,437 INFO L276 IsEmpty]: Start isEmpty. Operand 3908 states and 5695 transitions. [2022-11-23 14:07:34,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-23 14:07:34,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:07:34,442 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:07:34,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:07:34,442 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:07:34,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:07:34,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1364391516, now seen corresponding path program 1 times [2022-11-23 14:07:34,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:07:34,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985783154] [2022-11-23 14:07:34,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:34,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:07:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2022-11-23 14:07:34,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:07:34,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985783154] [2022-11-23 14:07:34,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985783154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:07:34,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:07:34,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:07:34,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110953020] [2022-11-23 14:07:34,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:07:34,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:07:34,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:07:34,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:07:34,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:07:34,902 INFO L87 Difference]: Start difference. First operand 3908 states and 5695 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-23 14:07:39,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:07:39,571 INFO L93 Difference]: Finished difference Result 11218 states and 16269 transitions. [2022-11-23 14:07:39,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:07:39,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 195 [2022-11-23 14:07:39,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:07:39,630 INFO L225 Difference]: With dead ends: 11218 [2022-11-23 14:07:39,630 INFO L226 Difference]: Without dead ends: 7345 [2022-11-23 14:07:39,653 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 [2022-11-23 14:07:39,656 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 1320 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:07:39,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 2818 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-23 14:07:39,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7345 states. [2022-11-23 14:07:40,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7345 to 7320. [2022-11-23 14:07:40,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7320 states, 4424 states have (on average 1.3049276672694394) internal successors, (5773), 4518 states have internal predecessors, (5773), 2308 states have call successors, (2308), 594 states have call predecessors, (2308), 585 states have return successors, (2408), 2255 states have call predecessors, (2408), 2304 states have call successors, (2408) [2022-11-23 14:07:40,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7320 states to 7320 states and 10489 transitions. [2022-11-23 14:07:40,188 INFO L78 Accepts]: Start accepts. Automaton has 7320 states and 10489 transitions. Word has length 195 [2022-11-23 14:07:40,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:07:40,190 INFO L495 AbstractCegarLoop]: Abstraction has 7320 states and 10489 transitions. [2022-11-23 14:07:40,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-23 14:07:40,190 INFO L276 IsEmpty]: Start isEmpty. Operand 7320 states and 10489 transitions. [2022-11-23 14:07:40,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-23 14:07:40,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:07:40,196 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:07:40,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:07:40,197 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:07:40,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:07:40,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1505901550, now seen corresponding path program 1 times [2022-11-23 14:07:40,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:07:40,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951741075] [2022-11-23 14:07:40,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:40,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:07:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:40,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2022-11-23 14:07:40,614 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:07:40,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951741075] [2022-11-23 14:07:40,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951741075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:07:40,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:07:40,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:07:40,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544898792] [2022-11-23 14:07:40,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:07:40,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:07:40,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:07:40,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:07:40,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:07:40,617 INFO L87 Difference]: Start difference. First operand 7320 states and 10489 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-23 14:07:44,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:07:45,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:07:46,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:07:46,307 INFO L93 Difference]: Finished difference Result 17654 states and 25223 transitions. [2022-11-23 14:07:46,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:07:46,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 196 [2022-11-23 14:07:46,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:07:46,383 INFO L225 Difference]: With dead ends: 17654 [2022-11-23 14:07:46,383 INFO L226 Difference]: Without dead ends: 10369 [2022-11-23 14:07:46,422 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 [2022-11-23 14:07:46,424 INFO L413 NwaCegarLoop]: 1609 mSDtfsCounter, 1414 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:07:46,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 2875 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-23 14:07:46,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10369 states. [2022-11-23 14:07:47,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10369 to 10344. [2022-11-23 14:07:47,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10344 states, 6230 states have (on average 1.2906902086677368) internal successors, (8041), 6380 states have internal predecessors, (8041), 3248 states have call successors, (3248), 876 states have call predecessors, (3248), 863 states have return successors, (3392), 3155 states have call predecessors, (3392), 3244 states have call