./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ebed12b86dce507000a7a0630996a9595573172c73db75fed69855441af252c1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:24:22,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:24:22,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:24:22,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:24:22,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:24:22,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:24:22,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:24:22,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:24:22,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:24:22,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:24:22,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:24:22,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:24:22,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:24:22,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:24:22,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:24:22,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:24:22,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:24:22,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:24:22,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:24:22,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:24:22,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:24:22,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:24:22,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:24:22,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:24:22,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:24:22,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:24:22,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:24:22,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:24:22,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:24:22,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:24:22,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:24:22,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:24:22,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:24:22,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:24:22,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:24:22,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:24:22,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:24:22,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:24:22,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:24:22,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:24:22,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:24:22,245 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:24:22,284 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:24:22,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:24:22,286 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:24:22,286 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:24:22,287 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:24:22,287 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:24:22,287 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:24:22,288 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:24:22,288 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:24:22,288 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:24:22,289 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:24:22,289 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:24:22,290 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:24:22,290 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:24:22,290 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:24:22,290 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:24:22,290 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:24:22,291 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:24:22,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:24:22,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:24:22,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:24:22,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:24:22,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:24:22,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:24:22,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:24:22,294 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:24:22,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:24:22,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:24:22,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:24:22,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:24:22,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:24:22,296 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:24:22,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:24:22,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:24:22,297 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:24:22,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:24:22,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:24:22,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:24:22,298 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_c314508d-fd15-497e-adc9-5d5e9ebffbef/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebed12b86dce507000a7a0630996a9595573172c73db75fed69855441af252c1 [2022-11-03 02:24:22,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:24:22,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:24:22,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:24:22,654 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:24:22,654 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:24:22,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2022-11-03 02:24:22,735 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/bin/utaipan-7li7fVZpFI/data/f95275cbb/e286ef9422154b6b8247049435421846/FLAG06fd3d787 [2022-11-03 02:24:23,700 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:24:23,701 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2022-11-03 02:24:23,759 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/bin/utaipan-7li7fVZpFI/data/f95275cbb/e286ef9422154b6b8247049435421846/FLAG06fd3d787 [2022-11-03 02:24:24,083 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/bin/utaipan-7li7fVZpFI/data/f95275cbb/e286ef9422154b6b8247049435421846 [2022-11-03 02:24:24,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:24:24,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:24:24,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:24:24,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:24:24,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:24:24,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:24:24" (1/1) ... [2022-11-03 02:24:24,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50a22dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:24, skipping insertion in model container [2022-11-03 02:24:24,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:24:24" (1/1) ... [2022-11-03 02:24:24,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:24:24,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:24:28,135 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402143,402156] [2022-11-03 02:24:28,138 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402312,402325] [2022-11-03 02:24:28,139 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402479,402492] [2022-11-03 02:24:28,139 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402647,402660] [2022-11-03 02:24:28,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:24:28,193 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:24:28,690 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402143,402156] [2022-11-03 02:24:28,691 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402312,402325] [2022-11-03 02:24:28,691 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402479,402492] [2022-11-03 02:24:28,691 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402647,402660] [2022-11-03 02:24:28,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:24:28,910 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:24:28,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:28 WrapperNode [2022-11-03 02:24:28,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:24:28,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:24:28,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:24:28,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:24:28,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:28" (1/1) ... [2022-11-03 02:24:29,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:28" (1/1) ... [2022-11-03 02:24:29,366 INFO L138 Inliner]: procedures = 553, calls = 3557, calls flagged for inlining = 272, calls inlined = 248, statements flattened = 8870 [2022-11-03 02:24:29,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:24:29,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:24:29,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:24:29,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:24:29,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:28" (1/1) ... [2022-11-03 02:24:29,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:28" (1/1) ... [2022-11-03 02:24:29,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:28" (1/1) ... [2022-11-03 02:24:29,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:28" (1/1) ... [2022-11-03 02:24:29,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:28" (1/1) ... [2022-11-03 02:24:29,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:28" (1/1) ... [2022-11-03 02:24:29,702 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:28" (1/1) ... [2022-11-03 02:24:29,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:28" (1/1) ... [2022-11-03 02:24:29,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:24:29,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:24:29,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:24:29,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:24:29,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:28" (1/1) ... [2022-11-03 02:24:29,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:24:29,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:24:29,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:24:29,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c314508d-fd15-497e-adc9-5d5e9ebffbef/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:24:29,961 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_evict_inode [2022-11-03 02:24:29,961 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_evict_inode [2022-11-03 02:24:29,961 INFO L130 BoogieDeclarations]: Found specification of procedure dput [2022-11-03 02:24:29,961 INFO L138 BoogieDeclarations]: Found implementation of procedure dput [2022-11-03 02:24:29,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:24:29,962 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:24:29,962 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_unlink [2022-11-03 02:24:29,962 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_unlink [2022-11-03 02:24:29,962 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_get_inode [2022-11-03 02:24:29,962 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_get_inode [2022-11-03 02:24:29,963 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-03 02:24:29,963 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-03 02:24:29,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:24:29,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:24:29,963 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_lseek [2022-11-03 02:24:29,963 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_lseek [2022-11-03 02:24:29,964 INFO L130 BoogieDeclarations]: Found specification of procedure do_expire_wait [2022-11-03 02:24:29,964 INFO L138 BoogieDeclarations]: Found implementation of procedure do_expire_wait [2022-11-03 02:24:29,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:24:29,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:24:29,964 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2022-11-03 02:24:29,964 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2022-11-03 02:24:29,965 INFO L130 BoogieDeclarations]: Found specification of procedure dget [2022-11-03 02:24:29,965 INFO L138 BoogieDeclarations]: Found implementation of procedure dget [2022-11-03 02:24:29,965 INFO L130 BoogieDeclarations]: Found specification of procedure lock_release [2022-11-03 02:24:29,965 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_release [2022-11-03 02:24:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure current_kernel_time [2022-11-03 02:24:29,966 INFO L138 BoogieDeclarations]: Found implementation of procedure current_kernel_time [2022-11-03 02:24:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_indirect [2022-11-03 02:24:29,966 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_indirect [2022-11-03 02:24:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure new_encode_dev [2022-11-03 02:24:29,966 INFO L138 BoogieDeclarations]: Found implementation of procedure new_encode_dev [2022-11-03 02:24:29,967 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_clear_managed [2022-11-03 02:24:29,967 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_clear_managed [2022-11-03 02:24:29,967 INFO L130 BoogieDeclarations]: Found specification of procedure from_kgid_munged [2022-11-03 02:24:29,967 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kgid_munged [2022-11-03 02:24:29,967 INFO L130 BoogieDeclarations]: Found specification of procedure follow_down_one [2022-11-03 02:24:29,967 INFO L138 BoogieDeclarations]: Found implementation of procedure follow_down_one [2022-11-03 02:24:29,968 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_show_options [2022-11-03 02:24:29,968 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_show_options [2022-11-03 02:24:29,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_48 [2022-11-03 02:24:29,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_48 [2022-11-03 02:24:29,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_57 [2022-11-03 02:24:29,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_57 [2022-11-03 02:24:29,970 INFO L130 BoogieDeclarations]: Found specification of procedure __autofs4_add_expiring [2022-11-03 02:24:29,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __autofs4_add_expiring [2022-11-03 02:24:29,971 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 02:24:29,971 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_wait [2022-11-03 02:24:29,971 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_wait [2022-11-03 02:24:29,971 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl [2022-11-03 02:24:29,972 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl [2022-11-03 02:24:29,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:24:29,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:24:29,973 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-11-03 02:24:29,973 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-11-03 02:24:29,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:24:29,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:24:29,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:24:29,973 INFO L130 BoogieDeclarations]: Found specification of procedure d_count [2022-11-03 02:24:29,974 INFO L138 BoogieDeclarations]: Found implementation of procedure d_count [2022-11-03 02:24:29,974 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-03 02:24:29,974 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-03 02:24:29,974 INFO L130 BoogieDeclarations]: Found specification of procedure from_kuid_munged [2022-11-03 02:24:29,974 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kuid_munged [2022-11-03 02:24:29,974 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 02:24:29,975 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 02:24:29,975 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:24:29,976 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:24:29,976 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2022-11-03 02:24:29,976 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2022-11-03 02:24:29,976 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_oz_mode [2022-11-03 02:24:29,976 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_oz_mode [2022-11-03 02:24:29,976 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_do_expire_multi [2022-11-03 02:24:29,977 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_do_expire_multi [2022-11-03 02:24:29,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_NOT_ARG_SIGN [2022-11-03 02:24:29,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_NOT_ARG_SIGN [2022-11-03 02:24:29,977 INFO L130 BoogieDeclarations]: Found specification of procedure __task_pid_nr_ns [2022-11-03 02:24:29,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __task_pid_nr_ns [2022-11-03 02:24:29,978 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:24:29,978 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:24:29,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_54 [2022-11-03 02:24:29,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_54 [2022-11-03 02:24:29,979 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_sbi [2022-11-03 02:24:29,980 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_sbi [2022-11-03 02:24:29,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:24:29,980 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-03 02:24:29,981 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-03 02:24:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_siglock_of_sighand_struct [2022-11-03 02:24:29,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_siglock_of_sighand_struct [2022-11-03 02:24:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_new_ino [2022-11-03 02:24:29,981 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_new_ino [2022-11-03 02:24:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure simple_empty [2022-11-03 02:24:29,982 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_empty [2022-11-03 02:24:29,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:24:29,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:24:29,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:24:29,982 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_can_expire [2022-11-03 02:24:29,983 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_can_expire [2022-11-03 02:24:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_ino [2022-11-03 02:24:29,983 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_ino [2022-11-03 02:24:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:24:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure fget [2022-11-03 02:24:29,984 INFO L138 BoogieDeclarations]: Found implementation of procedure fget [2022-11-03 02:24:29,984 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_open [2022-11-03 02:24:29,985 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_open [2022-11-03 02:24:29,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:24:29,988 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:24:29,988 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_rmdir [2022-11-03 02:24:29,988 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_rmdir [2022-11-03 02:24:29,988 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount [2022-11-03 02:24:29,989 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount [2022-11-03 02:24:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl_exit [2022-11-03 02:24:29,990 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl_exit [2022-11-03 02:24:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-11-03 02:24:29,996 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-11-03 02:24:29,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 02:24:29,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 02:24:29,996 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_open [2022-11-03 02:24:29,996 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_open [2022-11-03 02:24:29,997 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 02:24:29,997 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 02:24:29,997 INFO L130 BoogieDeclarations]: Found specification of procedure clear_nlink [2022-11-03 02:24:29,997 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_nlink [2022-11-03 02:24:29,997 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_trigger [2022-11-03 02:24:29,997 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_trigger [2022-11-03 02:24:29,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:24:29,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:24:29,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:24:29,998 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2022-11-03 