./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c6438e-913a-44ac-8367-1aca21887053/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c6438e-913a-44ac-8367-1aca21887053/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_23c6438e-913a-44ac-8367-1aca21887053/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c6438e-913a-44ac-8367-1aca21887053/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c6438e-913a-44ac-8367-1aca21887053/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_23c6438e-913a-44ac-8367-1aca21887053/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 bce5aa2319ae110f8a0b01ff2a22780545859bbd4eceb3e6d7a0268461602692 --- 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 04:08:42,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:08:42,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:08:42,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:08:42,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:08:42,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:08:42,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:08:42,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:08:42,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:08:42,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:08:42,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:08:42,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:08:42,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:08:42,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:08:42,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:08:42,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:08:42,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:08:42,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:08:42,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:08:42,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:08:42,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:08:42,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:08:42,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:08:42,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:08:42,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:08:42,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:08:42,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:08:42,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:08:42,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:08:42,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:08:42,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:08:42,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:08:42,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:08:42,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:08:42,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:08:42,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:08:42,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:08:42,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:08:42,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:08:42,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:08:42,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:08:42,311 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c6438e-913a-44ac-8367-1aca21887053/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 04:08:42,337 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:08:42,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:08:42,338 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:08:42,339 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:08:42,339 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:08:42,340 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:08:42,340 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:08:42,341 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:08:42,341 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:08:42,341 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:08:42,341 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:08:42,342 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:08:42,342 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:08:42,342 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:08:42,342 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:08:42,343 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:08:42,343 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:08:42,343 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:08:42,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:08:42,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:08:42,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:08:42,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:08:42,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:08:42,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:08:42,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:08:42,346 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:08:42,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:08:42,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:08:42,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:08:42,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:08:42,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:08:42,348 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:08:42,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:08:42,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:08:42,349 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:08:42,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:08:42,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:08:42,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:08:42,350 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_23c6438e-913a-44ac-8367-1aca21887053/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c6438e-913a-44ac-8367-1aca21887053/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bce5aa2319ae110f8a0b01ff2a22780545859bbd4eceb3e6d7a0268461602692 [2022-11-03 04:08:42,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:08:42,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:08:42,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:08:42,738 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:08:42,739 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:08:42,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c6438e-913a-44ac-8367-1aca21887053/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i [2022-11-03 04:08:42,806 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c6438e-913a-44ac-8367-1aca21887053/bin/utaipan-7li7fVZpFI/data/f244a4ef4/14ca62911e934541abb4e1f3c26a77ee/FLAG7e0743187 [2022-11-03 04:08:43,997 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:08:43,998 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c6438e-913a-44ac-8367-1aca21887053/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i [2022-11-03 04:08:44,058 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c6438e-913a-44ac-8367-1aca21887053/bin/utaipan-7li7fVZpFI/data/f244a4ef4/14ca62911e934541abb4e1f3c26a77ee/FLAG7e0743187 [2022-11-03 04:08:44,193 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c6438e-913a-44ac-8367-1aca21887053/bin/utaipan-7li7fVZpFI/data/f244a4ef4/14ca62911e934541abb4e1f3c26a77ee [2022-11-03 04:08:44,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:08:44,200 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:08:44,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:08:44,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:08:44,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:08:44,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:08:44" (1/1) ... [2022-11-03 04:08:44,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@204c441b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:44, skipping insertion in model container [2022-11-03 04:08:44,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:08:44" (1/1) ... [2022-11-03 04:08:44,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:08:44,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:08:50,171 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_23c6438e-913a-44ac-8367-1aca21887053/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588044,588057] [2022-11-03 04:08:50,175 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_23c6438e-913a-44ac-8367-1aca21887053/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588213,588226] [2022-11-03 04:08:50,176 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_23c6438e-913a-44ac-8367-1aca21887053/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588380,588393] [2022-11-03 04:08:50,184 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_23c6438e-913a-44ac-8367-1aca21887053/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588548,588561] [2022-11-03 04:08:50,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:08:50,377 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:08:51,347 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_23c6438e-913a-44ac-8367-1aca21887053/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588044,588057] [2022-11-03 04:08:51,348 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_23c6438e-913a-44ac-8367-1aca21887053/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588213,588226] [2022-11-03 04:08:51,348 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_23c6438e-913a-44ac-8367-1aca21887053/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588380,588393] [2022-11-03 04:08:51,349 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_23c6438e-913a-44ac-8367-1aca21887053/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588548,588561] [2022-11-03 04:08:51,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:08:51,676 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:08:51,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:51 WrapperNode [2022-11-03 04:08:51,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:08:51,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:08:51,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:08:51,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:08:51,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:51" (1/1) ... [2022-11-03 04:08:51,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:51" (1/1) ... [2022-11-03 04:08:52,274 INFO L138 Inliner]: procedures = 539, calls = 4204, calls flagged for inlining = 262, calls inlined = 249, statements flattened = 8457 [2022-11-03 04:08:52,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:08:52,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:08:52,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:08:52,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:08:52,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:51" (1/1) ... [2022-11-03 04:08:52,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:51" (1/1) ... [2022-11-03 04:08:52,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:51" (1/1) ... [2022-11-03 04:08:52,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:51" (1/1) ... [2022-11-03 04:08:52,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:51" (1/1) ... [2022-11-03 