successors, (3392) [2022-11-23 14:07:47,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10344 states to 10344 states and 14681 transitions. [2022-11-23 14:07:47,188 INFO L78 Accepts]: Start accepts. Automaton has 10344 states and 14681 transitions. Word has length 196 [2022-11-23 14:07:47,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:07:47,190 INFO L495 AbstractCegarLoop]: Abstraction has 10344 states and 14681 transitions. [2022-11-23 14:07:47,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-23 14:07:47,191 INFO L276 IsEmpty]: Start isEmpty. Operand 10344 states and 14681 transitions. [2022-11-23 14:07:47,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-23 14:07:47,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:07:47,196 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:07:47,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:07:47,197 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:07:47,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:07:47,197 INFO L85 PathProgramCache]: Analyzing trace with hash 717326826, now seen corresponding path program 1 times [2022-11-23 14:07:47,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:07:47,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175378266] [2022-11-23 14:07:47,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:47,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:07:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:47,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2022-11-23 14:07:47,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:07:47,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175378266] [2022-11-23 14:07:47,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175378266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:07:47,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:07:47,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:07:47,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479678131] [2022-11-23 14:07:47,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:07:47,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:07:47,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:07:47,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:07:47,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:07:47,484 INFO L87 Difference]: Start difference. First operand 10344 states and 14681 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, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-23 14:07:50,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:07:52,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:07:53,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:07:53,790 INFO L93 Difference]: Finished difference Result 27454 states and 38947 transitions. [2022-11-23 14:07:53,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:07:53,791 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, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 219 [2022-11-23 14:07:53,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:07:53,918 INFO L225 Difference]: With dead ends: 27454 [2022-11-23 14:07:53,919 INFO L226 Difference]: Without dead ends: 17145 [2022-11-23 14:07:53,975 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 [2022-11-23 14:07:53,976 INFO L413 NwaCegarLoop]: 1743 mSDtfsCounter, 1464 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:07:53,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 3014 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-23 14:07:54,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17145 states. [2022-11-23 14:07:54,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17145 to 17114. [2022-11-23 14:07:54,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17114 states, 10344 states have (on average 1.2876063418406807) internal successors, (13319), 10606 states have internal predecessors, (13319), 5314 states have call successors, (5314), 1482 states have call predecessors, (5314), 1453 states have return successors, (5546), 5139 states have call predecessors, (5546), 5310 states have call successors, (5546) [2022-11-23 14:07:55,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17114 states to 17114 states and 24179 transitions. [2022-11-23 14:07:55,246 INFO L78 Accepts]: Start accepts. Automaton has 17114 states and 24179 transitions. Word has length 219 [2022-11-23 14:07:55,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:07:55,247 INFO L495 AbstractCegarLoop]: Abstraction has 17114 states and 24179 transitions. [2022-11-23 14:07:55,247 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, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-23 14:07:55,247 INFO L276 IsEmpty]: Start isEmpty. Operand 17114 states and 24179 transitions. [2022-11-23 14:07:55,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-23 14:07:55,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:07:55,253 INFO L195 NwaCegarLoop]: trace histogram [19, 17, 17, 17, 17, 17, 17, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:07:55,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:07:55,253 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:07:55,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:07:55,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1463273485, now seen corresponding path program 1 times [2022-11-23 14:07:55,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:07:55,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902516746] [2022-11-23 14:07:55,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:55,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:07:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2022-11-23 14:07:55,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:07:55,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902516746] [2022-11-23 14:07:55,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902516746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:07:55,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:07:55,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:07:55,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241409845] [2022-11-23 14:07:55,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:07:55,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:07:55,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:07:55,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:07:55,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:07:55,559 INFO L87 Difference]: Start difference. First operand 17114 states and 24179 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-23 14:07:58,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:08:01,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:08:01,261 INFO L93 Difference]: Finished difference Result 43553 states and 61621 transitions. [2022-11-23 14:08:01,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:08:01,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 215 [2022-11-23 14:08:01,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:08:01,429 INFO L225 Difference]: With dead ends: 43553 [2022-11-23 14:08:01,429 INFO L226 Difference]: Without dead ends: 26474 [2022-11-23 14:08:01,501 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 [2022-11-23 14:08:01,502 INFO L413 NwaCegarLoop]: 1895 mSDtfsCounter, 1429 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 3162 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:08:01,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1429 Valid, 3162 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-23 14:08:01,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26474 states. [2022-11-23 14:08:03,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26474 to 26425. [2022-11-23 14:08:03,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26425 states, 16066 states have (on average 1.2873770695879496) internal successors, (20683), 16518 states have internal predecessors, (20683), 8124 states have call successors, (8124), 2279 states have call predecessors, (8124), 2232 states have return successors, (8468), 7803 states have call predecessors, (8468), 8120 states have call successors, (8468) [2022-11-23 14:08:03,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26425 states to 26425 states and 37275 transitions. [2022-11-23 14:08:03,401 INFO L78 Accepts]: Start accepts. Automaton has 26425 states and 37275 transitions. Word has length 215 [2022-11-23 14:08:03,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:08:03,402 INFO L495 AbstractCegarLoop]: Abstraction has 26425 states and 37275 transitions. [2022-11-23 14:08:03,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-23 14:08:03,402 INFO L276 IsEmpty]: Start isEmpty. Operand 26425 states and 37275 transitions. [2022-11-23 14:08:03,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-23 14:08:03,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:08:03,408 INFO L195 NwaCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:08:03,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:08:03,408 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:08:03,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:08:03,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1141548017, now seen corresponding path program 1 times [2022-11-23 14:08:03,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:08:03,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930190495] [2022-11-23 14:08:03,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:08:03,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:08:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:08:04,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1271 trivial. 0 not checked. [2022-11-23 14:08:04,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:08:04,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930190495] [2022-11-23 14:08:04,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930190495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:08:04,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:08:04,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:08:04,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702470868] [2022-11-23 14:08:04,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:08:04,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:08:04,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:08:04,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:08:04,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:08:04,710 INFO L87 Difference]: Start difference. First operand 26425 states and 37275 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-23 14:08:10,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:08:12,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:08:12,462 INFO L93 Difference]: Finished difference Result 26431 states and 37280 transitions. [2022-11-23 14:08:12,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:08:12,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 239 [2022-11-23 14:08:12,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:08:12,613 INFO L225 Difference]: With dead ends: 26431 [2022-11-23 14:08:12,613 INFO L226 Difference]: Without dead ends: 26429 [2022-11-23 14:08:12,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:08:12,630 INFO L413 NwaCegarLoop]: 1289 mSDtfsCounter, 1515 mSDsluCounter, 2573 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 3862 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:08:12,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 3862 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-23 14:08:12,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26429 states. [2022-11-23 14:08:14,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26429 to 26429. [2022-11-23 14:08:14,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26429 states, 16069 states have (on average 1.287323417760906) internal successors, (20686), 16521 states have internal predecessors, (20686), 8124 states have call successors, (8124), 2280 states have call predecessors, (8124), 2233 states have return successors, (8468), 7803 states have call predecessors, (8468), 8120 states have call successors, (8468) [2022-11-23 14:08:14,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26429 states to 26429 states and 37278 transitions. [2022-11-23 14:08:14,731 INFO L78 Accepts]: Start accepts. Automaton has 26429 states and 37278 transitions. Word has length 239 [2022-11-23 14:08:14,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:08:14,732 INFO L495 AbstractCegarLoop]: Abstraction has 26429 states and 37278 transitions. [2022-11-23 14:08:14,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-23 14:08:14,733 INFO L276 IsEmpty]: Start isEmpty. Operand 26429 states and 37278 transitions. [2022-11-23 14:08:14,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-23 14:08:14,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:08:14,738 INFO L195 NwaCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:08:14,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:08:14,739 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:08:14,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:08:14,739 INFO L85 PathProgramCache]: Analyzing trace with hash 916100242, now seen corresponding path program 1 times [2022-11-23 14:08:14,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:08:14,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873159482] [2022-11-23 14:08:14,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:08:14,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:08:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:08:16,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1271 trivial. 