02:24:29,998 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2022-11-03 02:24:29,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 02:24:29,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 02:24:29,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 02:24:29,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 02:24:29,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2022-11-03 02:24:29,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2022-11-03 02:24:29,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-03 02:24:29,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-03 02:24:29,999 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2022-11-03 02:24:29,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-03 02:24:30,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-03 02:24:30,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:24:30,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:24:30,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:24:30,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:24:30,000 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:24:30,001 INFO L130 BoogieDeclarations]: Found specification of procedure simple_positive [2022-11-03 02:24:30,001 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_positive [2022-11-03 02:24:30,001 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-03 02:24:30,001 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-03 02:24:30,001 INFO L130 BoogieDeclarations]: Found specification of procedure path_get [2022-11-03 02:24:30,001 INFO L138 BoogieDeclarations]: Found implementation of procedure path_get [2022-11-03 02:24:30,001 INFO L130 BoogieDeclarations]: Found specification of procedure dget_dlock [2022-11-03 02:24:30,002 INFO L138 BoogieDeclarations]: Found implementation of procedure dget_dlock [2022-11-03 02:24:30,002 INFO L130 BoogieDeclarations]: Found specification of procedure d_lookup [2022-11-03 02:24:30,002 INFO L138 BoogieDeclarations]: Found implementation of procedure d_lookup [2022-11-03 02:24:30,002 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-03 02:24:30,002 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-03 02:24:30,002 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-03 02:24:30,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-03 02:24:30,003 INFO L130 BoogieDeclarations]: Found specification of procedure recalc_sigpending [2022-11-03 02:24:30,003 INFO L138 BoogieDeclarations]: Found implementation of procedure recalc_sigpending [2022-11-03 02:24:30,003 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-03 02:24:30,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-03 02:24:30,003 INFO L130 BoogieDeclarations]: Found specification of procedure d_drop [2022-11-03 02:24:30,003 INFO L138 BoogieDeclarations]: Found implementation of procedure d_drop [2022-11-03 02:24:30,003 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_mount [2022-11-03 02:24:30,004 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_mount [2022-11-03 02:24:30,004 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_indirect [2022-11-03 02:24:30,004 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_indirect [2022-11-03 02:24:30,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:24:30,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:24:30,004 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_wait [2022-11-03 02:24:30,004 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_wait [2022-11-03 02:24:30,005 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:24:30,005 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:24:30,005 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl [2022-11-03 02:24:30,005 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl [2022-11-03 02:24:30,007 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-03 02:24:30,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-03 02:24:30,007 INFO L130 BoogieDeclarations]: Found specification of procedure complete_all [2022-11-03 02:24:30,007 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_all [2022-11-03 02:24:30,007 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2022-11-03 02:24:30,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2022-11-03 02:24:30,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:24:30,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:24:30,008 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait_release [2022-11-03 02:24:30,008 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait_release [2022-11-03 02:24:30,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:24:30,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:24:30,008 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl_unlocked [2022-11-03 02:24:30,008 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl_unlocked [2022-11-03 02:24:30,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:24:30,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:24:30,009 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2022-11-03 02:24:30,009 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2022-11-03 02:24:30,009 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 02:24:30,009 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 02:24:30,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2022-11-03 02:24:30,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2022-11-03 02:24:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_compat_ioctl [2022-11-03 02:24:30,010 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_compat_ioctl [2022-11-03 02:24:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure read_seqretry [2022-11-03 02:24:30,010 INFO L138 BoogieDeclarations]: Found implementation of procedure read_seqretry [2022-11-03 02:24:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2022-11-03 02:24:30,010 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2022-11-03 02:24:30,011 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-03 02:24:30,011 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-03 02:24:30,011 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_readdir [2022-11-03 02:24:30,011 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_readdir [2022-11-03 02:24:30,011 INFO L130 BoogieDeclarations]: Found specification of procedure d_instantiate [2022-11-03 02:24:30,011 INFO L138 BoogieDeclarations]: Found implementation of procedure d_instantiate [2022-11-03 02:24:30,011 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:24:30,012 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:24:30,012 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount_tree [2022-11-03 02:24:30,012 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount_tree [2022-11-03 02:24:30,012 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 02:24:30,012 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 02:24:30,012 INFO L130 BoogieDeclarations]: Found specification of procedure simple_statfs [2022-11-03 02:24:30,012 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_statfs [2022-11-03 02:24:30,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:24:30,013 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:24:30,013 INFO L130 BoogieDeclarations]: Found specification of procedure get_task_pid [2022-11-03 02:24:30,013 INFO L138 BoogieDeclarations]: Found implementation of procedure get_task_pid [2022-11-03 02:24:30,013 INFO L130 BoogieDeclarations]: Found specification of procedure path_put [2022-11-03 02:24:30,013 INFO L138 BoogieDeclarations]: Found implementation of procedure path_put [2022-11-03 02:24:30,013 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_busy [2022-11-03 02:24:30,014 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_busy [2022-11-03 02:24:30,014 INFO L130 BoogieDeclarations]: Found specification of procedure d_unhashed [2022-11-03 02:24:30,014 INFO L138 BoogieDeclarations]: Found implementation of procedure d_unhashed [2022-11-03 02:24:30,014 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-03 02:24:30,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-03 02:24:30,019 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_kill_sb [2022-11-03 02:24:30,019 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_kill_sb [2022-11-03 02:24:30,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:24:30,019 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:24:30,019 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:24:30,019 INFO L130 BoogieDeclarations]: Found specification of procedure generic_read_dir [2022-11-03 02:24:30,020 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_read_dir [2022-11-03 02:24:30,020 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2022-11-03 02:24:30,020 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2022-11-03 02:24:30,021 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_set_managed [2022-11-03 02:24:30,022 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_set_managed [2022-11-03 02:24:30,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:24:30,022 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2022-11-03 02:24:30,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2022-11-03 02:24:30,022 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2022-11-03 02:24:30,022 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2022-11-03 02:24:30,022 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-03 02:24:30,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-03 02:24:30,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:24:30,023 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-03 02:24:30,023 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-03 02:24:30,023 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 02:24:30,023 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 02:24:30,023 INFO L130 BoogieDeclarations]: Found specification of procedure find_autofs_mount [2022-11-03 02:24:30,023 INFO L138 BoogieDeclarations]: Found implementation of procedure find_autofs_mount [2022-11-03 02:24:30,024 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 02:24:30,024 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 02:24:30,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:24:30,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:24:30,024 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_close [2022-11-03 02:24:30,024 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_close [2022-11-03 02:24:30,024 INFO L130 BoogieDeclarations]: Found specification of procedure ns_of_pid [2022-11-03 02:24:30,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_of_pid [2022-11-03 02:24:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 02:24:30,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 02:24:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_55 [2022-11-03 02:24:30,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_55 [2022-11-03 02:24:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 02:24:30,025 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 02:24:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_clean_ino [2022-11-03 02:24:30,026 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_clean_ino [2022-11-03 02:24:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_49 [2022-11-03 02:24:30,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_49 [2022-11-03 02:24:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_77 [2022-11-03 02:24:30,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_77 [2022-11-03 02:24:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure kern_path_mountpoint [2022-11-03 02:24:30,026 INFO L138 BoogieDeclarations]: Found implementation of procedure kern_path_mountpoint [2022-11-03 02:24:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure get_next_positive_dentry [2022-11-03 02:24:30,027 INFO L138 BoogieDeclarations]: Found implementation of procedure get_next_positive_dentry [2022-11-03 02:24:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:24:30,027 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:24:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure __managed_dentry_set_managed [2022-11-03 02:24:30,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __managed_dentry_set_managed [2022-11-03 02:24:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait [2022-11-03 02:24:30,028 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait [2022-11-03 02:24:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_find_wait [2022-11-03 02:24:30,028 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_find_wait [2022-11-03 02:24:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-11-03 02:24:30,028 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-11-03 02:24:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2022-11-03 02:24:30,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2022-11-03 02:24:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:24:30,029 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_release [2022-11-03 02:24:30,029 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_release [2022-11-03 02:24:30,029 INFO L130 BoogieDeclarations]: Found specification of procedure task_pgrp_nr [2022-11-03 02:24:30,029 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pgrp_nr [2022-11-03 02:24:30,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:24:30,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:24:30,029 INFO L130 BoogieDeclarations]: Found specification of procedure uid_eq [2022-11-03 02:24:30,030 INFO L138 BoogieDeclarations]: Found implementation of procedure uid_eq [2022-11-03 02:24:30,030 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_symlink [2022-11-03 02:24:30,030 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_symlink [2022-11-03 02:24:30,030 INFO L130 BoogieDeclarations]: Found specification of procedure __kgid_val [2022-11-03 02:24:30,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __kgid_val [2022-11-03 02:24:30,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_78 [2022-11-03 02:24:30,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_78 [2022-11-03 02:24:30,030 INFO L130 BoogieDeclarations]: Found specification of procedure lock_acquire [2022-11-03 02:24:30,031 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_acquire [2022-11-03 02:24:30,031 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-03 02:24:30,031 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-03 02:24:30,031 INFO L130 BoogieDeclarations]: Found specification of procedure d_mountpoint [2022-11-03 02:24:30,031 INFO L138 BoogieDeclarations]: Found implementation of procedure d_mountpoint [2022-11-03 02:24:30,031 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-03 02:24:30,031 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-03 02:24:30,032 INFO L130 BoogieDeclarations]: Found specification of procedure have_submounts [2022-11-03 02:24:30,032 INFO L138 BoogieDeclarations]: Found implementation of procedure have_submounts [2022-11-03 02:24:30,032 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-03 02:24:30,032 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-03 02:24:30,032 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-03 02:24:30,032 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-03 02:24:30,032 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 02:24:30,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 02:24:30,033 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 02:24:30,033 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 02:24:30,033 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_prepare_pipe [2022-11-03 02:24:30,033 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_prepare_pipe [2022-11-03 02:24:30,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:24:30,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:24:30,033 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_del_active [2022-11-03 02:24:30,034 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_del_active [2022-11-03 02:24:30,034 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 02:24:30,034 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 02:24:30,034 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:24:30,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:24:30,034 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2022-11-03 02:24:30,034 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2022-11-03 02:24:30,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:24:30,035 INFO L130 BoogieDeclarations]: Found specification of procedure d_add [2022-11-03 02:24:30,035 INFO L138 BoogieDeclarations]: Found implementation of procedure d_add [2022-11-03 02:24:30,035 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_catatonic_mode [2022-11-03 02:24:30,035 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_catatonic_mode [2022-11-03 02:24:30,035 INFO L130 BoogieDeclarations]: Found specification of procedure gid_eq [2022-11-03 02:24:30,035 INFO L138 BoogieDeclarations]: Found implementation of procedure gid_eq [2022-11-03 02:24:30,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:24:30,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:24:30,036 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-03 02:24:30,036 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_relax [2022-11-03 02:24:30,036 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_relax [2022-11-03 02:24:31,355 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:24:31,362 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:24:31,688 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:24:32,487 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint switch_break: call ULTIMATE.dealloc(~#descriptor~12#1.base, ~#descriptor~12#1.offset);havoc ~#descriptor~12#1.base, ~#descriptor~12#1.offset; [2022-11-03 02:24:40,596 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 02:24:40,845 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:24:42,724 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:24:42,724 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-03 02:24:42,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:24:42 BoogieIcfgContainer [2022-11-03 02:24:42,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:24:42,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:24:42,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:24:42,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:24:42,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:24:24" (1/3) ... [2022-11-03 02:24:42,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6723fe39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:24:42, skipping insertion in model container [2022-11-03 02:24:42,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:28" (2/3) ... [2022-11-03 02:24:42,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6723fe39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:24:42, skipping insertion in model container [2022-11-03 02:24:42,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:24:42" (3/3) ... [2022-11-03 02:24:42,742 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2022-11-03 02:24:42,765 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:24:42,765 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-03 02:24:42,895 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:24:42,902 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;@5c84c578, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:24:42,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-03 02:24:42,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 2633 states, 1548 states have (on average 1.3152454780361758) internal successors, (2036), 1601 states have internal predecessors, (2036), 917 states have call successors, (917), 165 states have call predecessors, (917), 164 states have return successors, (906), 900 states have call predecessors, (906), 906 states have call successors, (906) [2022-11-03 02:24:42,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2022-11-03 02:24:42,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:42,970 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:42,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:24:42,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:42,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1239138158, now seen corresponding path program 1 times [2022-11-03 02:24:42,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:42,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512780662] [2022-11-03 02:24:42,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:42,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:44,484 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2022-11-03 02:24:44,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:44,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512780662] [2022-11-03 02:24:44,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512780662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:44,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:44,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:24:44,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344660741] [2022-11-03 02:24:44,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:44,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:24:44,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:44,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:24:44,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:24:44,541 INFO L87 Difference]: Start difference. First operand has 2633 states, 1548 states have (on average 1.3152454780361758) internal successors, (2036), 1601 states have internal predecessors, (2036), 917 states have call successors, (917), 165 states have call predecessors, (917), 164 states have return successors, (906), 900 states have call predecessors, (906), 906 states have call successors, (906) Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-03 02:24:47,253 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 [] [2022-11-03 02:24:49,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:51,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:53,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:56,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:56,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:56,974 INFO L93 Difference]: Finished difference Result 7432 states and 11197 transitions. [2022-11-03 02:24:56,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:24:56,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 465 [2022-11-03 02:24:56,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:57,032 INFO L225 Difference]: With dead ends: 7432 [2022-11-03 02:24:57,033 INFO L226 Difference]: Without dead ends: 4872 [2022-11-03 02:24:57,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:24:57,071 INFO L413 NwaCegarLoop]: 4810 mSDtfsCounter, 3328 mSDsluCounter, 3763 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 11 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3330 SdHoareTripleChecker+Valid, 8201 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:57,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3330 Valid, 8201 Invalid, 901 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 886 Invalid, 4 Unknown, 0 Unchecked, 11.8s Time] [2022-11-03 02:24:57,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4872 states. [2022-11-03 02:24:57,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4872 to 4866. [2022-11-03 02:24:57,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4866 states, 2875 states have (on average 1.3071304347826087) internal successors, (3758), 2967 states have internal predecessors, (3758), 1668 states have call successors, (1668), 320 states have call predecessors, (1668), 319 states have return successors, (1666), 1653 states have call predecessors, (1666), 1664 states have call successors, (1666) [2022-11-03 02:24:57,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4866 states to 4866 states and 7092 transitions. [2022-11-03 02:24:57,515 INFO L78 Accepts]: Start accepts. Automaton has 4866 states and 7092 transitions. Word has length 465 [2022-11-03 02:24:57,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:57,521 INFO L495 AbstractCegarLoop]: Abstraction has 4866 states and 7092 transitions. [2022-11-03 02:24:57,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-03 02:24:57,522 INFO L276 IsEmpty]: Start isEmpty. Operand 4866 states and 7092 transitions. [2022-11-03 02:24:57,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2022-11-03 02:24:57,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:57,545 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:57,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:24:57,546 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:24:57,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:57,547 INFO L85 PathProgramCache]: Analyzing trace with hash 238087791, now seen corresponding path program 1 times [2022-11-03 02:24:57,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:57,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193122627] [2022-11-03 02:24:57,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:57,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:58,348 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2022-11-03 02:24:58,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:58,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193122627] [2022-11-03 02:24:58,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193122627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:58,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:58,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:24:58,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181127530] [2022-11-03 02:24:58,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:58,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:24:58,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:58,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:24:58,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:24:58,353 INFO L87 Difference]: Start difference. First operand 4866 states and 7092 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-03 02:25:00,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:02,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:05,835 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 [] [2022-11-03 02:25:07,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:07,070 INFO L93 Difference]: Finished difference Result 11812 states and 17184 transitions. [2022-11-03 02:25:07,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:07,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 480 [2022-11-03 02:25:07,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:07,135 INFO L225 Difference]: With dead ends: 11812 [2022-11-03 02:25:07,135 INFO L226 Difference]: Without dead ends: 7035 [2022-11-03 02:25:07,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:07,170 INFO L413 NwaCegarLoop]: 4776 mSDtfsCounter, 3227 mSDsluCounter, 3755 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3231 SdHoareTripleChecker+Valid, 8157 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:07,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3231 Valid, 8157 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 911 Invalid, 3 Unknown, 0 Unchecked, 8.3s Time] [2022-11-03 02:25:07,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7035 states. [2022-11-03 02:25:07,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7035 to 7008. [2022-11-03 02:25:07,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7008 states, 4151 states have (on average 1.3054685617923392) internal successors, (5419), 4287 states have internal predecessors, (5419), 2374 states have call successors, (2374), 480 states have call predecessors, (2374), 479 states have return successors, (2380), 2350 states have call predecessors, (2380), 2370 states have call successors, (2380) [2022-11-03 02:25:07,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7008 states to 7008 states and 10173 transitions. [2022-11-03 02:25:07,707 INFO L78 Accepts]: Start accepts. Automaton has 7008 states and 10173 transitions. Word has length 480 [2022-11-03 02:25:07,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:07,709 INFO L495 AbstractCegarLoop]: Abstraction has 7008 states and 10173 transitions. [2022-11-03 02:25:07,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-03 02:25:07,710 INFO L276 IsEmpty]: Start isEmpty. Operand 7008 states and 10173 transitions. [2022-11-03 02:25:07,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2022-11-03 02:25:07,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:07,725 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:07,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:25:07,725 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:25:07,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:07,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1914525451, now seen corresponding path program 1 times [2022-11-03 02:25:07,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:07,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434063279] [2022-11-03 02:25:07,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:07,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:08,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2022-11-03 02:25:08,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:08,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434063279] [2022-11-03 02:25:08,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434063279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:08,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:08,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:08,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826115229] [2022-11-03 02:25:08,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:08,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:08,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:08,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:08,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:08,300 INFO L87 Difference]: Start difference. First operand 7008 states and 10173 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-03 02:25:11,498 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 [] [2022-11-03 02:25:13,693 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 [] [2022-11-03 02:25:15,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:15,079 INFO L93 Difference]: Finished difference Result 17921 states and 25954 transitions. [2022-11-03 02:25:15,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:15,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 481 [2022-11-03 02:25:15,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:15,161 INFO L225 Difference]: With dead ends: 17921 [2022-11-03 02:25:15,161 INFO L226 Difference]: Without dead ends: 11002 [2022-11-03 02:25:15,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:15,203 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 3100 mSDsluCounter, 3756 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3102 SdHoareTripleChecker+Valid, 7574 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:15,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3102 Valid, 7574 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 836 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-11-03 02:25:15,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11002 states. [2022-11-03 02:25:15,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11002 to 10975. [2022-11-03 02:25:15,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10975 states, 6495 states have (on average 1.3010007698229407) internal successors, (8450), 6717 states have internal predecessors, (8450), 3691 states have call successors, (3691), 786 states have call predecessors, (3691), 785 states have return successors, (3711), 3649 states have call predecessors, (3711), 3687 states have call successors, (3711) [2022-11-03 02:25:15,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10975 states to 10975 states and 15852 transitions. [2022-11-03 02:25:15,993 INFO L78 Accepts]: Start accepts. Automaton has 10975 states and 15852 transitions. Word has length 481 [2022-11-03 02:25:15,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:15,995 INFO L495 AbstractCegarLoop]: Abstraction has 10975 states and 15852 transitions. [2022-11-03 02:25:15,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-03 02:25:15,995 INFO L276 IsEmpty]: Start isEmpty. Operand 10975 states and 15852 transitions. [2022-11-03 02:25:16,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2022-11-03 02:25:16,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:16,006 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:16,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:25:16,007 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:25:16,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:16,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1491294399, now seen corresponding path program 1 times [2022-11-03 02:25:16,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:16,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667237768] [2022-11-03 02:25:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:16,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:16,553 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2022-11-03 02:25:16,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:16,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667237768] [2022-11-03 02:25:16,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667237768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:16,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:16,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:16,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911727624] [2022-11-03 02:25:16,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:16,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:16,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:16,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:16,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:16,558 INFO L87 Difference]: Start difference. First operand 10975 states and 15852 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-03 02:25:19,703 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 [] [2022-11-03 02:25:21,959 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 [] [2022-11-03 02:25:23,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:23,231 INFO L93 Difference]: Finished difference Result 29403 states and 42342 transitions. [2022-11-03 02:25:23,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:23,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 480 [2022-11-03 02:25:23,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:23,357 INFO L225 Difference]: With dead ends: 29403 [2022-11-03 02:25:23,358 INFO L226 Difference]: Without dead ends: 18517 [2022-11-03 02:25:23,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:23,418 INFO L413 NwaCegarLoop]: 4142 mSDtfsCounter, 2996 mSDsluCounter, 3789 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3000 SdHoareTripleChecker+Valid, 7551 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:23,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3000 Valid, 7551 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 806 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2022-11-03 02:25:23,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18517 states. [2022-11-03 02:25:24,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18517 to 18482. [2022-11-03 02:25:24,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18482 states, 10925 states have (on average 1.2983066361556064) internal successors, (14184), 11285 states have internal predecessors, (14184), 6163 states have call successors, (6163), 1391 states have call predecessors, (6163), 1390 states have return successors, (6211), 6092 states have call predecessors, (6211), 6159 states have call successors, (6211) [2022-11-03 02:25:24,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18482 states to 18482 states and 26558 transitions. [2022-11-03 02:25:24,598 INFO L78 Accepts]: Start accepts. Automaton has 18482 states and 26558 transitions. Word has length 480 [2022-11-03 02:25:24,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:24,600 INFO L495 AbstractCegarLoop]: Abstraction has 18482 states and 26558 transitions. [2022-11-03 02:25:24,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-03 02:25:24,601 INFO L276 IsEmpty]: Start isEmpty. Operand 18482 states and 26558 transitions. [2022-11-03 02:25:24,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-11-03 02:25:24,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:24,612 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:24,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:25:24,612 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:25:24,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:24,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1285759269, now seen corresponding path program 1 times [2022-11-03 02:25:24,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:24,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632706907] [2022-11-03 02:25:24,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:24,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:25,203 INFO L134 CoverageAnalysis]: Checked inductivity of 7660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7660 trivial. 0 not checked. [2022-11-03 02:25:25,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:25,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632706907] [2022-11-03 02:25:25,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632706907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:25,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:25,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:25,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306867897] [2022-11-03 02:25:25,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:25,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:25,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:25,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:25,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:25,206 INFO L87 Difference]: Start difference. First operand 18482 states and 26558 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-03 02:25:27,771 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 [] [2022-11-03 02:25:30,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:33,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:34,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:34,392 INFO L93 Difference]: Finished difference Result 50314 states and 72177 transitions. [2022-11-03 02:25:34,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:34,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 484 [2022-11-03 02:25:34,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:34,560 INFO L225 Difference]: With dead ends: 50314 [2022-11-03 02:25:34,560 INFO L226 Difference]: Without dead ends: 31921 [2022-11-03 02:25:34,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:34,630 INFO L413 NwaCegarLoop]: 4180 mSDtfsCounter, 2963 mSDsluCounter, 3777 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2965 SdHoareTripleChecker+Valid, 7582 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:34,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2965 Valid, 7582 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 817 Invalid, 3 Unknown, 0 Unchecked, 8.1s Time] [2022-11-03 02:25:34,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31921 states. [2022-11-03 02:25:36,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31921 to 31881. [2022-11-03 02:25:36,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31881 states, 18867 states have (on average 1.2974505750781788) internal successors, (24479), 19456 states have internal predecessors, (24479), 10548 states have call successors, (10548), 2463 states have call predecessors, (10548), 2462 states have return successors, (10636), 10401 states have call predecessors, (10636), 10544 states have call successors, (10636) [2022-11-03 02:25:36,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31881 states to 31881 states and 45663 transitions. [2022-11-03 02:25:36,443 INFO L78 Accepts]: Start accepts. Automaton has 31881 states and 45663 transitions. Word has length 484 [2022-11-03 02:25:36,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:36,444 INFO L495 AbstractCegarLoop]: Abstraction has 31881 states and 45663 transitions. [2022-11-03 02:25:36,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-03 02:25:36,444 INFO L276 IsEmpty]: Start isEmpty. Operand 31881 states and 45663 transitions. [2022-11-03 02:25:36,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-11-03 02:25:36,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:36,451 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:36,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:25:36,452 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:25:36,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:36,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1848928181, now seen corresponding path program 1 times [2022-11-03 02:25:36,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:36,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803143566] [2022-11-03 02:25:36,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:36,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:37,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7658 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7658 trivial. 0 not checked. [2022-11-03 02:25:37,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:37,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803143566] [2022-11-03 02:25:37,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803143566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:37,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:37,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:37,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138625568] [2022-11-03 02:25:37,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:37,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:37,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:37,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:37,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:37,225 INFO L87 Difference]: Start difference. First operand 31881 states and 45663 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2022-11-03 02:25:39,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:42,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:45,455 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 [] [2022-11-03 02:25:47,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:47,303 INFO L93 Difference]: Finished difference Result 85719 states and 122569 transitions. [2022-11-03 02:25:47,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:47,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 507 [2022-11-03 02:25:47,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:47,589 INFO L225 Difference]: With dead ends: 85719 [2022-11-03 02:25:47,589 INFO L226 Difference]: Without dead ends: 53927 [2022-11-03 02:25:47,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:47,705 INFO L413 NwaCegarLoop]: 5173 mSDtfsCounter, 3246 mSDsluCounter, 3755 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3250 SdHoareTripleChecker+Valid, 8558 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:47,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3250 Valid, 8558 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 945 Invalid, 3 Unknown, 0 Unchecked, 8.1s Time] [2022-11-03 02:25:47,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53927 states. [2022-11-03 02:25:50,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53927 to 53854. [2022-11-03 02:25:50,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53854 states, 32024 states have (on average 1.295590806894829) internal successors, (41490), 33065 states have internal predecessors, (41490), 17535 states have call successors, (17535), 4304 states have call predecessors, (17535), 4291 states have return successors, (17767), 17250 states have call predecessors, (17767), 17531 states have call successors, (17767) [2022-11-03 02:25:51,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53854 states to 53854 states and 76792 transitions. [2022-11-03 02:25:51,313 INFO L78 Accepts]: Start accepts. Automaton has 53854 states and 76792 transitions. Word has length 507 [2022-11-03 02:25:51,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:51,315 INFO L495 AbstractCegarLoop]: Abstraction has 53854 states and 76792 transitions. [2022-11-03 02:25:51,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2022-11-03 02:25:51,315 INFO L276 IsEmpty]: Start isEmpty. Operand 53854 states and 76792 transitions. [2022-11-03 02:25:51,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2022-11-03 02:25:51,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:51,321 INFO L195 NwaCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:51,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:25:51,322 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:25:51,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:51,322 INFO L85 PathProgramCache]: Analyzing trace with hash -2127335379, now seen corresponding path program 1 times [2022-11-03 02:25:51,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:51,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556322073] [2022-11-03 02:25:51,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:51,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:52,622 INFO L134 CoverageAnalysis]: Checked inductivity of 7963 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7963 trivial. 0 not checked. [2022-11-03 02:25:52,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:52,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556322073] [2022-11-03 02:25:52,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556322073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:52,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:52,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:52,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309738453] [2022-11-03 02:25:52,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:52,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:52,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:52,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:52,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:52,625 INFO L87 Difference]: Start difference. First operand 53854 states and 76792 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-03 02:25:55,283 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 [] [2022-11-03 02:25:58,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:00,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:02,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:05,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:07,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:07,789 INFO L93 Difference]: Finished difference Result 55120 states and 78534 transitions. [2022-11-03 02:26:07,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:26:07,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 515 [2022-11-03 02:26:07,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:08,076 INFO L225 Difference]: With dead ends: 55120 [2022-11-03 02:26:08,076 INFO L226 Difference]: Without dead ends: 55118 [2022-11-03 02:26:08,100 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 [2022-11-03 02:26:08,101 INFO L413 NwaCegarLoop]: 4491 mSDtfsCounter, 3406 mSDsluCounter, 11924 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3418 SdHoareTripleChecker+Valid, 15281 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:08,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3418 Valid, 15281 Invalid, 1621 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1615 Invalid, 5 Unknown, 0 Unchecked, 13.2s Time] [2022-11-03 02:26:08,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55118 states. [2022-11-03 02:26:10,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55118 to 55111. [2022-11-03 02:26:10,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55111 states, 32738 states have (on average 1.2948866760339666) internal successors, (42392), 33806 states have internal predecessors, (42392), 17950 states have call successors, (17950), 4431 states have call predecessors, (17950), 4419 states have return successors, (18186), 17662 states have call predecessors, (18186), 17946 states have call successors, (18186) [2022-11-03 02:26:10,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55111 states to 55111 states and 78528 transitions. [2022-11-03 02:26:10,969 INFO L78 Accepts]: Start accepts. Automaton has 55111 states and 78528 transitions. Word has length 515 [2022-11-03 02:26:10,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:10,970 INFO L495 AbstractCegarLoop]: Abstraction has 55111 states and 78528 transitions. [2022-11-03 02:26:10,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-03 02:26:10,971 INFO L276 IsEmpty]: Start isEmpty. Operand 55111 states and 78528 transitions. [2022-11-03 02:26:10,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2022-11-03 02:26:10,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:10,981 INFO L195 NwaCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:10,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:26:10,981 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:26:10,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:10,982 INFO L85 PathProgramCache]: Analyzing trace with hash 851809935, now seen corresponding path program 1 times [2022-11-03 02:26:10,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:10,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740815327] [2022-11-03 02:26:10,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:10,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:12,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7965 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7963 trivial. 0 not checked. [2022-11-03 02:26:12,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:12,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740815327] [2022-11-03 02:26:12,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740815327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:12,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:12,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:12,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325470211] [2022-11-03 02:26:12,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:12,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:12,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:12,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:12,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:12,372 INFO L87 Difference]: Start difference. First operand 55111 states and 78528 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-03 02:26:15,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:19,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:22,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:22,394 INFO L93 Difference]: Finished difference Result 97635 states and 138580 transitions. [2022-11-03 02:26:22,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:22,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 520 [2022-11-03 02:26:22,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:23,014 INFO L225 Difference]: With dead ends: 97635 [2022-11-03 02:26:23,015 INFO L226 Difference]: Without dead ends: 97633 [2022-11-03 02:26:23,058 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 [2022-11-03 02:26:23,059 INFO L413 NwaCegarLoop]: 4573 mSDtfsCounter, 2975 mSDsluCounter, 13484 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2984 SdHoareTripleChecker+Valid, 16768 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:23,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2984 Valid, 16768 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1763 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2022-11-03 02:26:23,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97633 states. [2022-11-03 02:26:27,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97633 to 97597. [2022-11-03 02:26:27,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97597 states, 58163 states have (on average 1.2936059006584941) internal successors, (75240), 60163 states have internal predecessors, (75240), 31251 states have call successors, (31251), 8262 states have call predecessors, (31251), 8179 states have return successors, (32054), 30498 states have call predecessors, (32054), 31243 states have call successors, (32054) [2022-11-03 02:26:27,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97597 states to 97597 states and 138545 transitions. [2022-11-03 02:26:27,865 INFO L78 Accepts]: Start accepts. Automaton has 97597 states and 138545 transitions. Word has length 520 [2022-11-03 02:26:27,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:27,866 INFO L495 AbstractCegarLoop]: Abstraction has 97597 states and 138545 transitions. [2022-11-03 02:26:27,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-03 02:26:27,866 INFO L276 IsEmpty]: Start isEmpty. Operand 97597 states and 138545 transitions. [2022-11-03 02:26:27,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2022-11-03 02:26:27,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:27,874 INFO L195 NwaCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:27,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:26:27,875 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:26:27,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:27,875 INFO L85 PathProgramCache]: Analyzing trace with hash 737359149, now seen corresponding path program 1 times [2022-11-03 02:26:27,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:27,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238820093] [2022-11-03 02:26:27,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:27,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:29,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7971 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7967 trivial. 0 not checked. [2022-11-03 02:26:29,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:29,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238820093] [2022-11-03 02:26:29,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238820093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:29,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:29,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:29,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568074734] [2022-11-03 02:26:29,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:29,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:29,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:29,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:29,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:29,090 INFO L87 Difference]: Start difference. First operand 97597 states and 138545 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-03 02:26:31,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:33,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:35,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:39,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:41,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:43,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:46,520 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 [] [2022-11-03 02:26:48,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:48,937 INFO L93 Difference]: Finished difference Result 97616 states and 138559 transitions. [2022-11-03 02:26:48,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:26:48,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 525 [2022-11-03 02:26:48,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:49,275 INFO L225 Difference]: With dead ends: 97616 [2022-11-03 02:26:49,275 INFO L226 Difference]: Without dead ends: 97614 [2022-11-03 02:26:49,302 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 [2022-11-03 02:26:49,303 INFO L413 NwaCegarLoop]: 4373 mSDtfsCounter, 3402 mSDsluCounter, 11663 mSDsCounter, 0 mSdLazyCounter, 1584 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3410 SdHoareTripleChecker+Valid, 14921 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1584 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:49,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3410 Valid, 14921 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1584 Invalid, 6 Unknown, 0 Unchecked, 16.1s Time] [2022-11-03 02:26:49,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97614 states. [2022-11-03 02:26:53,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97614 to 97608. [2022-11-03 02:26:53,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97608 states, 58171 states have (on average 1.2935655223393099) internal successors, (75248), 60171 states have internal predecessors, (75248), 31251 states have call successors, (31251), 8264 states have call predecessors, (31251), 8182 states have return successors, (32054), 30499 states have call predecessors, (32054), 31243 states have call successors, (32054) [2022-11-03 02:26:54,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97608 states to 97608 states and 138553 transitions. [2022-11-03 02:26:54,031 INFO L78 Accepts]: Start accepts. Automaton has 97608 states and 138553 transitions. Word has length 525 [2022-11-03 02:26:54,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:54,032 INFO L495 AbstractCegarLoop]: Abstraction has 97608 states and 138553 transitions. [2022-11-03 02:26:54,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-03 02:26:54,033 INFO L276 IsEmpty]: Start isEmpty. Operand 97608 states and 138553 transitions. [2022-11-03 02:26:54,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2022-11-03 02:26:54,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:54,042 INFO L195 NwaCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:54,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:26:54,042 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 02:26:54,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:54,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1840045809, now seen corresponding path program 1 times [2022-11-03 02:26:54,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:54,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906322872] [2022-11-03 02:26:54,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:54,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:55,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7981 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7975 trivial. 0 not checked. [2022-11-03 02:26:55,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:55,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906322872] [2022-11-03 02:26:55,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906322872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:55,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:55,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:55,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163079920] [2022-11-03 02:26:55,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:55,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:55,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:55,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:55,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:55,285 INFO L87 Difference]: Start difference. First operand 97608 states and 138553 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-03 02:26:57,883 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 [] [2022-11-03 02:27:01,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:03,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:06,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:08,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:11,093 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 [] [2022-11-03 02:27:14,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:14,142 INFO L93 Difference]: Finished difference Result 97624 states and 138565 transitions. [2022-11-03 02:27:14,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:27:14,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 530 [2022-11-03 02:27:14,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:14,446 INFO L225 Difference]: With dead ends: 97624 [2022-11-03 02:27:14,446 INFO L226 Difference]: Without dead ends: 97622 [2022-11-03 02:27:14,473 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 [2022-11-03 02:27:14,473 INFO L413 NwaCegarLoop]: 4375 mSDtfsCounter, 3402 mSDsluCounter, 11668 mSDsCounter, 0 mSdLazyCounter, 1586 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3409 SdHoareTripleChecker+Valid, 14927 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1586 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:14,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3409 Valid, 14927 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1586 Invalid, 5 Unknown, 0 Unchecked, 14.8s Time] [2022-11-03 02:27:14,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97622 states. [2022-11-03 02:27:19,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97622 to 97616. [2022-11-03 02:27:19,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97616 states, 58177 states have (on average 1.29353524588755) internal successors, (75254), 60177 states have internal predecessors, (75254), 31251 states have call successors, (31251), 8266 states have call predecessors, (31251), 8184 states have return successors, (32054), 30499 states have call predecessors, (32054), 31243 states have call successors, (32054)