04:08:52,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:51" (1/1) ... [2022-11-03 04:08:52,799 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:51" (1/1) ... [2022-11-03 04:08:52,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:51" (1/1) ... [2022-11-03 04:08:52,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:08:52,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:08:52,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:08:52,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:08:52,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:51" (1/1) ... [2022-11-03 04:08:52,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:08:52,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c6438e-913a-44ac-8367-1aca21887053/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:08:52,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c6438e-913a-44ac-8367-1aca21887053/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:08:52,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c6438e-913a-44ac-8367-1aca21887053/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:08:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure video_open [2022-11-03 04:08:53,005 INFO L138 BoogieDeclarations]: Found implementation of procedure video_open [2022-11-03 04:08:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 04:08:53,006 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 04:08:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamon [2022-11-03 04:08:53,006 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamon [2022-11-03 04:08:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_unregister_video [2022-11-03 04:08:53,006 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_unregister_video [2022-11-03 04:08:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_fmt_vid_cap [2022-11-03 04:08:53,007 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_fmt_vid_cap [2022-11-03 04:08:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 04:08:53,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 04:08:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_input [2022-11-03 04:08:53,008 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_input [2022-11-03 04:08:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_reqbufs [2022-11-03 04:08:53,008 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_reqbufs [2022-11-03 04:08:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_enum_fmt_vid_cap [2022-11-03 04:08:53,008 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_enum_fmt_vid_cap [2022-11-03 04:08:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 04:08:53,009 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 04:08:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_tvnorm [2022-11-03 04:08:53,009 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_tvnorm [2022-11-03 04:08:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_77 [2022-11-03 04:08:53,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_77 [2022-11-03 04:08:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_tvaudio [2022-11-03 04:08:53,010 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_tvaudio [2022-11-03 04:08:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 04:08:53,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 04:08:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_s_vid_ctrl [2022-11-03 04:08:53,011 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_s_vid_ctrl [2022-11-03 04:08:53,011 INFO L130 BoogieDeclarations]: Found specification of procedure res_free [2022-11-03 04:08:53,011 INFO L138 BoogieDeclarations]: Found implementation of procedure res_free [2022-11-03 04:08:53,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_slock_of_cx8800_dev [2022-11-03 04:08:53,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_slock_of_cx8800_dev [2022-11-03 04:08:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 04:08:53,012 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 04:08:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_to_dma [2022-11-03 04:08:53,012 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_to_dma [2022-11-03 04:08:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_shutdown [2022-11-03 04:08:53,013 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_shutdown [2022-11-03 04:08:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-03 04:08:53,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-03 04:08:53,014 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_fmt_vid_cap [2022-11-03 04:08:53,016 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_fmt_vid_cap [2022-11-03 04:08:53,016 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_newstation [2022-11-03 04:08:53,016 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_newstation [2022-11-03 04:08:53,016 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_std [2022-11-03 04:08:53,016 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_std [2022-11-03 04:08:53,016 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_vdev_init [2022-11-03 04:08:53,017 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_vdev_init [2022-11-03 04:08:53,017 INFO L130 BoogieDeclarations]: Found specification of procedure video_mmap [2022-11-03 04:08:53,017 INFO L138 BoogieDeclarations]: Found implementation of procedure video_mmap [2022-11-03 04:08:53,018 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 04:08:53,018 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 04:08:53,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 04:08:53,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 04:08:53,019 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 04:08:53,019 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 04:08:53,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer [2022-11-03 04:08:53,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer [2022-11-03 04:08:53,020 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2022-11-03 04:08:53,020 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2022-11-03 04:08:53,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 04:08:53,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 04:08:53,021 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_poll [2022-11-03 04:08:53,022 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_poll [2022-11-03 04:08:53,022 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_frequency [2022-11-03 04:08:53,022 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_frequency [2022-11-03 04:08:53,022 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querybuf [2022-11-03 04:08:53,022 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querybuf [2022-11-03 04:08:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_register [2022-11-03 04:08:53,023 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_register [2022-11-03 04:08:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2022-11-03 04:08:53,023 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2022-11-03 04:08:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_setup [2022-11-03 04:08:53,024 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_setup [2022-11-03 04:08:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 04:08:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_stereo [2022-11-03 04:08:53,025 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_stereo [2022-11-03 04:08:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_vbi_fmt [2022-11-03 04:08:53,025 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_vbi_fmt [2022-11-03 04:08:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 04:08:53,027 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 04:08:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_audio_thread [2022-11-03 04:08:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_try_fmt_vid_cap [2022-11-03 04:08:53,028 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_try_fmt_vid_cap [2022-11-03 04:08:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2022-11-03 04:08:53,029 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2022-11-03 04:08:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 04:08:53,030 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2022-11-03 04:08:53,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2022-11-03 04:08:53,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 04:08:53,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 04:08:53,030 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_restart_vbi_queue [2022-11-03 04:08:53,030 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_restart_vbi_queue [2022-11-03 04:08:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 04:08:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_finidev [2022-11-03 04:08:53,031 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_finidev [2022-11-03 04:08:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 04:08:53,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 04:08:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2022-11-03 04:08:53,033 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2022-11-03 04:08:53,033 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_querycap [2022-11-03 04:08:53,034 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_querycap [2022-11-03 04:08:53,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 04:08:53,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 04:08:53,038 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_freq [2022-11-03 04:08:53,038 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_freq [2022-11-03 04:08:53,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 04:08:53,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 04:08:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_s_aud_ctrl [2022-11-03 04:08:53,040 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_s_aud_ctrl [2022-11-03 04:08:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure video_read [2022-11-03 04:08:53,041 INFO L138 BoogieDeclarations]: Found implementation of procedure video_read [2022-11-03 04:08:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-03 04:08:53,048 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-03 04:08:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_video_mux [2022-11-03 04:08:53,048 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_video_mux [2022-11-03 04:08:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 04:08:53,048 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 04:08:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure video_is_registered [2022-11-03 04:08:53,049 INFO L138 BoogieDeclarations]: Found implementation of procedure video_is_registered [2022-11-03 04:08:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_subscribe_event [2022-11-03 04:08:53,049 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_subscribe_event [2022-11-03 04:08:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure video_unregister_device [2022-11-03 04:08:53,049 INFO L138 BoogieDeclarations]: Found implementation of procedure video_unregister_device [2022-11-03 04:08:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 04:08:53,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 04:08:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 04:08:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 04:08:53,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 04:08:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 04:08:53,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 04:08:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-03 04:08:53,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-03 04:08:53,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-03 04:08:53,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-03 04:08:53,051 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_queue_sg_init [2022-11-03 04:08:53,051 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_queue_sg_init [2022-11-03 04:08:53,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:08:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 04:08:53,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 04:08:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 04:08:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure video_release [2022-11-03 04:08:53,052 INFO L138 BoogieDeclarations]: Found implementation of procedure video_release [2022-11-03 04:08:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 04:08:53,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 04:08:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 04:08:53,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 04:08:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure restart_video_queue [2022-11-03 04:08:53,053 INFO L138 BoogieDeclarations]: Found implementation of procedure restart_video_queue [2022-11-03 04:08:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_qbuf [2022-11-03 04:08:53,053 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_qbuf [2022-11-03 04:08:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_wakeup [2022-11-03 04:08:53,054 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_wakeup [2022-11-03 04:08:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 04:08:53,054 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 04:08:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_s_ctrl [2022-11-03 04:08:53,054 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_s_ctrl [2022-11-03 04:08:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-03 04:08:53,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-03 04:08:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_iolock [2022-11-03 04:08:53,055 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_iolock [2022-11-03 04:08:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_enum_input [2022-11-03 04:08:53,055 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_enum_input [2022-11-03 04:08:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_sram_channel_dump [2022-11-03 04:08:53,056 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_sram_channel_dump [2022-11-03 04:08:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure video_set_drvdata [2022-11-03 04:08:53,056 INFO L138 BoogieDeclarations]: Found implementation of procedure video_set_drvdata [2022-11-03 04:08:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_tuner [2022-11-03 04:08:53,056 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_tuner [2022-11-03 04:08:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure res_check [2022-11-03 04:08:53,057 INFO L138 BoogieDeclarations]: Found implementation of procedure res_check [2022-11-03 04:08:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure format_by_fourcc [2022-11-03 04:08:53,057 INFO L138 BoogieDeclarations]: Found implementation of procedure format_by_fourcc [2022-11-03 04:08:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_risc_buffer [2022-11-03 04:08:53,057 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_risc_buffer [2022-11-03 04:08:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-03 04:08:53,058 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-03 04:08:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-03 04:08:53,058 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-03 04:08:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_unsubscribe [2022-11-03 04:08:53,058 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_event_unsubscribe [2022-11-03 04:08:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:08:53,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:08:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_risc_stopper [2022-11-03 04:08:53,059 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_risc_stopper [2022-11-03 04:08:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 04:08:53,059 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 04:08:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-03 04:08:53,059 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-03 04:08:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 04:08:53,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 04:08:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_std [2022-11-03 04:08:53,060 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_std [2022-11-03 04:08:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 04:08:53,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 04:08:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamoff [2022-11-03 04:08:53,061 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamoff [2022-11-03 04:08:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_sram_channel_setup [2022-11-03 04:08:53,061 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_sram_channel_setup [2022-11-03 04:08:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_free_buffer [2022-11-03 04:08:53,061 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_free_buffer [2022-11-03 04:08:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2022-11-03 04:08:53,062 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2022-11-03 04:08:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 04:08:53,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 04:08:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_enum_input [2022-11-03 04:08:53,062 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_enum_input [2022-11-03 04:08:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 04:08:53,062 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 04:08:53,063 INFO L130 BoogieDeclarations]: Found specification of procedure res_get [2022-11-03 04:08:53,063 INFO L138 BoogieDeclarations]: Found implementation of procedure res_get [2022-11-03 04:08:53,063 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_mmap_free [2022-11-03 04:08:53,063 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_mmap_free [2022-11-03 04:08:53,063 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_resume [2022-11-03 04:08:53,063 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_resume [2022-11-03 04:08:53,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_cx8800_pci_driver_exit_15_2 [2022-11-03 04:08:53,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_cx8800_pci_driver_exit_15_2 [2022-11-03 04:08:53,064 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_frequency [2022-11-03 04:08:53,064 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_frequency [2022-11-03 04:08:53,064 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-03 04:08:53,064 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-03 04:08:53,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2022-11-03 04:08:53,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2022-11-03 04:08:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure video_poll [2022-11-03 04:08:53,065 INFO L138 BoogieDeclarations]: Found implementation of procedure video_poll [2022-11-03 04:08:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 04:08:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 04:08:53,065 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 04:08:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 04:08:53,066 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_core_put [2022-11-03 04:08:53,066 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_core_put [2022-11-03 04:08:53,066 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_find [2022-11-03 04:08:53,066 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_find [2022-11-03 04:08:53,066 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_release [2022-11-03 04:08:53,066 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_release [2022-11-03 04:08:53,066 INFO L130 BoogieDeclarations]: Found specification of procedure start_video_dma [2022-11-03 04:08:53,067 INFO L138 BoogieDeclarations]: Found implementation of procedure start_video_dma [2022-11-03 04:08:53,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 04:08:53,067 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_node_name [2022-11-03 04:08:53,071 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_node_name [2022-11-03 04:08:53,071 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 04:08:53,071 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 04:08:53,071 INFO L130 BoogieDeclarations]: Found specification of procedure get_queue [2022-11-03 04:08:53,072 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queue [2022-11-03 04:08:53,072 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 04:08:53,072 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 04:08:53,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 04:08:53,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 04:08:53,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-03 04:08:53,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-03 04:08:53,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 04:08:53,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 04:08:53,073 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_dqbuf [2022-11-03 04:08:53,073 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_dqbuf [2022-11-03 04:08:53,073 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 04:08:53,073 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 04:08:53,073 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querycap [2022-11-03 04:08:53,074 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querycap [2022-11-03 04:08:53,074 INFO L130 BoogieDeclarations]: Found specification of procedure video_register_device [2022-11-03 04:08:53,074 INFO L138 BoogieDeclarations]: Found implementation of procedure video_register_device [2022-11-03 04:08:53,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_78 [2022-11-03 04:08:53,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_78 [2022-11-03 04:08:53,074 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 04:08:53,074 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 04:08:53,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 04:08:53,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 