0 not checked. [2022-11-23 14:08:16,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:08:16,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873159482] [2022-11-23 14:08:16,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873159482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:08:16,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:08:16,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:08:16,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84287812] [2022-11-23 14:08:16,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:08:16,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:08:16,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:08:16,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:08:16,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:08:16,165 INFO L87 Difference]: Start difference. First operand 26429 states and 37278 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-23 14:08:20,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:08:21,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:08:23,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:08:25,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:08:25,022 INFO L93 Difference]: Finished difference Result 26435 states and 37283 transitions. [2022-11-23 14:08:25,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:08:25,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 244 [2022-11-23 14:08:25,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:08:25,149 INFO L225 Difference]: With dead ends: 26435 [2022-11-23 14:08:25,150 INFO L226 Difference]: Without dead ends: 26433 [2022-11-23 14:08:25,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:08:25,161 INFO L413 NwaCegarLoop]: 1292 mSDtfsCounter, 1510 mSDsluCounter, 2573 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 3865 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:08:25,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 3865 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-23 14:08:25,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26433 states. [2022-11-23 14:08:26,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26433 to 26433. [2022-11-23 14:08:26,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26433 states, 16072 states have (on average 1.2872697859631657) internal successors, (20689), 16524 states have internal predecessors, (20689), 8124 states have call successors, (8124), 2281 states have call predecessors, (8124), 2234 states have return successors, (8468), 7803 states have call predecessors, (8468), 8120 states have call successors, (8468) [2022-11-23 14:08:26,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26433 states to 26433 states and 37281 transitions. [2022-11-23 14:08:26,909 INFO L78 Accepts]: Start accepts. Automaton has 26433 states and 37281 transitions. Word has length 244 [2022-11-23 14:08:26,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:08:26,910 INFO L495 AbstractCegarLoop]: Abstraction has 26433 states and 37281 transitions. [2022-11-23 14:08:26,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-23 14:08:26,911 INFO L276 IsEmpty]: Start isEmpty. Operand 26433 states and 37281 transitions. [2022-11-23 14:08:26,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-23 14:08:26,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:08:26,917 INFO L195 NwaCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:08:26,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:08:26,918 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:08:26,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:08:26,918 INFO L85 PathProgramCache]: Analyzing trace with hash 169889199, now seen corresponding path program 1 times [2022-11-23 14:08:26,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:08:26,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497883244] [2022-11-23 14:08:26,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:08:26,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:08:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:08:28,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1279 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1275 trivial. 0 not checked. [2022-11-23 14:08:28,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:08:28,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497883244] [2022-11-23 14:08:28,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497883244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:08:28,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:08:28,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:08:28,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495127532] [2022-11-23 14:08:28,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:08:28,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:08:28,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:08:28,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:08:28,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:08:28,051 INFO L87 Difference]: Start difference. First operand 26433 states and 37281 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-23 14:08:36,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:08:36,137 INFO L93 Difference]: Finished difference Result 28558 states and 39474 transitions. [2022-11-23 14:08:36,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:08:36,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 249 [2022-11-23 14:08:36,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:08:36,261 INFO L225 Difference]: With dead ends: 28558 [2022-11-23 14:08:36,262 INFO L226 Difference]: Without dead ends: 28554 [2022-11-23 14:08:36,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:08:36,277 INFO L413 NwaCegarLoop]: 1316 mSDtfsCounter, 1229 mSDsluCounter, 2928 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 4244 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:08:36,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1230 Valid, 4244 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-23 14:08:36,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28554 states. [2022-11-23 14:08:38,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28554 to 28554. [2022-11-23 14:08:38,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28554 states, 17191 states have (on average 1.2770635797801175) internal successors, (21954), 17642 states have internal predecessors, (21954), 8586 states have call successors, (8586), 2822 states have call predecessors, (8586), 2774 states have return successors, (8930), 8265 states have call predecessors, (8930), 8582 states have call successors, (8930) [2022-11-23 14:08:38,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28554 states to 28554 states and 39470 transitions. [2022-11-23 14:08:38,580 INFO L78 Accepts]: Start accepts. Automaton has 28554 states and 39470 transitions. Word has length 249 [2022-11-23 14:08:38,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:08:38,581 INFO L495 AbstractCegarLoop]: Abstraction has 28554 states and 39470 transitions. [2022-11-23 14:08:38,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-23 14:08:38,582 INFO L276 IsEmpty]: Start isEmpty. Operand 28554 states and 39470 transitions. [2022-11-23 14:08:38,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-11-23 14:08:38,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:08:38,590 INFO L195 NwaCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:08:38,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:08:38,591 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:08:38,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:08:38,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1266296098, now seen corresponding path program 1 times [2022-11-23 14:08:38,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:08:38,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030360580] [2022-11-23 14:08:38,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:08:38,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:08:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:08:39,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1277 trivial. 