./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/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 23f9845edcf139ee9434428d040789a6781b16714bf615b854712f008daec6fd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:36:15,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:36:15,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:36:15,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:36:15,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:36:15,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:36:15,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:36:15,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:36:15,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:36:15,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:36:15,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:36:15,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:36:15,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:36:15,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:36:15,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:36:15,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:36:15,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:36:15,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:36:15,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:36:15,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:36:15,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:36:15,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:36:15,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:36:15,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:36:15,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:36:15,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:36:15,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:36:15,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:36:15,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:36:15,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:36:15,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:36:15,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:36:15,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:36:15,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:36:15,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:36:15,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:36:15,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:36:15,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:36:15,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:36:15,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:36:15,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:36:15,454 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:36:15,493 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:36:15,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:36:15,494 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:36:15,495 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:36:15,496 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:36:15,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:36:15,496 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:36:15,496 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:36:15,497 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:36:15,497 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:36:15,498 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:36:15,498 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:36:15,498 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:36:15,499 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:36:15,499 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:36:15,499 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:36:15,499 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:36:15,500 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:36:15,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:36:15,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:36:15,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:36:15,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:36:15,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:36:15,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:36:15,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:36:15,504 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:36:15,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:36:15,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:36:15,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:36:15,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:36:15,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:36:15,505 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:36:15,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:36:15,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:36:15,506 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:36:15,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:36:15,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:36:15,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:36:15,507 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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23f9845edcf139ee9434428d040789a6781b16714bf615b854712f008daec6fd [2022-11-03 02:36:15,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:36:15,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:36:15,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:36:15,825 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:36:15,826 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:36:15,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2022-11-03 02:36:15,919 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/data/ab7900c77/4c6bc03fd56143ebb2eebcaff2548068/FLAG0910a5515 [2022-11-03 02:36:16,811 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:36:16,812 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2022-11-03 02:36:16,883 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/data/ab7900c77/4c6bc03fd56143ebb2eebcaff2548068/FLAG0910a5515 [2022-11-03 02:36:16,953 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/data/ab7900c77/4c6bc03fd56143ebb2eebcaff2548068 [2022-11-03 02:36:16,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:36:16,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:36:16,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:36:16,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:36:16,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:36:16,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:36:16" (1/1) ... [2022-11-03 02:36:16,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fc4effa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:16, skipping insertion in model container [2022-11-03 02:36:16,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:36:16" (1/1) ... [2022-11-03 02:36:16,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:36:17,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:36:19,994 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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338234,338247] [2022-11-03 02:36:19,997 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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338403,338416] [2022-11-03 02:36:19,997 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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338570,338583] [2022-11-03 02:36:19,998 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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338738,338751] [2022-11-03 02:36:20,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:36:20,081 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:36:20,542 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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338234,338247] [2022-11-03 02:36:20,542 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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338403,338416] [2022-11-03 02:36:20,543 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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338570,338583] [2022-11-03 02:36:20,543 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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338738,338751] [2022-11-03 02:36:20,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:36:20,733 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:36:20,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:20 WrapperNode [2022-11-03 02:36:20,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:36:20,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:36:20,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:36:20,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:36:20,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:20" (1/1) ... [2022-11-03 02:36:20,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:20" (1/1) ... [2022-11-03 02:36:21,060 INFO L138 Inliner]: procedures = 431, calls = 2260, calls flagged for inlining = 195, calls inlined = 179, statements flattened = 4820 [2022-11-03 02:36:21,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:36:21,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:36:21,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:36:21,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:36:21,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:20" (1/1) ... [2022-11-03 02:36:21,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:20" (1/1) ... [2022-11-03 02:36:21,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:20" (1/1) ... [2022-11-03 02:36:21,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:20" (1/1) ... [2022-11-03 02:36:21,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:20" (1/1) ... [2022-11-03 02:36:21,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:20" (1/1) ... [2022-11-03 02:36:21,378 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:20" (1/1) ... [2022-11-03 02:36:21,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:20" (1/1) ... [2022-11-03 02:36:21,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:36:21,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:36:21,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:36:21,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:36:21,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:20" (1/1) ... [2022-11-03 02:36:21,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:36:21,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:36:21,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:36:21,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:36:21,531 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_resume [2022-11-03 02:36:21,532 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_resume [2022-11-03 02:36:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 02:36:21,532 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 02:36:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:36:21,532 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:36:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 02:36:21,533 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 02:36:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_write_reg [2022-11-03 02:36:21,533 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_write_reg [2022-11-03 02:36:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:36:21,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:36:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_3 [2022-11-03 02:36:21,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_3 [2022-11-03 02:36:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_read8 [2022-11-03 02:36:21,534 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_read8 [2022-11-03 02:36:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:36:21,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:36:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 02:36:21,534 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 02:36:21,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_63 [2022-11-03 02:36:21,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_63 [2022-11-03 02:36:21,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_tlan_priv [2022-11-03 02:36:21,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_tlan_priv [2022-11-03 02:36:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_read_and_clear_stats [2022-11-03 02:36:21,536 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_read_and_clear_stats [2022-11-03 02:36:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_sync [2022-11-03 02:36:21,536 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_sync [2022-11-03 02:36:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 02:36:21,536 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 02:36:21,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:36:21,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:36:21,537 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 02:36:21,537 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 02:36:21,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:36:21,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:36:21,537 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 02:36:21,538 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 02:36:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:36:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:36:21,538 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:36:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_reset_lists [2022-11-03 02:36:21,539 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_reset_lists [2022-11-03 02:36:21,540 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_close [2022-11-03 02:36:21,540 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_close [2022-11-03 02:36:21,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_65 [2022-11-03 02:36:21,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_65 [2022-11-03 02:36:21,541 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:36:21,541 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:36:21,542 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_print [2022-11-03 02:36:21,542 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_print [2022-11-03 02:36:21,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-03 02:36:21,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-03 02:36:21,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_tlan_priv [2022-11-03 02:36:21,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_tlan_priv [2022-11-03 02:36:21,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pci_unregister_driver [2022-11-03 02:36:21,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pci_unregister_driver [2022-11-03 02:36:21,543 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_probe1 [2022-11-03 02:36:21,543 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_probe1 [2022-11-03 02:36:21,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:36:21,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:36:21,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:36:21,544 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 02:36:21,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 02:36:21,544 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 02:36:21,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 02:36:21,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 02:36:21,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 02:36:21,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 02:36:21,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 02:36:21,549 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_set_timer [2022-11-03 02:36:21,549 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_set_timer [2022-11-03 02:36:21,549 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_timer [2022-11-03 02:36:21,549 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_timer [2022-11-03 02:36:21,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_3_2 [2022-11-03 02:36:21,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_3_2 [2022-11-03 02:36:21,550 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_stop [2022-11-03 02:36:21,550 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_stop [2022-11-03 02:36:21,550 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 02:36:21,550 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 02:36:21,550 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 02:36:21,550 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 02:36:21,550 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_remove_one [2022-11-03 02:36:21,550 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_remove_one [2022-11-03 02:36:21,550 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_get_skb [2022-11-03 02:36:21,551 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_get_skb [2022-11-03 02:36:21,551 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_ee_send_byte [2022-11-03 02:36:21,551 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_ee_send_byte [2022-11-03 02:36:21,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:36:21,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:36:21,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:36:21,551 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2022-11-03 02:36:21,551 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2022-11-03 02:36:21,551 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_poll [2022-11-03 02:36:21,552 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_poll [2022-11-03 02:36:21,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-03 02:36:21,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-03 02:36:21,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:36:21,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:36:21,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:36:21,552 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:36:21,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:36:21,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:36:21,553 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:36:21,553 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:36:21,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:36:21,553 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_free_lists [2022-11-03 02:36:21,553 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_free_lists [2022-11-03 02:36:21,553 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-03 02:36:21,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-03 02:36:21,553 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:36:21,553 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:36:21,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 02:36:21,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 02:36:21,554 INFO L130 BoogieDeclarations]: Found specification of procedure outb_p [2022-11-03 02:36:21,554 INFO L138 BoogieDeclarations]: Found implementation of procedure outb_p [2022-11-03 02:36:21,554 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-11-03 02:36:21,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-11-03 02:36:21,554 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_store_skb [2022-11-03 02:36:21,554 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_store_skb [2022-11-03 02:36:21,554 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_tx_timeout [2022-11-03 02:36:21,554 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_tx_timeout [2022-11-03 02:36:21,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:36:21,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:36:21,555 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unregister_driver [2022-11-03 02:36:21,555 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unregister_driver [2022-11-03 02:36:21,555 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_power_up [2022-11-03 02:36:21,555 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_power_up [2022-11-03 02:36:21,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:36:21,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:36:21,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:36:21,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:36:21,555 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 02:36:21,556 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 02:36:21,556 INFO L130 BoogieDeclarations]: Found specification of procedure slow_down_io [2022-11-03 02:36:21,556 INFO L138 BoogieDeclarations]: Found implementation of procedure slow_down_io [2022-11-03 02:36:21,556 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_handle_interrupt [2022-11-03 02:36:21,556 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_handle_interrupt [2022-11-03 02:36:21,556 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_start [2022-11-03 02:36:21,556 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_start [2022-11-03 02:36:21,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 02:36:21,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 02:36:21,557 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_finish_auto_neg [2022-11-03 02:36:21,557 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_finish_auto_neg [2022-11-03 02:36:21,557 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 02:36:21,557 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 02:36:21,557 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:36:21,557 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:36:21,557 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2022-11-03 02:36:21,557 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2022-11-03 02:36:21,557 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_start_link [2022-11-03 02:36:21,557 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_start_link [2022-11-03 02:36:21,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:36:21,558 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_set_multicast_list [2022-11-03 02:36:21,558 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_set_multicast_list [2022-11-03 02:36:21,558 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 02:36:21,558 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 02:36:21,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:36:21,558 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-03 02:36:21,558 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-03 02:36:21,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_8_2 [2022-11-03 02:36:21,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_8_2 [2022-11-03 02:36:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:36:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_print_list [2022-11-03 02:36:21,559 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_print_list [2022-11-03 02:36:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_write16 [2022-11-03 02:36:21,559 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_write16 [2022-11-03 02:36:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-03 02:36:21,559 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-03 02:36:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:36:21,559 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:36:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-03 02:36:21,560 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-03 02:36:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:36:21,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:36:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-03 02:36:21,560 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-03 02:36:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_finish_reset [2022-11-03 02:36:21,560 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_finish_reset [2022-11-03 02:36:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_write32 [2022-11-03 02:36:21,561 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_write32 [2022-11-03 02:36:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 02:36:21,561 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 02:36:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:36:21,561 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:36:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_set_mac [2022-11-03 02:36:21,561 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_set_mac [2022-11-03 02:36:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-03 02:36:21,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-03 02:36:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_ee_send_start [2022-11-03 02:36:21,561 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_ee_send_start [2022-11-03 02:36:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_read32 [2022-11-03 02:36:21,562 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_read32 [2022-11-03 02:36:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:36:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_write8 [2022-11-03 02:36:21,562 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_write8 [2022-11-03 02:36:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:36:21,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:36:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_power_down [2022-11-03 02:36:21,562 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_power_down [2022-11-03 02:36:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-03 02:36:21,563 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-03 02:36:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_reset_adapter [2022-11-03 02:36:21,563 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_reset_adapter [2022-11-03 02:36:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_send_data [2022-11-03 02:36:21,563 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_send_data [2022-11-03 02:36:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_reset [2022-11-03 02:36:21,563 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_reset [2022-11-03 02:36:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_read_reg [2022-11-03 02:36:21,563 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_read_reg [2022-11-03 02:36:21,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:36:21,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:36:21,564 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_open [2022-11-03 02:36:21,564 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_open [2022-11-03 02:36:21,564 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-03 02:36:21,564 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-03 02:36:21,564 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-03 02:36:21,564 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-03 02:36:21,564 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-03 02:36:21,564 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-03 02:36:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:36:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-11-03 02:36:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-03 02:36:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-03 02:36:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:36:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:36:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-03 02:36:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-03 02:36:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-11-03 02:36:21,566 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-11-03 02:36:22,441 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:36:22,444 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:36:23,690 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:36:26,696 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6942: assume 0 == (tlan_eisa_probe_~tmp___1~5#1.base + tlan_eisa_probe_~tmp___1~5#1.offset) % 18446744073709551616; [2022-11-03 02:36:26,696 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6942: assume !(0 == (tlan_eisa_probe_~tmp___1~5#1.base + tlan_eisa_probe_~tmp___1~5#1.offset) % 18446744073709551616); [2022-11-03 02:36:26,696 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7042: assume tlan_eisa_probe_~ioaddr~0#1 <= 36863; [2022-11-03 02:36:26,696 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7042: assume !(tlan_eisa_probe_~ioaddr~0#1 <= 36863); [2022-11-03 02:36:26,697 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6976-2: SUMMARY for call tlan_eisa_probe_#t~ret340#1 := inb((if (3264 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 <= 2147483647 then (3264 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 else (3264 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 - 4294967296)); srcloc: null [2022-11-03 02:36:26,697 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6976: assume 16 == ~debug~0;havoc tlan_eisa_probe_#t~nondet339#1; [2022-11-03 02:36:26,697 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6976: assume !(16 == ~debug~0); [2022-11-03 02:36:26,697 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7044: assume 0 != (if 0 == ~debug~0 then 0 else (if 1 == ~debug~0 then 0 else ~bitwiseAnd(~debug~0, 16))); [2022-11-03 02:36:26,697 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7044: assume !(0 != (if 0 == ~debug~0 then 0 else (if 1 == ~debug~0 then 0 else ~bitwiseAnd(~debug~0, 16)))); [2022-11-03 02:36:26,697 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6947-1: tlan_eisa_probe_~tmp___2~2#1 := tlan_eisa_probe_#t~ret336#1;havoc tlan_eisa_probe_#t~ret336#1; [2022-11-03 02:36:26,698 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6947: SUMMARY for call tlan_eisa_probe_#t~ret336#1 := inw((if (3200 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 <= 2147483647 then (3200 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 else (3200 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 - 4294967296)); srcloc: null [2022-11-03 02:36:26,698 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7014: SUMMARY for call tlan_eisa_probe_#t~ret341#1 := tlan_probe1(0, 0, tlan_eisa_probe_~ioaddr~0#1, tlan_eisa_probe_~irq~0#1, 12, 0, 0); srcloc: null [2022-11-03 02:36:26,698 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6949: assume 4366 != tlan_eisa_probe_~tmp___2~2#1 % 65536 % 4294967296; [2022-11-03 02:36:26,698 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6949: assume !(4366 != tlan_eisa_probe_~tmp___2~2#1 % 65536 % 4294967296); [2022-11-03 02:36:26,698 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6983: tlan_eisa_probe_~tmp___4~0#1 := tlan_eisa_probe_#t~ret340#1;havoc tlan_eisa_probe_#t~ret340#1; [2022-11-03 02:36:26,698 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6951: SUMMARY for call __release_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16); srcloc: null [2022-11-03 02:36:26,699 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6918-1: assume 0 != (if 0 == ~debug~0 then 0 else (if 1 == ~debug~0 then 0 else ~bitwiseAnd(~debug~0, 16))); [2022-11-03 02:36:26,699 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6918-1: assume !(0 != (if 0 == ~debug~0 then 0 else (if 1 == ~debug~0 then 0 else ~bitwiseAnd(~debug~0, 16)))); [2022-11-03 02:36:26,699 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6986: assume 16 == tlan_eisa_probe_~tmp___4~0#1 % 256; [2022-11-03 02:36:26,699 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6986: assume !(16 == tlan_eisa_probe_~tmp___4~0#1 % 256); [2022-11-03 02:36:26,699 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6920-1: tlan_eisa_probe_~tmp~35#1 := tlan_eisa_probe_#t~ret330#1;havoc tlan_eisa_probe_#t~ret330#1;havoc tlan_eisa_probe_#t~nondet331#1; [2022-11-03 02:36:26,699 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6920: SUMMARY for call tlan_eisa_probe_#t~ret330#1 := inw((if (3200 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 <= 2147483647 then (3200 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 else (3200 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 - 4294967296)); srcloc: null [2022-11-03 02:36:26,700 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6987: tlan_eisa_probe_~irq~0#1 := 5; [2022-11-03 02:36:26,700 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7021: assume -2147483648 <= tlan_eisa_probe_#t~ret341#1 && tlan_eisa_probe_#t~ret341#1 <= 2147483647;tlan_eisa_probe_~rc~2#1 := tlan_eisa_probe_#t~ret341#1;havoc tlan_eisa_probe_#t~ret341#1; [2022-11-03 02:36:26,700 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6990: assume 32 == tlan_eisa_probe_~tmp___4~0#1 % 256; [2022-11-03 02:36:26,700 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6990: assume !(32 == tlan_eisa_probe_~tmp___4~0#1 % 256); [2022-11-03 02:36:26,700 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6957-1: tlan_eisa_probe_~device_id~1#1 := tlan_eisa_probe_#t~ret337#1;havoc tlan_eisa_probe_#t~ret337#1; [2022-11-03 02:36:26,700 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6957: SUMMARY for call tlan_eisa_probe_#t~ret337#1 := inw((if (3202 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 <= 2147483647 then (3202 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 else (3202 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 - 4294967296)); srcloc: null [2022-11-03 02:36:26,700 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6991: tlan_eisa_probe_~irq~0#1 := 9; [2022-11-03 02:36:26,701 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6925-1: assume 0 != (if 0 == ~debug~0 then 0 else (if 1 == ~debug~0 then 0 else ~bitwiseAnd(~debug~0, 16)));havoc tlan_eisa_probe_#t~nondet334#1; [2022-11-03 02:36:26,701 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6925-1: assume !(0 != (if 0 == ~debug~0 then 0 else (if 1 == ~debug~0 then 0 else ~bitwiseAnd(~debug~0, 16)))); [2022-11-03 02:36:26,701 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6959: assume 8433 != tlan_eisa_probe_~device_id~1#1 % 65536 % 4294967296 && 16625 != tlan_eisa_probe_~device_id~1#1 % 65536 % 4294967296; [2022-11-03 02:36:26,701 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6959: assume !(8433 != tlan_eisa_probe_~device_id~1#1 % 65536 % 4294967296 && 16625 != tlan_eisa_probe_~device_id~1#1 % 65536 % 4294967296); [2022-11-03 02:36:26,701 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6927-1: tlan_eisa_probe_~tmp___0~12#1 := tlan_eisa_probe_#t~ret332#1;havoc tlan_eisa_probe_#t~ret332#1;havoc tlan_eisa_probe_#t~nondet333#1; [2022-11-03 02:36:26,701 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6927: SUMMARY for call tlan_eisa_probe_#t~ret332#1 := inw((if (3202 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 <= 2147483647 then (3202 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 else (3202 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 - 4294967296)); srcloc: null [2022-11-03 02:36:26,702 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6994: assume 64 == tlan_eisa_probe_~tmp___4~0#1 % 256; [2022-11-03 02:36:26,702 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6994: assume !(64 == tlan_eisa_probe_~tmp___4~0#1 % 256); [2022-11-03 02:36:26,702 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6961: SUMMARY for call __release_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16); srcloc: null [2022-11-03 02:36:26,702 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6995: tlan_eisa_probe_~irq~0#1 := 10; [2022-11-03 02:36:26,702 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6998: assume 128 == tlan_eisa_probe_~tmp___4~0#1 % 256; [2022-11-03 02:36:26,702 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6998: assume !(128 == tlan_eisa_probe_~tmp___4~0#1 % 256); [2022-11-03 02:36:26,703 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6932-1: call tlan_eisa_probe_#t~ret335#1.base, tlan_eisa_probe_#t~ret335#1.offset := __request_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16, ~#tlan_signature~0.base, ~#tlan_signature~0.offset, 0);tlan_eisa_probe_~tmp___1~5#1.base, tlan_eisa_probe_~tmp___1~5#1.offset := tlan_eisa_probe_#t~ret335#1.base, tlan_eisa_probe_#t~ret335#1.offset;havoc tlan_eisa_probe_#t~ret335#1.base, tlan_eisa_probe_#t~ret335#1.offset; [2022-11-03 02:36:26,703 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6999: tlan_eisa_probe_~irq~0#1 := 11; [2022-11-03 02:36:26,703 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6967-1: tlan_eisa_probe_~tmp___3~1#1 := tlan_eisa_probe_#t~ret338#1;havoc tlan_eisa_probe_#t~ret338#1; [2022-11-03 02:36:26,703 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6967: SUMMARY for call tlan_eisa_probe_#t~ret338#1 := inb((if (3204 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 <= 2147483647 then (3204 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 else (3204 + tlan_eisa_probe_~ioaddr~0#1) % 4294967296 % 4294967296 - 4294967296)); srcloc: null [2022-11-03 02:36:26,703 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7033-1: tlan_eisa_probe_~ioaddr~0#1 := 4096 + tlan_eisa_probe_~ioaddr~0#1; [2022-11-03 02:36:26,703 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7002: assume 16 == ~debug~0;havoc tlan_eisa_probe_#t~nondet342#1; [2022-11-03 02:36:26,704 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7002: assume !(16 == ~debug~0); [2022-11-03 02:36:26,704 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6969: assume 1 != tlan_eisa_probe_~tmp___3~1#1 % 256 % 4294967296; [2022-11-03 02:36:26,704 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6969: assume !(1 != tlan_eisa_probe_~tmp___3~1#1 % 256 % 4294967296); [2022-11-03 02:36:26,704 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6971-1: assume 16 == ~debug~0;havoc tlan_eisa_probe_#t~nondet343#1; [2022-11-03 02:36:26,704 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6971-1: assume !(16 == ~debug~0); [2022-11-03 02:36:26,704 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6971: SUMMARY for call __release_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16); srcloc: null [2022-11-03 02:36:26,837 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:36:28,516 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:36:28,516 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:36:28,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:36:28 BoogieIcfgContainer [2022-11-03 02:36:28,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:36:28,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:36:28,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:36:28,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:36:28,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:36:16" (1/3) ... [2022-11-03 02:36:28,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce99751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:36:28, skipping insertion in model container [2022-11-03 02:36:28,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:20" (2/3) ... [2022-11-03 02:36:28,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce99751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:36:28, skipping insertion in model container [2022-11-03 02:36:28,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:36:28" (3/3) ... [2022-11-03 02:36:28,584 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2022-11-03 02:36:28,602 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:36:28,602 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 02:36:28,706 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:36:28,713 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;@7d49d891, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:36:28,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 02:36:28,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 1559 states, 847 states have (on average 1.2361275088547816) internal successors, (1047), 903 states have internal predecessors, (1047), 601 states have call successors, (601), 108 states have call predecessors, (601), 107 states have return successors, (597), 579 states have call predecessors, (597), 597 states have call successors, (597) [2022-11-03 02:36:28,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-03 02:36:28,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:28,733 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-03 02:36:28,734 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 02:36:28,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:28,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1793469295, now seen corresponding path program 1 times [2022-11-03 02:36:28,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:36:28,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105925235] [2022-11-03 02:36:28,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:28,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:36:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:29,636 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:36:29,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:36:29,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105925235] [2022-11-03 02:36:29,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105925235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:29,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:36:29,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:36:29,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357842106] [2022-11-03 02:36:29,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:29,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:36:29,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:36:29,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:36:29,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:36:29,690 INFO L87 Difference]: Start difference. First operand has 1559 states, 847 states have (on average 1.2361275088547816) internal successors, (1047), 903 states have internal predecessors, (1047), 601 states have call successors, (601), 108 states have call predecessors, (601), 107 states have return successors, (597), 579 states have call predecessors, (597), 597 states have call successors, (597) Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 02:36:32,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:36:36,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:36,332 INFO L93 Difference]: Finished difference Result 4146 states and 6158 transitions. [2022-11-03 02:36:36,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:36:36,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2022-11-03 02:36:36,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:36,377 INFO L225 Difference]: With dead ends: 4146 [2022-11-03 02:36:36,377 INFO L226 Difference]: Without dead ends: 2596 [2022-11-03 02:36:36,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:36:36,408 INFO L413 NwaCegarLoop]: 2734 mSDtfsCounter, 1816 mSDsluCounter, 7884 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 9873 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:36,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1829 Valid, 9873 Invalid, 1045 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1043 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-11-03 02:36:36,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2596 states. [2022-11-03 02:36:36,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2596 to 2589. [2022-11-03 02:36:36,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2589 states, 1412 states have (on average 1.2223796033994334) internal successors, (1726), 1502 states have internal predecessors, (1726), 984 states have call successors, (984), 191 states have call predecessors, (984), 190 states have return successors, (981), 950 states have call predecessors, (981), 981 states have call successors, (981) [2022-11-03 02:36:36,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 3691 transitions. [2022-11-03 02:36:36,816 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 3691 transitions. Word has length 38 [2022-11-03 02:36:36,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:36,818 INFO L495 AbstractCegarLoop]: Abstraction has 2589 states and 3691 transitions. [2022-11-03 02:36:36,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 02:36:36,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 3691 transitions. [2022-11-03 02:36:36,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-03 02:36:36,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:36,821 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-03 02:36:36,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:36:36,822 INFO L420 AbstractCegarLoop]: === Iteration 2 === 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 02:36:36,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:36,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1481465959, now seen corresponding path program 1 times [2022-11-03 02:36:36,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:36:36,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072918935] [2022-11-03 02:36:36,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:36,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:36:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:37,349 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:36:37,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:36:37,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072918935] [2022-11-03 02:36:37,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072918935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:37,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:36:37,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:36:37,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931912442] [2022-11-03 02:36:37,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:37,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:36:37,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:36:37,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:36:37,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:36:37,360 INFO L87 Difference]: Start difference. First operand 2589 states and 3691 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:36:39,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:36:43,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:43,242 INFO L93 Difference]: Finished difference Result 2602 states and 3701 transitions. [2022-11-03 02:36:43,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:36:43,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2022-11-03 02:36:43,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:43,260 INFO L225 Difference]: With dead ends: 2602 [2022-11-03 02:36:43,260 INFO L226 Difference]: Without dead ends: 2600 [2022-11-03 02:36:43,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:36:43,263 INFO L413 NwaCegarLoop]: 2724 mSDtfsCounter, 1801 mSDsluCounter, 7853 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 9832 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:43,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1812 Valid, 9832 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1043 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-11-03 02:36:43,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2022-11-03 02:36:43,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2593. [2022-11-03 02:36:43,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2593 states, 1415 states have (on average 1.2219081272084806) internal successors, (1729), 1505 states have internal predecessors, (1729), 984 states have call successors, (984), 192 states have call predecessors, (984), 191 states have return successors, (981), 950 states have call predecessors, (981), 981 states have call successors, (981) [2022-11-03 02:36:43,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2593 states to 2593 states and 3694 transitions. [2022-11-03 02:36:43,549 INFO L78 Accepts]: Start accepts. Automaton has 2593 states and 3694 transitions. Word has length 43 [2022-11-03 02:36:43,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:43,550 INFO L495 AbstractCegarLoop]: Abstraction has 2593 states and 3694 transitions. [2022-11-03 02:36:43,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:36:43,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2593 states and 3694 transitions. [2022-11-03 02:36:43,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-03 02:36:43,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:43,560 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-03 02:36:43,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:36:43,561 INFO L420 AbstractCegarLoop]: === Iteration 3 === 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 02:36:43,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:43,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1004724753, now seen corresponding path program 1 times [2022-11-03 02:36:43,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:36:43,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218679424] [2022-11-03 02:36:43,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:43,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:36:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:44,021 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:36:44,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:36:44,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218679424] [2022-11-03 02:36:44,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218679424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:44,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:36:44,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:36:44,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305499548] [2022-11-03 02:36:44,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:44,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:36:44,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:36:44,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:36:44,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:36:44,024 INFO L87 Difference]: Start difference. First operand 2593 states and 3694 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:36:46,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:36:50,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:50,208 INFO L93 Difference]: Finished difference Result 2606 states and 3704 transitions. [2022-11-03 02:36:50,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:36:50,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2022-11-03 02:36:50,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:50,224 INFO L225 Difference]: With dead ends: 2606 [2022-11-03 02:36:50,225 INFO L226 Difference]: Without dead ends: 2604 [2022-11-03 02:36:50,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:36:50,231 INFO L413 NwaCegarLoop]: 2724 mSDtfsCounter, 1801 mSDsluCounter, 7853 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1811 SdHoareTripleChecker+Valid, 9832 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:50,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1811 Valid, 9832 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1043 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-11-03 02:36:50,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2022-11-03 02:36:50,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2597. [2022-11-03 02:36:50,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2597 states, 1418 states have (on average 1.221438645980254) internal successors, (1732), 1508 states have internal predecessors, (1732), 984 states have call successors, (984), 193 states have call predecessors, (984), 192 states have return successors, (981), 950 states have call predecessors, (981), 981 states have call successors, (981) [2022-11-03 02:36:50,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2597 states to 2597 states and 3697 transitions. [2022-11-03 02:36:50,440 INFO L78 Accepts]: Start accepts. Automaton has 2597 states and 3697 transitions. Word has length 48 [2022-11-03 02:36:50,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:50,440 INFO L495 AbstractCegarLoop]: Abstraction has 2597 states and 3697 transitions. [2022-11-03 02:36:50,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:36:50,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2597 states and 3697 transitions. [2022-11-03 02:36:50,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-03 02:36:50,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:50,444 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 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] [2022-11-03 02:36:50,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:36:50,444 INFO L420 AbstractCegarLoop]: === Iteration 4 === 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 02:36:50,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:50,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1510648003, now seen corresponding path program 1 times [2022-11-03 02:36:50,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:36:50,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438886090] [2022-11-03 02:36:50,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:50,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:36:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:50,901 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-03 02:36:50,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:36:50,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438886090] [2022-11-03 02:36:50,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438886090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:50,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:36:50,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:36:50,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927260507] [2022-11-03 02:36:50,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:50,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:36:50,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:36:50,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:36:50,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:36:50,904 INFO L87 Difference]: Start difference. First operand 2597 states and 3697 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:36:53,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:36:57,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:57,102 INFO L93 Difference]: Finished difference Result 2610 states and 3707 transitions. [2022-11-03 02:36:57,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:36:57,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 63 [2022-11-03 02:36:57,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:57,130 INFO L225 Difference]: With dead ends: 2610 [2022-11-03 02:36:57,131 INFO L226 Difference]: Without dead ends: 2608 [2022-11-03 02:36:57,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:36:57,138 INFO L413 NwaCegarLoop]: 2724 mSDtfsCounter, 1795 mSDsluCounter, 7853 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1804 SdHoareTripleChecker+Valid, 9832 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:57,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1804 Valid, 9832 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1043 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-11-03 02:36:57,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2608 states. [2022-11-03 02:36:57,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2608 to 2601. [2022-11-03 02:36:57,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2601 states, 1421 states have (on average 1.2209711470795215) internal successors, (1735), 1511 states have internal predecessors, (1735), 984 states have call successors, (984), 194 states have call predecessors, (984), 193 states have return successors, (981), 950 states have call predecessors, (981), 981 states have call successors, (981) [2022-11-03 02:36:57,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 3700 transitions. [2022-11-03 02:36:57,316 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 3700 transitions. Word has length 63 [2022-11-03 02:36:57,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:57,316 INFO L495 AbstractCegarLoop]: Abstraction has 2601 states and 3700 transitions. [2022-11-03 02:36:57,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:36:57,317 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 3700 transitions. [2022-11-03 02:36:57,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 02:36:57,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:57,319 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 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] [2022-11-03 02:36:57,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:36:57,320 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 02:36:57,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:57,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1809059717, now seen corresponding path program 1 times [2022-11-03 02:36:57,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:36:57,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211218572] [2022-11-03 02:36:57,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:57,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:36:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:57,716 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-03 02:36:57,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:36:57,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211218572] [2022-11-03 02:36:57,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211218572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:57,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:36:57,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:36:57,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001139703] [2022-11-03 02:36:57,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:57,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:36:57,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:36:57,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:36:57,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:36:57,720 INFO L87 Difference]: Start difference. First operand 2601 states and 3700 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:37:00,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:03,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:03,597 INFO L93 Difference]: Finished difference Result 2614 states and 3710 transitions. [2022-11-03 02:37:03,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:37:03,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 68 [2022-11-03 02:37:03,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:03,614 INFO L225 Difference]: With dead ends: 2614 [2022-11-03 02:37:03,614 INFO L226 Difference]: Without dead ends: 2612 [2022-11-03 02:37:03,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:37:03,617 INFO L413 NwaCegarLoop]: 2724 mSDtfsCounter, 1795 mSDsluCounter, 7853 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 9832 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:03,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1803 Valid, 9832 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1043 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-03 02:37:03,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2612 states. [2022-11-03 02:37:03,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2612 to 2605. [2022-11-03 02:37:03,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 1424 states have (on average 1.220505617977528) internal successors, (1738), 1514 states have internal predecessors, (1738), 984 states have call successors, (984), 195 states have call predecessors, (984), 194 states have return successors, (981), 950 states have call predecessors, (981), 981 states have call successors, (981) [2022-11-03 02:37:03,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 3703 transitions. [2022-11-03 02:37:03,789 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 3703 transitions. Word has length 68 [2022-11-03 02:37:03,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:03,790 INFO L495 AbstractCegarLoop]: Abstraction has 2605 states and 3703 transitions. [2022-11-03 02:37:03,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:37:03,790 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 3703 transitions. [2022-11-03 02:37:03,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-03 02:37:03,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:03,792 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 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] [2022-11-03 02:37:03,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:37:03,792 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 02:37:03,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:03,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1760131651, now seen corresponding path program 1 times [2022-11-03 02:37:03,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:03,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030607237] [2022-11-03 02:37:03,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:03,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:04,127 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-03 02:37:04,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:04,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030607237] [2022-11-03 02:37:04,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030607237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:04,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:04,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:37:04,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073582501] [2022-11-03 02:37:04,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:04,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:37:04,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:04,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:37:04,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:37:04,130 INFO L87 Difference]: Start difference. First operand 2605 states and 3703 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:37:06,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:10,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:10,341 INFO L93 Difference]: Finished difference Result 2618 states and 3713 transitions. [2022-11-03 02:37:10,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:37:10,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 73 [2022-11-03 02:37:10,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:10,357 INFO L225 Difference]: With dead ends: 2618 [2022-11-03 02:37:10,358 INFO L226 Difference]: Without dead ends: 2616 [2022-11-03 02:37:10,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:37:10,360 INFO L413 NwaCegarLoop]: 2724 mSDtfsCounter, 1795 mSDsluCounter, 7853 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 9832 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:10,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1802 Valid, 9832 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1043 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-11-03 02:37:10,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2616 states. [2022-11-03 02:37:10,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2616 to 2609. [2022-11-03 02:37:10,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2609 states, 1427 states have (on average 1.2200420462508759) internal successors, (1741), 1517 states have internal predecessors, (1741), 984 states have call successors, (984), 196 states have call predecessors, (984), 195 states have return successors, (981), 950 states have call predecessors, (981), 981 states have call successors, (981) [2022-11-03 02:37:10,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 3706 transitions. [2022-11-03 02:37:10,537 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 3706 transitions. Word has length 73 [2022-11-03 02:37:10,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:10,537 INFO L495 AbstractCegarLoop]: Abstraction has 2609 states and 3706 transitions. [2022-11-03 02:37:10,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:37:10,538 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 3706 transitions. [2022-11-03 02:37:10,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 02:37:10,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:10,540 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 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] [2022-11-03 02:37:10,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:37:10,540 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 02:37:10,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:10,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1292725521, now seen corresponding path program 1 times [2022-11-03 02:37:10,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:10,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927804953] [2022-11-03 02:37:10,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:10,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:10,846 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-03 02:37:10,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:10,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927804953] [2022-11-03 02:37:10,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927804953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:10,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:10,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:37:10,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231665373] [2022-11-03 02:37:10,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:10,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:37:10,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:10,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:37:10,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:37:10,848 INFO L87 Difference]: Start difference. First operand 2609 states and 3706 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:37:13,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:17,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:17,532 INFO L93 Difference]: Finished difference Result 4783 states and 7079 transitions. [2022-11-03 02:37:17,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:37:17,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 68 [2022-11-03 02:37:17,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:17,601 INFO L225 Difference]: With dead ends: 4783 [2022-11-03 02:37:17,601 INFO L226 Difference]: Without dead ends: 4781 [2022-11-03 02:37:17,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:37:17,604 INFO L413 NwaCegarLoop]: 3098 mSDtfsCounter, 1894 mSDsluCounter, 9107 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1899 SdHoareTripleChecker+Valid, 11313 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:17,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1899 Valid, 11313 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1247 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-03 02:37:17,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4781 states. [2022-11-03 02:37:17,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4781 to 4768. [2022-11-03 02:37:17,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4768 states, 2603 states have (on average 1.215904725316942) internal successors, (3165), 2779 states have internal predecessors, (3165), 1787 states have call successors, (1787), 387 states have call predecessors, (1787), 375 states have return successors, (2115), 1692 states have call predecessors, (2115), 1781 states have call successors, (2115) [2022-11-03 02:37:17,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4768 states to 4768 states and 7067 transitions. [2022-11-03 02:37:17,972 INFO L78 Accepts]: Start accepts. Automaton has 4768 states and 7067 transitions. Word has length 68 [2022-11-03 02:37:17,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:17,972 INFO L495 AbstractCegarLoop]: Abstraction has 4768 states and 7067 transitions. [2022-11-03 02:37:17,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:37:17,973 INFO L276 IsEmpty]: Start isEmpty. Operand 4768 states and 7067 transitions. [2022-11-03 02:37:17,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-03 02:37:17,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:17,976 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 3, 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] [2022-11-03 02:37:17,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:37:17,977 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 02:37:17,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:17,977 INFO L85 PathProgramCache]: Analyzing trace with hash -2014147, now seen corresponding path program 1 times [2022-11-03 02:37:17,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:17,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534723816] [2022-11-03 02:37:17,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:17,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:18,346 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 02:37:18,346 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:18,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534723816] [2022-11-03 02:37:18,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534723816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:18,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:18,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:37:18,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226107561] [2022-11-03 02:37:18,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:18,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:37:18,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:18,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:37:18,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:37:18,349 INFO L87 Difference]: Start difference. First operand 4768 states and 7067 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:37:19,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:21,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:23,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:26,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:26,580 INFO L93 Difference]: Finished difference Result 4778 states and 7076 transitions. [2022-11-03 02:37:26,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:37:26,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2022-11-03 02:37:26,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:26,635 INFO L225 Difference]: With dead ends: 4778 [2022-11-03 02:37:26,635 INFO L226 Difference]: Without dead ends: 4776 [2022-11-03 02:37:26,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:37:26,638 INFO L413 NwaCegarLoop]: 1989 mSDtfsCounter, 2197 mSDsluCounter, 4435 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2201 SdHoareTripleChecker+Valid, 5948 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:26,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2201 Valid, 5948 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 731 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2022-11-03 02:37:26,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4776 states. [2022-11-03 02:37:26,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4776 to 4776. [2022-11-03 02:37:26,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4776 states, 2609 states have (on average 1.2154082023763895) internal successors, (3171), 2785 states have internal predecessors, (3171), 1787 states have call successors, (1787), 389 states have call predecessors, (1787), 377 states have return successors, (2115), 1692 states have call predecessors, (2115), 1781 states have call successors, (2115) [2022-11-03 02:37:27,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4776 states to 4776 states and 7073 transitions. [2022-11-03 02:37:27,029 INFO L78 Accepts]: Start accepts. Automaton has 4776 states and 7073 transitions. Word has length 83 [2022-11-03 02:37:27,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:27,030 INFO L495 AbstractCegarLoop]: Abstraction has 4776 states and 7073 transitions. [2022-11-03 02:37:27,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:37:27,031 INFO L276 IsEmpty]: Start isEmpty. Operand 4776 states and 7073 transitions. [2022-11-03 02:37:27,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-03 02:37:27,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:27,037 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 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] [2022-11-03 02:37:27,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:37:27,038 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:37:27,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:27,038 INFO L85 PathProgramCache]: Analyzing trace with hash 572555899, now seen corresponding path program 1 times [2022-11-03 02:37:27,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:27,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764671965] [2022-11-03 02:37:27,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:27,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:27,361 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-03 02:37:27,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:27,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764671965] [2022-11-03 02:37:27,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764671965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:27,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:27,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:37:27,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767554261] [2022-11-03 02:37:27,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:27,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:37:27,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:27,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:37:27,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:37:27,365 INFO L87 Difference]: Start difference. First operand 4776 states and 7073 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:37:29,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:33,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:33,249 INFO L93 Difference]: Finished difference Result 4796 states and 7090 transitions. [2022-11-03 02:37:33,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:37:33,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 88 [2022-11-03 02:37:33,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:33,274 INFO L225 Difference]: With dead ends: 4796 [2022-11-03 02:37:33,274 INFO L226 Difference]: Without dead ends: 4794 [2022-11-03 02:37:33,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:37:33,278 INFO L413 NwaCegarLoop]: 2525 mSDtfsCounter, 1795 mSDsluCounter, 7413 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1799 SdHoareTripleChecker+Valid, 9235 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:33,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1799 Valid, 9235 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 980 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-11-03 02:37:33,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4794 states. [2022-11-03 02:37:33,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4794 to 4790. [2022-11-03 02:37:33,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4790 states, 2619 states have (on average 1.214585719740359) internal successors, (3181), 2797 states have internal predecessors, (3181), 1787 states have call successors, (1787), 391 states have call predecessors, (1787), 381 states have return successors, (2117), 1694 states have call predecessors, (2117), 1781 states have call successors, (2117) [2022-11-03 02:37:33,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4790 states to 4790 states and 7085 transitions. [2022-11-03 02:37:33,657 INFO L78 Accepts]: Start accepts. Automaton has 4790 states and 7085 transitions. Word has length 88 [2022-11-03 02:37:33,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:33,658 INFO L495 AbstractCegarLoop]: Abstraction has 4790 states and 7085 transitions. [2022-11-03 02:37:33,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:37:33,659 INFO L276 IsEmpty]: Start isEmpty. Operand 4790 states and 7085 transitions. [2022-11-03 02:37:33,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-03 02:37:33,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:33,660 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 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] [2022-11-03 02:37:33,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:37:33,661 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 02:37:33,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:33,661 INFO L85 PathProgramCache]: Analyzing trace with hash 757516391, now seen corresponding path program 1 times [2022-11-03 02:37:33,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:33,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320173064] [2022-11-03 02:37:33,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:33,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-03 02:37:34,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:34,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320173064] [2022-11-03 02:37:34,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320173064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:34,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:34,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:37:34,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530252848] [2022-11-03 02:37:34,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:34,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:37:34,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:34,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:37:34,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:37:34,022 INFO L87 Difference]: Start difference. First operand 4790 states and 7085 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:37:36,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:39,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:39,764 INFO L93 Difference]: Finished difference Result 4804 states and 7096 transitions. [2022-11-03 02:37:39,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:37:39,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2022-11-03 02:37:39,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:39,787 INFO L225 Difference]: With dead ends: 4804 [2022-11-03 02:37:39,788 INFO L226 Difference]: Without dead ends: 4802 [2022-11-03 02:37:39,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:37:39,792 INFO L413 NwaCegarLoop]: 2525 mSDtfsCounter, 1801 mSDsluCounter, 7413 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1804 SdHoareTripleChecker+Valid, 9235 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:39,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1804 Valid, 9235 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 980 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-11-03 02:37:39,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4802 states. [2022-11-03 02:37:40,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4802 to 4798. [2022-11-03 02:37:40,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4798 states, 2625 states have (on average 1.2140952380952381) internal successors, (3187), 2803 states have internal predecessors, (3187), 1787 states have call successors, (1787), 393 states have call predecessors, (1787), 383 states have return successors, (2117), 1694 states have call predecessors, (2117), 1781 states have call successors, (2117) [2022-11-03 02:37:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4798 states to 4798 states and 7091 transitions. [2022-11-03 02:37:40,237 INFO L78 Accepts]: Start accepts. Automaton has 4798 states and 7091 transitions. Word has length 83 [2022-11-03 02:37:40,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:40,238 INFO L495 AbstractCegarLoop]: Abstraction has 4798 states and 7091 transitions. [2022-11-03 02:37:40,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:37:40,238 INFO L276 IsEmpty]: Start isEmpty. Operand 4798 states and 7091 transitions. [2022-11-03 02:37:40,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-03 02:37:40,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:40,241 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 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] [2022-11-03 02:37:40,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:37:40,241 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 02:37:40,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:40,242 INFO L85 PathProgramCache]: Analyzing trace with hash -7129071, now seen corresponding path program 1 times [2022-11-03 02:37:40,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:40,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809815932] [2022-11-03 02:37:40,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:40,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:40,544 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-03 02:37:40,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:40,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809815932] [2022-11-03 02:37:40,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809815932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:40,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:40,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:37:40,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954180916] [2022-11-03 02:37:40,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:40,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:37:40,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:40,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:37:40,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:37:40,547 INFO L87 Difference]: Start difference. First operand 4798 states and 7091 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:37:42,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:46,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:46,252 INFO L93 Difference]: Finished difference Result 4812 states and 7102 transitions. [2022-11-03 02:37:46,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:37:46,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 88 [2022-11-03 02:37:46,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:46,276 INFO L225 Difference]: With dead ends: 4812 [2022-11-03 02:37:46,276 INFO L226 Difference]: Without dead ends: 4808 [2022-11-03 02:37:46,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:37:46,281 INFO L413 NwaCegarLoop]: 2524 mSDtfsCounter, 1801 mSDsluCounter, 7411 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 9232 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:46,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1803 Valid, 9232 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 980 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-11-03 02:37:46,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4808 states. [2022-11-03 02:37:46,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4808 to 4804. [2022-11-03 02:37:46,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4804 states, 2630 states have (on average 1.2133079847908745) internal successors, (3191), 2807 states have internal predecessors, (3191), 1787 states have call successors, (1787), 395 states have call predecessors, (1787), 384 states have return successors, (2117), 1694 states have call predecessors, (2117), 1781 states have call successors, (2117) [2022-11-03 02:37:46,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4804 states to 4804 states and 7095 transitions. [2022-11-03 02:37:46,717 INFO L78 Accepts]: Start accepts. Automaton has 4804 states and 7095 transitions. Word has length 88 [2022-11-03 02:37:46,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:46,718 INFO L495 AbstractCegarLoop]: Abstraction has 4804 states and 7095 transitions. [2022-11-03 02:37:46,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:37:46,718 INFO L276 IsEmpty]: Start isEmpty. Operand 4804 states and 7095 transitions. [2022-11-03 02:37:46,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-03 02:37:46,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:46,720 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 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] [2022-11-03 02:37:46,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:37:46,720 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 02:37:46,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:46,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1556683367, now seen corresponding path program 1 times [2022-11-03 02:37:46,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:46,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292425504] [2022-11-03 02:37:46,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:46,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:47,017 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-03 02:37:47,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:47,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292425504] [2022-11-03 02:37:47,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292425504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:47,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:47,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:37:47,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778598985] [2022-11-03 02:37:47,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:47,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:37:47,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:47,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:37:47,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:37:47,020 INFO L87 Difference]: Start difference. First operand 4804 states and 7095 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:37:49,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:53,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:53,008 INFO L93 Difference]: Finished difference Result 4814 states and 7102 transitions. [2022-11-03 02:37:53,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:37:53,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 93 [2022-11-03 02:37:53,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:53,031 INFO L225 Difference]: With dead ends: 4814 [2022-11-03 02:37:53,031 INFO L226 Difference]: Without dead ends: 4723 [2022-11-03 02:37:53,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:37:53,036 INFO L413 NwaCegarLoop]: 2525 mSDtfsCounter, 1801 mSDsluCounter, 7413 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 9235 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:53,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1802 Valid, 9235 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 977 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-11-03 02:37:53,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4723 states. [2022-11-03 02:37:53,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4723 to 4719. [2022-11-03 02:37:53,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4719 states, 2581 states have (on average 1.2158078264238668) internal successors, (3138), 2756 states have internal predecessors, (3138), 1767 states have call successors, (1767), 378 states have call predecessors, (1767), 368 states have return successors, (2100), 1677 states have call predecessors, (2100), 1764 states have call successors, (2100) [2022-11-03 02:37:53,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4719 states to 4719 states and 7005 transitions. [2022-11-03 02:37:53,465 INFO L78 Accepts]: Start accepts. Automaton has 4719 states and 7005 transitions. Word has length 93 [2022-11-03 02:37:53,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:53,466 INFO L495 AbstractCegarLoop]: Abstraction has 4719 states and 7005 transitions. [2022-11-03 02:37:53,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:37:53,466 INFO L276 IsEmpty]: Start isEmpty. Operand 4719 states and 7005 transitions. [2022-11-03 02:37:53,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-03 02:37:53,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:53,469 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:53,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:37:53,469 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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 02:37:53,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:53,469 INFO L85 PathProgramCache]: Analyzing trace with hash -397249481, now seen corresponding path program 1 times [2022-11-03 02:37:53,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:53,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604105627] [2022-11-03 02:37:53,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:53,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:54,378 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-03 02:37:54,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:54,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604105627] [2022-11-03 02:37:54,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604105627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:54,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:54,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:37:54,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67178707] [2022-11-03 02:37:54,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:54,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:37:54,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:54,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:37:54,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:37:54,381 INFO L87 Difference]: Start difference. First operand 4719 states and 7005 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:37:57,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:09,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:09,184 INFO L93 Difference]: Finished difference Result 5888 states and 9289 transitions. [2022-11-03 02:38:09,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:38:09,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 117 [2022-11-03 02:38:09,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:09,212 INFO L225 Difference]: With dead ends: 5888 [2022-11-03 02:38:09,213 INFO L226 Difference]: Without dead ends: 5886 [2022-11-03 02:38:09,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:38:09,216 INFO L413 NwaCegarLoop]: 2537 mSDtfsCounter, 2462 mSDsluCounter, 6021 mSDsCounter, 0 mSdLazyCounter, 7863 mSolverCounterSat, 2217 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2878 SdHoareTripleChecker+Valid, 7735 SdHoareTripleChecker+Invalid, 10081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2217 IncrementalHoareTripleChecker+Valid, 7863 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:09,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2878 Valid, 7735 Invalid, 10081 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2217 Valid, 7863 Invalid, 1 Unknown, 0 Unchecked, 14.1s Time] [2022-11-03 02:38:09,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5886 states. [2022-11-03 02:38:09,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5886 to 5871. [2022-11-03 02:38:09,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5871 states, 3227 states have (on average 1.2147505422993492) internal successors, (3920), 3442 states have internal predecessors, (3920), 2171 states have call successors, (2171), 378 states have call predecessors, (2171), 470 states have return successors, (3173), 2161 states have call predecessors, (3173), 2168 states have call successors, (3173) [2022-11-03 02:38:09,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5871 states to 5871 states and 9264 transitions. [2022-11-03 02:38:09,830 INFO L78 Accepts]: Start accepts. Automaton has 5871 states and 9264 transitions. Word has length 117 [2022-11-03 02:38:09,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:09,897 INFO L495 AbstractCegarLoop]: Abstraction has 5871 states and 9264 transitions. [2022-11-03 02:38:09,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:38:09,897 INFO L276 IsEmpty]: Start isEmpty. Operand 5871 states and 9264 transitions. [2022-11-03 02:38:09,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-03 02:38:09,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:09,900 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:09,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:38:09,900 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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 02:38:09,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:09,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1685581393, now seen corresponding path program 1 times [2022-11-03 02:38:09,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:09,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753739256] [2022-11-03 02:38:09,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:09,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:11,009 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-03 02:38:11,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:11,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753739256] [2022-11-03 02:38:11,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753739256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:11,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:11,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:38:11,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329228605] [2022-11-03 02:38:11,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:11,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:38:11,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:11,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:38:11,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:38:11,012 INFO L87 Difference]: Start difference. First operand 5871 states and 9264 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 02:38:13,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:17,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:17,489 INFO L93 Difference]: Finished difference Result 7985 states and 12527 transitions. [2022-11-03 02:38:17,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:38:17,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 123 [2022-11-03 02:38:17,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:17,533 INFO L225 Difference]: With dead ends: 7985 [2022-11-03 02:38:17,533 INFO L226 Difference]: Without dead ends: 7983 [2022-11-03 02:38:17,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:38:17,540 INFO L413 NwaCegarLoop]: 2769 mSDtfsCounter, 1878 mSDsluCounter, 8324 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 10333 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:17,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1879 Valid, 10333 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1037 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-11-03 02:38:17,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7983 states. [2022-11-03 02:38:18,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7983 to 7936. [2022-11-03 02:38:18,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7936 states, 4350 states have (on average 1.2135632183908045) internal successors, (5279), 4646 states have internal predecessors, (5279), 2944 states have call successors, (2944), 556 states have call predecessors, (2944), 639 states have return successors, (4256), 2879 states have call predecessors, (4256), 2941 states have call successors, (4256) [2022-11-03 02:38:18,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7936 states to 7936 states and 12479 transitions. [2022-11-03 02:38:18,379 INFO L78 Accepts]: Start accepts. Automaton has 7936 states and 12479 transitions. Word has length 123 [2022-11-03 02:38:18,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:18,379 INFO L495 AbstractCegarLoop]: Abstraction has 7936 states and 12479 transitions. [2022-11-03 02:38:18,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 02:38:18,380 INFO L276 IsEmpty]: Start isEmpty. Operand 7936 states and 12479 transitions. [2022-11-03 02:38:18,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-03 02:38:18,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:18,383 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:18,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 02:38:18,384 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_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 02:38:18,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:18,384 INFO L85 PathProgramCache]: Analyzing trace with hash 194585408, now seen corresponding path program 1 times [2022-11-03 02:38:18,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:18,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971961279] [2022-11-03 02:38:18,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:18,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:18,922 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-03 02:38:18,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:18,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971961279] [2022-11-03 02:38:18,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971961279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:18,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:18,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:38:18,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207886343] [2022-11-03 02:38:18,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:18,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:38:18,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:18,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:38:18,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:38:18,925 INFO L87 Difference]: Start difference. First operand 7936 states and 12479 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:38:21,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:26,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:26,635 INFO L93 Difference]: Finished difference Result 9997 states and 15654 transitions. [2022-11-03 02:38:26,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:38:26,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 136 [2022-11-03 02:38:26,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:26,704 INFO L225 Difference]: With dead ends: 9997 [2022-11-03 02:38:26,704 INFO L226 Difference]: Without dead ends: 9995 [2022-11-03 02:38:26,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:38:26,716 INFO L413 NwaCegarLoop]: 3388 mSDtfsCounter, 2214 mSDsluCounter, 9483 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2215 SdHoareTripleChecker+Valid, 11875 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:26,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2215 Valid, 11875 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1404 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-11-03 02:38:26,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9995 states. [2022-11-03 02:38:27,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9995 to 9948. [2022-11-03 02:38:27,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9948 states, 5443 states have (on average 1.2125665993018555) internal successors, (6600), 5818 states have internal predecessors, (6600), 3695 states have call successors, (3695), 733 states have call predecessors, (3695), 807 states have return successors, (5311), 3576 states have call predecessors, (5311), 3692 states have call successors, (5311) [2022-11-03 02:38:27,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9948 states to 9948 states and 15606 transitions. [2022-11-03 02:38:27,923 INFO L78 Accepts]: Start accepts. Automaton has 9948 states and 15606 transitions. Word has length 136 [2022-11-03 02:38:27,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:27,924 INFO L495 AbstractCegarLoop]: Abstraction has 9948 states and 15606 transitions. [2022-11-03 02:38:27,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:38:27,924 INFO L276 IsEmpty]: Start isEmpty. Operand 9948 states and 15606 transitions. [2022-11-03 02:38:27,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-03 02:38:27,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:27,931 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:38:27,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 02:38:27,932 INFO L420 AbstractCegarLoop]: === Iteration 16 === 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 02:38:27,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:27,932 INFO L85 PathProgramCache]: Analyzing trace with hash -2010593181, now seen corresponding path program 1 times [2022-11-03 02:38:27,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:27,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812721873] [2022-11-03 02:38:27,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:27,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:28,776 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-11-03 02:38:28,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:28,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812721873] [2022-11-03 02:38:28,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812721873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:28,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:28,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:38:28,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241245980] [2022-11-03 02:38:28,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:28,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:38:28,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:28,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:38:28,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:38:28,779 INFO L87 Difference]: Start difference. First operand 9948 states and 15606 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:38:31,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:34,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:34,261 INFO L93 Difference]: Finished difference Result 19902 states and 31279 transitions. [2022-11-03 02:38:34,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:38:34,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 175 [2022-11-03 02:38:34,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:34,335 INFO L225 Difference]: With dead ends: 19902 [2022-11-03 02:38:34,335 INFO L226 Difference]: Without dead ends: 9970 [2022-11-03 02:38:34,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:38:34,462 INFO L413 NwaCegarLoop]: 1988 mSDtfsCounter, 8 mSDsluCounter, 4438 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 5952 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:34,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 5952 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 723 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-11-03 02:38:34,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9970 states. [2022-11-03 02:38:35,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9970 to 9952. [2022-11-03 02:38:35,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9952 states, 5447 states have (on average 1.2124105011933175) internal successors, (6604), 5822 states have internal predecessors, (6604), 3695 states have call successors, (3695), 733 states have call predecessors, (3695), 807 states have return successors, (5311), 3576 states have call predecessors, (5311), 3692 states have call successors, (5311) [2022-11-03 02:38:35,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9952 states to 9952 states and 15610 transitions. [2022-11-03 02:38:35,305 INFO L78 Accepts]: Start accepts. Automaton has 9952 states and 15610 transitions. Word has length 175 [2022-11-03 02:38:35,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:35,306 INFO L495 AbstractCegarLoop]: Abstraction has 9952 states and 15610 transitions. [2022-11-03 02:38:35,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:38:35,306 INFO L276 IsEmpty]: Start isEmpty. Operand 9952 states and 15610 transitions. [2022-11-03 02:38:35,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-03 02:38:35,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:35,313 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:38:35,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 02:38:35,313 INFO L420 AbstractCegarLoop]: === Iteration 17 === 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 02:38:35,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:35,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2036884641, now seen corresponding path program 1 times [2022-11-03 02:38:35,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:35,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122109349] [2022-11-03 02:38:35,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:35,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:38,136 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 5 proven. 28 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-03 02:38:38,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:38,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122109349] [2022-11-03 02:38:38,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122109349] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:38:38,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878304614] [2022-11-03 02:38:38,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:38,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:38,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:38:38,150 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:38:38,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:38:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:39,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 2789 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 02:38:39,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:39,699 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-03 02:38:39,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:38:39,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878304614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:39,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:38:39,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 16 [2022-11-03 02:38:39,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399055271] [2022-11-03 02:38:39,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:39,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 02:38:39,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:39,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 02:38:39,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:38:39,703 INFO L87 Difference]: Start difference. First operand 9952 states and 15610 transitions. Second operand has 11 states, 8 states have (on average 9.5) internal successors, (76), 9 states have internal predecessors, (76), 5 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (31), 6 states have call predecessors, (31), 5 states have call successors, (31) [2022-11-03 02:38:42,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:50,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:50,684 INFO L93 Difference]: Finished difference Result 20300 states and 31873 transitions. [2022-11-03 02:38:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:38:50,685 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 9.5) internal successors, (76), 9 states have internal predecessors, (76), 5 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (31), 6 states have call predecessors, (31), 5 states have call successors, (31) Word has length 186 [2022-11-03 02:38:50,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:50,763 INFO L225 Difference]: With dead ends: 20300 [2022-11-03 02:38:50,763 INFO L226 Difference]: Without dead ends: 10360 [2022-11-03 02:38:50,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-11-03 02:38:50,879 INFO L413 NwaCegarLoop]: 2059 mSDtfsCounter, 76 mSDsluCounter, 20508 mSDsCounter, 0 mSdLazyCounter, 2978 mSolverCounterSat, 51 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 20356 SdHoareTripleChecker+Invalid, 3030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2978 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:50,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 20356 Invalid, 3030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2978 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2022-11-03 02:38:50,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10360 states. [2022-11-03 02:38:51,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10360 to 9984. [2022-11-03 02:38:52,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9984 states, 5467 states have (on average 1.2116334369855497) internal successors, (6624), 5842 states have internal predecessors, (6624), 3703 states have call successors, (3703), 733 states have call predecessors, (3703), 811 states have return successors, (5323), 3588 states have call predecessors, (5323), 3700 states have call successors, (5323) [2022-11-03 02:38:52,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9984 states to 9984 states and 15650 transitions. [2022-11-03 02:38:52,096 INFO L78 Accepts]: Start accepts. Automaton has 9984 states and 15650 transitions. Word has length 186 [2022-11-03 02:38:52,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:52,097 INFO L495 AbstractCegarLoop]: Abstraction has 9984 states and 15650 transitions. [2022-11-03 02:38:52,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 9.5) internal successors, (76), 9 states have internal predecessors, (76), 5 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (31), 6 states have call predecessors, (31), 5 states have call successors, (31) [2022-11-03 02:38:52,097 INFO L276 IsEmpty]: Start isEmpty. Operand 9984 states and 15650 transitions. [2022-11-03 02:38:52,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-03 02:38:52,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:52,103 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:38:52,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:52,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-03 02:38:52,317 INFO L420 AbstractCegarLoop]: === Iteration 18 === 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 02:38:52,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:52,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1879430989, now seen corresponding path program 1 times [2022-11-03 02:38:52,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:52,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588243567] [2022-11-03 02:38:52,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:52,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:52,559 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-03 02:38:52,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:52,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588243567] [2022-11-03 02:38:52,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588243567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:52,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:52,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:38:52,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777659075] [2022-11-03 02:38:52,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:52,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:38:52,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:52,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:38:52,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:52,562 INFO L87 Difference]: Start difference. First operand 9984 states and 15650 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 02:38:54,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:57,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:57,959 INFO L93 Difference]: Finished difference Result 20042 states and 31429 transitions. [2022-11-03 02:38:57,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:38:57,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 189 [2022-11-03 02:38:57,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:58,025 INFO L225 Difference]: With dead ends: 20042 [2022-11-03 02:38:58,025 INFO L226 Difference]: Without dead ends: 10074 [2022-11-03 02:38:58,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:58,120 INFO L413 NwaCegarLoop]: 1993 mSDtfsCounter, 27 mSDsluCounter, 2189 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3953 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:58,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3953 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 481 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-03 02:38:58,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10074 states. [2022-11-03 02:38:59,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10074 to 10048. [2022-11-03 02:38:59,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10048 states, 5515 states have (on average 1.2112420670897552) internal successors, (6680), 5886 states have internal predecessors, (6680), 3719 states have call successors, (3719), 733 states have call predecessors, (3719), 811 states have return successors, (5339), 3604 states have call predecessors, (5339), 3716 states have call successors, (5339) [2022-11-03 02:38:59,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10048 states to 10048 states and 15738 transitions. [2022-11-03 02:38:59,186 INFO L78 Accepts]: Start accepts. Automaton has 10048 states and 15738 transitions. Word has length 189 [2022-11-03 02:38:59,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:59,186 INFO L495 AbstractCegarLoop]: Abstraction has 10048 states and 15738 transitions. [2022-11-03 02:38:59,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 02:38:59,186 INFO L276 IsEmpty]: Start isEmpty. Operand 10048 states and 15738 transitions. [2022-11-03 02:38:59,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-03 02:38:59,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:59,193 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:59,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 02:38:59,194 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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 02:38:59,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:59,194 INFO L85 PathProgramCache]: Analyzing trace with hash -938278624, now seen corresponding path program 1 times [2022-11-03 02:38:59,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:59,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317584942] [2022-11-03 02:38:59,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:59,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 5 proven. 28 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-03 02:39:01,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:39:01,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317584942] [2022-11-03 02:39:01,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317584942] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:39:01,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914137291] [2022-11-03 02:39:01,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:01,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:39:01,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:39:01,193 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:39:01,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:39:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:02,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 2825 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-03 02:39:02,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:39:02,546 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-03 02:39:02,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:39:02,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914137291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:39:02,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:39:02,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 17 [2022-11-03 02:39:02,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547686479] [2022-11-03 02:39:02,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:39:02,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 02:39:02,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:39:02,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 02:39:02,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:39:02,549 INFO L87 Difference]: Start difference. First operand 10048 states and 15738 transitions. Second operand has 12 states, 9 states have (on average 8.88888888888889) internal successors, (80), 10 states have internal predecessors, (80), 6 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (32), 7 states have call predecessors, (32), 6 states have call successors, (32) [2022-11-03 02:39:04,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:06,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:08,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:11,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:13,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:15,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:17,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:19,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:21,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:23,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:26,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:28,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:29,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:31,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:33,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:35,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:37,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:40,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:42,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:50,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:39:50,240 INFO L93 Difference]: Finished difference Result 20600 states and 32329 transitions. [2022-11-03 02:39:50,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 02:39:50,240 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 8.88888888888889) internal successors, (80), 10 states have internal predecessors, (80), 6 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (32), 7 states have call predecessors, (32), 6 states have call successors, (32) Word has length 192 [2022-11-03 02:39:50,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:39:50,288 INFO L225 Difference]: With dead ends: 20600 [2022-11-03 02:39:50,288 INFO L226 Difference]: Without dead ends: 10564 [2022-11-03 02:39:50,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:39:50,352 INFO L413 NwaCegarLoop]: 2135 mSDtfsCounter, 141 mSDsluCounter, 23506 mSDsCounter, 0 mSdLazyCounter, 3297 mSolverCounterSat, 60 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 23162 SdHoareTripleChecker+Invalid, 3373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 3297 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:39:50,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 23162 Invalid, 3373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 3297 Invalid, 16 Unknown, 0 Unchecked, 46.5s Time] [2022-11-03 02:39:50,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10564 states. [2022-11-03 02:39:51,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10564 to 10048. [2022-11-03 02:39:51,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10048 states, 5515 states have (on average 1.2112420670897552) internal successors, (6680), 5886 states have internal predecessors, (6680), 3719 states have call successors, (3719), 733 states have call predecessors, (3719), 811 states have return successors, (5347), 3604 states have call predecessors, (5347), 3716 states have call successors, (5347) [2022-11-03 02:39:51,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10048 states to 10048 states and 15746 transitions. [2022-11-03 02:39:51,333 INFO L78 Accepts]: Start accepts. Automaton has 10048 states and 15746 transitions. Word has length 192 [2022-11-03 02:39:51,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:39:51,333 INFO L495 AbstractCegarLoop]: Abstraction has 10048 states and 15746 transitions. [2022-11-03 02:39:51,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 8.88888888888889) internal successors, (80), 10 states have internal predecessors, (80), 6 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (32), 7 states have call predecessors, (32), 6 states have call successors, (32) [2022-11-03 02:39:51,334 INFO L276 IsEmpty]: Start isEmpty. Operand 10048 states and 15746 transitions. [2022-11-03 02:39:51,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-11-03 02:39:51,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:51,341 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 8, 7, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:39:51,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:39:51,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:39:51,569 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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 02:39:51,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:51,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1603662739, now seen corresponding path program 1 times [2022-11-03 02:39:51,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:51,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565326393] [2022-11-03 02:39:51,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:51,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:51,959 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2022-11-03 02:39:51,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:39:51,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565326393] [2022-11-03 02:39:51,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565326393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:39:51,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:39:51,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:39:51,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143399137] [2022-11-03 02:39:51,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:39:51,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:39:51,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:39:51,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:39:51,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:39:51,963 INFO L87 Difference]: Start difference. First operand 10048 states and 15746 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-03 02:39:54,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:57,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:39:57,629 INFO L93 Difference]: Finished difference Result 20138 states and 31573 transitions. [2022-11-03 02:39:57,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:39:57,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 226 [2022-11-03 02:39:57,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:39:57,692 INFO L225 Difference]: With dead ends: 20138 [2022-11-03 02:39:57,692 INFO L226 Difference]: Without dead ends: 10106 [2022-11-03 02:39:57,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:39:57,776 INFO L413 NwaCegarLoop]: 2003 mSDtfsCounter, 31 mSDsluCounter, 4432 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 5968 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:39:57,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 5968 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 728 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-11-03 02:39:57,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10106 states. [2022-11-03 02:39:58,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10106 to 10052. [2022-11-03 02:39:58,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10052 states, 5519 states have (on average 1.2110889653922812) internal successors, (6684), 5890 states have internal predecessors, (6684), 3719 states have call successors, (3719), 733 states have call predecessors, (3719), 811 states have return successors, (5347), 3604 states have call predecessors, (5347), 3716 states have call successors, (5347) [2022-11-03 02:39:58,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10052 states to 10052 states and 15750 transitions. [2022-11-03 02:39:58,578 INFO L78 Accepts]: Start accepts. Automaton has 10052 states and 15750 transitions. Word has length 226 [2022-11-03 02:39:58,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:39:58,578 INFO L495 AbstractCegarLoop]: Abstraction has 10052 states and 15750 transitions. [2022-11-03 02:39:58,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-03 02:39:58,578 INFO L276 IsEmpty]: Start isEmpty. Operand 10052 states and 15750 transitions. [2022-11-03 02:39:58,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-03 02:39:58,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:58,584 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 8, 7, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:39:58,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 02:39:58,585 INFO L420 AbstractCegarLoop]: === Iteration 21 === 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 02:39:58,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:58,585 INFO L85 PathProgramCache]: Analyzing trace with hash -685565444, now seen corresponding path program 1 times [2022-11-03 02:39:58,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:58,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665727034] [2022-11-03 02:39:58,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:58,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:59,071 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2022-11-03 02:39:59,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:39:59,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665727034] [2022-11-03 02:39:59,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665727034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:39:59,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:39:59,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:39:59,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450922290] [2022-11-03 02:39:59,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:39:59,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:39:59,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:39:59,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:39:59,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:39:59,076 INFO L87 Difference]: Start difference. First operand 10052 states and 15750 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-03 02:40:01,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:03,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:40:03,667 INFO L93 Difference]: Finished difference Result 17841 states and 27959 transitions. [2022-11-03 02:40:03,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:40:03,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 222 [2022-11-03 02:40:03,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:40:03,709 INFO L225 Difference]: With dead ends: 17841 [2022-11-03 02:40:03,709 INFO L226 Difference]: Without dead ends: 7805 [2022-11-03 02:40:03,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:40:03,778 INFO L413 NwaCegarLoop]: 2016 mSDtfsCounter, 36 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 3995 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:40:03,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 3995 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 473 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-11-03 02:40:03,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7805 states. [2022-11-03 02:40:04,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7805 to 7736. [2022-11-03 02:40:04,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7736 states, 4255 states have (on average 1.2079905992949471) internal successors, (5140), 4529 states have internal predecessors, (5140), 2844 states have call successors, (2844), 548 states have call predecessors, (2844), 634 states have return successors, (4115), 2789 states have call predecessors, (4115), 2841 states have call successors, (4115) [2022-11-03 02:40:04,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7736 states to 7736 states and 12099 transitions. [2022-11-03 02:40:04,514 INFO L78 Accepts]: Start accepts. Automaton has 7736 states and 12099 transitions. Word has length 222 [2022-11-03 02:40:04,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:40:04,515 INFO L495 AbstractCegarLoop]: Abstraction has 7736 states and 12099 transitions. [2022-11-03 02:40:04,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-03 02:40:04,515 INFO L276 IsEmpty]: Start isEmpty. Operand 7736 states and 12099 transitions. [2022-11-03 02:40:04,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-11-03 02:40:04,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:40:04,518 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 7, 7, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:40:04,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-03 02:40:04,518 INFO L420 AbstractCegarLoop]: === Iteration 22 === 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 02:40:04,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:40:04,519 INFO L85 PathProgramCache]: Analyzing trace with hash -414158189, now seen corresponding path program 1 times [2022-11-03 02:40:04,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:40:04,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97119518] [2022-11-03 02:40:04,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:40:04,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:40:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:40:05,413 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2022-11-03 02:40:05,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:40:05,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97119518] [2022-11-03 02:40:05,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97119518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:40:05,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:40:05,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:40:05,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630520324] [2022-11-03 02:40:05,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:40:05,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:40:05,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:40:05,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:40:05,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:40:05,417 INFO L87 Difference]: Start difference. First operand 7736 states and 12099 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (38), 4 states have call predecessors, (38), 2 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-03 02:40:07,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:17,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:40:17,008 INFO L93 Difference]: Finished difference Result 7787 states and 12156 transitions. [2022-11-03 02:40:17,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:40:17,011 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (38), 4 states have call predecessors, (38), 2 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 220 [2022-11-03 02:40:17,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:40:17,044 INFO L225 Difference]: With dead ends: 7787 [2022-11-03 02:40:17,044 INFO L226 Difference]: Without dead ends: 7748 [2022-11-03 02:40:17,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:40:17,051 INFO L413 NwaCegarLoop]: 2554 mSDtfsCounter, 2610 mSDsluCounter, 6901 mSDsCounter, 0 mSdLazyCounter, 4707 mSolverCounterSat, 688 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2930 SdHoareTripleChecker+Valid, 8658 SdHoareTripleChecker+Invalid, 5396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 688 IncrementalHoareTripleChecker+Valid, 4707 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:40:17,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2930 Valid, 8658 Invalid, 5396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [688 Valid, 4707 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2022-11-03 02:40:17,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7748 states. [2022-11-03 02:40:17,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7748 to 7735. [2022-11-03 02:40:17,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7735 states, 4255 states have (on average 1.2072855464159813) internal successors, (5137), 4528 states have internal predecessors, (5137), 2843 states have call successors, (2843), 548 states have call predecessors, (2843), 634 states have return successors, (4114), 2789 states have call predecessors, (4114), 2840 states have call successors, (4114) [2022-11-03 02:40:17,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7735 states to 7735 states and 12094 transitions. [2022-11-03 02:40:17,613 INFO L78 Accepts]: Start accepts. Automaton has 7735 states and 12094 transitions. Word has length 220 [2022-11-03 02:40:17,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:40:17,614 INFO L495 AbstractCegarLoop]: Abstraction has 7735 states and 12094 transitions. [2022-11-03 02:40:17,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (38), 4 states have call predecessors, (38), 2 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-03 02:40:17,615 INFO L276 IsEmpty]: Start isEmpty. Operand 7735 states and 12094 transitions. [2022-11-03 02:40:17,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2022-11-03 02:40:17,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:40:17,626 INFO L195 NwaCegarLoop]: trace histogram [25, 13, 11, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:40:17,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-03 02:40:17,626 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_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 02:40:17,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:40:17,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1878924571, now seen corresponding path program 1 times [2022-11-03 02:40:17,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:40:17,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816892664] [2022-11-03 02:40:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:40:17,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:40:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:40:17,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1177 trivial. 0 not checked. [2022-11-03 02:40:17,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:40:17,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816892664] [2022-11-03 02:40:17,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816892664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:40:17,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:40:17,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:40:17,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136190896] [2022-11-03 02:40:17,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:40:17,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:40:17,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:40:17,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:40:17,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:40:17,966 INFO L87 Difference]: Start difference. First operand 7735 states and 12094 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-03 02:40:20,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:23,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:40:23,192 INFO L93 Difference]: Finished difference Result 10037 states and 15680 transitions. [2022-11-03 02:40:23,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:40:23,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 466 [2022-11-03 02:40:23,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:40:23,227 INFO L225 Difference]: With dead ends: 10037 [2022-11-03 02:40:23,227 INFO L226 Difference]: Without dead ends: 7887 [2022-11-03 02:40:23,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:40:23,246 INFO L413 NwaCegarLoop]: 2028 mSDtfsCounter, 189 mSDsluCounter, 2184 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 3980 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:40:23,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 3980 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 474 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-03 02:40:23,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7887 states. [2022-11-03 02:40:23,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7887 to 7846. [2022-11-03 02:40:23,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7846 states, 4321 states have (on average 1.20735940754455) internal successors, (5217), 4598 states have internal predecessors, (5217), 2873 states have call successors, (2873), 563 states have call predecessors, (2873), 649 states have return successors, (4149), 2818 states have call predecessors, (4149), 2870 states have call successors, (4149) [2022-11-03 02:40:23,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7846 states to 7846 states and 12239 transitions. [2022-11-03 02:40:23,814 INFO L78 Accepts]: Start accepts. Automaton has 7846 states and 12239 transitions. Word has length 466 [2022-11-03 02:40:23,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:40:23,815 INFO L495 AbstractCegarLoop]: Abstraction has 7846 states and 12239 transitions. [2022-11-03 02:40:23,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-03 02:40:23,815 INFO L276 IsEmpty]: Start isEmpty. Operand 7846 states and 12239 transitions. [2022-11-03 02:40:23,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2022-11-03 02:40:23,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:40:23,826 INFO L195 NwaCegarLoop]: trace histogram [19, 13, 13, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 7, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:40:23,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-03 02:40:23,827 INFO L420 AbstractCegarLoop]: === Iteration 24 === 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 02:40:23,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:40:23,828 INFO L85 PathProgramCache]: Analyzing trace with hash 335946597, now seen corresponding path program 1 times [2022-11-03 02:40:23,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:40:23,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811223605] [2022-11-03 02:40:23,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:40:23,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:40:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:40:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1372 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2022-11-03 02:40:24,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:40:24,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811223605] [2022-11-03 02:40:24,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811223605] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:40:24,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912289960] [2022-11-03 02:40:24,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:40:24,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:40:24,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:40:24,669 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:40:24,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:40:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:40:26,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 4554 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:40:26,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:40:26,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1372 backedges. 217 proven. 1 refuted. 0 times theorem prover too weak. 1154 trivial. 0 not checked. [2022-11-03 02:40:26,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:40:27,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1372 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2022-11-03 02:40:27,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912289960] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:40:27,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [403320929] [2022-11-03 02:40:27,239 INFO L159 IcfgInterpreter]: Started Sifa with 247 locations of interest [2022-11-03 02:40:27,239 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:40:27,243 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:40:27,249 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:40:27,249 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:40:30,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:30,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:30,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:30,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:30,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:30,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:30,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:30,947 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:40:30,948 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:40:30,949 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:40:30,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:40:30,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:40:30,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:40:30,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 29 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 02:40:31,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:40:31,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:31,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:31,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:31,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:31,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:31,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:31,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:31,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:31,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:31,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:31,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:31,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:31,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:31,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:31,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:31,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:31,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:31,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:31,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:31,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:31,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:40:31,934 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 49 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 02:44:42,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:44:42,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:44:42,634 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 02:44:42,638 INFO L158 Benchmark]: Toolchain (without parser) took 505679.60ms. Allocated memory was 100.7MB in the beginning and 3.0GB in the end (delta: 2.9GB). Free memory was 73.6MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2022-11-03 02:44:42,638 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 100.7MB. Free memory was 56.8MB in the beginning and 56.7MB in the end (delta: 39.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:44:42,638 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3772.34ms. Allocated memory was 100.7MB in the beginning and 251.7MB in the end (delta: 151.0MB). Free memory was 73.6MB in the beginning and 166.5MB in the end (delta: -92.9MB). Peak memory consumption was 121.7MB. Max. memory is 16.1GB. [2022-11-03 02:44:42,638 INFO L158 Benchmark]: Boogie Procedure Inliner took 327.21ms. Allocated memory is still 251.7MB. Free memory was 166.5MB in the beginning and 133.0MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-11-03 02:44:42,639 INFO L158 Benchmark]: Boogie Preprocessor took 377.29ms. Allocated memory is still 251.7MB. Free memory was 133.0MB in the beginning and 149.6MB in the end (delta: -16.6MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. [2022-11-03 02:44:42,639 INFO L158 Benchmark]: RCFGBuilder took 7081.38ms. Allocated memory was 251.7MB in the beginning and 566.2MB in the end (delta: 314.6MB). Free memory was 149.6MB in the beginning and 163.2MB in the end (delta: -13.6MB). Peak memory consumption was 302.0MB. Max. memory is 16.1GB. [2022-11-03 02:44:42,639 INFO L158 Benchmark]: TraceAbstraction took 494060.18ms. Allocated memory was 566.2MB in the beginning and 3.0GB in the end (delta: 2.4GB). Free memory was 431.6MB in the beginning and 2.2GB in the end (delta: -1.7GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2022-11-03 02:44:42,641 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 100.7MB. Free memory was 56.8MB in the beginning and 56.7MB in the end (delta: 39.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3772.34ms. Allocated memory was 100.7MB in the beginning and 251.7MB in the end (delta: 151.0MB). Free memory was 73.6MB in the beginning and 166.5MB in the end (delta: -92.9MB). Peak memory consumption was 121.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 327.21ms. Allocated memory is still 251.7MB. Free memory was 166.5MB in the beginning and 133.0MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 377.29ms. Allocated memory is still 251.7MB. Free memory was 133.0MB in the beginning and 149.6MB in the end (delta: -16.6MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. * RCFGBuilder took 7081.38ms. Allocated memory was 251.7MB in the beginning and 566.2MB in the end (delta: 314.6MB). Free memory was 149.6MB in the beginning and 163.2MB in the end (delta: -13.6MB). Peak memory consumption was 302.0MB. Max. memory is 16.1GB. * TraceAbstraction took 494060.18ms. Allocated memory was 566.2MB in the beginning and 3.0GB in the end (delta: 2.4GB). Free memory was 431.6MB in the beginning and 2.2GB in the end (delta: -1.7GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 02:44:42,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/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 23f9845edcf139ee9434428d040789a6781b16714bf615b854712f008daec6fd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:44:45,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:44:45,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:44:45,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:44:45,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:44:45,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:44:45,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:44:45,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:44:45,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:44:45,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:44:45,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:44:45,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:44:45,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:44:45,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:44:45,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:44:45,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:44:45,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:44:45,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:44:45,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:44:45,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:44:45,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:44:45,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:44:45,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:44:45,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:44:45,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:44:45,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:44:45,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:44:45,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:44:45,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:44:45,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:44:45,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:44:45,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:44:45,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:44:45,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:44:45,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:44:45,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:44:45,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:44:45,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:44:45,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:44:45,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:44:45,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:44:45,304 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 02:44:45,329 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:44:45,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:44:45,329 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:44:45,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:44:45,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:44:45,330 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:44:45,331 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:44:45,331 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:44:45,331 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:44:45,331 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:44:45,331 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:44:45,332 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:44:45,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:44:45,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:44:45,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:44:45,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:44:45,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:44:45,334 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:44:45,334 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:44:45,334 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:44:45,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:44:45,334 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:44:45,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:44:45,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:44:45,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:44:45,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:44:45,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:44:45,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:44:45,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:44:45,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:44:45,342 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:44:45,343 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:44:45,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:44:45,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:44:45,343 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:44:45,343 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23f9845edcf139ee9434428d040789a6781b16714bf615b854712f008daec6fd [2022-11-03 02:44:45,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:44:45,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:44:45,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:44:45,756 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:44:45,757 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:44:45,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2022-11-03 02:44:45,832 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/data/ce7505b97/f033ff48218d472298826c690245d0ef/FLAG8a626854f [2022-11-03 02:44:46,829 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:44:46,829 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2022-11-03 02:44:46,879 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/data/ce7505b97/f033ff48218d472298826c690245d0ef/FLAG8a626854f [2022-11-03 02:44:47,226 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/data/ce7505b97/f033ff48218d472298826c690245d0ef [2022-11-03 02:44:47,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:44:47,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:44:47,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:44:47,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:44:47,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:44:47,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:44:47" (1/1) ... [2022-11-03 02:44:47,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cac6cf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:47, skipping insertion in model container [2022-11-03 02:44:47,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:44:47" (1/1) ... [2022-11-03 02:44:47,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:44:47,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:44:50,371 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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338234,338247] [2022-11-03 02:44:50,374 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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338403,338416] [2022-11-03 02:44:50,377 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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338570,338583] [2022-11-03 02:44:50,378 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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338738,338751] [2022-11-03 02:44:50,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:44:50,458 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-03 02:44:50,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:44:51,031 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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338234,338247] [2022-11-03 02:44:51,032 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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338403,338416] [2022-11-03 02:44:51,032 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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338570,338583] [2022-11-03 02:44:51,033 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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338738,338751] [2022-11-03 02:44:51,040 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:44:51,063 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:44:51,593 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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338234,338247] [2022-11-03 02:44:51,594 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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338403,338416] [2022-11-03 02:44:51,594 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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338570,338583] [2022-11-03 02:44:51,595 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_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i[338738,338751] [2022-11-03 02:44:51,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:44:51,867 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:44:51,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:51 WrapperNode [2022-11-03 02:44:51,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:44:51,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:44:51,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:44:51,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:44:51,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:51" (1/1) ... [2022-11-03 02:44:52,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:51" (1/1) ... [2022-11-03 02:44:52,235 INFO L138 Inliner]: procedures = 440, calls = 2260, calls flagged for inlining = 195, calls inlined = 179, statements flattened = 4697 [2022-11-03 02:44:52,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:44:52,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:44:52,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:44:52,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:44:52,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:51" (1/1) ... [2022-11-03 02:44:52,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:51" (1/1) ... [2022-11-03 02:44:52,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:51" (1/1) ... [2022-11-03 02:44:52,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:51" (1/1) ... [2022-11-03 02:44:52,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:51" (1/1) ... [2022-11-03 02:44:52,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:51" (1/1) ... [2022-11-03 02:44:52,507 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:51" (1/1) ... [2022-11-03 02:44:52,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:51" (1/1) ... [2022-11-03 02:44:52,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:44:52,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:44:52,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:44:52,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:44:52,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:51" (1/1) ... [2022-11-03 02:44:52,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:44:52,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:44:52,584 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:44:52,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:44:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_resume [2022-11-03 02:44:52,627 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_resume [2022-11-03 02:44:52,628 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 02:44:52,628 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 02:44:52,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:44:52,628 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:44:52,628 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 02:44:52,629 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 02:44:52,629 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_write_reg [2022-11-03 02:44:52,629 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_write_reg [2022-11-03 02:44:52,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:44:52,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:44:52,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_3 [2022-11-03 02:44:52,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_3 [2022-11-03 02:44:52,630 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_read8 [2022-11-03 02:44:52,630 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_read8 [2022-11-03 02:44:52,630 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:44:52,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:44:52,630 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 02:44:52,631 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 02:44:52,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_63 [2022-11-03 02:44:52,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_63 [2022-11-03 02:44:52,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_tlan_priv [2022-11-03 02:44:52,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_tlan_priv [2022-11-03 02:44:52,632 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_read_and_clear_stats [2022-11-03 02:44:52,632 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_read_and_clear_stats [2022-11-03 02:44:52,632 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_sync [2022-11-03 02:44:52,633 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_sync [2022-11-03 02:44:52,633 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 02:44:52,633 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 02:44:52,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:44:52,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:44:52,634 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 02:44:52,634 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 02:44:52,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:44:52,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:44:52,634 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 02:44:52,635 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 02:44:52,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:44:52,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-03 02:44:52,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 02:44:52,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-03 02:44:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-03 02:44:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:44:52,638 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:44:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_reset_lists [2022-11-03 02:44:52,638 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_reset_lists [2022-11-03 02:44:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_close [2022-11-03 02:44:52,639 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_close [2022-11-03 02:44:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_65 [2022-11-03 02:44:52,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_65 [2022-11-03 02:44:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:44:52,640 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:44:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_print [2022-11-03 02:44:52,640 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_print [2022-11-03 02:44:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-03 02:44:52,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-03 02:44:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_tlan_priv [2022-11-03 02:44:52,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_tlan_priv [2022-11-03 02:44:52,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pci_unregister_driver [2022-11-03 02:44:52,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pci_unregister_driver [2022-11-03 02:44:52,642 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_probe1 [2022-11-03 02:44:52,642 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_probe1 [2022-11-03 02:44:52,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:44:52,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:44:52,643 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 02:44:52,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 02:44:52,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 02:44:52,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 02:44:52,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 02:44:52,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 02:44:52,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 02:44:52,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 02:44:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_set_timer [2022-11-03 02:44:52,645 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_set_timer [2022-11-03 02:44:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_timer [2022-11-03 02:44:52,645 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_timer [2022-11-03 02:44:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_3_2 [2022-11-03 02:44:52,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_3_2 [2022-11-03 02:44:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_stop [2022-11-03 02:44:52,647 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_stop [2022-11-03 02:44:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 02:44:52,648 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 02:44:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 02:44:52,648 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 02:44:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_remove_one [2022-11-03 02:44:52,649 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_remove_one [2022-11-03 02:44:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_get_skb [2022-11-03 02:44:52,649 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_get_skb [2022-11-03 02:44:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_ee_send_byte [2022-11-03 02:44:52,649 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_ee_send_byte [2022-11-03 02:44:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:44:52,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:44:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:44:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2022-11-03 02:44:52,650 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2022-11-03 02:44:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_poll [2022-11-03 02:44:52,651 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_poll [2022-11-03 02:44:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-03 02:44:52,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-03 02:44:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:44:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:44:52,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:44:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:44:52,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:44:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:44:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:44:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:44:52,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:44:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_free_lists [2022-11-03 02:44:52,665 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_free_lists [2022-11-03 02:44:52,666 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-03 02:44:52,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-03 02:44:52,666 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:44:52,666 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:44:52,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 02:44:52,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 02:44:52,667 INFO L130 BoogieDeclarations]: Found specification of procedure outb_p [2022-11-03 02:44:52,667 INFO L138 BoogieDeclarations]: Found implementation of procedure outb_p [2022-11-03 02:44:52,667 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_store_skb [2022-11-03 02:44:52,667 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_store_skb [2022-11-03 02:44:52,667 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_tx_timeout [2022-11-03 02:44:52,667 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_tx_timeout [2022-11-03 02:44:52,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:44:52,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:44:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-03 02:44:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-03 02:44:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unregister_driver [2022-11-03 02:44:52,668 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unregister_driver [2022-11-03 02:44:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-03 02:44:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_power_up [2022-11-03 02:44:52,669 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_power_up [2022-11-03 02:44:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-03 02:44:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:44:52,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:44:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:44:52,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:44:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 02:44:52,670 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 02:44:52,670 INFO L130 BoogieDeclarations]: Found specification of procedure slow_down_io [2022-11-03 02:44:52,670 INFO L138 BoogieDeclarations]: Found implementation of procedure slow_down_io [2022-11-03 02:44:52,670 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_handle_interrupt [2022-11-03 02:44:52,670 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_handle_interrupt [2022-11-03 02:44:52,670 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_start [2022-11-03 02:44:52,670 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_start [2022-11-03 02:44:52,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 02:44:52,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 02:44:52,671 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_finish_auto_neg [2022-11-03 02:44:52,671 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_finish_auto_neg [2022-11-03 02:44:52,671 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 02:44:52,671 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 02:44:52,671 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:44:52,671 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:44:52,671 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2022-11-03 02:44:52,672 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2022-11-03 02:44:52,672 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_start_link [2022-11-03 02:44:52,672 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_start_link [2022-11-03 02:44:52,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:44:52,673 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_set_multicast_list [2022-11-03 02:44:52,673 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_set_multicast_list [2022-11-03 02:44:52,673 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 02:44:52,673 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 02:44:52,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:44:52,673 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-03 02:44:52,673 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-03 02:44:52,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_8_2 [2022-11-03 02:44:52,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_8_2 [2022-11-03 02:44:52,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-03 02:44:52,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-03 02:44:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-03 02:44:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 02:44:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:44:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_print_list [2022-11-03 02:44:52,675 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_print_list [2022-11-03 02:44:52,675 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_write16 [2022-11-03 02:44:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_write16 [2022-11-03 02:44:52,676 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-03 02:44:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-03 02:44:52,676 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:44:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:44:52,676 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-03 02:44:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-03 02:44:52,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:44:52,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:44:52,677 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-03 02:44:52,677 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-03 02:44:52,677 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_finish_reset [2022-11-03 02:44:52,677 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_finish_reset [2022-11-03 02:44:52,677 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_write32 [2022-11-03 02:44:52,677 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_write32 [2022-11-03 02:44:52,678 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 02:44:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 02:44:52,678 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:44:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:44:52,678 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_set_mac [2022-11-03 02:44:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_set_mac [2022-11-03 02:44:52,678 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-03 02:44:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-03 02:44:52,679 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_ee_send_start [2022-11-03 02:44:52,679 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_ee_send_start [2022-11-03 02:44:52,679 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_read32 [2022-11-03 02:44:52,679 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_read32 [2022-11-03 02:44:52,679 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_write8 [2022-11-03 02:44:52,679 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_write8 [2022-11-03 02:44:52,679 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:44:52,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:44:52,680 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_power_down [2022-11-03 02:44:52,680 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_power_down [2022-11-03 02:44:52,680 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-03 02:44:52,680 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-03 02:44:52,680 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_reset_adapter [2022-11-03 02:44:52,680 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_reset_adapter [2022-11-03 02:44:52,680 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_send_data [2022-11-03 02:44:52,680 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_send_data [2022-11-03 02:44:52,681 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_reset [2022-11-03 02:44:52,681 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_reset [2022-11-03 02:44:52,681 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_read_reg [2022-11-03 02:44:52,681 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_read_reg [2022-11-03 02:44:52,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:44:52,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:44:52,681 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_open [2022-11-03 02:44:52,682 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_open [2022-11-03 02:44:52,682 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-03 02:44:52,682 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-03 02:44:52,682 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-03 02:44:52,682 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-03 02:44:52,682 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2022-11-03 02:44:52,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2022-11-03 02:44:52,687 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-03 02:44:52,687 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-03 02:44:52,687 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-11-03 02:44:52,687 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-03 02:44:52,687 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-03 02:44:52,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:44:52,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:44:52,688 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-03 02:44:52,688 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-03 02:44:52,689 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-11-03 02:44:52,690 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-11-03 02:44:53,618 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:44:53,637 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:45:03,374 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:45:27,714 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6942: assume 0bv64 == ~bvadd64(tlan_eisa_probe_~tmp___1~5#1.base, tlan_eisa_probe_~tmp___1~5#1.offset); [2022-11-03 02:45:27,714 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6942: assume !(0bv64 == ~bvadd64(tlan_eisa_probe_~tmp___1~5#1.base, tlan_eisa_probe_~tmp___1~5#1.offset)); [2022-11-03 02:45:27,714 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7042: assume ~bvsle64(tlan_eisa_probe_~ioaddr~0#1, 36863bv64); [2022-11-03 02:45:27,714 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7042: assume !~bvsle64(tlan_eisa_probe_~ioaddr~0#1, 36863bv64); [2022-11-03 02:45:27,715 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6976-2: SUMMARY for call tlan_eisa_probe_#t~ret340#1 := inb(~bvadd32(3264bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2022-11-03 02:45:27,715 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6976: assume 16bv32 == ~debug~0;havoc tlan_eisa_probe_#t~nondet339#1; [2022-11-03 02:45:27,715 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6976: assume !(16bv32 == ~debug~0); [2022-11-03 02:45:27,715 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7044: assume 0bv32 != ~bvand32(16bv32, ~debug~0); [2022-11-03 02:45:27,715 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7044: assume !(0bv32 != ~bvand32(16bv32, ~debug~0)); [2022-11-03 02:45:27,716 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6947-1: tlan_eisa_probe_~tmp___2~2#1 := tlan_eisa_probe_#t~ret336#1;havoc tlan_eisa_probe_#t~ret336#1; [2022-11-03 02:45:27,716 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6947: SUMMARY for call tlan_eisa_probe_#t~ret336#1 := inw(~bvadd32(3200bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2022-11-03 02:45:27,716 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7014: SUMMARY for call tlan_eisa_probe_#t~ret341#1 := tlan_probe1(0bv64, 0bv64, tlan_eisa_probe_~ioaddr~0#1, tlan_eisa_probe_~irq~0#1, 12bv32, 0bv64, 0bv64); srcloc: null [2022-11-03 02:45:27,716 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6949: assume 4366bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~tmp___2~2#1); [2022-11-03 02:45:27,716 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6949: assume !(4366bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~tmp___2~2#1)); [2022-11-03 02:45:27,716 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6983: tlan_eisa_probe_~tmp___4~0#1 := tlan_eisa_probe_#t~ret340#1;havoc tlan_eisa_probe_#t~ret340#1; [2022-11-03 02:45:27,717 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6951: SUMMARY for call __release_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16bv64); srcloc: null [2022-11-03 02:45:27,717 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6918-1: assume 0bv32 != ~bvand32(16bv32, ~debug~0); [2022-11-03 02:45:27,717 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6918-1: assume !(0bv32 != ~bvand32(16bv32, ~debug~0)); [2022-11-03 02:45:27,717 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6986: assume 16bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1); [2022-11-03 02:45:27,717 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6986: assume !(16bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1)); [2022-11-03 02:45:27,718 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6920-1: tlan_eisa_probe_~tmp~35#1 := tlan_eisa_probe_#t~ret330#1;havoc tlan_eisa_probe_#t~ret330#1;havoc tlan_eisa_probe_#t~nondet331#1; [2022-11-03 02:45:27,718 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6920: SUMMARY for call tlan_eisa_probe_#t~ret330#1 := inw(~bvadd32(3200bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2022-11-03 02:45:27,718 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6987: tlan_eisa_probe_~irq~0#1 := 5bv32; [2022-11-03 02:45:27,718 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7021: tlan_eisa_probe_~rc~2#1 := tlan_eisa_probe_#t~ret341#1;havoc tlan_eisa_probe_#t~ret341#1; [2022-11-03 02:45:27,718 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6990: assume 32bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1); [2022-11-03 02:45:27,719 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6990: assume !(32bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1)); [2022-11-03 02:45:27,719 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6957-1: tlan_eisa_probe_~device_id~1#1 := tlan_eisa_probe_#t~ret337#1;havoc tlan_eisa_probe_#t~ret337#1; [2022-11-03 02:45:27,719 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6957: SUMMARY for call tlan_eisa_probe_#t~ret337#1 := inw(~bvadd32(3202bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2022-11-03 02:45:27,719 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6991: tlan_eisa_probe_~irq~0#1 := 9bv32; [2022-11-03 02:45:27,719 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6925-1: assume 0bv32 != ~bvand32(16bv32, ~debug~0);havoc tlan_eisa_probe_#t~nondet334#1; [2022-11-03 02:45:27,719 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6925-1: assume !(0bv32 != ~bvand32(16bv32, ~debug~0)); [2022-11-03 02:45:27,720 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6959: assume 8433bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~device_id~1#1) && 16625bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~device_id~1#1); [2022-11-03 02:45:27,720 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6959: assume !(8433bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~device_id~1#1) && 16625bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~device_id~1#1)); [2022-11-03 02:45:27,720 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6927-1: tlan_eisa_probe_~tmp___0~12#1 := tlan_eisa_probe_#t~ret332#1;havoc tlan_eisa_probe_#t~ret332#1;havoc tlan_eisa_probe_#t~nondet333#1; [2022-11-03 02:45:27,720 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6927: SUMMARY for call tlan_eisa_probe_#t~ret332#1 := inw(~bvadd32(3202bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2022-11-03 02:45:27,720 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6994: assume 64bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1); [2022-11-03 02:45:27,721 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6994: assume !(64bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1)); [2022-11-03 02:45:27,721 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6961: SUMMARY for call __release_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16bv64); srcloc: null [2022-11-03 02:45:27,721 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6995: tlan_eisa_probe_~irq~0#1 := 10bv32; [2022-11-03 02:45:27,721 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6998: assume 128bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1); [2022-11-03 02:45:27,721 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6998: assume !(128bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1)); [2022-11-03 02:45:27,722 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6932-1: call tlan_eisa_probe_#t~ret335#1.base, tlan_eisa_probe_#t~ret335#1.offset := __request_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16bv64, ~#tlan_signature~0.base, ~#tlan_signature~0.offset, 0bv32);tlan_eisa_probe_~tmp___1~5#1.base, tlan_eisa_probe_~tmp___1~5#1.offset := tlan_eisa_probe_#t~ret335#1.base, tlan_eisa_probe_#t~ret335#1.offset;havoc tlan_eisa_probe_#t~ret335#1.base, tlan_eisa_probe_#t~ret335#1.offset; [2022-11-03 02:45:27,722 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6999: tlan_eisa_probe_~irq~0#1 := 11bv32; [2022-11-03 02:45:27,722 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6967-1: tlan_eisa_probe_~tmp___3~1#1 := tlan_eisa_probe_#t~ret338#1;havoc tlan_eisa_probe_#t~ret338#1; [2022-11-03 02:45:27,722 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6967: SUMMARY for call tlan_eisa_probe_#t~ret338#1 := inb(~bvadd32(3204bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2022-11-03 02:45:27,722 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7033-1: tlan_eisa_probe_~ioaddr~0#1 := ~bvadd64(4096bv64, tlan_eisa_probe_~ioaddr~0#1); [2022-11-03 02:45:27,722 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7002: assume 16bv32 == ~debug~0;havoc tlan_eisa_probe_#t~nondet342#1; [2022-11-03 02:45:27,723 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L7002: assume !(16bv32 == ~debug~0); [2022-11-03 02:45:27,723 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6969: assume 1bv32 != ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___3~1#1); [2022-11-03 02:45:27,723 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6969: assume !(1bv32 != ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___3~1#1)); [2022-11-03 02:45:27,723 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6971-1: assume 16bv32 == ~debug~0;havoc tlan_eisa_probe_#t~nondet343#1; [2022-11-03 02:45:27,723 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6971-1: assume !(16bv32 == ~debug~0); [2022-11-03 02:45:27,724 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L6971: SUMMARY for call __release_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16bv64); srcloc: null [2022-11-03 02:45:27,859 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:45:27,876 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:45:27,876 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:45:27,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:45:27 BoogieIcfgContainer [2022-11-03 02:45:27,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:45:27,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:45:27,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:45:27,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:45:27,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:44:47" (1/3) ... [2022-11-03 02:45:27,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb376d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:45:27, skipping insertion in model container [2022-11-03 02:45:27,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:51" (2/3) ... [2022-11-03 02:45:27,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb376d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:45:27, skipping insertion in model container [2022-11-03 02:45:27,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:45:27" (3/3) ... [2022-11-03 02:45:27,889 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2022-11-03 02:45:27,908 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:45:27,908 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 02:45:27,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:45:28,000 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;@4001365e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:45:28,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 02:45:28,010 INFO L276 IsEmpty]: Start isEmpty. Operand has 1990 states, 1278 states have (on average 1.2519561815336464) internal successors, (1600), 1334 states have internal predecessors, (1600), 601 states have call successors, (601), 108 states have call predecessors, (601), 107 states have return successors, (597), 579 states have call predecessors, (597), 597 states have call successors, (597) [2022-11-03 02:45:28,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-03 02:45:28,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:45:28,021 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-03 02:45:28,021 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 02:45:28,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:45:28,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1354900798, now seen corresponding path program 1 times [2022-11-03 02:45:28,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:45:28,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861939730] [2022-11-03 02:45:28,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:28,042 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:45:28,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:45:28,049 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:45:28,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:45:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:29,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:45:29,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:45:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:45:29,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:45:29,983 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:45:29,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861939730] [2022-11-03 02:45:29,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861939730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:45:29,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:45:29,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:45:29,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528646761] [2022-11-03 02:45:29,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:45:29,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:45:29,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:45:30,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:45:30,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:45:30,063 INFO L87 Difference]: Start difference. First operand has 1990 states, 1278 states have (on average 1.2519561815336464) internal successors, (1600), 1334 states have internal predecessors, (1600), 601 states have call successors, (601), 108 states have call predecessors, (601), 107 states have return successors, (597), 579 states have call predecessors, (597), 597 states have call successors, (597) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 02:45:32,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:45:33,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:45:33,049 INFO L93 Difference]: Finished difference Result 5693 states and 8294 transitions. [2022-11-03 02:45:33,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:45:33,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2022-11-03 02:45:33,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:45:33,096 INFO L225 Difference]: With dead ends: 5693 [2022-11-03 02:45:33,096 INFO L226 Difference]: Without dead ends: 3696 [2022-11-03 02:45:33,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:45:33,127 INFO L413 NwaCegarLoop]: 3905 mSDtfsCounter, 2403 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2403 SdHoareTripleChecker+Valid, 6597 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:45:33,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2403 Valid, 6597 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 88 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-03 02:45:33,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3696 states. [2022-11-03 02:45:33,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3696 to 3654. [2022-11-03 02:45:33,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 2365 states have (on average 1.2312896405919662) internal successors, (2912), 2466 states have internal predecessors, (2912), 1080 states have call successors, (1080), 207 states have call predecessors, (1080), 206 states have return successors, (1086), 1042 states have call predecessors, (1086), 1077 states have call successors, (1086) [2022-11-03 02:45:33,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 5078 transitions. [2022-11-03 02:45:33,467 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 5078 transitions. Word has length 52 [2022-11-03 02:45:33,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:45:33,469 INFO L495 AbstractCegarLoop]: Abstraction has 3654 states and 5078 transitions. [2022-11-03 02:45:33,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 02:45:33,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 5078 transitions. [2022-11-03 02:45:33,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-03 02:45:33,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:45:33,482 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-03 02:45:33,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:45:33,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:45:33,698 INFO L420 AbstractCegarLoop]: === Iteration 2 === 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 02:45:33,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:45:33,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1370419516, now seen corresponding path program 1 times [2022-11-03 02:45:33,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:45:33,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780946926] [2022-11-03 02:45:33,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:33,701 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:45:33,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:45:33,711 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:45:33,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:45:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:35,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:45:35,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:45:35,862 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:45:35,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:45:35,862 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:45:35,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780946926] [2022-11-03 02:45:35,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780946926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:45:35,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:45:35,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:45:35,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510735871] [2022-11-03 02:45:35,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:45:35,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:45:35,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:45:35,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:45:35,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:45:35,931 INFO L87 Difference]: Start difference. First operand 3654 states and 5078 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 02:45:36,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:45:36,365 INFO L93 Difference]: Finished difference Result 3660 states and 5083 transitions. [2022-11-03 02:45:36,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:45:36,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2022-11-03 02:45:36,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:45:36,390 INFO L225 Difference]: With dead ends: 3660 [2022-11-03 02:45:36,390 INFO L226 Difference]: Without dead ends: 3658 [2022-11-03 02:45:36,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:45:36,395 INFO L413 NwaCegarLoop]: 2765 mSDtfsCounter, 2735 mSDsluCounter, 5518 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2736 SdHoareTripleChecker+Valid, 8283 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:45:36,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2736 Valid, 8283 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:45:36,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3658 states. [2022-11-03 02:45:36,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3658 to 3658. [2022-11-03 02:45:36,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 2368 states have (on average 1.2309966216216217) internal successors, (2915), 2469 states have internal predecessors, (2915), 1080 states have call successors, (1080), 208 states have call predecessors, (1080), 207 states have return successors, (1086), 1042 states have call predecessors, (1086), 1077 states have call successors, (1086) [2022-11-03 02:45:36,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 5081 transitions. [2022-11-03 02:45:36,703 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 5081 transitions. Word has length 52 [2022-11-03 02:45:36,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:45:36,704 INFO L495 AbstractCegarLoop]: Abstraction has 3658 states and 5081 transitions. [2022-11-03 02:45:36,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 02:45:36,705 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 5081 transitions. [2022-11-03 02:45:36,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-03 02:45:36,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:45:36,709 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-03 02:45:36,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:45:36,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:45:36,925 INFO L420 AbstractCegarLoop]: === Iteration 3 === 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 02:45:36,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:45:36,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1181643244, now seen corresponding path program 1 times [2022-11-03 02:45:36,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:45:36,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033525487] [2022-11-03 02:45:36,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:36,928 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:45:36,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:45:36,930 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:45:36,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:45:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:38,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 1426 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:45:38,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:45:39,214 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:45:39,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:45:39,527 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:45:39,527 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:45:39,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033525487] [2022-11-03 02:45:39,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033525487] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:45:39,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:45:39,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-03 02:45:39,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464928313] [2022-11-03 02:45:39,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:45:39,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:45:39,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:45:39,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:45:39,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:45:39,528 INFO L87 Difference]: Start difference. First operand 3658 states and 5081 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:45:39,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:45:39,983 INFO L93 Difference]: Finished difference Result 3664 states and 5086 transitions. [2022-11-03 02:45:39,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:45:39,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2022-11-03 02:45:39,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:45:40,011 INFO L225 Difference]: With dead ends: 3664 [2022-11-03 02:45:40,012 INFO L226 Difference]: Without dead ends: 3662 [2022-11-03 02:45:40,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:45:40,020 INFO L413 NwaCegarLoop]: 2768 mSDtfsCounter, 2736 mSDsluCounter, 5517 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2746 SdHoareTripleChecker+Valid, 8285 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:45:40,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2746 Valid, 8285 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:45:40,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3662 states. [2022-11-03 02:45:40,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3662 to 3662. [2022-11-03 02:45:40,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 2371 states have (on average 1.230704344158583) internal successors, (2918), 2472 states have internal predecessors, (2918), 1080 states have call successors, (1080), 209 states have call predecessors, (1080), 208 states have return successors, (1086), 1042 states have call predecessors, (1086), 1077 states have call successors, (1086) [2022-11-03 02:45:40,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 5084 transitions. [2022-11-03 02:45:40,441 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 5084 transitions. Word has length 57 [2022-11-03 02:45:40,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:45:40,443 INFO L495 AbstractCegarLoop]: Abstraction has 3662 states and 5084 transitions. [2022-11-03 02:45:40,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:45:40,444 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 5084 transitions. [2022-11-03 02:45:40,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 02:45:40,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:45:40,446 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-03 02:45:40,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:45:40,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:45:40,669 INFO L420 AbstractCegarLoop]: === Iteration 4 === 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 02:45:40,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:45:40,669 INFO L85 PathProgramCache]: Analyzing trace with hash -160876412, now seen corresponding path program 1 times [2022-11-03 02:45:40,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:45:40,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062294370] [2022-11-03 02:45:40,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:40,671 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:45:40,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:45:40,672 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:45:40,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 02:45:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:42,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:45:42,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:45:42,643 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:45:42,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:45:42,919 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:45:42,919 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:45:42,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062294370] [2022-11-03 02:45:42,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062294370] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:45:42,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:45:42,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-03 02:45:42,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191909676] [2022-11-03 02:45:42,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:45:42,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:45:42,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:45:42,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:45:42,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:45:42,921 INFO L87 Difference]: Start difference. First operand 3662 states and 5084 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:45:43,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:45:43,445 INFO L93 Difference]: Finished difference Result 3668 states and 5089 transitions. [2022-11-03 02:45:43,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:45:43,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2022-11-03 02:45:43,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:45:43,468 INFO L225 Difference]: With dead ends: 3668 [2022-11-03 02:45:43,468 INFO L226 Difference]: Without dead ends: 3666 [2022-11-03 02:45:43,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:45:43,474 INFO L413 NwaCegarLoop]: 2768 mSDtfsCounter, 2736 mSDsluCounter, 5517 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2745 SdHoareTripleChecker+Valid, 8285 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:45:43,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2745 Valid, 8285 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:45:43,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2022-11-03 02:45:43,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 3666. [2022-11-03 02:45:43,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 2374 states have (on average 1.2304128053917438) internal successors, (2921), 2475 states have internal predecessors, (2921), 1080 states have call successors, (1080), 210 states have call predecessors, (1080), 209 states have return successors, (1086), 1042 states have call predecessors, (1086), 1077 states have call successors, (1086) [2022-11-03 02:45:43,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 5087 transitions. [2022-11-03 02:45:43,870 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 5087 transitions. Word has length 62 [2022-11-03 02:45:43,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:45:43,870 INFO L495 AbstractCegarLoop]: Abstraction has 3666 states and 5087 transitions. [2022-11-03 02:45:43,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:45:43,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 5087 transitions. [2022-11-03 02:45:43,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 02:45:43,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:45:43,874 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2022-11-03 02:45:43,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:45:44,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:45:44,091 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 02:45:44,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:45:44,092 INFO L85 PathProgramCache]: Analyzing trace with hash -16274476, now seen corresponding path program 1 times [2022-11-03 02:45:44,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:45:44,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041961296] [2022-11-03 02:45:44,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:44,093 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:45:44,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:45:44,094 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:45:44,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:45:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:45,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:45:45,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:45:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-03 02:45:45,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:45:46,215 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-03 02:45:46,216 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:45:46,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041961296] [2022-11-03 02:45:46,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041961296] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:45:46,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:45:46,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-03 02:45:46,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821877859] [2022-11-03 02:45:46,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:45:46,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:45:46,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:45:46,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:45:46,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:45:46,218 INFO L87 Difference]: Start difference. First operand 3666 states and 5087 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 02:45:46,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:45:46,821 INFO L93 Difference]: Finished difference Result 3672 states and 5092 transitions. [2022-11-03 02:45:46,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:45:46,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 67 [2022-11-03 02:45:46,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:45:46,844 INFO L225 Difference]: With dead ends: 3672 [2022-11-03 02:45:46,844 INFO L226 Difference]: Without dead ends: 3670 [2022-11-03 02:45:46,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:45:46,848 INFO L413 NwaCegarLoop]: 2768 mSDtfsCounter, 2736 mSDsluCounter, 5517 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2744 SdHoareTripleChecker+Valid, 8285 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:45:46,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2744 Valid, 8285 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:45:46,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2022-11-03 02:45:47,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 3670. [2022-11-03 02:45:47,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3670 states, 2377 states have (on average 1.2301220025241901) internal successors, (2924), 2478 states have internal predecessors, (2924), 1080 states have call successors, (1080), 211 states have call predecessors, (1080), 210 states have return successors, (1086), 1042 states have call predecessors, (1086), 1077 states have call successors, (1086) [2022-11-03 02:45:47,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 5090 transitions. [2022-11-03 02:45:47,262 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 5090 transitions. Word has length 67 [2022-11-03 02:45:47,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:45:47,263 INFO L495 AbstractCegarLoop]: Abstraction has 3670 states and 5090 transitions. [2022-11-03 02:45:47,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 02:45:47,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 5090 transitions. [2022-11-03 02:45:47,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 02:45:47,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:45:47,264 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 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] [2022-11-03 02:45:47,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:45:47,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:45:47,489 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 02:45:47,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:45:47,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1205869921, now seen corresponding path program 1 times [2022-11-03 02:45:47,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:45:47,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617542667] [2022-11-03 02:45:47,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:47,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:45:47,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:45:47,492 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:45:47,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 02:45:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:48,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 1486 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:45:48,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:45:49,784 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-03 02:45:49,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:45:50,659 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 02:45:50,659 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:45:50,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617542667] [2022-11-03 02:45:50,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617542667] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:45:50,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1666823772] [2022-11-03 02:45:50,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:50,659 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:45:50,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:45:50,664 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:45:50,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-11-03 02:45:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:52,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 1486 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:45:52,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:45:52,792 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-03 02:45:52,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:45:53,307 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-03 02:45:53,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1666823772] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:45:53,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:45:53,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16, 16, 4] total 24 [2022-11-03 02:45:53,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601155782] [2022-11-03 02:45:53,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:45:53,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:45:53,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:45:53,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:45:53,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:45:53,310 INFO L87 Difference]: Start difference. First operand 3670 states and 5090 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:45:54,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:45:54,110 INFO L93 Difference]: Finished difference Result 3676 states and 5095 transitions. [2022-11-03 02:45:54,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:45:54,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 86 [2022-11-03 02:45:54,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:45:54,136 INFO L225 Difference]: With dead ends: 3676 [2022-11-03 02:45:54,136 INFO L226 Difference]: Without dead ends: 3674 [2022-11-03 02:45:54,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2022-11-03 02:45:54,141 INFO L413 NwaCegarLoop]: 2768 mSDtfsCounter, 2729 mSDsluCounter, 5517 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2736 SdHoareTripleChecker+Valid, 8285 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:45:54,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2736 Valid, 8285 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:45:54,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2022-11-03 02:45:54,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 3674. [2022-11-03 02:45:54,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3674 states, 2380 states have (on average 1.2298319327731093) internal successors, (2927), 2481 states have internal predecessors, (2927), 1080 states have call successors, (1080), 212 states have call predecessors, (1080), 211 states have return successors, (1086), 1042 states have call predecessors, (1086), 1077 states have call successors, (1086) [2022-11-03 02:45:54,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 5093 transitions. [2022-11-03 02:45:54,559 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 5093 transitions. Word has length 86 [2022-11-03 02:45:54,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:45:54,559 INFO L495 AbstractCegarLoop]: Abstraction has 3674 states and 5093 transitions. [2022-11-03 02:45:54,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:45:54,560 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 5093 transitions. [2022-11-03 02:45:54,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-03 02:45:54,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:45:54,561 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:45:54,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2022-11-03 02:45:54,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:45:54,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:45:54,976 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 02:45:54,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:45:54,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1315407721, now seen corresponding path program 1 times [2022-11-03 02:45:54,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:45:54,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930065771] [2022-11-03 02:45:54,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:54,978 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:45:54,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:45:54,979 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:45:54,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:45:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:56,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:45:56,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:45:57,347 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-03 02:45:57,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:45:58,308 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-03 02:45:58,309 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:45:58,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930065771] [2022-11-03 02:45:58,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930065771] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:45:58,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [500727663] [2022-11-03 02:45:58,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:58,309 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:45:58,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:45:58,311 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:45:58,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-03 02:45:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:59,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:45:59,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:00,649 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:46:00,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:46:01,211 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:46:01,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [500727663] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:46:01,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:46:01,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16, 16, 4] total 24 [2022-11-03 02:46:01,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680602122] [2022-11-03 02:46:01,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:01,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:46:01,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:01,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:46:01,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:46:01,213 INFO L87 Difference]: Start difference. First operand 3674 states and 5093 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:46:02,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:02,097 INFO L93 Difference]: Finished difference Result 3680 states and 5098 transitions. [2022-11-03 02:46:02,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:46:02,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 91 [2022-11-03 02:46:02,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:02,132 INFO L225 Difference]: With dead ends: 3680 [2022-11-03 02:46:02,135 INFO L226 Difference]: Without dead ends: 3678 [2022-11-03 02:46:02,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2022-11-03 02:46:02,139 INFO L413 NwaCegarLoop]: 2768 mSDtfsCounter, 2729 mSDsluCounter, 5517 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 8285 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:02,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2735 Valid, 8285 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:46:02,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3678 states. [2022-11-03 02:46:02,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3678 to 3678. [2022-11-03 02:46:02,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3678 states, 2383 states have (on average 1.229542593369702) internal successors, (2930), 2484 states have internal predecessors, (2930), 1080 states have call successors, (1080), 213 states have call predecessors, (1080), 212 states have return successors, (1086), 1042 states have call predecessors, (1086), 1077 states have call successors, (1086) [2022-11-03 02:46:02,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3678 states to 3678 states and 5096 transitions. [2022-11-03 02:46:02,585 INFO L78 Accepts]: Start accepts. Automaton has 3678 states and 5096 transitions. Word has length 91 [2022-11-03 02:46:02,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:02,585 INFO L495 AbstractCegarLoop]: Abstraction has 3678 states and 5096 transitions. [2022-11-03 02:46:02,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:46:02,586 INFO L276 IsEmpty]: Start isEmpty. Operand 3678 states and 5096 transitions. [2022-11-03 02:46:02,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-03 02:46:02,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:02,587 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 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] [2022-11-03 02:46:02,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:02,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:03,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:03,005 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 02:46:03,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:03,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1076086497, now seen corresponding path program 1 times [2022-11-03 02:46:03,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:03,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712289588] [2022-11-03 02:46:03,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:03,007 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:03,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:03,008 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:03,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 02:46:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:04,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:46:04,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:05,498 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-03 02:46:05,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:46:06,384 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-03 02:46:06,384 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:06,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712289588] [2022-11-03 02:46:06,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712289588] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:46:06,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1236802912] [2022-11-03 02:46:06,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:06,385 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:46:06,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:46:06,386 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:46:06,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-11-03 02:46:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:07,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:46:07,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-03 02:46:08,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:46:09,357 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-03 02:46:09,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1236802912] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:46:09,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:46:09,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16, 16, 4] total 24 [2022-11-03 02:46:09,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880151595] [2022-11-03 02:46:09,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:09,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:46:09,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:09,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:46:09,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:46:09,361 INFO L87 Difference]: Start difference. First operand 3678 states and 5096 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:46:10,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:10,569 INFO L93 Difference]: Finished difference Result 6783 states and 9722 transitions. [2022-11-03 02:46:10,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:46:10,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 96 [2022-11-03 02:46:10,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:10,631 INFO L225 Difference]: With dead ends: 6783 [2022-11-03 02:46:10,631 INFO L226 Difference]: Without dead ends: 6781 [2022-11-03 02:46:10,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2022-11-03 02:46:10,637 INFO L413 NwaCegarLoop]: 3679 mSDtfsCounter, 2353 mSDsluCounter, 10121 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2358 SdHoareTripleChecker+Valid, 13800 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:10,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2358 Valid, 13800 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:46:10,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6781 states. [2022-11-03 02:46:11,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6781 to 6767. [2022-11-03 02:46:11,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6767 states, 4374 states have (on average 1.2265660722450846) internal successors, (5365), 4571 states have internal predecessors, (5365), 1980 states have call successors, (1980), 422 states have call predecessors, (1980), 410 states have return successors, (2364), 1878 states have call predecessors, (2364), 1974 states have call successors, (2364) [2022-11-03 02:46:11,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6767 states to 6767 states and 9709 transitions. [2022-11-03 02:46:11,640 INFO L78 Accepts]: Start accepts. Automaton has 6767 states and 9709 transitions. Word has length 96 [2022-11-03 02:46:11,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:11,641 INFO L495 AbstractCegarLoop]: Abstraction has 6767 states and 9709 transitions. [2022-11-03 02:46:11,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:46:11,641 INFO L276 IsEmpty]: Start isEmpty. Operand 6767 states and 9709 transitions. [2022-11-03 02:46:11,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 02:46:11,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:11,645 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 3, 3, 3, 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] [2022-11-03 02:46:11,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:11,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:12,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:46:12,069 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:46:12,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:12,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1162188972, now seen corresponding path program 1 times [2022-11-03 02:46:12,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:12,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070921928] [2022-11-03 02:46:12,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:12,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:12,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:12,072 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:12,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 02:46:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:13,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:46:13,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:14,292 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-03 02:46:14,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:46:14,584 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-03 02:46:14,584 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:14,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070921928] [2022-11-03 02:46:14,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070921928] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:46:14,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:46:14,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-03 02:46:14,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43984799] [2022-11-03 02:46:14,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:14,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:46:14,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:14,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:46:14,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:46:14,587 INFO L87 Difference]: Start difference. First operand 6767 states and 9709 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:46:15,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:15,375 INFO L93 Difference]: Finished difference Result 6777 states and 9718 transitions. [2022-11-03 02:46:15,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:46:15,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 87 [2022-11-03 02:46:15,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:15,414 INFO L225 Difference]: With dead ends: 6777 [2022-11-03 02:46:15,415 INFO L226 Difference]: Without dead ends: 6775 [2022-11-03 02:46:15,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:46:15,419 INFO L413 NwaCegarLoop]: 2768 mSDtfsCounter, 2736 mSDsluCounter, 5517 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2740 SdHoareTripleChecker+Valid, 8285 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:15,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2740 Valid, 8285 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:46:15,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6775 states. [2022-11-03 02:46:16,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6775 to 6775. [2022-11-03 02:46:16,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6775 states, 4380 states have (on average 1.226255707762557) internal successors, (5371), 4577 states have internal predecessors, (5371), 1980 states have call successors, (1980), 424 states have call predecessors, (1980), 412 states have return successors, (2364), 1878 states have call predecessors, (2364), 1974 states have call successors, (2364) [2022-11-03 02:46:16,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6775 states to 6775 states and 9715 transitions. [2022-11-03 02:46:16,304 INFO L78 Accepts]: Start accepts. Automaton has 6775 states and 9715 transitions. Word has length 87 [2022-11-03 02:46:16,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:16,305 INFO L495 AbstractCegarLoop]: Abstraction has 6775 states and 9715 transitions. [2022-11-03 02:46:16,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:46:16,305 INFO L276 IsEmpty]: Start isEmpty. Operand 6775 states and 9715 transitions. [2022-11-03 02:46:16,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-03 02:46:16,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:16,307 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 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] [2022-11-03 02:46:16,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:16,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:16,521 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 02:46:16,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:16,521 INFO L85 PathProgramCache]: Analyzing trace with hash 667203012, now seen corresponding path program 1 times [2022-11-03 02:46:16,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:16,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555288917] [2022-11-03 02:46:16,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:16,522 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:16,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:16,523 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:16,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 02:46:17,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:18,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:46:18,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:18,737 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-03 02:46:18,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:46:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-03 02:46:19,090 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:19,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555288917] [2022-11-03 02:46:19,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555288917] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:46:19,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:46:19,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-03 02:46:19,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184997481] [2022-11-03 02:46:19,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:19,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:46:19,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:19,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:46:19,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:46:19,092 INFO L87 Difference]: Start difference. First operand 6775 states and 9715 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:46:20,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:20,019 INFO L93 Difference]: Finished difference Result 6785 states and 9724 transitions. [2022-11-03 02:46:20,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:46:20,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 92 [2022-11-03 02:46:20,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:20,054 INFO L225 Difference]: With dead ends: 6785 [2022-11-03 02:46:20,055 INFO L226 Difference]: Without dead ends: 6783 [2022-11-03 02:46:20,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:46:20,060 INFO L413 NwaCegarLoop]: 2768 mSDtfsCounter, 2736 mSDsluCounter, 5517 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2739 SdHoareTripleChecker+Valid, 8285 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:20,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2739 Valid, 8285 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:46:20,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6783 states. [2022-11-03 02:46:21,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6783 to 6783. [2022-11-03 02:46:21,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6783 states, 4386 states have (on average 1.2259461924304607) internal successors, (5377), 4583 states have internal predecessors, (5377), 1980 states have call successors, (1980), 426 states have call predecessors, (1980), 414 states have return successors, (2364), 1878 states have call predecessors, (2364), 1974 states have call successors, (2364) [2022-11-03 02:46:21,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6783 states to 6783 states and 9721 transitions. [2022-11-03 02:46:21,354 INFO L78 Accepts]: Start accepts. Automaton has 6783 states and 9721 transitions. Word has length 92 [2022-11-03 02:46:21,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:21,355 INFO L495 AbstractCegarLoop]: Abstraction has 6783 states and 9721 transitions. [2022-11-03 02:46:21,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:46:21,355 INFO L276 IsEmpty]: Start isEmpty. Operand 6783 states and 9721 transitions. [2022-11-03 02:46:21,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-03 02:46:21,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:21,362 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:21,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:21,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:21,585 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 02:46:21,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:21,585 INFO L85 PathProgramCache]: Analyzing trace with hash -403204969, now seen corresponding path program 1 times [2022-11-03 02:46:21,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:21,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616526119] [2022-11-03 02:46:21,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:21,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:21,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:21,589 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:21,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 02:46:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:23,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:46:23,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:23,972 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-03 02:46:23,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:46:24,835 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-03 02:46:24,835 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:24,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616526119] [2022-11-03 02:46:24,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616526119] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:46:24,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2135004462] [2022-11-03 02:46:24,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:24,836 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:46:24,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:46:24,837 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:46:24,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-11-03 02:46:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:26,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:46:26,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:27,221 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-03 02:46:27,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:46:27,767 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-03 02:46:27,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2135004462] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:46:27,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:46:27,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16, 16, 4] total 24 [2022-11-03 02:46:27,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769239504] [2022-11-03 02:46:27,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:27,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:46:27,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:27,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:46:27,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:46:27,770 INFO L87 Difference]: Start difference. First operand 6783 states and 9721 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:46:28,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:28,795 INFO L93 Difference]: Finished difference Result 6793 states and 9730 transitions. [2022-11-03 02:46:28,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:46:28,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 111 [2022-11-03 02:46:28,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:28,825 INFO L225 Difference]: With dead ends: 6793 [2022-11-03 02:46:28,825 INFO L226 Difference]: Without dead ends: 6791 [2022-11-03 02:46:28,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2022-11-03 02:46:28,830 INFO L413 NwaCegarLoop]: 2768 mSDtfsCounter, 2729 mSDsluCounter, 5517 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2731 SdHoareTripleChecker+Valid, 8285 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:28,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2731 Valid, 8285 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:46:28,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6791 states. [2022-11-03 02:46:29,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6791 to 6791. [2022-11-03 02:46:29,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6791 states, 4392 states have (on average 1.2256375227686702) internal successors, (5383), 4589 states have internal predecessors, (5383), 1980 states have call successors, (1980), 428 states have call predecessors, (1980), 416 states have return successors, (2364), 1878 states have call predecessors, (2364), 1974 states have call successors, (2364) [2022-11-03 02:46:29,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6791 states to 6791 states and 9727 transitions. [2022-11-03 02:46:29,956 INFO L78 Accepts]: Start accepts. Automaton has 6791 states and 9727 transitions. Word has length 111 [2022-11-03 02:46:29,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:29,956 INFO L495 AbstractCegarLoop]: Abstraction has 6791 states and 9727 transitions. [2022-11-03 02:46:29,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:46:29,957 INFO L276 IsEmpty]: Start isEmpty. Operand 6791 states and 9727 transitions. [2022-11-03 02:46:29,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-03 02:46:29,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:29,959 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:29,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:30,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:30,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:30,373 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 02:46:30,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:30,374 INFO L85 PathProgramCache]: Analyzing trace with hash -179664415, now seen corresponding path program 1 times [2022-11-03 02:46:30,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:30,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819081112] [2022-11-03 02:46:30,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:30,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:30,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:30,378 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:30,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 02:46:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:32,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 1528 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:46:32,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:32,951 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-11-03 02:46:32,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:46:33,854 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-11-03 02:46:33,855 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:33,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819081112] [2022-11-03 02:46:33,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819081112] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:46:33,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1203431909] [2022-11-03 02:46:33,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:33,855 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:46:33,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:46:33,856 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:46:33,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-11-03 02:46:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:35,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 1528 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:46:35,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:36,350 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-03 02:46:36,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:46:36,920 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-03 02:46:36,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1203431909] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:46:36,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:46:36,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16, 16, 4] total 24 [2022-11-03 02:46:36,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386517970] [2022-11-03 02:46:36,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:36,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:46:36,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:36,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:46:36,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:46:36,923 INFO L87 Difference]: Start difference. First operand 6791 states and 9727 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 02:46:37,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:37,980 INFO L93 Difference]: Finished difference Result 6801 states and 9736 transitions. [2022-11-03 02:46:37,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:46:37,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 116 [2022-11-03 02:46:37,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:38,010 INFO L225 Difference]: With dead ends: 6801 [2022-11-03 02:46:38,010 INFO L226 Difference]: Without dead ends: 6797 [2022-11-03 02:46:38,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2022-11-03 02:46:38,015 INFO L413 NwaCegarLoop]: 2768 mSDtfsCounter, 2729 mSDsluCounter, 5517 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2730 SdHoareTripleChecker+Valid, 8285 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:38,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2730 Valid, 8285 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:46:38,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6797 states. [2022-11-03 02:46:38,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6797 to 6797. [2022-11-03 02:46:38,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6797 states, 4397 states have (on average 1.2251535137593814) internal successors, (5387), 4593 states have internal predecessors, (5387), 1980 states have call successors, (1980), 430 states have call predecessors, (1980), 417 states have return successors, (2364), 1878 states have call predecessors, (2364), 1974 states have call successors, (2364) [2022-11-03 02:46:38,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6797 states to 6797 states and 9731 transitions. [2022-11-03 02:46:38,868 INFO L78 Accepts]: Start accepts. Automaton has 6797 states and 9731 transitions. Word has length 116 [2022-11-03 02:46:38,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:38,868 INFO L495 AbstractCegarLoop]: Abstraction has 6797 states and 9731 transitions. [2022-11-03 02:46:38,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 02:46:38,869 INFO L276 IsEmpty]: Start isEmpty. Operand 6797 states and 9731 transitions. [2022-11-03 02:46:38,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-03 02:46:38,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:38,871 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 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] [2022-11-03 02:46:38,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:39,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:39,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:46:39,285 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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 02:46:39,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:39,285 INFO L85 PathProgramCache]: Analyzing trace with hash -51615081, now seen corresponding path program 1 times [2022-11-03 02:46:39,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:39,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798319158] [2022-11-03 02:46:39,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:39,287 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:39,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:39,290 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:39,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 02:46:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:40,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 1535 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:46:40,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:41,761 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2022-11-03 02:46:41,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:46:42,571 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 25 proven. 3 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-11-03 02:46:42,571 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:42,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798319158] [2022-11-03 02:46:42,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798319158] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:46:42,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [778408666] [2022-11-03 02:46:42,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:42,572 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:46:42,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:46:42,573 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:46:42,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-03 02:46:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:43,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 1535 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:46:43,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:45,003 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-03 02:46:45,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:46:45,533 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-03 02:46:45,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [778408666] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:46:45,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:46:45,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16, 16, 4] total 24 [2022-11-03 02:46:45,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618812933] [2022-11-03 02:46:45,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:45,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:46:45,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:45,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:46:45,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:46:45,537 INFO L87 Difference]: Start difference. First operand 6797 states and 9731 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:46:46,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:46,605 INFO L93 Difference]: Finished difference Result 6803 states and 9736 transitions. [2022-11-03 02:46:46,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:46:46,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 121 [2022-11-03 02:46:46,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:46,636 INFO L225 Difference]: With dead ends: 6803 [2022-11-03 02:46:46,637 INFO L226 Difference]: Without dead ends: 6709 [2022-11-03 02:46:46,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2022-11-03 02:46:46,641 INFO L413 NwaCegarLoop]: 2769 mSDtfsCounter, 2729 mSDsluCounter, 5519 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2729 SdHoareTripleChecker+Valid, 8288 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:46,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2729 Valid, 8288 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:46:46,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6709 states. [2022-11-03 02:46:47,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6709 to 6709. [2022-11-03 02:46:47,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6709 states, 4346 states have (on average 1.2261849976990336) internal successors, (5329), 4539 states have internal predecessors, (5329), 1959 states have call successors, (1959), 413 states have call predecessors, (1959), 401 states have return successors, (2346), 1861 states have call predecessors, (2346), 1956 states have call successors, (2346) [2022-11-03 02:46:47,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6709 states to 6709 states and 9634 transitions. [2022-11-03 02:46:47,821 INFO L78 Accepts]: Start accepts. Automaton has 6709 states and 9634 transitions. Word has length 121 [2022-11-03 02:46:47,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:47,822 INFO L495 AbstractCegarLoop]: Abstraction has 6709 states and 9634 transitions. [2022-11-03 02:46:47,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:46:47,822 INFO L276 IsEmpty]: Start isEmpty. Operand 6709 states and 9634 transitions. [2022-11-03 02:46:47,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-03 02:46:47,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:47,825 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:47,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:48,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:48,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:46:48,241 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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 02:46:48,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:48,241 INFO L85 PathProgramCache]: Analyzing trace with hash 360188657, now seen corresponding path program 1 times [2022-11-03 02:46:48,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:48,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869266217] [2022-11-03 02:46:48,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:48,243 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:48,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:48,244 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:48,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 02:46:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:49,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 1805 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-03 02:46:49,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:51,083 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-03 02:46:51,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:51,083 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:51,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869266217] [2022-11-03 02:46:51,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869266217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:51,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:51,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 02:46:51,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349256366] [2022-11-03 02:46:51,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:51,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 02:46:51,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:51,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 02:46:51,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:46:51,086 INFO L87 Difference]: Start difference. First operand 6709 states and 9634 transitions. Second operand has 12 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-03 02:46:54,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:54,282 INFO L93 Difference]: Finished difference Result 13474 states and 19346 transitions. [2022-11-03 02:46:54,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 02:46:54,283 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) Word has length 150 [2022-11-03 02:46:54,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:54,315 INFO L225 Difference]: With dead ends: 13474 [2022-11-03 02:46:54,315 INFO L226 Difference]: Without dead ends: 6782 [2022-11-03 02:46:54,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:46:54,366 INFO L413 NwaCegarLoop]: 2782 mSDtfsCounter, 117 mSDsluCounter, 24791 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 27573 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:54,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 27573 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-03 02:46:54,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6782 states. [2022-11-03 02:46:55,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6782 to 6709. [2022-11-03 02:46:55,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6709 states, 4346 states have (on average 1.2259549010584445) internal successors, (5328), 4538 states have internal predecessors, (5328), 1959 states have call successors, (1959), 413 states have call predecessors, (1959), 401 states have return successors, (2346), 1861 states have call predecessors, (2346), 1956 states have call successors, (2346) [2022-11-03 02:46:55,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6709 states to 6709 states and 9633 transitions. [2022-11-03 02:46:55,364 INFO L78 Accepts]: Start accepts. Automaton has 6709 states and 9633 transitions. Word has length 150 [2022-11-03 02:46:55,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:55,364 INFO L495 AbstractCegarLoop]: Abstraction has 6709 states and 9633 transitions. [2022-11-03 02:46:55,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-03 02:46:55,365 INFO L276 IsEmpty]: Start isEmpty. Operand 6709 states and 9633 transitions. [2022-11-03 02:46:55,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 02:46:55,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:55,368 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:46:55,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:55,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:55,581 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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 02:46:55,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:55,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1123620686, now seen corresponding path program 1 times [2022-11-03 02:46:55,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:55,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248235881] [2022-11-03 02:46:55,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:55,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:55,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:55,585 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:55,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 02:46:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:57,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 1817 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:46:57,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:58,137 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-03 02:46:58,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:58,137 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:58,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248235881] [2022-11-03 02:46:58,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248235881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:58,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:58,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 02:46:58,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033328685] [2022-11-03 02:46:58,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:58,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:46:58,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:58,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:46:58,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:46:58,140 INFO L87 Difference]: Start difference. First operand 6709 states and 9633 transitions. Second operand has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 5 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-03 02:47:02,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:02,429 INFO L93 Difference]: Finished difference Result 13959 states and 20067 transitions. [2022-11-03 02:47:02,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 02:47:02,429 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 5 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) Word has length 154 [2022-11-03 02:47:02,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:02,468 INFO L225 Difference]: With dead ends: 13959 [2022-11-03 02:47:02,468 INFO L226 Difference]: Without dead ends: 7267 [2022-11-03 02:47:02,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:47:02,514 INFO L413 NwaCegarLoop]: 2879 mSDtfsCounter, 282 mSDsluCounter, 34006 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 36885 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:02,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 36885 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 02:47:02,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7267 states. [2022-11-03 02:47:03,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7267 to 6753. [2022-11-03 02:47:03,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6753 states, 4378 states have (on average 1.2243033348560988) internal successors, (5360), 4570 states have internal predecessors, (5360), 1967 states have call successors, (1967), 413 states have call predecessors, (1967), 405 states have return successors, (2358), 1873 states have call predecessors, (2358), 1964 states have call successors, (2358) [2022-11-03 02:47:03,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6753 states to 6753 states and 9685 transitions. [2022-11-03 02:47:03,587 INFO L78 Accepts]: Start accepts. Automaton has 6753 states and 9685 transitions. Word has length 154 [2022-11-03 02:47:03,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:03,587 INFO L495 AbstractCegarLoop]: Abstraction has 6753 states and 9685 transitions. [2022-11-03 02:47:03,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 5 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-03 02:47:03,587 INFO L276 IsEmpty]: Start isEmpty. Operand 6753 states and 9685 transitions. [2022-11-03 02:47:03,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 02:47:03,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:03,590 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:03,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 02:47:03,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:47:03,805 INFO L420 AbstractCegarLoop]: === Iteration 16 === 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 02:47:03,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:03,805 INFO L85 PathProgramCache]: Analyzing trace with hash 2006974356, now seen corresponding path program 1 times [2022-11-03 02:47:03,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:03,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14863043] [2022-11-03 02:47:03,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:03,807 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:03,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:03,808 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:03,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 02:47:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:05,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 1828 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:47:05,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:05,742 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-03 02:47:05,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:47:05,742 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:05,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14863043] [2022-11-03 02:47:05,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14863043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:05,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:05,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:47:05,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537924555] [2022-11-03 02:47:05,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:05,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:47:05,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:47:05,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:47:05,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:47:05,744 INFO L87 Difference]: Start difference. First operand 6753 states and 9685 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:47:08,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:47:08,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:08,995 INFO L93 Difference]: Finished difference Result 13585 states and 19513 transitions. [2022-11-03 02:47:08,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:47:08,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 158 [2022-11-03 02:47:08,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:09,023 INFO L225 Difference]: With dead ends: 13585 [2022-11-03 02:47:09,024 INFO L226 Difference]: Without dead ends: 6853 [2022-11-03 02:47:09,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:47:09,066 INFO L413 NwaCegarLoop]: 2773 mSDtfsCounter, 32 mSDsluCounter, 2724 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 5497 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:09,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 5497 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-03 02:47:09,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6853 states. [2022-11-03 02:47:10,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6853 to 6837. [2022-11-03 02:47:10,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6837 states, 4438 states have (on average 1.2230734565119423) internal successors, (5428), 4630 states have internal predecessors, (5428), 1991 states have call successors, (1991), 413 states have call predecessors, (1991), 405 states have return successors, (2382), 1897 states have call predecessors, (2382), 1988 states have call successors, (2382) [2022-11-03 02:47:10,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6837 states to 6837 states and 9801 transitions. [2022-11-03 02:47:10,207 INFO L78 Accepts]: Start accepts. Automaton has 6837 states and 9801 transitions. Word has length 158 [2022-11-03 02:47:10,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:10,207 INFO L495 AbstractCegarLoop]: Abstraction has 6837 states and 9801 transitions. [2022-11-03 02:47:10,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:47:10,208 INFO L276 IsEmpty]: Start isEmpty. Operand 6837 states and 9801 transitions. [2022-11-03 02:47:10,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-03 02:47:10,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:10,211 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:10,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-03 02:47:10,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:47:10,425 INFO L420 AbstractCegarLoop]: === Iteration 17 === 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 02:47:10,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:10,425 INFO L85 PathProgramCache]: Analyzing trace with hash -220279145, now seen corresponding path program 1 times [2022-11-03 02:47:10,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:10,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856460169] [2022-11-03 02:47:10,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:10,427 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:10,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:10,427 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:10,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 02:47:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:12,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 1836 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:47:12,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:13,087 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-03 02:47:13,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:47:13,087 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:13,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856460169] [2022-11-03 02:47:13,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856460169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:13,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:47:13,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-03 02:47:13,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135707735] [2022-11-03 02:47:13,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:13,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 02:47:13,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:47:13,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 02:47:13,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:47:13,090 INFO L87 Difference]: Start difference. First operand 6837 states and 9801 transitions. Second operand has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 6 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-03 02:47:17,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:17,716 INFO L93 Difference]: Finished difference Result 14422 states and 20741 transitions. [2022-11-03 02:47:17,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 02:47:17,717 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 6 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) Word has length 162 [2022-11-03 02:47:17,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:17,749 INFO L225 Difference]: With dead ends: 14422 [2022-11-03 02:47:17,750 INFO L226 Difference]: Without dead ends: 7602 [2022-11-03 02:47:17,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2022-11-03 02:47:17,790 INFO L413 NwaCegarLoop]: 2948 mSDtfsCounter, 418 mSDsluCounter, 37725 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 40673 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:17,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 40673 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-03 02:47:17,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7602 states. [2022-11-03 02:47:19,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7602 to 6845. [2022-11-03 02:47:19,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6845 states, 4442 states have (on average 1.2228725799189555) internal successors, (5432), 4638 states have internal predecessors, (5432), 1991 states have call successors, (1991), 413 states have call predecessors, (1991), 409 states have return successors, (2398), 1897 states have call predecessors, (2398), 1988 states have call successors, (2398) [2022-11-03 02:47:19,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6845 states to 6845 states and 9821 transitions. [2022-11-03 02:47:19,209 INFO L78 Accepts]: Start accepts. Automaton has 6845 states and 9821 transitions. Word has length 162 [2022-11-03 02:47:19,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:19,209 INFO L495 AbstractCegarLoop]: Abstraction has 6845 states and 9821 transitions. [2022-11-03 02:47:19,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 6 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-03 02:47:19,210 INFO L276 IsEmpty]: Start isEmpty. Operand 6845 states and 9821 transitions. [2022-11-03 02:47:19,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-03 02:47:19,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:19,211 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:19,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-03 02:47:19,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:47:19,412 INFO L420 AbstractCegarLoop]: === Iteration 18 === 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 02:47:19,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:19,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1246889559, now seen corresponding path program 1 times [2022-11-03 02:47:19,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:19,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [421847161] [2022-11-03 02:47:19,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:19,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:19,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:19,415 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:19,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 02:47:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:22,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 2426 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:47:22,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 33 proven. 15 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-03 02:47:23,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:47:26,673 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-03 02:47:26,673 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:26,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [421847161] [2022-11-03 02:47:26,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [421847161] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:47:26,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1228726612] [2022-11-03 02:47:26,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:26,674 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:47:26,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:47:26,675 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:47:26,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-03 02:47:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:28,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 2426 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:47:28,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:29,233 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 02:47:29,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:47:29,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1228726612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:29,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:47:29,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 13] total 28 [2022-11-03 02:47:29,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327875364] [2022-11-03 02:47:29,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:29,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:47:29,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:47:29,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:47:29,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2022-11-03 02:47:29,236 INFO L87 Difference]: Start difference. First operand 6845 states and 9821 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:47:31,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:47:32,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:32,999 INFO L93 Difference]: Finished difference Result 13729 states and 19729 transitions. [2022-11-03 02:47:33,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:47:33,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 181 [2022-11-03 02:47:33,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:33,023 INFO L225 Difference]: With dead ends: 13729 [2022-11-03 02:47:33,023 INFO L226 Difference]: Without dead ends: 6905 [2022-11-03 02:47:33,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 514 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=88, Invalid=782, Unknown=0, NotChecked=0, Total=870 [2022-11-03 02:47:33,059 INFO L413 NwaCegarLoop]: 2761 mSDtfsCounter, 24 mSDsluCounter, 8250 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 11011 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:33,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 11011 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 02:47:33,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6905 states. [2022-11-03 02:47:34,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6905 to 6897. [2022-11-03 02:47:34,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6897 states, 4486 states have (on average 1.22246990637539) internal successors, (5484), 4686 states have internal predecessors, (5484), 1999 states have call successors, (1999), 413 states have call predecessors, (1999), 409 states have return successors, (2406), 1905 states have call predecessors, (2406), 1996 states have call successors, (2406) [2022-11-03 02:47:34,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6897 states to 6897 states and 9889 transitions. [2022-11-03 02:47:34,525 INFO L78 Accepts]: Start accepts. Automaton has 6897 states and 9889 transitions. Word has length 181 [2022-11-03 02:47:34,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:34,525 INFO L495 AbstractCegarLoop]: Abstraction has 6897 states and 9889 transitions. [2022-11-03 02:47:34,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:47:34,525 INFO L276 IsEmpty]: Start isEmpty. Operand 6897 states and 9889 transitions. [2022-11-03 02:47:34,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-03 02:47:34,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:34,527 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:34,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-03 02:47:34,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2022-11-03 02:47:34,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:47:34,929 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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 02:47:34,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:34,929 INFO L85 PathProgramCache]: Analyzing trace with hash -882474446, now seen corresponding path program 1 times [2022-11-03 02:47:34,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:34,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478251310] [2022-11-03 02:47:34,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:34,931 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:34,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:34,932 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:34,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-03 02:47:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:37,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 2475 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:47:37,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:39,783 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 27 proven. 30 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-03 02:47:39,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:47:43,159 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 19 proven. 26 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-03 02:47:43,160 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:43,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478251310] [2022-11-03 02:47:43,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478251310] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:47:43,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [836409608] [2022-11-03 02:47:43,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:43,161 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:47:43,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:47:43,162 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:47:43,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-03 02:47:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:48,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 2475 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 02:47:48,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-03 02:47:49,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:47:50,365 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-11-03 02:47:50,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [836409608] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:47:50,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517492868] [2022-11-03 02:47:50,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:50,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:47:50,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:47:50,371 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:47:50,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-03 02:47:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:52,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 2475 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:47:52,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-03 02:47:53,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:47:53,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517492868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:47:53,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-03 02:47:53,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15, 13, 9, 9] total 33 [2022-11-03 02:47:53,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025616981] [2022-11-03 02:47:53,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:53,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:47:53,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:47:53,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:47:53,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=956, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 02:47:53,271 INFO L87 Difference]: Start difference. First operand 6897 states and 9889 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-03 02:47:54,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:54,527 INFO L93 Difference]: Finished difference Result 13807 states and 19833 transitions. [2022-11-03 02:47:54,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:47:54,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 202 [2022-11-03 02:47:54,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:54,553 INFO L225 Difference]: With dead ends: 13807 [2022-11-03 02:47:54,553 INFO L226 Difference]: Without dead ends: 6931 [2022-11-03 02:47:54,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1006 GetRequests, 974 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=104, Invalid=1018, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 02:47:54,587 INFO L413 NwaCegarLoop]: 2770 mSDtfsCounter, 234 mSDsluCounter, 5216 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 7986 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:54,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 7986 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:47:54,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6931 states. [2022-11-03 02:47:55,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6931 to 6895. [2022-11-03 02:47:55,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6895 states, 4484 states have (on average 1.2225691347011596) internal successors, (5482), 4684 states have internal predecessors, (5482), 1999 states have call successors, (1999), 413 states have call predecessors, (1999), 409 states have return successors, (2406), 1905 states have call predecessors, (2406), 1996 states have call successors, (2406) [2022-11-03 02:47:55,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6895 states to 6895 states and 9887 transitions. [2022-11-03 02:47:55,705 INFO L78 Accepts]: Start accepts. Automaton has 6895 states and 9887 transitions. Word has length 202 [2022-11-03 02:47:55,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:55,705 INFO L495 AbstractCegarLoop]: Abstraction has 6895 states and 9887 transitions. [2022-11-03 02:47:55,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-03 02:47:55,706 INFO L276 IsEmpty]: Start isEmpty. Operand 6895 states and 9887 transitions. [2022-11-03 02:47:55,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-11-03 02:47:55,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:55,708 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:55,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-03 02:47:55,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-03 02:47:56,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-03 02:47:56,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:47:56,309 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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 02:47:56,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:56,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1122953297, now seen corresponding path program 1 times [2022-11-03 02:47:56,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:56,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021752969] [2022-11-03 02:47:56,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:56,311 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:56,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:56,312 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:56,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-03 02:47:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:59,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 2486 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:47:59,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:01,137 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 27 proven. 30 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-03 02:48:01,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:48:04,318 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 19 proven. 26 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-11-03 02:48:04,318 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:04,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021752969] [2022-11-03 02:48:04,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021752969] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:48:04,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1935560126] [2022-11-03 02:48:04,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:04,319 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:48:04,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:48:04,320 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:48:04,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2022-11-03 02:48:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:09,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 2486 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 02:48:09,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2022-11-03 02:48:10,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:48:11,453 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-11-03 02:48:11,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1935560126] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:48:11,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287605792] [2022-11-03 02:48:11,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:11,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:48:11,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:48:11,454 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:48:11,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-03 02:48:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:13,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 2486 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:48:13,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:14,311 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-03 02:48:14,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:48:15,113 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2022-11-03 02:48:15,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287605792] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:48:15,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:48:15,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 9, 9, 5, 5] total 37 [2022-11-03 02:48:15,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983351349] [2022-11-03 02:48:15,114 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:48:15,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-03 02:48:15,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:15,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-03 02:48:15,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1219, Unknown=0, NotChecked=0, Total=1332 [2022-11-03 02:48:15,116 INFO L87 Difference]: Start difference. First operand 6895 states and 9887 transitions. Second operand has 37 states, 32 states have (on average 6.71875) internal successors, (215), 28 states have internal predecessors, (215), 17 states have call successors, (61), 5 states have call predecessors, (61), 7 states have return successors, (60), 18 states have call predecessors, (60), 14 states have call successors, (60) [2022-11-03 02:48:23,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:48:30,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:30,029 INFO L93 Difference]: Finished difference Result 13854 states and 19918 transitions. [2022-11-03 02:48:30,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 02:48:30,030 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 32 states have (on average 6.71875) internal successors, (215), 28 states have internal predecessors, (215), 17 states have call successors, (61), 5 states have call predecessors, (61), 7 states have return successors, (60), 18 states have call predecessors, (60), 14 states have call successors, (60) Word has length 203 [2022-11-03 02:48:30,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:30,052 INFO L225 Difference]: With dead ends: 13854 [2022-11-03 02:48:30,053 INFO L226 Difference]: Without dead ends: 6980 [2022-11-03 02:48:30,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1224 GetRequests, 1179 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=189, Invalid=1973, Unknown=0, NotChecked=0, Total=2162 [2022-11-03 02:48:30,082 INFO L413 NwaCegarLoop]: 2845 mSDtfsCounter, 634 mSDsluCounter, 66224 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 133 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 69069 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:30,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 69069 Invalid, 1812 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [133 Valid, 1678 Invalid, 1 Unknown, 0 Unchecked, 11.9s Time] [2022-11-03 02:48:30,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6980 states. [2022-11-03 02:48:31,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6980 to 6809. [2022-11-03 02:48:31,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6809 states, 4418 states have (on average 1.2200090538705297) internal successors, (5390), 4613 states have internal predecessors, (5390), 1980 states have call successors, (1980), 412 states have call predecessors, (1980), 408 states have return successors, (2387), 1887 states have call predecessors, (2387), 1977 states have call successors, (2387) [2022-11-03 02:48:31,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6809 states to 6809 states and 9757 transitions. [2022-11-03 02:48:31,200 INFO L78 Accepts]: Start accepts. Automaton has 6809 states and 9757 transitions. Word has length 203 [2022-11-03 02:48:31,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:31,201 INFO L495 AbstractCegarLoop]: Abstraction has 6809 states and 9757 transitions. [2022-11-03 02:48:31,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 32 states have (on average 6.71875) internal successors, (215), 28 states have internal predecessors, (215), 17 states have call successors, (61), 5 states have call predecessors, (61), 7 states have return successors, (60), 18 states have call predecessors, (60), 14 states have call successors, (60) [2022-11-03 02:48:31,201 INFO L276 IsEmpty]: Start isEmpty. Operand 6809 states and 9757 transitions. [2022-11-03 02:48:31,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-03 02:48:31,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:31,203 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:48:31,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-03 02:48:31,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2022-11-03 02:48:31,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-03 02:48:31,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:31,804 INFO L420 AbstractCegarLoop]: === Iteration 21 === 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 02:48:31,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:31,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1166249191, now seen corresponding path program 1 times [2022-11-03 02:48:31,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:31,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159017609] [2022-11-03 02:48:31,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:31,806 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:31,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:31,807 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:31,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-03 02:48:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:35,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 2948 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:48:35,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:35,317 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-03 02:48:35,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:48:35,318 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:35,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159017609] [2022-11-03 02:48:35,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159017609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:35,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:35,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:48:35,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468338349] [2022-11-03 02:48:35,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:35,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:48:35,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:35,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:48:35,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:48:35,321 INFO L87 Difference]: Start difference. First operand 6809 states and 9757 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 02:48:36,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:36,483 INFO L93 Difference]: Finished difference Result 14438 states and 20793 transitions. [2022-11-03 02:48:36,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:48:36,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 238 [2022-11-03 02:48:36,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:36,607 INFO L225 Difference]: With dead ends: 14438 [2022-11-03 02:48:36,607 INFO L226 Difference]: Without dead ends: 7650 [2022-11-03 02:48:36,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:48:36,630 INFO L413 NwaCegarLoop]: 2976 mSDtfsCounter, 277 mSDsluCounter, 2779 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 5755 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:36,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 5755 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:48:36,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7650 states. [2022-11-03 02:48:37,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7650 to 6813. [2022-11-03 02:48:37,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6813 states, 4422 states have (on average 1.2198100407055632) internal successors, (5394), 4617 states have internal predecessors, (5394), 1980 states have call successors, (1980), 412 states have call predecessors, (1980), 408 states have return successors, (2387), 1887 states have call predecessors, (2387), 1977 states have call successors, (2387) [2022-11-03 02:48:37,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6813 states to 6813 states and 9761 transitions. [2022-11-03 02:48:37,620 INFO L78 Accepts]: Start accepts. Automaton has 6813 states and 9761 transitions. Word has length 238 [2022-11-03 02:48:37,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:37,621 INFO L495 AbstractCegarLoop]: Abstraction has 6813 states and 9761 transitions. [2022-11-03 02:48:37,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 02:48:37,621 INFO L276 IsEmpty]: Start isEmpty. Operand 6813 states and 9761 transitions. [2022-11-03 02:48:37,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-03 02:48:37,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:37,623 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:48:37,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-03 02:48:37,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:37,824 INFO L420 AbstractCegarLoop]: === Iteration 22 === 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 02:48:37,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:37,824 INFO L85 PathProgramCache]: Analyzing trace with hash -369401712, now seen corresponding path program 1 times [2022-11-03 02:48:37,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:37,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877290361] [2022-11-03 02:48:37,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:37,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:37,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:37,827 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:37,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 02:48:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:41,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 2952 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:48:41,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:41,367 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-03 02:48:41,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:48:41,581 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2022-11-03 02:48:41,581 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:41,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877290361] [2022-11-03 02:48:41,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877290361] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:48:41,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [794257734] [2022-11-03 02:48:41,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:41,581 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:48:41,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:48:41,583 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:48:41,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2022-11-03 02:48:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:44,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 2952 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:48:44,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:44,300 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-11-03 02:48:44,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:48:44,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [794257734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:44,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:48:44,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-03 02:48:44,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74696073] [2022-11-03 02:48:44,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:44,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:48:44,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:44,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:48:44,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:48:44,303 INFO L87 Difference]: Start difference. First operand 6813 states and 9761 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 02:48:46,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:48:47,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:47,324 INFO L93 Difference]: Finished difference Result 13637 states and 19569 transitions. [2022-11-03 02:48:47,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:48:47,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 241 [2022-11-03 02:48:47,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:47,348 INFO L225 Difference]: With dead ends: 13637 [2022-11-03 02:48:47,348 INFO L226 Difference]: Without dead ends: 6845 [2022-11-03 02:48:47,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 715 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:48:47,376 INFO L413 NwaCegarLoop]: 2759 mSDtfsCounter, 8 mSDsluCounter, 2739 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5498 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:47,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 5498 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 02:48:47,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6845 states. [2022-11-03 02:48:48,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6845 to 6817. [2022-11-03 02:48:48,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6817 states, 4426 states have (on average 1.219611387257117) internal successors, (5398), 4621 states have internal predecessors, (5398), 1980 states have call successors, (1980), 412 states have call predecessors, (1980), 408 states have return successors, (2387), 1887 states have call predecessors, (2387), 1977 states have call successors, (2387) [2022-11-03 02:48:48,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6817 states to 6817 states and 9765 transitions. [2022-11-03 02:48:48,331 INFO L78 Accepts]: Start accepts. Automaton has 6817 states and 9765 transitions. Word has length 241 [2022-11-03 02:48:48,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:48,331 INFO L495 AbstractCegarLoop]: Abstraction has 6817 states and 9765 transitions. [2022-11-03 02:48:48,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 02:48:48,331 INFO L276 IsEmpty]: Start isEmpty. Operand 6817 states and 9765 transitions. [2022-11-03 02:48:48,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-03 02:48:48,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:48,333 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:48:48,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2022-11-03 02:48:48,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-03 02:48:48,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:48,749 INFO L420 AbstractCegarLoop]: === Iteration 23 === 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 02:48:48,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:48,749 INFO L85 PathProgramCache]: Analyzing trace with hash 51871473, now seen corresponding path program 1 times [2022-11-03 02:48:48,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:48,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762453475] [2022-11-03 02:48:48,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:48,751 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:48,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:48,752 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:48,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-03 02:48:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:52,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 2952 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:48:52,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:53,063 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-11-03 02:48:53,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:48:54,266 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-03 02:48:54,266 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:54,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762453475] [2022-11-03 02:48:54,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762453475] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:48:54,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1048082795] [2022-11-03 02:48:54,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:54,267 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:48:54,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:48:54,269 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:48:54,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2022-11-03 02:49:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:01,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 2952 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:49:01,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:49:01,319 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-11-03 02:49:01,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:49:01,610 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-03 02:49:01,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1048082795] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:49:01,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99289178] [2022-11-03 02:49:01,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:01,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:49:01,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:49:01,614 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:49:01,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-11-03 02:49:04,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:04,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 2952 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:49:04,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:49:06,074 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2022-11-03 02:49:06,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:49:06,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99289178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:49:06,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-03 02:49:06,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 8, 8, 8] total 17 [2022-11-03 02:49:06,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75104000] [2022-11-03 02:49:06,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:49:06,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:49:06,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:49:06,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:49:06,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:49:06,076 INFO L87 Difference]: Start difference. First operand 6817 states and 9765 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2022-11-03 02:49:07,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:49:07,176 INFO L93 Difference]: Finished difference Result 6825 states and 9771 transitions. [2022-11-03 02:49:07,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:49:07,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 241 [2022-11-03 02:49:07,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:49:07,195 INFO L225 Difference]: With dead ends: 6825 [2022-11-03 02:49:07,195 INFO L226 Difference]: Without dead ends: 6823 [2022-11-03 02:49:07,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1202 GetRequests, 1185 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-11-03 02:49:07,199 INFO L413 NwaCegarLoop]: 3886 mSDtfsCounter, 2188 mSDsluCounter, 10535 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2189 SdHoareTripleChecker+Valid, 14421 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:49:07,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2189 Valid, 14421 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:49:07,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6823 states. [2022-11-03 02:49:08,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6823 to 6817. [2022-11-03 02:49:08,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6817 states, 4426 states have (on average 1.219159511974695) internal successors, (5396), 4621 states have internal predecessors, (5396), 1980 states have call successors, (1980), 412 states have call predecessors, (1980), 408 states have return successors, (2387), 1887 states have call predecessors, (2387), 1977 states have call successors, (2387) [2022-11-03 02:49:08,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6817 states to 6817 states and 9763 transitions. [2022-11-03 02:49:08,141 INFO L78 Accepts]: Start accepts. Automaton has 6817 states and 9763 transitions. Word has length 241 [2022-11-03 02:49:08,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:49:08,142 INFO L495 AbstractCegarLoop]: Abstraction has 6817 states and 9763 transitions. [2022-11-03 02:49:08,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2022-11-03 02:49:08,142 INFO L276 IsEmpty]: Start isEmpty. Operand 6817 states and 9763 transitions. [2022-11-03 02:49:08,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-11-03 02:49:08,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:49:08,148 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:49:08,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-11-03 02:49:08,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2022-11-03 02:49:08,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-03 02:49:08,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:49:08,757 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_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 02:49:08,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:49:08,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1658999505, now seen corresponding path program 1 times [2022-11-03 02:49:08,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:49:08,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132737201] [2022-11-03 02:49:08,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:08,760 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:49:08,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:49:08,761 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:49:08,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f33a748-69e6-4bf1-946e-f71ecdbb9a28/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process