04:08:53,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 04:08:53,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_79 [2022-11-03 04:08:53,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_79 [2022-11-03 04:08:53,075 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_input [2022-11-03 04:08:53,075 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_input [2022-11-03 04:08:53,076 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-03 04:08:53,076 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-03 04:08:53,076 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_tuner [2022-11-03 04:08:53,076 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_tuner [2022-11-03 04:08:53,076 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 04:08:53,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 04:08:53,076 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_start_vbi_dma [2022-11-03 04:08:53,077 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_start_vbi_dma [2022-11-03 04:08:53,077 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_ir_stop [2022-11-03 04:08:53,077 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_ir_stop [2022-11-03 04:08:53,077 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_register [2022-11-03 04:08:53,077 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_register [2022-11-03 04:08:53,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 04:08:53,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 04:08:53,078 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-03 04:08:53,078 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-03 04:08:53,078 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-03 04:08:53,078 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-03 04:08:53,078 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxw [2022-11-03 04:08:53,078 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxw [2022-11-03 04:08:53,078 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-03 04:08:53,079 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-03 04:08:53,079 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxh [2022-11-03 04:08:53,079 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxh [2022-11-03 04:08:53,079 INFO L130 BoogieDeclarations]: Found specification of procedure get_resource [2022-11-03 04:08:53,080 INFO L138 BoogieDeclarations]: Found implementation of procedure get_resource [2022-11-03 04:08:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 04:08:53,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 04:08:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-03 04:08:53,081 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-03 04:08:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_initdev [2022-11-03 04:08:53,081 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_initdev [2022-11-03 04:08:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:08:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_slock_of_cx8800_dev [2022-11-03 04:08:53,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_slock_of_cx8800_dev [2022-11-03 04:08:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 04:08:53,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 04:08:54,827 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:08:54,836 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:08:55,274 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 04:09:25,354 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 04:09:25,631 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:09:27,519 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:09:27,520 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-03 04:09:27,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:27 BoogieIcfgContainer [2022-11-03 04:09:27,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:09:27,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:09:27,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:09:27,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:09:27,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:08:44" (1/3) ... [2022-11-03 04:09:27,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16114d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:27, skipping insertion in model container [2022-11-03 04:09:27,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:51" (2/3) ... [2022-11-03 04:09:27,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16114d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:27, skipping insertion in model container [2022-11-03 04:09:27,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:27" (3/3) ... [2022-11-03 04:09:27,540 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i [2022-11-03 04:09:27,564 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:09:27,564 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 04:09:27,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:09:27,708 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;@5cdf3c0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:09:27,708 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 04:09:27,722 INFO L276 IsEmpty]: Start isEmpty. Operand has 2242 states, 1324 states have (on average 1.3006042296072509) internal successors, (1722), 1340 states have internal predecessors, (1722), 768 states have call successors, (768), 148 states have call predecessors, (768), 147 states have return successors, (761), 760 states have call predecessors, (761), 761 states have call successors, (761) [2022-11-03 04:09:27,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2022-11-03 04:09:27,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:27,778 INFO L195 NwaCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 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] [2022-11-03 04:09:27,779 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:09:27,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:27,789 INFO L85 PathProgramCache]: Analyzing trace with hash 76814640, now seen corresponding path program 1 times [2022-11-03 04:09:27,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:09:27,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902039090] [2022-11-03 04:09:27,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:27,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:09:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 9509 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9509 trivial. 0 not checked. [2022-11-03 04:09:29,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:09:29,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902039090] [2022-11-03 04:09:29,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902039090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:09:29,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:09:29,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:09:29,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471383532] [2022-11-03 04:09:29,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:09:29,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:09:29,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:09:29,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:09:29,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:09:29,871 INFO L87 Difference]: Start difference. First operand has 2242 states, 1324 states have (on average 1.3006042296072509) internal successors, (1722), 1340 states have internal predecessors, (1722), 768 states have call successors, (768), 148 states have call predecessors, (768), 147 states have return successors, (761), 760 states have call predecessors, (761), 761 states have call successors, (761) Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2022-11-03 04:09:33,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:09:35,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:38,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:09:40,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:09:40,239 INFO L93 Difference]: Finished difference Result 6443 states and 9460 transitions. [2022-11-03 04:09:40,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:09:40,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 515 [2022-11-03 04:09:40,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:09:40,298 INFO L225 Difference]: With dead ends: 6443 [2022-11-03 04:09:40,298 INFO L226 Difference]: Without dead ends: 4289 [2022-11-03 04:09:40,317 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 04:09:40,321 INFO L413 NwaCegarLoop]: 3453 mSDtfsCounter, 2996 mSDsluCounter, 3182 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2996 SdHoareTripleChecker+Valid, 6186 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:09:40,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2996 Valid, 6186 Invalid, 971 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 954 Invalid, 2 Unknown, 0 Unchecked, 9.9s Time] [2022-11-03 04:09:40,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4289 states. [2022-11-03 04:09:40,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4289 to 4285. [2022-11-03 04:09:40,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4285 states, 2555 states have (on average 1.2962818003913894) internal successors, (3312), 2586 states have internal predecessors, (3312), 1437 states have call successors, (1437), 291 states have call predecessors, (1437), 290 states have return successors, (1433), 1431 states have call predecessors, (1433), 1433 states have call successors, (1433) [2022-11-03 04:09:40,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4285 states to 4285 states and 6182 transitions. [2022-11-03 04:09:40,719 INFO L78 Accepts]: Start accepts. Automaton has 4285 states and 6182 transitions. Word has length 515 [2022-11-03 04:09:40,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:09:40,728 INFO L495 AbstractCegarLoop]: Abstraction has 4285 states and 6182 transitions. [2022-11-03 04:09:40,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2022-11-03 04:09:40,729 INFO L276 IsEmpty]: Start isEmpty. Operand 4285 states and 6182 transitions. [2022-11-03 04:09:40,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2022-11-03 04:09:40,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:40,757 INFO L195 NwaCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:09:40,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:09:40,758 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:09:40,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:40,759 INFO L85 PathProgramCache]: Analyzing trace with hash -836954322, now seen corresponding path program 1 times [2022-11-03 04:09:40,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:09:40,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791078156] [2022-11-03 04:09:40,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:40,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:09:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:42,071 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2022-11-03 04:09:42,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:09:42,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791078156] [2022-11-03 04:09:42,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791078156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:09:42,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:09:42,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:09:42,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980331665] [2022-11-03 04:09:42,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:09:42,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:09:42,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:09:42,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:09:42,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:09:42,100 INFO L87 Difference]: Start difference. First operand 4285 states and 6182 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, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2022-11-03 04:09:44,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:46,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:51,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:09:52,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:09:52,879 INFO L93 Difference]: Finished difference Result 10309 states and 14864 transitions. [2022-11-03 04:09:52,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:09:52,880 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, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 524 [2022-11-03 04:09:52,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:09:52,920 INFO L225 Difference]: With dead ends: 10309 [2022-11-03 04:09:52,920 INFO L226 Difference]: Without dead ends: 6123 [2022-11-03 04:09:52,938 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 04:09:52,939 INFO L413 NwaCegarLoop]: 3505 mSDtfsCounter, 2817 mSDsluCounter, 3165 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2819 SdHoareTripleChecker+Valid, 6222 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:09:52,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2819 Valid, 6222 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 985 Invalid, 2 Unknown, 0 Unchecked, 10.4s Time] [2022-11-03 04:09:52,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6123 states. [2022-11-03 04:09:53,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6123 to 6094. [2022-11-03 04:09:53,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6094 states, 3662 states have (on average 1.2987438558164937) internal successors, (4756), 3708 states have internal predecessors, (4756), 2004 states have call successors, (2004), 427 states have call predecessors, (2004), 425 states have return successors, (2002), 1990 states have call predecessors, (2002), 2000 states have call successors, (2002) [2022-11-03 04:09:53,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6094 states to 6094 states and 8762 transitions. [2022-11-03 04:09:53,298 INFO L78 Accepts]: Start accepts. Automaton has 6094 states and 8762 transitions. Word has length 524 [2022-11-03 04:09:53,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:09:53,302 INFO L495 AbstractCegarLoop]: Abstraction has 6094 states and 8762 transitions. [2022-11-03 04:09:53,302 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, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2022-11-03 04:09:53,302 INFO L276 IsEmpty]: Start isEmpty. Operand 6094 states and 8762 transitions. [2022-11-03 04:09:53,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2022-11-03 04:09:53,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:53,318 INFO L195 NwaCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:09:53,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:09:53,319 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:09:53,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:53,320 INFO L85 PathProgramCache]: Analyzing trace with hash -796047328, now seen corresponding path program 1 times [2022-11-03 04:09:53,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:09:53,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277553689] [2022-11-03 04:09:53,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:53,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:09:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:54,294 INFO L134 CoverageAnalysis]: Checked inductivity of 9510 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9510 trivial. 0 not checked. [2022-11-03 04:09:54,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:09:54,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277553689] [2022-11-03 04:09:54,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277553689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:09:54,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:09:54,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:09:54,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826955765] [2022-11-03 04:09:54,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:09:54,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:09:54,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:09:54,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:09:54,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:09:54,297 INFO L87 Difference]: Start difference. First operand 6094 states and 8762 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2022-11-03 04:09:56,816 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 04:10:02,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:02,524 INFO L93 Difference]: Finished difference Result 17894 states and 25763 transitions. [2022-11-03 04:10:02,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:10:02,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) Word has length 535 [2022-11-03 04:10:02,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:02,610 INFO L225 Difference]: With dead ends: 17894 [2022-11-03 04:10:02,610 INFO L226 Difference]: Without dead ends: 11899 [2022-11-03 04:10:02,645 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 04:10:02,651 INFO L413 NwaCegarLoop]: 3459 mSDtfsCounter, 2969 mSDsluCounter, 3222 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2971 SdHoareTripleChecker+Valid, 6226 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:02,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2971 Valid, 6226 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 926 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-11-03 04:10:02,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11899 states. [2022-11-03 04:10:03,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11899 to 11870. [2022-11-03 04:10:03,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11870 states, 7164 states have (on average 1.3030429927414853) internal successors, (9335), 7257 states have internal predecessors, (9335), 3863 states have call successors, (3863), 844 states have call predecessors, (3863), 840 states have return successors, (3911), 3832 states have call predecessors, (3911), 3859 states have call successors, (3911) [2022-11-03 04:10:03,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11870 states to 11870 states and 17109 transitions. [2022-11-03 04:10:03,332 INFO L78 Accepts]: Start accepts. Automaton has 11870 states and 17109 transitions. Word has length 535 [2022-11-03 04:10:03,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:03,333 INFO L495 AbstractCegarLoop]: Abstraction has 11870 states and 17109 transitions. [2022-11-03 04:10:03,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2022-11-03 04:10:03,334 INFO L276 IsEmpty]: Start isEmpty. Operand 11870 states and 17109 transitions. [2022-11-03 04:10:03,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2022-11-03 04:10:03,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:03,351 INFO L195 NwaCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 3, 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] [2022-11-03 04:10:03,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:10:03,351 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:10:03,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:03,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1253381912, now seen corresponding path program 1 times [2022-11-03 04:10:03,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:03,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713536343] [2022-11-03 04:10:03,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:03,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:10:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:04,485 INFO L134 CoverageAnalysis]: Checked inductivity of 9514 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9514 trivial. 0 not checked. [2022-11-03 04:10:04,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:10:04,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713536343] [2022-11-03 04:10:04,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713536343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:04,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:10:04,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:10:04,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142468728] [2022-11-03 04:10:04,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:04,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:10:04,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:10:04,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:10:04,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:10:04,488 INFO L87 Difference]: Start difference. First operand 11870 states and 17109 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-11-03 04:10:06,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:10:10,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:10:14,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:10:15,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:15,483 INFO L93 Difference]: Finished difference Result 34898 states and 50452 transitions. [2022-11-03 04:10:15,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:10:15,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 541 [2022-11-03 04:10:15,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:15,668 INFO L225 Difference]: With dead ends: 34898 [2022-11-03 04:10:15,668 INFO L226 Difference]: Without dead ends: 23127 [2022-11-03 04:10:15,739 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 04:10:15,740 INFO L413 NwaCegarLoop]: 3566 mSDtfsCounter, 2962 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2964 SdHoareTripleChecker+Valid, 6310 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:15,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2964 Valid, 6310 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 949 Invalid, 2 Unknown, 0 Unchecked, 10.3s Time] [2022-11-03 04:10:15,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23127 states. [2022-11-03 04:10:17,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23127 to 23090. [2022-11-03 04:10:17,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23090 states, 13998 states have (on average 1.3044720674382055) internal successors, (18260), 14160 states have internal predecessors, (18260), 7449 states have call successors, (7449), 1657 states have call predecessors, (7449), 1640 states have return successors, (7719), 7364 states have call predecessors, (7719), 7445 states have call successors, (7719) [2022-11-03 04:10:17,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23090 states to 23090 states and 33428 transitions. [2022-11-03 04:10:17,768 INFO L78 Accepts]: Start accepts. Automaton has 23090 states and 33428 transitions. Word has length 541 [2022-11-03 04:10:17,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:17,770 INFO L495 AbstractCegarLoop]: Abstraction has 23090 states and 33428 transitions. [2022-11-03 04:10:17,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-11-03 04:10:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand 23090 states and 33428 transitions. [2022-11-03 04:10:17,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2022-11-03 04:10:17,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:17,792 INFO L195 NwaCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:10:17,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 04:10:17,793 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:10:17,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:17,794 INFO L85 PathProgramCache]: Analyzing trace with hash -599855989, now seen corresponding path program 1 times [2022-11-03 04:10:17,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:17,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255094904] [2022-11-03 04:10:17,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:17,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:10:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 9847 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9847 trivial. 0 not checked. [2022-11-03 04:10:20,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:10:20,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255094904] [2022-11-03 04:10:20,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255094904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:20,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:10:20,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:10:20,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680330112] [2022-11-03 04:10:20,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:20,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:10:20,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:10:20,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:10:20,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:10:20,239 INFO L87 Difference]: Start difference. First operand 23090 states and 33428 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, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-11-03 04:10:24,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:10:27,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:10:29,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:10:31,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:31,940 INFO L93 Difference]: Finished difference Result 23096 states and 33433 transitions. [2022-11-03 04:10:31,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:10:31,941 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, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 561 [2022-11-03 04:10:31,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:32,071 INFO L225 Difference]: With dead ends: 23096 [2022-11-03 04:10:32,071 INFO L226 Difference]: Without dead ends: 23094 [2022-11-03 04:10:32,081 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 04:10:32,082 INFO L413 NwaCegarLoop]: 2752 mSDtfsCounter, 3086 mSDsluCounter, 6417 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3097 SdHoareTripleChecker+Valid, 8243 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:32,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3097 Valid, 8243 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2022-11-03 04:10:32,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23094 states. [2022-11-03 04:10:33,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23094 to 23094. [2022-11-03 04:10:33,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23094 states, 14001 states have (on average 1.3044068280837082) internal successors, (18263), 14163 states have internal predecessors, (18263), 7449 states have call successors, (7449), 1658 states have call predecessors, (7449), 1641 states have return successors, (7719), 7364 states have call predecessors, (7719), 7445 states have call successors, (7719) [2022-11-03 04:10:33,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23094 states to 23094 states and 33431 transitions. [2022-11-03 04:10:33,568 INFO L78 Accepts]: Start accepts. Automaton has 23094 states and 33431 transitions. Word has length 561 [2022-11-03 04:10:33,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:33,570 INFO L495 AbstractCegarLoop]: Abstraction has 23094 states and 33431 transitions. [2022-11-03 04:10:33,570 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, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-11-03 04:10:33,571 INFO L276 IsEmpty]: Start isEmpty. Operand 23094 states and 33431 transitions. [2022-11-03 04:10:33,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2022-11-03 04:10:33,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:33,587 INFO L195 NwaCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:10:33,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 04:10:33,588 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:10:33,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:33,589 INFO L85 PathProgramCache]: Analyzing trace with hash 266708014, now seen corresponding path program 1 times [2022-11-03 04:10:33,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:33,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292001939] [2022-11-03 04:10:33,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:33,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:10:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:35,829 INFO L134 CoverageAnalysis]: Checked inductivity of 9848 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9846 trivial. 0 not checked. [2022-11-03 04:10:35,829 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:10:35,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292001939] [2022-11-03 04:10:35,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292001939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:35,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:10:35,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:10:35,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102038507] [2022-11-03 04:10:35,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:35,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:10:35,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:10:35,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:10:35,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:10:35,833 INFO L87 Difference]: Start difference. First operand 23094 states and 33431 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-03 04:10:42,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:10:44,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:10:48,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:48,927 INFO L93 Difference]: Finished difference Result 46059 states and 66659 transitions. [2022-11-03 04:10:48,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:10:48,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 565 [2022-11-03 04:10:48,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:49,202 INFO L225 Difference]: With dead ends: 46059 [2022-11-03 04:10:49,203 INFO L226 Difference]: Without dead ends: 46057 [2022-11-03 04:10:49,228 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 04:10:49,231 INFO L413 NwaCegarLoop]: 3461 mSDtfsCounter, 3076 mSDsluCounter, 10896 mSDsCounter, 0 mSdLazyCounter, 1866 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3086 SdHoareTripleChecker+Valid, 12973 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1866 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:49,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3086 Valid, 12973 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1866 Invalid, 1 Unknown, 0 Unchecked, 11.4s Time] [2022-11-03 04:10:49,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46057 states. [2022-11-03 04:10:52,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46057 to 46039. [2022-11-03 04:10:52,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46039 states, 27928 states have (on average 1.305213405900888) internal successors, (36452), 28262 states have internal predecessors, (36452), 14825 states have call successors, (14825), 3317 states have call predecessors, (14825), 3283 states have return successors, (15365), 14643 states have call predecessors, (15365), 14817 states have call successors, (15365) [2022-11-03 04:10:52,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46039 states to 46039 states and 66642 transitions. [2022-11-03 04:10:52,443 INFO L78 Accepts]: Start accepts. Automaton has 46039 states and 66642 transitions. Word has length 565 [2022-11-03 04:10:52,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:52,444 INFO L495 AbstractCegarLoop]: Abstraction has 46039 states and 66642 transitions. [2022-11-03 04:10:52,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-03 04:10:52,444 INFO L276 IsEmpty]: Start isEmpty. Operand 46039 states and 66642 transitions. [2022-11-03 04:10:52,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2022-11-03 04:10:52,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:52,460 INFO L195 NwaCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:10:52,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 04:10:52,460 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:10:52,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:52,461 INFO L85 PathProgramCache]: Analyzing trace with hash 90879403, now seen corresponding path program 1 times [2022-11-03 04:10:52,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:52,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855133094] [2022-11-03 04:10:52,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:52,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:10:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:54,841 INFO L134 CoverageAnalysis]: Checked inductivity of 9855 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9851 trivial. 0 not checked. [2022-11-03 04:10:54,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:10:54,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855133094] [2022-11-03 04:10:54,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855133094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:54,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:10:54,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:10:54,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48423875] [2022-11-03 04:10:54,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:54,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:10:54,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:10:54,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:10:54,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:10:54,847 INFO L87 Difference]: Start difference. First operand 46039 states and 66642 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-03 04:10:57,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:11:04,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:11:07,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:07,272 INFO L93 Difference]: Finished difference Result 46085 states and 66695 transitions. [2022-11-03 04:11:07,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:11:07,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 571 [2022-11-03 04:11:07,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:07,492 INFO L225 Difference]: With dead ends: 46085 [2022-11-03 04:11:07,493 INFO L226 Difference]: Without dead ends: 46083 [2022-11-03 04:11:07,517 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 04:11:07,518 INFO L413 NwaCegarLoop]: 2768 mSDtfsCounter, 3078 mSDsluCounter, 6460 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3089 SdHoareTripleChecker+Valid, 8296 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:07,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3089 Valid, 8296 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1415 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2022-11-03 04:11:07,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46083 states. [2022-11-03 04:11:10,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46083 to 46083. [2022-11-03 04:11:10,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46083 states, 27956 states have (on average 1.3049792531120332) internal successors, (36482), 28290 states have internal predecessors, (36482), 14831 states have call successors, (14831), 3323 states have call predecessors, (14831), 3293 states have return successors, (15379), 14653 states have call predecessors, (15379), 14823 states have call successors, (15379) [2022-11-03 04:11:10,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46083 states to 46083 states and 66692 transitions. [2022-11-03 04:11:10,718 INFO L78 Accepts]: Start accepts. Automaton has 46083 states and 66692 transitions. Word has length 571 [2022-11-03 04:11:10,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:10,720 INFO L495 AbstractCegarLoop]: Abstraction has 46083 states and 66692 transitions. [2022-11-03 04:11:10,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-03 04:11:10,721 INFO L276 IsEmpty]: Start isEmpty. Operand 46083 states and 66692 transitions. [2022-11-03 04:11:10,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2022-11-03 04:11:10,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:10,749 INFO L195 NwaCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:11:10,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 04:11:10,750 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:11:10,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:10,750 INFO L85 PathProgramCache]: Analyzing trace with hash 966789977, now seen corresponding path program 1 times [2022-11-03 04:11:10,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:10,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308614225] [2022-11-03 04:11:10,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:10,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:13,068 INFO L134 CoverageAnalysis]: Checked inductivity of 9861 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9855 trivial. 0 not checked. [2022-11-03 04:11:13,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:13,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308614225] [2022-11-03 04:11:13,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308614225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:13,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:13,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:11:13,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114920682] [2022-11-03 04:11:13,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:13,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:11:13,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:13,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:11:13,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:11:13,072 INFO L87 Difference]: Start difference. First operand 46083 states and 66692 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-03 04:11:15,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:11:22,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:11:26,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:26,873 INFO L93 Difference]: Finished difference Result 46107 states and 66712 transitions. [2022-11-03 04:11:26,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:11:26,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 576 [2022-11-03 04:11:26,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:27,094 INFO L225 Difference]: With dead ends: 46107 [2022-11-03 04:11:27,094 INFO L226 Difference]: Without dead ends: 46105 [2022-11-03 04:11:27,117 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 04:11:27,118 INFO L413 NwaCegarLoop]: 3471 mSDtfsCounter, 3074 mSDsluCounter, 10917 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3084 SdHoareTripleChecker+Valid, 13003 SdHoareTripleChecker+Invalid, 1872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1868 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:27,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3084 Valid, 13003 Invalid, 1872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1868 Invalid, 2 Unknown, 0 Unchecked, 11.8s Time] [2022-11-03 04:11:27,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46105 states. [2022-11-03 04:11:30,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46105 to 46087. [2022-11-03 04:11:30,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46087 states, 27959 states have (on average 1.30494652884581) internal successors, (36485), 28293 states have internal predecessors, (36485), 14831 states have call successors, (14831), 3324 states have call predecessors, (14831), 3294 states have return successors, (15379), 14653 states have call predecessors, (15379), 14823 states have call successors, (15379) [2022-11-03 04:11:30,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46087 states to 46087 states and 66695 transitions. [2022-11-03 04:11:30,367 INFO L78 Accepts]: Start accepts. Automaton has 46087 states and 66695 transitions. Word has length 576 [2022-11-03 04:11:30,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:30,368 INFO L495 AbstractCegarLoop]: Abstraction has 46087 states and 66695 transitions. [2022-11-03 04:11:30,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-03 04:11:30,368 INFO L276 IsEmpty]: Start isEmpty. Operand 46087 states and 66695 transitions. [2022-11-03 04:11:30,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2022-11-03 04:11:30,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:30,387 INFO L195 NwaCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:11:30,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 04:11:30,388 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:11:30,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:30,389 INFO L85 PathProgramCache]: Analyzing trace with hash -657266931, now seen corresponding path program 1 times [2022-11-03 04:11:30,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:30,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447581500] [2022-11-03 04:11:30,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:30,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:31,729 INFO L134 CoverageAnalysis]: Checked inductivity of 9845 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9842 trivial. 0 not checked. [2022-11-03 04:11:31,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:31,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447581500] [2022-11-03 04:11:31,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447581500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:31,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:31,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:11:31,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706881049] [2022-11-03 04:11:31,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:31,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:11:31,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:31,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:11:31,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:11:31,734 INFO L87 Difference]: Start difference. First operand 46087 states and 66695 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2022-11-03 04:11:34,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:11:39,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:11:44,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:44,656 INFO L93 Difference]: Finished difference Result 92567 states and 134097 transitions. [2022-11-03 04:11:44,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:11:44,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) Word has length 575 [2022-11-03 04:11:44,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:44,894 INFO L225 Difference]: With dead ends: 92567 [2022-11-03 04:11:44,894 INFO L226 Difference]: Without dead ends: 61199 [2022-11-03 04:11:45,010 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 04:11:45,010 INFO L413 NwaCegarLoop]: 5094 mSDtfsCounter, 2812 mSDsluCounter, 3163 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2814 SdHoareTripleChecker+Valid, 7809 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:45,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2814 Valid, 7809 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1392 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2022-11-03 04:11:45,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61199 states. [2022-11-03 04:11:48,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61199 to 61119. [2022-11-03 04:11:48,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61119 states, 37101 states have (on average 1.3054904180480311) internal successors, (48435), 37547 states have internal predecessors, (48435), 19631 states have call successors, (19631), 4426 states have call predecessors, (19631), 4384 states have return successors, (20359), 19385 states have call predecessors, (20359), 19623 states have call successors, (20359) [2022-11-03 04:11:48,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61119 states to 61119 states and 88425 transitions. [2022-11-03 04:11:48,797 INFO L78 Accepts]: Start accepts. Automaton has 61119 states and 88425 transitions. Word has length 575 [2022-11-03 04:11:48,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:48,798 INFO L495 AbstractCegarLoop]: Abstraction has 61119 states and 88425 transitions. [2022-11-03 04:11:48,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2022-11-03 04:11:48,799 INFO L276 IsEmpty]: Start isEmpty. Operand 61119 states and 88425 transitions. [2022-11-03 04:11:48,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2022-11-03 04:11:48,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:48,823 INFO L195 NwaCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:11:48,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 04:11:48,824 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:11:48,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:48,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1652954572, now seen corresponding path program 1 times [2022-11-03 04:11:48,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:48,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097250024] [2022-11-03 04:11:48,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:48,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:50,882 INFO L134 CoverageAnalysis]: Checked inductivity of 9875 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9867 trivial. 