0 not checked. [2022-11-23 14:08:39,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:08:39,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030360580] [2022-11-23 14:08:39,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030360580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:08:39,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:08:39,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:08:39,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672189449] [2022-11-23 14:08:39,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:08:39,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:08:39,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:08:39,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:08:39,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:08:39,481 INFO L87 Difference]: Start difference. First operand 28554 states and 39470 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-23 14:08:43,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:08:46,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:08:46,771 INFO L93 Difference]: Finished difference Result 28554 states and 39470 transitions. [2022-11-23 14:08:46,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:08:46,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 252 [2022-11-23 14:08:46,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:08:46,880 INFO L225 Difference]: With dead ends: 28554 [2022-11-23 14:08:46,880 INFO L226 Difference]: Without dead ends: 28275 [2022-11-23 14:08:46,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:08:46,899 INFO L413 NwaCegarLoop]: 1290 mSDtfsCounter, 1507 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 3862 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:08:46,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 3862 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-23 14:08:47,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28275 states. [2022-11-23 14:08:48,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28275 to 28275. [2022-11-23 14:08:48,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28275 states, 17131 states have (on average 1.2724300974840932) internal successors, (21798), 17486 states have internal predecessors, (21798), 8387 states have call successors, (8387), 2785 states have call predecessors, (8387), 2755 states have return successors, (8735), 8179 states have call predecessors, (8735), 8387 states have call successors, (8735) [2022-11-23 14:08:48,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28275 states to 28275 states and 38920 transitions. [2022-11-23 14:08:48,774 INFO L78 Accepts]: Start accepts. Automaton has 28275 states and 38920 transitions. Word has length 252 [2022-11-23 14:08:48,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:08:48,775 INFO L495 AbstractCegarLoop]: Abstraction has 28275 states and 38920 transitions. [2022-11-23 14:08:48,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-23 14:08:48,775 INFO L276 IsEmpty]: Start isEmpty. Operand 28275 states and 38920 transitions. [2022-11-23 14:08:48,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-11-23 14:08:48,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:08:48,786 INFO L195 NwaCegarLoop]: trace histogram [22, 17, 17, 17, 17, 17, 17, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:08:48,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 14:08:48,786 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:08:48,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:08:48,787 INFO L85 PathProgramCache]: Analyzing trace with hash 690906089, now seen corresponding path program 1 times [2022-11-23 14:08:48,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:08:48,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021415474] [2022-11-23 14:08:48,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:08:48,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:08:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:08:49,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1301 trivial. 0 not checked. [2022-11-23 14:08:49,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:08:49,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021415474] [2022-11-23 14:08:49,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021415474] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:08:49,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650467712] [2022-11-23 14:08:49,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:08:49,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:08:49,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:08:49,187 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:08:49,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:08:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:08:50,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 2561 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:08:50,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:08:50,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2022-11-23 14:08:50,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:08:50,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650467712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:08:50,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:08:50,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-23 14:08:50,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251986087] [2022-11-23 14:08:50,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:08:50,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:08:50,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:08:50,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:08:50,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:08:50,323 INFO L87 Difference]: Start difference. First operand 28275 states and 38920 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-23 14:08:55,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:08:58,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:08:58,427 INFO L93 Difference]: Finished difference Result 69604 states and 95876 transitions. [2022-11-23 14:08:58,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:08:58,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 257 [2022-11-23 14:08:58,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:08:58,602 INFO L225 Difference]: With dead ends: 69604 [2022-11-23 14:08:58,602 INFO L226 Difference]: Without dead ends: 41486 [2022-11-23 14:08:58,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:08:58,704 INFO L413 NwaCegarLoop]: 1714 mSDtfsCounter, 1403 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 2938 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:08:58,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1403 Valid, 2938 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-23 14:08:58,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41486 states. [2022-11-23 14:09:01,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41486 to 41450. [2022-11-23 14:09:01,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41450 states, 25121 states have (on average 1.2722821543728355) internal successors, (31961), 25662 states have internal predecessors, (31961), 12263 states have call successors, (12263), 4108 states have call predecessors, (12263), 4064 states have return successors, (12775), 11939 states have call predecessors, (12775), 12263 states have call successors, (12775) [2022-11-23 14:09:01,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41450 states to 41450 states and 56999 transitions. [2022-11-23 14:09:01,315 INFO L78 Accepts]: Start accepts. Automaton has 41450 states and 56999 transitions. Word has length 257 [2022-11-23 14:09:01,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:09:01,316 INFO L495 AbstractCegarLoop]: Abstraction has 41450 states and 56999 transitions. [2022-11-23 14:09:01,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-23 14:09:01,316 INFO L276 IsEmpty]: Start isEmpty. Operand 41450 states and 56999 transitions. [2022-11-23 14:09:01,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-11-23 14:09:01,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:09:01,325 INFO L195 NwaCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:09:01,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:09:01,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c42298-67a0-4661-9b82-b455cf3c0aaf/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:09:01,535 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:09:01,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:09:01,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1003314356, now seen corresponding path program 1 times [2022-11-23 14:09:01,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:09:01,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601094301] [2022-11-23 14:09:01,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:09:01,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:09:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:09:01,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1268 trivial. 0 not checked. [2022-11-23 14:09:01,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:09:01,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601094301] [2022-11-23 14:09:01,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601094301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:09:01,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:09:01,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:09:01,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733552865] [2022-11-23 14:09:01,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:09:01,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:09:01,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:09:01,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:09:01,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:09:01,815 INFO L87 Difference]: Start difference. First operand 41450 states and 56999 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-23 14:09:05,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:09:10,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:09:10,091 INFO L93 Difference]: Finished difference Result 102394 states and 140909 transitions. [2022-11-23 14:09:10,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:09:10,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 268 [2022-11-23 14:09:10,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:09:10,321 INFO L225 Difference]: With dead ends: 102394 [2022-11-23 14:09:10,321 INFO L226 Difference]: Without dead ends: 61101 [2022-11-23 14:09:10,436 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 [2022-11-23 14:09:10,437 INFO L413 NwaCegarLoop]: 1702 mSDtfsCounter, 1429 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 2942 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:09:10,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1429 Valid, 2942 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-23 14:09:10,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61101 states. [2022-11-23 14:09:14,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61101 to 61073. [2022-11-23 14:09:14,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61073 states, 37087 states have (on average 1.2718472780219483) internal successors, (47169), 37894 states have internal predecessors, (47169), 17974 states have call successors, (17974), 6074 states have call predecessors, (17974), 6010 states have return successors, (18730), 17488 states have call predecessors, (18730), 17974 states have call successors, (18730) [2022-11-23 14:09:14,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61073 states to 61073 states and 83873 transitions. [2022-11-23 14:09:14,749 INFO L78 Accepts]: Start accepts. Automaton has 61073 states and 83873 transitions. Word has length 268 [2022-11-23 14:09:14,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:09:14,750 INFO L495 AbstractCegarLoop]: Abstraction has 61073 states and 83873 transitions. [2022-11-23 14:09:14,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-23 14:09:14,750 INFO L276 IsEmpty]: Start isEmpty. Operand 61073 states and 83873 transitions. [2022-11-23 14:09:14,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-11-23 14:09:14,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:09:14,762 INFO L195 NwaCegarLoop]: trace histogram [23, 17, 17, 17, 17, 17, 17, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:09:14,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 14:09:14,762 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:09:14,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:09:14,763 INFO L85 PathProgramCache]: Analyzing trace with hash -780149392, now seen corresponding path program 1 times [2022-11-23 14:09:14,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:09:14,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030355494] [2022-11-23 14:09:14,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:09:14,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:09:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:09:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1360 trivial. 0 not checked. [2022-11-23 14:09:15,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:09:15,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030355494] [2022-11-23 14:09:15,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030355494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:09:15,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:09:15,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:09:15,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108829297] [2022-11-23 14:09:15,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:09:15,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:09:15,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:09:15,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:09:15,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:09:15,225 INFO L87 Difference]: Start difference. First operand 61073 states and 83873 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-23 14:09:20,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []