./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24989b40-969f-430f-a198-d2cac6876d72/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24989b40-969f-430f-a198-d2cac6876d72/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_24989b40-969f-430f-a198-d2cac6876d72/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24989b40-969f-430f-a198-d2cac6876d72/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24989b40-969f-430f-a198-d2cac6876d72/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_24989b40-969f-430f-a198-d2cac6876d72/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 82e959473290e80a4f353bcd3c2747bafa4ce239975e14e29f8e5bf5eff4b01b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:24:56,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:24:56,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:24:56,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:24:56,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:24:56,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:24:56,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:24:56,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:24:56,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:24:56,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:24:56,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:24:56,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:24:56,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:24:56,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:24:56,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:24:56,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:24:56,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:24:56,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:24:56,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:24:56,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:24:56,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:24:56,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:24:56,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:24:56,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:24:56,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:24:56,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:24:56,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:24:56,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:24:56,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:24:56,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:24:56,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:24:56,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:24:56,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:24:56,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:24:56,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:24:56,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:24:56,432 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:24:56,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:24:56,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:24:56,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:24:56,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:24:56,436 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24989b40-969f-430f-a198-d2cac6876d72/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:24:56,470 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:24:56,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:24:56,471 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:24:56,471 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:24:56,472 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:24:56,472 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:24:56,472 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:24:56,472 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:24:56,473 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:24:56,473 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:24:56,474 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:24:56,474 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:24:56,474 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:24:56,474 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:24:56,474 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:24:56,475 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:24:56,475 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:24:56,475 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:24:56,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:24:56,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:24:56,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:24:56,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:24:56,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:24:56,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:24:56,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:24:56,477 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:24:56,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:24:56,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:24:56,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:24:56,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:24:56,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:24:56,486 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:24:56,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:24:56,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:24:56,487 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:24:56,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:24:56,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:24:56,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:24:56,487 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_24989b40-969f-430f-a198-d2cac6876d72/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24989b40-969f-430f-a198-d2cac6876d72/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82e959473290e80a4f353bcd3c2747bafa4ce239975e14e29f8e5bf5eff4b01b [2022-11-03 02:24:56,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:24:56,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:24:56,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:24:56,835 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:24:56,836 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:24:56,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24989b40-969f-430f-a198-d2cac6876d72/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i [2022-11-03 02:24:56,926 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24989b40-969f-430f-a198-d2cac6876d72/bin/utaipan-7li7fVZpFI/data/55c95ea4d/cf7ff7de02d74832868f4ce5509f71e0/FLAG2fde32c53 [2022-11-03 02:24:57,936 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:24:57,937 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24989b40-969f-430f-a198-d2cac6876d72/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i [2022-11-03 02:24:57,988 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24989b40-969f-430f-a198-d2cac6876d72/bin/utaipan-7li7fVZpFI/data/55c95ea4d/cf7ff7de02d74832868f4ce5509f71e0/FLAG2fde32c53 [2022-11-03 02:24:58,323 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24989b40-969f-430f-a198-d2cac6876d72/bin/utaipan-7li7fVZpFI/data/55c95ea4d/cf7ff7de02d74832868f4ce5509f71e0 [2022-11-03 02:24:58,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:24:58,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:24:58,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:24:58,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:24:58,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:24:58,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:24:58" (1/1) ... [2022-11-03 02:24:58,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256cbcd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:58, skipping insertion in model container [2022-11-03 02:24:58,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:24:58" (1/1) ... [2022-11-03 02:24:58,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:24:58,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:25:01,504 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24989b40-969f-430f-a198-d2cac6876d72/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343367,343380] [2022-11-03 02:25:01,508 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_24989b40-969f-430f-a198-d2cac6876d72/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343536,343549] [2022-11-03 02:25:01,508 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_24989b40-969f-430f-a198-d2cac6876d72/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343703,343716] [2022-11-03 02:25:01,509 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_24989b40-969f-430f-a198-d2cac6876d72/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343871,343884] [2022-11-03 02:25:01,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:25:01,585 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:25:02,022 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_24989b40-969f-430f-a198-d2cac6876d72/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343367,343380] [2022-11-03 02:25:02,023 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_24989b40-969f-430f-a198-d2cac6876d72/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343536,343549] [2022-11-03 02:25:02,023 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_24989b40-969f-430f-a198-d2cac6876d72/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343703,343716] [2022-11-03 02:25:02,024 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_24989b40-969f-430f-a198-d2cac6876d72/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343871,343884] [2022-11-03 02:25:02,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:25:02,245 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:25:02,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:02 WrapperNode [2022-11-03 02:25:02,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:25:02,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:25:02,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:25:02,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:25:02,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:02" (1/1) ... [2022-11-03 02:25:02,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:02" (1/1) ... [2022-11-03 02:25:02,561 INFO L138 Inliner]: procedures = 454, calls = 1948, calls flagged for inlining = 238, calls inlined = 222, statements flattened = 5194 [2022-11-03 02:25:02,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:25:02,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:25:02,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:25:02,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:25:02,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:02" (1/1) ... [2022-11-03 02:25:02,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:02" (1/1) ... [2022-11-03 02:25:02,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:02" (1/1) ... [2022-11-03 02:25:02,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:02" (1/1) ... [2022-11-03 02:25:02,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:02" (1/1) ... [2022-11-03 02:25:02,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:02" (1/1) ... [2022-11-03 02:25:02,852 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:02" (1/1) ... [2022-11-03 02:25:02,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:02" (1/1) ... [2022-11-03 02:25:02,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:25:02,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:25:02,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:25:02,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:25:02,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:02" (1/1) ... [2022-11-03 02:25:02,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:25:02,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24989b40-969f-430f-a198-d2cac6876d72/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:25:02,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24989b40-969f-430f-a198-d2cac6876d72/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:25:02,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24989b40-969f-430f-a198-d2cac6876d72/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:25:03,001 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_init_rxfilter [2022-11-03 02:25:03,002 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_init_rxfilter [2022-11-03 02:25:03,002 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2022-11-03 02:25:03,002 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2022-11-03 02:25:03,002 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 02:25:03,002 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 02:25:03,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:25:03,003 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:25:03,003 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-03 02:25:03,003 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-03 02:25:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 02:25:03,004 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 02:25:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:25:03,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:25:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:25:03,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:25:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-03 02:25:03,006 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-03 02:25:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 02:25:03,006 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 02:25:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-03 02:25:03,007 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-03 02:25:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_default_phy [2022-11-03 02:25:03,007 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_default_phy [2022-11-03 02:25:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-11-03 02:25:03,007 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-11-03 02:25:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_75 [2022-11-03 02:25:03,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_75 [2022-11-03 02:25:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_66 [2022-11-03 02:25:03,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_66 [2022-11-03 02:25:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-03 02:25:03,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-03 02:25:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 02:25:03,009 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 02:25:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_check_mode [2022-11-03 02:25:03,009 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_check_mode [2022-11-03 02:25:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 02:25:03,010 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 02:25:03,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:25:03,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:25:03,010 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 02:25:03,011 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 02:25:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-03 02:25:03,012 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-03 02:25:03,012 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 02:25:03,012 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 02:25:03,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:25:03,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:25:03,013 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_remove [2022-11-03 02:25:03,013 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_remove [2022-11-03 02:25:03,013 INFO L130 BoogieDeclarations]: Found specification of procedure sis630_set_eq [2022-11-03 02:25:03,014 INFO L138 BoogieDeclarations]: Found implementation of procedure sis630_set_eq [2022-11-03 02:25:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_device [2022-11-03 02:25:03,014 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_device [2022-11-03 02:25:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 02:25:03,015 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 02:25:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:25:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_sis900_cleanup_module_14_2 [2022-11-03 02:25:03,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_sis900_cleanup_module_14_2 [2022-11-03 02:25:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_init_tx_ring [2022-11-03 02:25:03,016 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_init_tx_ring [2022-11-03 02:25:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:25:03,016 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:25:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_sis900_private [2022-11-03 02:25:03,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_sis900_private [2022-11-03 02:25:03,017 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:25:03,017 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:25:03,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:25:03,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:25:03,018 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_set_mode [2022-11-03 02:25:03,018 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_set_mode [2022-11-03 02:25:03,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:25:03,018 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-03 02:25:03,019 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-03 02:25:03,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_sis900_private [2022-11-03 02:25:03,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_sis900_private [2022-11-03 02:25:03,020 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 02:25:03,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 02:25:03,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 02:25:03,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 02:25:03,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 02:25:03,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 02:25:03,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 02:25:03,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 02:25:03,022 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 02:25:03,023 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 02:25:03,023 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_interrupt [2022-11-03 02:25:03,023 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_interrupt [2022-11-03 02:25:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_reset_phy [2022-11-03 02:25:03,024 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_reset_phy [2022-11-03 02:25:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:25:03,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:25:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:25:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 02:25:03,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 02:25:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 02:25:03,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 02:25:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:25:03,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:25:03,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:25:03,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:25:03,026 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-11-03 02:25:03,026 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-11-03 02:25:03,027 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_open [2022-11-03 02:25:03,028 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_open [2022-11-03 02:25:03,030 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:25:03,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:25:03,030 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_nway_reset [2022-11-03 02:25:03,030 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_nway_reset [2022-11-03 02:25:03,031 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-03 02:25:03,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-03 02:25:03,032 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:25:03,032 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:25:03,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 02:25:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 02:25:03,036 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-03 02:25:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-03 02:25:03,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:25:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:25:03,036 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_close [2022-11-03 02:25:03,037 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_close [2022-11-03 02:25:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:25:03,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:25:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:25:03,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:25:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 02:25:03,038 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 02:25:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 02:25:03,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 02:25:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_reset [2022-11-03 02:25:03,038 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_reset [2022-11-03 02:25:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 02:25:03,038 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 02:25:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:25:03,039 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:25:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-03 02:25:03,039 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-03 02:25:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 02:25:03,039 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 02:25:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2022-11-03 02:25:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2022-11-03 02:25:03,040 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-03 02:25:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-03 02:25:03,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:25:03,040 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 02:25:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 02:25:03,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_74 [2022-11-03 02:25:03,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_74 [2022-11-03 02:25:03,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:25:03,041 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-03 02:25:03,041 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-03 02:25:03,041 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_init_rx_ring [2022-11-03 02:25:03,041 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_init_rx_ring [2022-11-03 02:25:03,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:25:03,042 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-03 02:25:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-03 02:25:03,042 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:25:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:25:03,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:25:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:25:03,043 INFO L130 BoogieDeclarations]: Found specification of procedure eth_hw_addr_random [2022-11-03 02:25:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_hw_addr_random [2022-11-03 02:25:03,043 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-03 02:25:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-03 02:25:03,043 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2022-11-03 02:25:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2022-11-03 02:25:03,044 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_poll [2022-11-03 02:25:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_poll [2022-11-03 02:25:03,044 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 02:25:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 02:25:03,044 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:25:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:25:03,045 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-11-03 02:25:03,045 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-11-03 02:25:03,045 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:25:03,045 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:25:03,045 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:25:03,045 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:25:03,045 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_resume [2022-11-03 02:25:03,046 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_resume [2022-11-03 02:25:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:25:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:25:03,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:25:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dev_put [2022-11-03 02:25:03,046 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dev_put [2022-11-03 02:25:03,047 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_idle [2022-11-03 02:25:03,047 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_idle [2022-11-03 02:25:03,047 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_tx_timeout [2022-11-03 02:25:03,047 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_tx_timeout [2022-11-03 02:25:03,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:25:03,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:25:03,047 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-03 02:25:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-03 02:25:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-03 02:25:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-03 02:25:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:25:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:25:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:25:03,957 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:25:03,960 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:25:04,320 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:25:07,837 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 02:25:07,942 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:25:09,733 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:25:09,734 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:25:09,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:09 BoogieIcfgContainer [2022-11-03 02:25:09,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:25:09,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:25:09,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:25:09,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:25:09,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:24:58" (1/3) ... [2022-11-03 02:25:09,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6728a782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:25:09, skipping insertion in model container [2022-11-03 02:25:09,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:02" (2/3) ... [2022-11-03 02:25:09,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6728a782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:25:09, skipping insertion in model container [2022-11-03 02:25:09,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:09" (3/3) ... [2022-11-03 02:25:09,748 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i [2022-11-03 02:25:09,767 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:25:09,767 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 02:25:09,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:25:09,866 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;@6c543ce0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:25:09,866 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 02:25:09,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 1444 states, 823 states have (on average 1.2940461725394896) internal successors, (1065), 850 states have internal predecessors, (1065), 526 states have call successors, (526), 93 states have call predecessors, (526), 92 states have return successors, (520), 512 states have call predecessors, (520), 520 states have call successors, (520) [2022-11-03 02:25:09,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-03 02:25:09,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:09,911 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:09,912 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 02:25:09,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:09,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1243716692, now seen corresponding path program 1 times [2022-11-03 02:25:09,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:09,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606271695] [2022-11-03 02:25:09,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:09,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:10,784 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-11-03 02:25:10,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:10,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606271695] [2022-11-03 02:25:10,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606271695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:10,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:10,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:10,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961756779] [2022-11-03 02:25:10,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:10,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:10,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:10,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:10,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:10,842 INFO L87 Difference]: Start difference. First operand has 1444 states, 823 states have (on average 1.2940461725394896) internal successors, (1065), 850 states have internal predecessors, (1065), 526 states have call successors, (526), 93 states have call predecessors, (526), 92 states have return successors, (520), 512 states have call predecessors, (520), 520 states have call successors, (520) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:25:15,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:16,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:16,015 INFO L93 Difference]: Finished difference Result 4019 states and 5936 transitions. [2022-11-03 02:25:16,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:16,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 131 [2022-11-03 02:25:16,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:16,058 INFO L225 Difference]: With dead ends: 4019 [2022-11-03 02:25:16,058 INFO L226 Difference]: Without dead ends: 2588 [2022-11-03 02:25:16,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:16,078 INFO L413 NwaCegarLoop]: 2223 mSDtfsCounter, 1686 mSDsluCounter, 2058 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1686 SdHoareTripleChecker+Valid, 4004 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:16,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1686 Valid, 4004 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 593 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-03 02:25:16,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2022-11-03 02:25:16,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 2584. [2022-11-03 02:25:16,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2584 states, 1484 states have (on average 1.284366576819407) internal successors, (1906), 1531 states have internal predecessors, (1906), 922 states have call successors, (922), 176 states have call predecessors, (922), 175 states have return successors, (918), 904 states have call predecessors, (918), 918 states have call successors, (918) [2022-11-03 02:25:16,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 3746 transitions. [2022-11-03 02:25:16,396 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 3746 transitions. Word has length 131 [2022-11-03 02:25:16,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:16,399 INFO L495 AbstractCegarLoop]: Abstraction has 2584 states and 3746 transitions. [2022-11-03 02:25:16,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:25:16,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 3746 transitions. [2022-11-03 02:25:16,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-03 02:25:16,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:16,413 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:16,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:25:16,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:25:16,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:16,415 INFO L85 PathProgramCache]: Analyzing trace with hash 886160220, now seen corresponding path program 1 times [2022-11-03 02:25:16,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:16,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848343600] [2022-11-03 02:25:16,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:16,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:16,746 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-11-03 02:25:16,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:16,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848343600] [2022-11-03 02:25:16,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848343600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:16,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:16,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:16,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017100175] [2022-11-03 02:25:16,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:16,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:16,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:16,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:16,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:16,750 INFO L87 Difference]: Start difference. First operand 2584 states and 3746 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 02:25:21,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:22,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:22,223 INFO L93 Difference]: Finished difference Result 7612 states and 11040 transitions. [2022-11-03 02:25:22,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:22,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 135 [2022-11-03 02:25:22,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:22,257 INFO L225 Difference]: With dead ends: 7612 [2022-11-03 02:25:22,257 INFO L226 Difference]: Without dead ends: 5051 [2022-11-03 02:25:22,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:22,271 INFO L413 NwaCegarLoop]: 2309 mSDtfsCounter, 2028 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2028 SdHoareTripleChecker+Valid, 4054 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:22,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2028 Valid, 4054 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-03 02:25:22,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5051 states. [2022-11-03 02:25:22,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5051 to 5022. [2022-11-03 02:25:22,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5022 states, 2893 states have (on average 1.2858624265468372) internal successors, (3720), 2989 states have internal predecessors, (3720), 1782 states have call successors, (1782), 349 states have call predecessors, (1782), 344 states have return successors, (1783), 1737 states have call predecessors, (1783), 1778 states have call successors, (1783) [2022-11-03 02:25:22,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5022 states to 5022 states and 7285 transitions. [2022-11-03 02:25:22,583 INFO L78 Accepts]: Start accepts. Automaton has 5022 states and 7285 transitions. Word has length 135 [2022-11-03 02:25:22,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:22,585 INFO L495 AbstractCegarLoop]: Abstraction has 5022 states and 7285 transitions. [2022-11-03 02:25:22,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 02:25:22,586 INFO L276 IsEmpty]: Start isEmpty. Operand 5022 states and 7285 transitions. [2022-11-03 02:25:22,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-03 02:25:22,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:22,589 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:22,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:25:22,590 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:25:22,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:22,590 INFO L85 PathProgramCache]: Analyzing trace with hash 980334413, now seen corresponding path program 1 times [2022-11-03 02:25:22,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:22,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188964365] [2022-11-03 02:25:22,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:22,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:22,831 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-11-03 02:25:22,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:22,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188964365] [2022-11-03 02:25:22,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188964365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:22,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:22,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:22,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937422958] [2022-11-03 02:25:22,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:22,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:22,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:22,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:22,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:22,836 INFO L87 Difference]: Start difference. First operand 5022 states and 7285 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:25:24,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:29,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:29,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:29,812 INFO L93 Difference]: Finished difference Result 12002 states and 17344 transitions. [2022-11-03 02:25:29,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:29,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 137 [2022-11-03 02:25:29,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:29,874 INFO L225 Difference]: With dead ends: 12002 [2022-11-03 02:25:29,874 INFO L226 Difference]: Without dead ends: 7003 [2022-11-03 02:25:29,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:29,916 INFO L413 NwaCegarLoop]: 2243 mSDtfsCounter, 1742 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1742 SdHoareTripleChecker+Valid, 3985 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:29,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1742 Valid, 3985 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 610 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-03 02:25:29,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7003 states. [2022-11-03 02:25:30,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7003 to 6975. [2022-11-03 02:25:30,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6975 states, 3962 states have (on average 1.2665320545179202) internal successors, (5018), 4106 states have internal predecessors, (5018), 2507 states have call successors, (2507), 511 states have call predecessors, (2507), 503 states have return successors, (2512), 2439 states have call predecessors, (2512), 2503 states have call successors, (2512) [2022-11-03 02:25:30,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6975 states to 6975 states and 10037 transitions. [2022-11-03 02:25:30,574 INFO L78 Accepts]: Start accepts. Automaton has 6975 states and 10037 transitions. Word has length 137 [2022-11-03 02:25:30,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:30,575 INFO L495 AbstractCegarLoop]: Abstraction has 6975 states and 10037 transitions. [2022-11-03 02:25:30,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:25:30,576 INFO L276 IsEmpty]: Start isEmpty. Operand 6975 states and 10037 transitions. [2022-11-03 02:25:30,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-03 02:25:30,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:30,579 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 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 02:25:30,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:25:30,580 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:25:30,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:30,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1828419013, now seen corresponding path program 1 times [2022-11-03 02:25:30,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:30,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607833193] [2022-11-03 02:25:30,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:30,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:31,265 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2022-11-03 02:25:31,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:31,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607833193] [2022-11-03 02:25:31,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607833193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:31,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:31,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:25:31,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242954135] [2022-11-03 02:25:31,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:31,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:25:31,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:31,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:25:31,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:25:31,268 INFO L87 Difference]: Start difference. First operand 6975 states and 10037 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 02:25:35,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:37,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:41,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:45,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:45,984 INFO L93 Difference]: Finished difference Result 17439 states and 25016 transitions. [2022-11-03 02:25:45,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:25:45,985 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 144 [2022-11-03 02:25:45,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:46,057 INFO L225 Difference]: With dead ends: 17439 [2022-11-03 02:25:46,057 INFO L226 Difference]: Without dead ends: 10487 [2022-11-03 02:25:46,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:25:46,098 INFO L413 NwaCegarLoop]: 2900 mSDtfsCounter, 5038 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 1886 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5140 SdHoareTripleChecker+Valid, 5147 SdHoareTripleChecker+Invalid, 4358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1886 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:46,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5140 Valid, 5147 Invalid, 4358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1886 Valid, 2471 Invalid, 1 Unknown, 0 Unchecked, 14.0s Time] [2022-11-03 02:25:46,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10487 states. [2022-11-03 02:25:46,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10487 to 10417. [2022-11-03 02:25:46,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10417 states, 6027 states have (on average 1.271445163431226) internal successors, (7663), 6227 states have internal predecessors, (7663), 3589 states have call successors, (3589), 817 states have call predecessors, (3589), 798 states have return successors, (3592), 3481 states have call predecessors, (3592), 3585 states have call successors, (3592) [2022-11-03 02:25:46,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10417 states to 10417 states and 14844 transitions. [2022-11-03 02:25:46,746 INFO L78 Accepts]: Start accepts. Automaton has 10417 states and 14844 transitions. Word has length 144 [2022-11-03 02:25:46,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:46,747 INFO L495 AbstractCegarLoop]: Abstraction has 10417 states and 14844 transitions. [2022-11-03 02:25:46,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 02:25:46,747 INFO L276 IsEmpty]: Start isEmpty. Operand 10417 states and 14844 transitions. [2022-11-03 02:25:46,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-03 02:25:46,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:46,752 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:46,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:25:46,752 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 02:25:46,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:46,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1807267558, now seen corresponding path program 1 times [2022-11-03 02:25:46,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:46,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212044001] [2022-11-03 02:25:46,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:46,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2022-11-03 02:25:47,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:47,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212044001] [2022-11-03 02:25:47,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212044001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:47,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:47,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:47,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405836798] [2022-11-03 02:25:47,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:47,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:47,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:47,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:47,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:47,255 INFO L87 Difference]: Start difference. First operand 10417 states and 14844 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:25:49,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:51,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:54,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:56,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:56,625 INFO L93 Difference]: Finished difference Result 14301 states and 20248 transitions. [2022-11-03 02:25:56,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:25:56,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 173 [2022-11-03 02:25:56,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:56,707 INFO L225 Difference]: With dead ends: 14301 [2022-11-03 02:25:56,707 INFO L226 Difference]: Without dead ends: 14299 [2022-11-03 02:25:56,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:25:56,719 INFO L413 NwaCegarLoop]: 2164 mSDtfsCounter, 1433 mSDsluCounter, 6939 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 8244 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:56,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1444 Valid, 8244 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1166 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-11-03 02:25:56,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14299 states. [2022-11-03 02:25:57,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14299 to 14293. [2022-11-03 02:25:57,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14293 states, 8218 states have (on average 1.262350936967632) internal successors, (10374), 8494 states have internal predecessors, (10374), 4934 states have call successors, (4934), 1166 states have call predecessors, (4934), 1138 states have return successors, (4935), 4784 states have call predecessors, (4935), 4926 states have call successors, (4935) [2022-11-03 02:25:57,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14293 states to 14293 states and 20243 transitions. [2022-11-03 02:25:57,647 INFO L78 Accepts]: Start accepts. Automaton has 14293 states and 20243 transitions. Word has length 173 [2022-11-03 02:25:57,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:57,648 INFO L495 AbstractCegarLoop]: Abstraction has 14293 states and 20243 transitions. [2022-11-03 02:25:57,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:25:57,649 INFO L276 IsEmpty]: Start isEmpty. Operand 14293 states and 20243 transitions. [2022-11-03 02:25:57,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-03 02:25:57,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:57,653 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:57,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:25:57,654 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 02:25:57,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:57,654 INFO L85 PathProgramCache]: Analyzing trace with hash -545586692, now seen corresponding path program 1 times [2022-11-03 02:25:57,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:57,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833955874] [2022-11-03 02:25:57,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:57,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:58,106 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2022-11-03 02:25:58,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:58,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833955874] [2022-11-03 02:25:58,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833955874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:58,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:58,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:58,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182993845] [2022-11-03 02:25:58,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:58,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:58,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:58,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:58,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:58,109 INFO L87 Difference]: Start difference. First operand 14293 states and 20243 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, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:26:02,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:05,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:06,964 WARN L539 Checker$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 02:26:07,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:07,877 INFO L93 Difference]: Finished difference Result 14305 states and 20251 transitions. [2022-11-03 02:26:07,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:07,885 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, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 181 [2022-11-03 02:26:07,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:07,964 INFO L225 Difference]: With dead ends: 14305 [2022-11-03 02:26:07,964 INFO L226 Difference]: Without dead ends: 14303 [2022-11-03 02:26:07,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:26:07,977 INFO L413 NwaCegarLoop]: 2167 mSDtfsCounter, 1427 mSDsluCounter, 6939 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 8247 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:07,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 8247 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1166 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2022-11-03 02:26:07,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14303 states. [2022-11-03 02:26:08,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14303 to 14297. [2022-11-03 02:26:08,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14297 states, 8221 states have (on average 1.2622552000973117) internal successors, (10377), 8497 states have internal predecessors, (10377), 4934 states have call successors, (4934), 1167 states have call predecessors, (4934), 1139 states have return successors, (4935), 4784 states have call predecessors, (4935), 4926 states have call successors, (4935) [2022-11-03 02:26:08,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14297 states to 14297 states and 20246 transitions. [2022-11-03 02:26:08,948 INFO L78 Accepts]: Start accepts. Automaton has 14297 states and 20246 transitions. Word has length 181 [2022-11-03 02:26:08,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:08,949 INFO L495 AbstractCegarLoop]: Abstraction has 14297 states and 20246 transitions. [2022-11-03 02:26:08,950 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, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:26:08,950 INFO L276 IsEmpty]: Start isEmpty. Operand 14297 states and 20246 transitions. [2022-11-03 02:26:08,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-03 02:26:08,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:08,954 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:08,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:26:08,954 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 02:26:08,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:08,955 INFO L85 PathProgramCache]: Analyzing trace with hash -154652826, now seen corresponding path program 1 times [2022-11-03 02:26:08,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:08,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793182253] [2022-11-03 02:26:08,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:08,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2022-11-03 02:26:09,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:09,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793182253] [2022-11-03 02:26:09,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793182253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:09,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:09,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:09,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156802183] [2022-11-03 02:26:09,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:09,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:09,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:09,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:09,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:09,407 INFO L87 Difference]: Start difference. First operand 14297 states and 20246 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:26:11,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:15,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:17,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:17,487 INFO L93 Difference]: Finished difference Result 14309 states and 20254 transitions. [2022-11-03 02:26:17,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:17,488 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 183 [2022-11-03 02:26:17,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:17,562 INFO L225 Difference]: With dead ends: 14309 [2022-11-03 02:26:17,562 INFO L226 Difference]: Without dead ends: 14307 [2022-11-03 02:26:17,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:26:17,573 INFO L413 NwaCegarLoop]: 2167 mSDtfsCounter, 1428 mSDsluCounter, 6939 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 8247 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:17,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 8247 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1166 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-11-03 02:26:17,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14307 states. [2022-11-03 02:26:18,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14307 to 14301. [2022-11-03 02:26:18,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14301 states, 8224 states have (on average 1.26215953307393) internal successors, (10380), 8500 states have internal predecessors, (10380), 4934 states have call successors, (4934), 1168 states have call predecessors, (4934), 1140 states have return successors, (4935), 4784 states have call predecessors, (4935), 4926 states have call successors, (4935) [2022-11-03 02:26:18,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14301 states to 14301 states and 20249 transitions. [2022-11-03 02:26:18,529 INFO L78 Accepts]: Start accepts. Automaton has 14301 states and 20249 transitions. Word has length 183 [2022-11-03 02:26:18,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:18,530 INFO L495 AbstractCegarLoop]: Abstraction has 14301 states and 20249 transitions. [2022-11-03 02:26:18,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:26:18,530 INFO L276 IsEmpty]: Start isEmpty. Operand 14301 states and 20249 transitions. [2022-11-03 02:26:18,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-03 02:26:18,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:18,534 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 5, 5, 4, 3, 3, 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] [2022-11-03 02:26:18,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:26:18,535 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 02:26:18,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:18,535 INFO L85 PathProgramCache]: Analyzing trace with hash 773332745, now seen corresponding path program 1 times [2022-11-03 02:26:18,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:18,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582193481] [2022-11-03 02:26:18,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:18,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:18,954 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2022-11-03 02:26:18,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:18,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582193481] [2022-11-03 02:26:18,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582193481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:18,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:18,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:18,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202796586] [2022-11-03 02:26:18,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:18,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:18,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:18,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:18,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:18,958 INFO L87 Difference]: Start difference. First operand 14301 states and 20249 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, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 02:26:23,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:26,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:26,552 INFO L93 Difference]: Finished difference Result 14313 states and 20257 transitions. [2022-11-03 02:26:26,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:26,553 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, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 192 [2022-11-03 02:26:26,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:26,620 INFO L225 Difference]: With dead ends: 14313 [2022-11-03 02:26:26,621 INFO L226 Difference]: Without dead ends: 14311 [2022-11-03 02:26:26,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:26:26,630 INFO L413 NwaCegarLoop]: 2167 mSDtfsCounter, 1427 mSDsluCounter, 6939 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 8247 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:26,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1435 Valid, 8247 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1166 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-03 02:26:26,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14311 states. [2022-11-03 02:26:27,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14311 to 14305. [2022-11-03 02:26:27,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14305 states, 8227 states have (on average 1.262063935821077) internal successors, (10383), 8503 states have internal predecessors, (10383), 4934 states have call successors, (4934), 1169 states have call predecessors, (4934), 1141 states have return successors, (4935), 4784 states have call predecessors, (4935), 4926 states have call successors, (4935) [2022-11-03 02:26:27,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14305 states to 14305 states and 20252 transitions. [2022-11-03 02:26:27,565 INFO L78 Accepts]: Start accepts. Automaton has 14305 states and 20252 transitions. Word has length 192 [2022-11-03 02:26:27,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:27,566 INFO L495 AbstractCegarLoop]: Abstraction has 14305 states and 20252 transitions. [2022-11-03 02:26:27,566 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, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 02:26:27,566 INFO L276 IsEmpty]: Start isEmpty. Operand 14305 states and 20252 transitions. [2022-11-03 02:26:27,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-03 02:26:27,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:27,571 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:27,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:26:27,572 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 02:26:27,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:27,572 INFO L85 PathProgramCache]: Analyzing trace with hash 61650918, now seen corresponding path program 1 times [2022-11-03 02:26:27,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:27,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256902484] [2022-11-03 02:26:27,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:27,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:27,971 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2022-11-03 02:26:27,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:27,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256902484] [2022-11-03 02:26:27,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256902484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:27,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:27,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:27,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175009025] [2022-11-03 02:26:27,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:27,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:27,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:27,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:27,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:27,975 INFO L87 Difference]: Start difference. First operand 14305 states and 20252 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 02:26:30,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:34,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:36,172 WARN L539 Checker$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 02:26:37,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:37,101 INFO L93 Difference]: Finished difference Result 14315 states and 20261 transitions. [2022-11-03 02:26:37,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:26:37,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 193 [2022-11-03 02:26:37,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:37,191 INFO L225 Difference]: With dead ends: 14315 [2022-11-03 02:26:37,191 INFO L226 Difference]: Without dead ends: 14313 [2022-11-03 02:26:37,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:26:37,201 INFO L413 NwaCegarLoop]: 1797 mSDtfsCounter, 2029 mSDsluCounter, 4151 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 5372 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:37,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2036 Valid, 5372 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 881 Invalid, 2 Unknown, 0 Unchecked, 8.4s Time] [2022-11-03 02:26:37,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14313 states. [2022-11-03 02:26:38,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14313 to 14313. [2022-11-03 02:26:38,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14313 states, 8233 states have (on average 1.2618729503218753) internal successors, (10389), 8509 states have internal predecessors, (10389), 4934 states have call successors, (4934), 1171 states have call predecessors, (4934), 1143 states have return successors, (4935), 4784 states have call predecessors, (4935), 4926 states have call successors, (4935) [2022-11-03 02:26:38,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14313 states to 14313 states and 20258 transitions. [2022-11-03 02:26:38,207 INFO L78 Accepts]: Start accepts. Automaton has 14313 states and 20258 transitions. Word has length 193 [2022-11-03 02:26:38,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:38,209 INFO L495 AbstractCegarLoop]: Abstraction has 14313 states and 20258 transitions. [2022-11-03 02:26:38,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 02:26:38,209 INFO L276 IsEmpty]: Start isEmpty. Operand 14313 states and 20258 transitions. [2022-11-03 02:26:38,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-03 02:26:38,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:38,214 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:38,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:26:38,215 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 02:26:38,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:38,215 INFO L85 PathProgramCache]: Analyzing trace with hash 279551028, now seen corresponding path program 1 times [2022-11-03 02:26:38,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:38,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348165772] [2022-11-03 02:26:38,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:38,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:38,680 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2022-11-03 02:26:38,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:38,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348165772] [2022-11-03 02:26:38,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348165772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:38,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:38,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:38,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251058058] [2022-11-03 02:26:38,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:38,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:38,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:38,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:38,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:38,683 INFO L87 Difference]: Start difference. First operand 14313 states and 20258 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 02:26:41,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:44,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:45,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:46,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:46,675 INFO L93 Difference]: Finished difference Result 14323 states and 20267 transitions. [2022-11-03 02:26:46,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:26:46,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 198 [2022-11-03 02:26:46,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:46,750 INFO L225 Difference]: With dead ends: 14323 [2022-11-03 02:26:46,750 INFO L226 Difference]: Without dead ends: 14321 [2022-11-03 02:26:46,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:26:46,762 INFO L413 NwaCegarLoop]: 1797 mSDtfsCounter, 2029 mSDsluCounter, 4151 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 5372 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:46,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2035 Valid, 5372 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 882 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-11-03 02:26:46,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14321 states. [2022-11-03 02:26:47,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14321 to 14321. [2022-11-03 02:26:47,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14321 states, 8239 states have (on average 1.2616822429906542) internal successors, (10395), 8515 states have internal predecessors, (10395), 4934 states have call successors, (4934), 1173 states have call predecessors, (4934), 1145 states have return successors, (4935), 4784 states have call predecessors, (4935), 4926 states have call successors, (4935) [2022-11-03 02:26:47,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14321 states to 14321 states and 20264 transitions. [2022-11-03 02:26:47,837 INFO L78 Accepts]: Start accepts. Automaton has 14321 states and 20264 transitions. Word has length 198 [2022-11-03 02:26:47,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:47,838 INFO L495 AbstractCegarLoop]: Abstraction has 14321 states and 20264 transitions. [2022-11-03 02:26:47,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 02:26:47,838 INFO L276 IsEmpty]: Start isEmpty. Operand 14321 states and 20264 transitions. [2022-11-03 02:26:47,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-11-03 02:26:47,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:47,844 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:47,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:26:47,844 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 02:26:47,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:47,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1465012326, now seen corresponding path program 1 times [2022-11-03 02:26:47,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:47,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499808036] [2022-11-03 02:26:47,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:47,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:48,227 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 627 trivial. 0 not checked. [2022-11-03 02:26:48,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:48,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499808036] [2022-11-03 02:26:48,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499808036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:48,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:48,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:48,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927198486] [2022-11-03 02:26:48,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:48,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:48,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:48,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:48,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:48,230 INFO L87 Difference]: Start difference. First operand 14321 states and 20264 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:26:51,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:54,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:56,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:56,565 INFO L93 Difference]: Finished difference Result 21950 states and 31085 transitions. [2022-11-03 02:26:56,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:56,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 203 [2022-11-03 02:26:56,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:56,656 INFO L225 Difference]: With dead ends: 21950 [2022-11-03 02:26:56,656 INFO L226 Difference]: Without dead ends: 21948 [2022-11-03 02:26:56,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:26:56,666 INFO L413 NwaCegarLoop]: 2335 mSDtfsCounter, 1525 mSDsluCounter, 7389 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 8729 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:56,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 8729 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1377 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-11-03 02:26:56,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21948 states. [2022-11-03 02:26:58,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21948 to 21934. [2022-11-03 02:26:58,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21934 states, 12600 states have (on average 1.2641269841269842) internal successors, (15928), 13040 states have internal predecessors, (15928), 7568 states have call successors, (7568), 1852 states have call predecessors, (7568), 1763 states have return successors, (7574), 7254 states have call predecessors, (7574), 7556 states have call successors, (7574) [2022-11-03 02:26:58,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21934 states to 21934 states and 31070 transitions. [2022-11-03 02:26:58,280 INFO L78 Accepts]: Start accepts. Automaton has 21934 states and 31070 transitions. Word has length 203 [2022-11-03 02:26:58,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:58,280 INFO L495 AbstractCegarLoop]: Abstraction has 21934 states and 31070 transitions. [2022-11-03 02:26:58,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:26:58,280 INFO L276 IsEmpty]: Start isEmpty. Operand 21934 states and 31070 transitions. [2022-11-03 02:26:58,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-03 02:26:58,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:58,286 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 8, 7, 7, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:58,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:26:58,287 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 02:26:58,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:58,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1847518980, now seen corresponding path program 1 times [2022-11-03 02:26:58,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:58,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979732795] [2022-11-03 02:26:58,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:58,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:58,670 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2022-11-03 02:26:58,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:58,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979732795] [2022-11-03 02:26:58,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979732795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:58,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:58,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:58,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200761319] [2022-11-03 02:26:58,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:58,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:58,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:58,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:58,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:58,673 INFO L87 Difference]: Start difference. First operand 21934 states and 31070 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, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 02:27:02,061 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 02:27:05,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:07,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:07,198 INFO L93 Difference]: Finished difference Result 21946 states and 31078 transitions. [2022-11-03 02:27:07,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:27:07,199 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, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 211 [2022-11-03 02:27:07,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:07,306 INFO L225 Difference]: With dead ends: 21946 [2022-11-03 02:27:07,306 INFO L226 Difference]: Without dead ends: 21944 [2022-11-03 02:27:07,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:27:07,324 INFO L413 NwaCegarLoop]: 2167 mSDtfsCounter, 1427 mSDsluCounter, 6939 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 8247 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:07,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1431 Valid, 8247 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1166 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-03 02:27:07,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21944 states. [2022-11-03 02:27:08,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21944 to 21938. [2022-11-03 02:27:08,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21938 states, 12603 states have (on average 1.2640641117194318) internal successors, (15931), 13043 states have internal predecessors, (15931), 7568 states have call successors, (7568), 1853 states have call predecessors, (7568), 1764 states have return successors, (7574), 7254 states have call predecessors, (7574), 7556 states have call successors, (7574) [2022-11-03 02:27:08,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21938 states to 21938 states and 31073 transitions. [2022-11-03 02:27:08,814 INFO L78 Accepts]: Start accepts. Automaton has 21938 states and 31073 transitions. Word has length 211 [2022-11-03 02:27:08,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:08,815 INFO L495 AbstractCegarLoop]: Abstraction has 21938 states and 31073 transitions. [2022-11-03 02:27:08,815 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, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 02:27:08,815 INFO L276 IsEmpty]: Start isEmpty. Operand 21938 states and 31073 transitions. [2022-11-03 02:27:08,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-03 02:27:08,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:08,822 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 9, 8, 8, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:08,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:27:08,822 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 02:27:08,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:08,823 INFO L85 PathProgramCache]: Analyzing trace with hash -862205775, now seen corresponding path program 1 times [2022-11-03 02:27:08,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:08,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147611068] [2022-11-03 02:27:08,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:08,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:09,209 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2022-11-03 02:27:09,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:09,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147611068] [2022-11-03 02:27:09,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147611068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:09,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:09,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:27:09,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333137241] [2022-11-03 02:27:09,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:09,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:27:09,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:09,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:27:09,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:27:09,212 INFO L87 Difference]: Start difference. First operand 21938 states and 31073 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, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:27:11,696 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 02:27:15,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:18,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:18,490 INFO L93 Difference]: Finished difference Result 21950 states and 31081 transitions. [2022-11-03 02:27:18,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:27:18,491 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, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 217 [2022-11-03 02:27:18,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:18,557 INFO L225 Difference]: With dead ends: 21950 [2022-11-03 02:27:18,558 INFO L226 Difference]: Without dead ends: 21948 [2022-11-03 02:27:18,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:27:18,566 INFO L413 NwaCegarLoop]: 2167 mSDtfsCounter, 1427 mSDsluCounter, 6939 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 8247 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:18,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 8247 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1166 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2022-11-03 02:27:18,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21948 states. [2022-11-03 02:27:19,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21948 to 21942. [2022-11-03 02:27:19,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21942 states, 12606 states have (on average 1.2640012692368714) internal successors, (15934), 13046 states have internal predecessors, (15934), 7568 states have call successors, (7568), 1854 states have call predecessors, (7568), 1765 states have return successors, (7574), 7254 states have call predecessors, (7574), 7556 states have call successors, (7574) [2022-11-03 02:27:19,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21942 states to 21942 states and 31076 transitions. [2022-11-03 02:27:19,686 INFO L78 Accepts]: Start accepts. Automaton has 21942 states and 31076 transitions. Word has length 217 [2022-11-03 02:27:19,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:19,687 INFO L495 AbstractCegarLoop]: Abstraction has 21942 states and 31076 transitions. [2022-11-03 02:27:19,687 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, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:27:19,687 INFO L276 IsEmpty]: Start isEmpty. Operand 21942 states and 31076 transitions. [2022-11-03 02:27:19,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-03 02:27:19,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:19,692 INFO L195 NwaCegarLoop]: trace histogram [17, 11, 11, 11, 11, 11, 11, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:19,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:27:19,693 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 02:27:19,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:19,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1293383552, now seen corresponding path program 1 times [2022-11-03 02:27:19,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:19,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668892736] [2022-11-03 02:27:19,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:19,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:20,113 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2022-11-03 02:27:20,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:20,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668892736] [2022-11-03 02:27:20,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668892736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:20,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:20,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:27:20,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114146527] [2022-11-03 02:27:20,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:20,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:27:20,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:20,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:27:20,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:20,116 INFO L87 Difference]: Start difference. First operand 21942 states and 31076 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-03 02:27:25,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:27,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:28,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:28,997 INFO L93 Difference]: Finished difference Result 48731 states and 69055 transitions. [2022-11-03 02:27:28,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:27:28,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 214 [2022-11-03 02:27:28,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:29,095 INFO L225 Difference]: With dead ends: 48731 [2022-11-03 02:27:29,095 INFO L226 Difference]: Without dead ends: 27109 [2022-11-03 02:27:29,198 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 02:27:29,199 INFO L413 NwaCegarLoop]: 2709 mSDtfsCounter, 1142 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 4468 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:29,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 4468 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 797 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2022-11-03 02:27:29,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27109 states. [2022-11-03 02:27:30,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27109 to 26976. [2022-11-03 02:27:30,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26976 states, 15579 states have (on average 1.2639450542396817) internal successors, (19691), 16113 states have internal predecessors, (19691), 9212 states have call successors, (9212), 2293 states have call predecessors, (9212), 2182 states have return successors, (9218), 8820 states have call predecessors, (9218), 9200 states have call successors, (9218) [2022-11-03 02:27:30,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26976 states to 26976 states and 38121 transitions. [2022-11-03 02:27:30,680 INFO L78 Accepts]: Start accepts. Automaton has 26976 states and 38121 transitions. Word has length 214 [2022-11-03 02:27:30,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:30,680 INFO L495 AbstractCegarLoop]: Abstraction has 26976 states and 38121 transitions. [2022-11-03 02:27:30,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-03 02:27:30,681 INFO L276 IsEmpty]: Start isEmpty. Operand 26976 states and 38121 transitions. [2022-11-03 02:27:30,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-03 02:27:30,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:30,684 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 10, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:30,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 02:27:30,685 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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 02:27:30,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:30,685 INFO L85 PathProgramCache]: Analyzing trace with hash 992369204, now seen corresponding path program 1 times [2022-11-03 02:27:30,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:30,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347387347] [2022-11-03 02:27:30,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:30,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:31,266 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 711 trivial. 0 not checked. [2022-11-03 02:27:31,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:31,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347387347] [2022-11-03 02:27:31,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347387347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:31,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:31,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:27:31,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264473928] [2022-11-03 02:27:31,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:31,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:27:31,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:31,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:27:31,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:27:31,269 INFO L87 Difference]: Start difference. First operand 26976 states and 38121 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 02:27:33,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:36,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:39,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:41,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:41,393 INFO L93 Difference]: Finished difference Result 26988 states and 38129 transitions. [2022-11-03 02:27:41,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:27:41,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 218 [2022-11-03 02:27:41,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:41,508 INFO L225 Difference]: With dead ends: 26988 [2022-11-03 02:27:41,508 INFO L226 Difference]: Without dead ends: 26986 [2022-11-03 02:27:41,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:27:41,525 INFO L413 NwaCegarLoop]: 2167 mSDtfsCounter, 1428 mSDsluCounter, 6939 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 8247 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:41,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 8247 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1166 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2022-11-03 02:27:41,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26986 states. [2022-11-03 02:27:42,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26986 to 26980. [2022-11-03 02:27:42,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26980 states, 15582 states have (on average 1.263894236940059) internal successors, (19694), 16116 states have internal predecessors, (19694), 9212 states have call successors, (9212), 2294 states have call predecessors, (9212), 2183 states have return successors, (9218), 8820 states have call predecessors, (9218), 9200 states have call successors, (9218) [2022-11-03 02:27:42,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26980 states to 26980 states and 38124 transitions. [2022-11-03 02:27:42,952 INFO L78 Accepts]: Start accepts. Automaton has 26980 states and 38124 transitions. Word has length 218 [2022-11-03 02:27:42,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:42,952 INFO L495 AbstractCegarLoop]: Abstraction has 26980 states and 38124 transitions. [2022-11-03 02:27:42,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 02:27:42,953 INFO L276 IsEmpty]: Start isEmpty. Operand 26980 states and 38124 transitions. [2022-11-03 02:27:42,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-11-03 02:27:42,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:42,957 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 11, 10, 10, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:42,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 02:27:42,957 INFO L420 AbstractCegarLoop]: === Iteration 16 === 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 02:27:42,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:42,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1561690255, now seen corresponding path program 1 times [2022-11-03 02:27:42,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:42,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773687369] [2022-11-03 02:27:42,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:42,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:43,347 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2022-11-03 02:27:43,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:43,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773687369] [2022-11-03 02:27:43,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773687369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:43,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:43,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:27:43,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140402099] [2022-11-03 02:27:43,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:43,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:27:43,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:43,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:27:43,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:27:43,351 INFO L87 Difference]: Start difference. First operand 26980 states and 38124 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, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 02:27:47,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:50,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:53,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:53,426 INFO L93 Difference]: Finished difference Result 26992 states and 38132 transitions. [2022-11-03 02:27:53,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:27:53,427 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, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 227 [2022-11-03 02:27:53,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:53,553 INFO L225 Difference]: With dead ends: 26992 [2022-11-03 02:27:53,553 INFO L226 Difference]: Without dead ends: 26988 [2022-11-03 02:27:53,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:27:53,571 INFO L413 NwaCegarLoop]: 2167 mSDtfsCounter, 1427 mSDsluCounter, 6939 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 8247 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:53,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 8247 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1166 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2022-11-03 02:27:53,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26988 states. [2022-11-03 02:27:55,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26988 to 26982. [2022-11-03 02:27:55,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26982 states, 15584 states have (on average 1.263796201232033) internal successors, (19695), 16117 states have internal predecessors, (19695), 9212 states have call successors, (9212), 2295 states have call predecessors, (9212), 2183 states have return successors, (9218), 8820 states have call predecessors, (9218), 9200 states have call successors, (9218) [2022-11-03 02:27:55,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26982 states to 26982 states and 38125 transitions. [2022-11-03 02:27:55,327 INFO L78 Accepts]: Start accepts. Automaton has 26982 states and 38125 transitions. Word has length 227 [2022-11-03 02:27:55,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:55,328 INFO L495 AbstractCegarLoop]: Abstraction has 26982 states and 38125 transitions. [2022-11-03 02:27:55,328 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, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 02:27:55,328 INFO L276 IsEmpty]: Start isEmpty. Operand 26982 states and 38125 transitions. [2022-11-03 02:27:55,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-11-03 02:27:55,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:55,332 INFO L195 NwaCegarLoop]: trace histogram [15, 12, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:55,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 02:27:55,333 INFO L420 AbstractCegarLoop]: === Iteration 17 === 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 02:27:55,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:55,334 INFO L85 PathProgramCache]: Analyzing trace with hash -808516868, now seen corresponding path program 1 times [2022-11-03 02:27:55,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:55,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788734959] [2022-11-03 02:27:55,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:55,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:55,739 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 794 trivial. 0 not checked. [2022-11-03 02:27:55,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:55,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788734959] [2022-11-03 02:27:55,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788734959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:55,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:55,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:27:55,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937541381] [2022-11-03 02:27:55,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:55,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:27:55,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:55,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:27:55,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:27:55,745 INFO L87 Difference]: Start difference. First operand 26982 states and 38125 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, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-03 02:27:58,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:01,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:02,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:04,645 WARN L539 Checker$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 02:28:06,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:06,307 INFO L93 Difference]: Finished difference Result 29946 states and 41903 transitions. [2022-11-03 02:28:06,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:28:06,308 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, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 231 [2022-11-03 02:28:06,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:28:06,415 INFO L225 Difference]: With dead ends: 29946 [2022-11-03 02:28:06,416 INFO L226 Difference]: Without dead ends: 29813 [2022-11-03 02:28:06,429 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 02:28:06,430 INFO L413 NwaCegarLoop]: 1841 mSDtfsCounter, 2020 mSDsluCounter, 4452 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2022 SdHoareTripleChecker+Valid, 5676 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:28:06,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2022 Valid, 5676 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 920 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2022-11-03 02:28:06,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29813 states. [2022-11-03 02:28:08,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29813 to 29775. [2022-11-03 02:28:08,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29775 states, 17285 states have (on average 1.2624819207405265) internal successors, (21822), 17867 states have internal predecessors, (21822), 9903 states have call successors, (9903), 2688 states have call predecessors, (9903), 2584 states have return successors, (9913), 9524 states have call predecessors, (9913), 9895 states have call successors, (9913) [2022-11-03 02:28:08,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29775 states to 29775 states and 41638 transitions. [2022-11-03 02:28:08,746 INFO L78 Accepts]: Start accepts. Automaton has 29775 states and 41638 transitions. Word has length 231 [2022-11-03 02:28:08,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:28:08,747 INFO L495 AbstractCegarLoop]: Abstraction has 29775 states and 41638 transitions. [2022-11-03 02:28:08,747 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, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-03 02:28:08,747 INFO L276 IsEmpty]: Start isEmpty. Operand 29775 states and 41638 transitions. [2022-11-03 02:28:08,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-11-03 02:28:08,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:28:08,755 INFO L195 NwaCegarLoop]: trace histogram [19, 11, 11, 11, 11, 11, 11, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:28:08,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 02:28:08,755 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 02:28:08,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:28:08,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1071963027, now seen corresponding path program 1 times [2022-11-03 02:28:08,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:28:08,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523554551] [2022-11-03 02:28:08,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:08,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:28:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:09,576 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2022-11-03 02:28:09,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:28:09,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523554551] [2022-11-03 02:28:09,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523554551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:28:09,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:28:09,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:28:09,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135558083] [2022-11-03 02:28:09,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:28:09,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:28:09,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:28:09,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:28:09,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:28:09,578 INFO L87 Difference]: Start difference. First operand 29775 states and 41638 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:28:13,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:18,508 WARN L539 Checker$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 02:28:20,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:20,111 INFO L93 Difference]: Finished difference Result 30245 states and 42034 transitions. [2022-11-03 02:28:20,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:28:20,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 276 [2022-11-03 02:28:20,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:28:20,222 INFO L225 Difference]: With dead ends: 30245 [2022-11-03 02:28:20,223 INFO L226 Difference]: Without dead ends: 30243 [2022-11-03 02:28:20,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 02:28:20,239 INFO L413 NwaCegarLoop]: 1834 mSDtfsCounter, 1782 mSDsluCounter, 4571 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1783 SdHoareTripleChecker+Valid, 5754 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:28:20,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1783 Valid, 5754 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 957 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2022-11-03 02:28:20,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30243 states. [2022-11-03 02:28:21,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30243 to 30243. [2022-11-03 02:28:21,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30243 states, 17530 states have (on average 1.2576155162578437) internal successors, (22046), 18115 states have internal predecessors, (22046), 9973 states have call successors, (9973), 2842 states have call predecessors, (9973), 2738 states have return successors, (9983), 9594 states have call predecessors, (9983), 9965 states have call successors, (9983) [2022-11-03 02:28:21,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30243 states to 30243 states and 42002 transitions. [2022-11-03 02:28:21,932 INFO L78 Accepts]: Start accepts. Automaton has 30243 states and 42002 transitions. Word has length 276 [2022-11-03 02:28:21,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:28:21,932 INFO L495 AbstractCegarLoop]: Abstraction has 30243 states and 42002 transitions. [2022-11-03 02:28:21,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:28:21,932 INFO L276 IsEmpty]: Start isEmpty. Operand 30243 states and 42002 transitions. [2022-11-03 02:28:21,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-11-03 02:28:21,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:28:21,942 INFO L195 NwaCegarLoop]: trace histogram [19, 11, 11, 11, 11, 11, 11, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:28:21,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 02:28:21,943 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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 02:28:21,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:28:21,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1544165013, now seen corresponding path program 1 times [2022-11-03 02:28:21,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:28:21,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382406302] [2022-11-03 02:28:21,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:21,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:28:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:22,659 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 829 trivial. 0 not checked. [2022-11-03 02:28:22,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:28:22,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382406302] [2022-11-03 02:28:22,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382406302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:28:22,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:28:22,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:28:22,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968999992] [2022-11-03 02:28:22,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:28:22,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:28:22,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:28:22,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:28:22,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:28:22,663 INFO L87 Difference]: Start difference. First operand 30243 states and 42002 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-03 02:28:25,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:26,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:31,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:32,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:34,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:36,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:36,514 INFO L93 Difference]: Finished difference Result 30243 states and 42002 transitions. [2022-11-03 02:28:36,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:28:36,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 297 [2022-11-03 02:28:36,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:28:36,622 INFO L225 Difference]: With dead ends: 30243 [2022-11-03 02:28:36,622 INFO L226 Difference]: Without dead ends: 30241 [2022-11-03 02:28:36,639 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 02:28:36,640 INFO L413 NwaCegarLoop]: 1836 mSDtfsCounter, 297 mSDsluCounter, 6138 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 7113 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:28:36,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 7113 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1166 Invalid, 2 Unknown, 0 Unchecked, 12.4s Time] [2022-11-03 02:28:36,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30241 states. [2022-11-03 02:28:38,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30241 to 30241. [2022-11-03 02:28:38,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30241 states, 17529 states have (on average 1.255576473272862) internal successors, (22009), 18113 states have internal predecessors, (22009), 9973 states have call successors, (9973), 2842 states have call predecessors, (9973), 2738 states have return successors, (9983), 9594 states have call predecessors, (9983), 9965 states have call successors, (9983) [2022-11-03 02:28:38,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30241 states to 30241 states and 41965 transitions. [2022-11-03 02:28:38,354 INFO L78 Accepts]: Start accepts. Automaton has 30241 states and 41965 transitions. Word has length 297 [2022-11-03 02:28:38,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:28:38,355 INFO L495 AbstractCegarLoop]: Abstraction has 30241 states and 41965 transitions. [2022-11-03 02:28:38,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-03 02:28:38,355 INFO L276 IsEmpty]: Start isEmpty. Operand 30241 states and 41965 transitions. [2022-11-03 02:28:38,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-11-03 02:28:38,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:28:38,386 INFO L195 NwaCegarLoop]: trace histogram [24, 14, 14, 14, 14, 14, 14, 14, 14, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:28:38,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 02:28:38,386 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 02:28:38,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:28:38,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1797310320, now seen corresponding path program 1 times [2022-11-03 02:28:38,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:28:38,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900009168] [2022-11-03 02:28:38,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:38,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:28:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:39,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1450 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1434 trivial. 0 not checked. [2022-11-03 02:28:39,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:28:39,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900009168] [2022-11-03 02:28:39,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900009168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:28:39,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:28:39,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:28:39,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662115673] [2022-11-03 02:28:39,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:28:39,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:28:39,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:28:39,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:28:39,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:28:39,142 INFO L87 Difference]: Start difference. First operand 30241 states and 41965 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-03 02:28:43,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:45,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:48,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:49,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:49,151 INFO L93 Difference]: Finished difference Result 62550 states and 88635 transitions. [2022-11-03 02:28:49,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:28:49,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 432 [2022-11-03 02:28:49,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:28:49,362 INFO L225 Difference]: With dead ends: 62550 [2022-11-03 02:28:49,363 INFO L226 Difference]: Without dead ends: 38199 [2022-11-03 02:28:49,470 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 02:28:49,473 INFO L413 NwaCegarLoop]: 2523 mSDtfsCounter, 480 mSDsluCounter, 2273 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 4509 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:28:49,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 4509 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 704 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-03 02:28:49,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38199 states. [2022-11-03 02:28:51,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38199 to 30245. [2022-11-03 02:28:51,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30245 states, 17533 states have (on average 1.255518165744596) internal successors, (22013), 18117 states have internal predecessors, (22013), 9973 states have call successors, (9973), 2842 states have call predecessors, (9973), 2738 states have return successors, (9983), 9594 states have call predecessors, (9983), 9965 states have call successors, (9983) [2022-11-03 02:28:51,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30245 states to 30245 states and 41969 transitions. [2022-11-03 02:28:51,646 INFO L78 Accepts]: Start accepts. Automaton has 30245 states and 41969 transitions. Word has length 432 [2022-11-03 02:28:51,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:28:51,646 INFO L495 AbstractCegarLoop]: Abstraction has 30245 states and 41969 transitions. [2022-11-03 02:28:51,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-03 02:28:51,647 INFO L276 IsEmpty]: Start isEmpty. Operand 30245 states and 41969 transitions. [2022-11-03 02:28:51,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-11-03 02:28:51,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:28:51,677 INFO L195 NwaCegarLoop]: trace histogram [25, 15, 15, 15, 15, 15, 15, 14, 14, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:28:51,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 02:28:51,677 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 02:28:51,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:28:51,678 INFO L85 PathProgramCache]: Analyzing trace with hash -732742470, now seen corresponding path program 1 times [2022-11-03 02:28:51,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:28:51,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954390344] [2022-11-03 02:28:51,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:51,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:28:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:52,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2022-11-03 02:28:52,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:28:52,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954390344] [2022-11-03 02:28:52,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954390344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:28:52,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:28:52,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:28:52,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720660640] [2022-11-03 02:28:52,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:28:52,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:28:52,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:28:52,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:28:52,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:28:52,095 INFO L87 Difference]: Start difference. First operand 30245 states and 41969 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-03 02:28:56,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:00,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:00,041 INFO L93 Difference]: Finished difference Result 62358 states and 88319 transitions. [2022-11-03 02:29:00,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:29:00,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 438 [2022-11-03 02:29:00,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:00,288 INFO L225 Difference]: With dead ends: 62358 [2022-11-03 02:29:00,288 INFO L226 Difference]: Without dead ends: 38003 [2022-11-03 02:29:00,389 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 02:29:00,390 INFO L413 NwaCegarLoop]: 2346 mSDtfsCounter, 445 mSDsluCounter, 2199 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 4260 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:00,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 4260 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 671 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-03 02:29:00,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38003 states. [2022-11-03 02:29:02,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38003 to 30249. [2022-11-03 02:29:02,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30249 states, 17537 states have (on average 1.2554598848149627) internal successors, (22017), 18121 states have internal predecessors, (22017), 9973 states have call successors, (9973), 2842 states have call predecessors, (9973), 2738 states have return successors, (9983), 9594 states have call predecessors, (9983), 9965 states have call successors, (9983) [2022-11-03 02:29:03,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30249 states to 30249 states and 41973 transitions. [2022-11-03 02:29:03,076 INFO L78 Accepts]: Start accepts. Automaton has 30249 states and 41973 transitions. Word has length 438 [2022-11-03 02:29:03,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:03,077 INFO L495 AbstractCegarLoop]: Abstraction has 30249 states and 41973 transitions. [2022-11-03 02:29:03,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-03 02:29:03,077 INFO L276 IsEmpty]: Start isEmpty. Operand 30249 states and 41973 transitions. [2022-11-03 02:29:03,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-11-03 02:29:03,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:03,104 INFO L195 NwaCegarLoop]: trace histogram [24, 14, 14, 14, 14, 14, 14, 14, 14, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:29:03,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-03 02:29:03,105 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 02:29:03,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:03,105 INFO L85 PathProgramCache]: Analyzing trace with hash -551285632, now seen corresponding path program 1 times [2022-11-03 02:29:03,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:03,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864762545] [2022-11-03 02:29:03,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:03,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:03,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 1436 trivial. 0 not checked. [2022-11-03 02:29:03,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:03,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864762545] [2022-11-03 02:29:03,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864762545] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:29:03,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272404697] [2022-11-03 02:29:03,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:03,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:29:03,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24989b40-969f-430f-a198-d2cac6876d72/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:29:03,653 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24989b40-969f-430f-a198-d2cac6876d72/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:29:03,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24989b40-969f-430f-a198-d2cac6876d72/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:29:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:05,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 4045 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:29:05,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 359 proven. 0 refuted. 0 times theorem prover too weak. 1094 trivial. 0 not checked. [2022-11-03 02:29:05,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:29:05,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272404697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:05,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:29:05,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-03 02:29:05,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177147854] [2022-11-03 02:29:05,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:05,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:29:05,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:05,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:29:05,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:05,161 INFO L87 Difference]: Start difference. First operand 30249 states and 41973 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-03 02:29:06,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:13,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:13,144 INFO L93 Difference]: Finished difference Result 62454 states and 88467 transitions. [2022-11-03 02:29:13,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:29:13,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 438 [2022-11-03 02:29:13,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:13,312 INFO L225 Difference]: With dead ends: 62454 [2022-11-03 02:29:13,312 INFO L226 Difference]: Without dead ends: 38095 [2022-11-03 02:29:13,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:13,389 INFO L413 NwaCegarLoop]: 2500 mSDtfsCounter, 452 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 4477 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:13,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 4477 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-03 02:29:13,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38095 states. [2022-11-03 02:29:15,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38095 to 30253. [2022-11-03 02:29:15,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30253 states, 17541 states have (on average 1.255401630465766) internal successors, (22021), 18125 states have internal predecessors, (22021), 9973 states have call successors, (9973), 2842 states have call predecessors, (9973), 2738 states have return successors, (9983), 9594 states have call predecessors, (9983), 9965 states have call successors, (9983) [2022-11-03 02:29:15,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30253 states to 30253 states and 41977 transitions. [2022-11-03 02:29:15,800 INFO L78 Accepts]: Start accepts. Automaton has 30253 states and 41977 transitions. Word has length 438 [2022-11-03 02:29:15,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:15,801 INFO L495 AbstractCegarLoop]: Abstraction has 30253 states and 41977 transitions. [2022-11-03 02:29:15,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-03 02:29:15,801 INFO L276 IsEmpty]: Start isEmpty. Operand 30253 states and 41977 transitions. [2022-11-03 02:29:15,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2022-11-03 02:29:15,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:15,825 INFO L195 NwaCegarLoop]: trace histogram [24, 14, 14, 14, 14, 14, 14, 14, 14, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:29:15,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24989b40-969f-430f-a198-d2cac6876d72/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:16,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24989b40-969f-430f-a198-d2cac6876d72/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-03 02:29:16,053 INFO L420 AbstractCegarLoop]: === Iteration 23 === 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 02:29:16,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:16,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1630372500, now seen corresponding path program 1 times [2022-11-03 02:29:16,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:16,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613861665] [2022-11-03 02:29:16,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:16,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:16,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 1437 trivial. 0 not checked. [2022-11-03 02:29:16,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:16,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613861665] [2022-11-03 02:29:16,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613861665] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:29:16,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879883520] [2022-11-03 02:29:16,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:16,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:29:16,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24989b40-969f-430f-a198-d2cac6876d72/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:29:16,669 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24989b40-969f-430f-a198-d2cac6876d72/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:29:16,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24989b40-969f-430f-a198-d2cac6876d72/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:29:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:18,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 4057 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:29:18,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:18,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 360 proven. 0 refuted. 0 times theorem prover too weak. 1094 trivial. 0 not checked. [2022-11-03 02:29:18,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:29:18,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879883520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:18,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:29:18,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-03 02:29:18,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887459292] [2022-11-03 02:29:18,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:18,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:29:18,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:18,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:29:18,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:18,159 INFO L87 Difference]: Start difference. First operand 30253 states and 41977 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-03 02:29:23,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:28,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:29,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:29,285 INFO L93 Difference]: Finished difference Result 62542 states and 88599 transitions. [2022-11-03 02:29:29,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:29:29,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 442 [2022-11-03 02:29:29,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:29,514 INFO L225 Difference]: With dead ends: 62542 [2022-11-03 02:29:29,514 INFO L226 Difference]: Without dead ends: 38179 [2022-11-03 02:29:29,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:29,585 INFO L413 NwaCegarLoop]: 2509 mSDtfsCounter, 469 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 4490 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:29,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 4490 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 704 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-03 02:29:29,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38179 states.