0 not checked. [2022-11-03 04:11:50,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:50,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097250024] [2022-11-03 04:11:50,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097250024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:50,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:50,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:11:50,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648245019] [2022-11-03 04:11:50,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:50,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:11:50,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:50,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:11:50,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:11:50,886 INFO L87 Difference]: Start difference. First operand 61119 states and 88425 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-03 04:11:53,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:11:57,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:11:59,872 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 04:12:05,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:12:05,839 INFO L93 Difference]: Finished difference Result 61147 states and 88449 transitions. [2022-11-03 04:12:05,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:12:05,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 581 [2022-11-03 04:12:05,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:12:06,077 INFO L225 Difference]: With dead ends: 61147 [2022-11-03 04:12:06,078 INFO L226 Difference]: Without dead ends: 61145 [2022-11-03 04:12:06,099 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 04:12:06,100 INFO L413 NwaCegarLoop]: 3461 mSDtfsCounter, 3077 mSDsluCounter, 10896 mSDsCounter, 0 mSdLazyCounter, 1865 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3084 SdHoareTripleChecker+Valid, 12973 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1865 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:12:06,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3084 Valid, 12973 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1865 Invalid, 2 Unknown, 0 Unchecked, 12.1s Time] [2022-11-03 04:12:06,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61145 states. [2022-11-03 04:12:09,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61145 to 61123. [2022-11-03 04:12:09,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61123 states, 37104 states have (on average 1.3054657179818887) internal successors, (48438), 37550 states have internal predecessors, (48438), 19631 states have call successors, (19631), 4427 states have call predecessors, (19631), 4385 states have return successors, (20359), 19385 states have call predecessors, (20359), 19623 states have call successors, (20359) [2022-11-03 04:12:09,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61123 states to 61123 states and 88428 transitions. [2022-11-03 04:12:09,732 INFO L78 Accepts]: Start accepts. Automaton has 61123 states and 88428 transitions. Word has length 581 [2022-11-03 04:12:09,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:12:09,734 INFO L495 AbstractCegarLoop]: Abstraction has 61123 states and 88428 transitions. [2022-11-03 04:12:09,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-03 04:12:09,734 INFO L276 IsEmpty]: Start isEmpty. Operand 61123 states and 88428 transitions. [2022-11-03 04:12:09,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2022-11-03 04:12:09,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:12:09,758 INFO L195 NwaCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:12:09,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 04:12:09,759 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:12:09,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:12:09,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1372540167, now seen corresponding path program 1 times [2022-11-03 04:12:09,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:12:09,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333434532] [2022-11-03 04:12:09,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:12:09,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:12:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:12:12,218 INFO L134 CoverageAnalysis]: Checked inductivity of 9893 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9883 trivial. 0 not checked. [2022-11-03 04:12:12,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:12:12,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333434532] [2022-11-03 04:12:12,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333434532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:12:12,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:12:12,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:12:12,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80513385] [2022-11-03 04:12:12,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:12:12,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:12:12,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:12:12,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:12:12,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:12:12,222 INFO L87 Difference]: Start difference. First operand 61123 states and 88428 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2022-11-03 04:12:20,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:12:26,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:12:26,031 INFO L93 Difference]: Finished difference Result 61151 states and 88452 transitions. [2022-11-03 04:12:26,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:12:26,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) Word has length 586 [2022-11-03 04:12:26,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:12:26,273 INFO L225 Difference]: With dead ends: 61151 [2022-11-03 04:12:26,273 INFO L226 Difference]: Without dead ends: 61149 [2022-11-03 04:12:26,298 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 04:12:26,299 INFO L413 NwaCegarLoop]: 3461 mSDtfsCounter, 3077 mSDsluCounter, 10896 mSDsCounter, 0 mSdLazyCounter, 1866 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3083 SdHoareTripleChecker+Valid, 12973 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1866 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:12:26,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3083 Valid, 12973 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1866 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2022-11-03 04:12:26,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61149 states. [2022-11-03 04:12:29,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61149 to 61127. [2022-11-03 04:12:29,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61127 states, 37107 states have (on average 1.3054410219096126) internal successors, (48441), 37553 states have internal predecessors, (48441), 19631 states have call successors, (19631), 4428 states have call predecessors, (19631), 4386 states have return successors, (20359), 19385 states have call predecessors, (20359), 19623 states have call successors, (20359) [2022-11-03 04:12:30,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61127 states to 61127 states and 88431 transitions. [2022-11-03 04:12:30,210 INFO L78 Accepts]: Start accepts. Automaton has 61127 states and 88431 transitions. Word has length 586 [2022-11-03 04:12:30,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:12:30,211 INFO L495 AbstractCegarLoop]: Abstraction has 61127 states and 88431 transitions. [2022-11-03 04:12:30,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2022-11-03 04:12:30,211 INFO L276 IsEmpty]: Start isEmpty. Operand 61127 states and 88431 transitions. [2022-11-03 04:12:30,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2022-11-03 04:12:30,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:12:30,235 INFO L195 NwaCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 7, 6, 6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:30,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 04:12:30,235 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:12:30,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:12:30,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1135960085, now seen corresponding path program 1 times [2022-11-03 04:12:30,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:12:30,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225311365] [2022-11-03 04:12:30,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:12:30,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:12:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:12:32,173 INFO L134 CoverageAnalysis]: Checked inductivity of 9919 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9907 trivial. 0 not checked. [2022-11-03 04:12:32,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:12:32,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225311365] [2022-11-03 04:12:32,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225311365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:12:32,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:12:32,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:12:32,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124489692] [2022-11-03 04:12:32,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:12:32,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:12:32,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:12:32,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:12:32,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:12:32,176 INFO L87 Difference]: Start difference. First operand 61127 states and 88431 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (68), 3 states have call predecessors, (68), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-11-03 04:12:34,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:12:38,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:12:40,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:12:44,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []