./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d62ae3-e834-4f4b-8255-96643f68dcdb/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d62ae3-e834-4f4b-8255-96643f68dcdb/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_f7d62ae3-e834-4f4b-8255-96643f68dcdb/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d62ae3-e834-4f4b-8255-96643f68dcdb/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d62ae3-e834-4f4b-8255-96643f68dcdb/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_f7d62ae3-e834-4f4b-8255-96643f68dcdb/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 435b3fa8073a80dcd9b8b69819909b6031007c35574ec244127e6237bed3be57 --- 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 01:48:36,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:48:36,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:48:36,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:48:36,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:48:36,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:48:36,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:48:36,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:48:36,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:48:36,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:48:36,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:48:36,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:48:36,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:48:36,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:48:36,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:48:36,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:48:36,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:48:36,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:48:36,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:48:36,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:48:36,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:48:36,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:48:36,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:48:36,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:48:36,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:48:36,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:48:36,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:48:36,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:48:36,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:48:36,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:48:36,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:48:36,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:48:36,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:48:36,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:48:36,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:48:36,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:48:36,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:48:36,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:48:36,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:48:36,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:48:36,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:48:36,898 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d62ae3-e834-4f4b-8255-96643f68dcdb/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:48:36,937 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:48:36,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:48:36,938 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:48:36,938 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:48:36,939 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:48:36,939 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:48:36,940 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:48:36,940 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:48:36,940 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:48:36,940 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:48:36,941 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:48:36,941 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:48:36,942 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:48:36,942 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:48:36,942 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:48:36,942 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:48:36,943 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:48:36,943 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:48:36,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:48:36,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:48:36,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:48:36,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:48:36,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:48:36,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:48:36,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:48:36,946 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:48:36,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:48:36,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:48:36,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:48:36,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:48:36,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:48:36,948 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:48:36,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:48:36,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:48:36,948 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:48:36,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:48:36,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:48:36,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:48:36,950 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_f7d62ae3-e834-4f4b-8255-96643f68dcdb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d62ae3-e834-4f4b-8255-96643f68dcdb/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 435b3fa8073a80dcd9b8b69819909b6031007c35574ec244127e6237bed3be57 [2022-11-03 01:48:37,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:48:37,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:48:37,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:48:37,226 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:48:37,227 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:48:37,228 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d62ae3-e834-4f4b-8255-96643f68dcdb/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2022-11-03 01:48:37,319 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d62ae3-e834-4f4b-8255-96643f68dcdb/bin/utaipan-7li7fVZpFI/data/0b7c7199c/30bb5791aeab4b79a7c2af2a7f19cc49/FLAG6bb14af1f [2022-11-03 01:48:38,416 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:48:38,418 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d62ae3-e834-4f4b-8255-96643f68dcdb/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2022-11-03 01:48:38,494 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d62ae3-e834-4f4b-8255-96643f68dcdb/bin/utaipan-7li7fVZpFI/data/0b7c7199c/30bb5791aeab4b79a7c2af2a7f19cc49/FLAG6bb14af1f [2022-11-03 01:48:38,699 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d62ae3-e834-4f4b-8255-96643f68dcdb/bin/utaipan-7li7fVZpFI/data/0b7c7199c/30bb5791aeab4b79a7c2af2a7f19cc49 [2022-11-03 01:48:38,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:48:38,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:48:38,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:48:38,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:48:38,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:48:38,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15b0fa3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:38, skipping insertion in model container [2022-11-03 01:48:38,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:48:38" (1/1) ... [2022-11-03 01:48:38,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:48:38,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:48:43,463 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_f7d62ae3-e834-4f4b-8255-96643f68dcdb/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491234,491247] [2022-11-03 01:48:43,466 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_f7d62ae3-e834-4f4b-8255-96643f68dcdb/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491403,491416] [2022-11-03 01:48:43,466 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_f7d62ae3-e834-4f4b-8255-96643f68dcdb/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491570,491583] [2022-11-03 01:48:43,467 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_f7d62ae3-e834-4f4b-8255-96643f68dcdb/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491738,491751] [2022-11-03 01:48:43,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:48:43,575 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:48:44,077 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_f7d62ae3-e834-4f4b-8255-96643f68dcdb/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491234,491247] [2022-11-03 01:48:44,078 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_f7d62ae3-e834-4f4b-8255-96643f68dcdb/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491403,491416] [2022-11-03 01:48:44,079 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_f7d62ae3-e834-4f4b-8255-96643f68dcdb/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491570,491583] [2022-11-03 01:48:44,079 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_f7d62ae3-e834-4f4b-8255-96643f68dcdb/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491738,491751] [2022-11-03 01:48:44,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:48:44,378 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:48:44,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:44 WrapperNode [2022-11-03 01:48:44,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:48:44,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:48:44,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:48:44,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:48:44,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:44" (1/1) ... [2022-11-03 01:48:44,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:44" (1/1) ... [2022-11-03 01:48:44,919 INFO L138 Inliner]: procedures = 567, calls = 5326, calls flagged for inlining = 289, calls inlined = 261, statements flattened = 11363 [2022-11-03 01:48:44,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:48:44,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:48:44,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:48:44,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:48:44,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:44" (1/1) ... [2022-11-03 01:48:44,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:44" (1/1) ... [2022-11-03 01:48:44,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:44" (1/1) ... [2022-11-03 01:48:44,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:44" (1/1) ... [2022-11-03 01:48:45,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:44" (1/1) ... [2022-11-03 01:48:45,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:44" (1/1) ... [2022-11-03 01:48:45,367 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:44" (1/1) ... [2022-11-03 01:48:45,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:44" (1/1) ... [2022-11-03 01:48:45,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:48:45,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:48:45,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:48:45,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:48:45,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:44" (1/1) ... [2022-11-03 01:48:45,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:48:45,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d62ae3-e834-4f4b-8255-96643f68dcdb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:48:45,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d62ae3-e834-4f4b-8255-96643f68dcdb/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:48:45,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d62ae3-e834-4f4b-8255-96643f68dcdb/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:48:45,549 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_up [2022-11-03 01:48:45,549 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_up [2022-11-03 01:48:45,550 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_media_task [2022-11-03 01:48:45,550 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_media_task [2022-11-03 01:48:45,550 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 01:48:45,550 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 01:48:45,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 01:48:45,550 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 01:48:45,551 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-03 01:48:45,551 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-03 01:48:45,551 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 01:48:45,551 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 01:48:45,551 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_select_media [2022-11-03 01:48:45,551 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_select_media [2022-11-03 01:48:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit_le [2022-11-03 01:48:45,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit_le [2022-11-03 01:48:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:48:45,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:48:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 01:48:45,552 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 01:48:45,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 01:48:45,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 01:48:45,553 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 01:48:45,553 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 01:48:45,553 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-03 01:48:45,553 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-03 01:48:45,554 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 01:48:45,554 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 01:48:45,554 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-03 01:48:45,554 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-03 01:48:45,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2022-11-03 01:48:45,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2022-11-03 01:48:45,555 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-03 01:48:45,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-03 01:48:45,555 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 01:48:45,555 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 01:48:45,555 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-11-03 01:48:45,555 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-11-03 01:48:45,555 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 01:48:45,556 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 01:48:45,556 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 01:48:45,556 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 01:48:45,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 01:48:45,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 01:48:45,556 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_do_nway [2022-11-03 01:48:45,557 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_do_nway [2022-11-03 01:48:45,557 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 01:48:45,557 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 01:48:45,557 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-03 01:48:45,557 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-03 01:48:45,557 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 01:48:45,558 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 01:48:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 01:48:45,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 01:48:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 01:48:45,558 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 01:48:45,559 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 01:48:45,559 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 01:48:45,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:48:45,559 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_wolopts [2022-11-03 01:48:45,559 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_wolopts [2022-11-03 01:48:45,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_61 [2022-11-03 01:48:45,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_61 [2022-11-03 01:48:45,560 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_resume [2022-11-03 01:48:45,560 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_resume [2022-11-03 01:48:45,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2022-11-03 01:48:45,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2022-11-03 01:48:45,560 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_interrupt [2022-11-03 01:48:45,560 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_interrupt [2022-11-03 01:48:45,561 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 01:48:45,561 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 01:48:45,561 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___3 [2022-11-03 01:48:45,561 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___3 [2022-11-03 01:48:45,561 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___1 [2022-11-03 01:48:45,561 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___1 [2022-11-03 01:48:45,561 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_media_task [2022-11-03 01:48:45,562 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_media_task [2022-11-03 01:48:45,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 01:48:45,562 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___5 [2022-11-03 01:48:45,562 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___5 [2022-11-03 01:48:45,562 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___4 [2022-11-03 01:48:45,562 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___4 [2022-11-03 01:48:45,563 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 01:48:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 01:48:45,563 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 01:48:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 01:48:45,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:48:45,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 01:48:45,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 01:48:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:48:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-03 01:48:45,564 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-03 01:48:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 01:48:45,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 01:48:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 01:48:45,565 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 01:48:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 01:48:45,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 01:48:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 01:48:45,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 01:48:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 01:48:45,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 01:48:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_timer [2022-11-03 01:48:45,566 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_timer [2022-11-03 01:48:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 01:48:45,566 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 01:48:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 01:48:45,567 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 01:48:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure poll_tulip [2022-11-03 01:48:45,567 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_tulip [2022-11-03 01:48:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_write [2022-11-03 01:48:45,567 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_write [2022-11-03 01:48:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 01:48:45,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 01:48:45,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:48:45,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 01:48:45,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 01:48:45,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 01:48:45,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 01:48:45,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-03 01:48:45,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-03 01:48:45,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-03 01:48:45,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-03 01:48:45,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:48:45,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 01:48:45,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 01:48:45,570 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 01:48:45,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 01:48:45,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:48:45,570 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_start_nway [2022-11-03 01:48:45,571 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_start_nway [2022-11-03 01:48:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-11-03 01:48:45,571 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-11-03 01:48:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-03 01:48:45,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-03 01:48:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:48:45,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:48:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_tulip_private [2022-11-03 01:48:45,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_tulip_private [2022-11-03 01:48:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 01:48:45,572 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 01:48:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-03 01:48:45,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-03 01:48:45,573 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 01:48:45,573 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 01:48:45,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 01:48:45,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 01:48:45,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mii_lock_of_tulip_private [2022-11-03 01:48:45,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mii_lock_of_tulip_private [2022-11-03 01:48:45,573 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 01:48:45,574 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 01:48:45,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_tulip_private [2022-11-03 01:48:45,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_tulip_private [2022-11-03 01:48:45,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:48:45,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:48:45,574 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_close [2022-11-03 01:48:45,574 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_close [2022-11-03 01:48:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 01:48:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:48:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 01:48:45,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 01:48:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2022-11-03 01:48:45,575 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2022-11-03 01:48:45,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 01:48:45,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 01:48:45,576 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-03 01:48:45,576 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-03 01:48:45,576 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_power_state [2022-11-03 01:48:45,576 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_power_state [2022-11-03 01:48:45,576 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 01:48:45,577 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 01:48:45,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2022-11-03 01:48:45,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2022-11-03 01:48:45,577 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2022-11-03 01:48:45,577 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2022-11-03 01:48:45,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 01:48:45,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 01:48:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_tx_timeout [2022-11-03 01:48:45,578 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_tx_timeout [2022-11-03 01:48:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_check_duplex [2022-11-03 01:48:45,578 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_check_duplex [2022-11-03 01:48:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 01:48:45,578 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 01:48:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure bitrev32 [2022-11-03 01:48:45,579 INFO L138 BoogieDeclarations]: Found implementation of procedure bitrev32 [2022-11-03 01:48:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2022-11-03 01:48:45,579 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2022-11-03 01:48:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 01:48:45,579 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 01:48:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 01:48:45,580 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 01:48:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure comet_timer [2022-11-03 01:48:45,580 INFO L138 BoogieDeclarations]: Found implementation of procedure comet_timer [2022-11-03 01:48:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2022-11-03 01:48:45,580 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2022-11-03 01:48:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 01:48:45,580 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 01:48:45,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:48:45,581 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_read [2022-11-03 01:48:45,581 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_read [2022-11-03 01:48:45,581 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 01:48:45,581 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 01:48:45,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:48:45,581 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-03 01:48:45,582 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-03 01:48:45,582 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-11-03 01:48:45,582 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-11-03 01:48:45,582 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2022-11-03 01:48:45,582 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2022-11-03 01:48:45,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:48:45,582 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_down [2022-11-03 01:48:45,583 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_down [2022-11-03 01:48:45,583 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_stop_rxtx___2 [2022-11-03 01:48:45,583 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_stop_rxtx___2 [2022-11-03 01:48:45,583 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_remove_one [2022-11-03 01:48:45,583 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_remove_one [2022-11-03 01:48:45,583 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 01:48:45,583 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 01:48:45,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-03 01:48:45,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-03 01:48:45,584 INFO L130 BoogieDeclarations]: Found specification of procedure mxic_timer [2022-11-03 01:48:45,584 INFO L138 BoogieDeclarations]: Found implementation of procedure mxic_timer [2022-11-03 01:48:45,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 01:48:45,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 01:48:45,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-03 01:48:45,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-03 01:48:45,585 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_free_ring [2022-11-03 01:48:45,663 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_free_ring [2022-11-03 01:48:45,663 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-03 01:48:45,664 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-03 01:48:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_refill_rx [2022-11-03 01:48:45,664 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_refill_rx [2022-11-03 01:48:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_timer [2022-11-03 01:48:45,664 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_timer [2022-11-03 01:48:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 01:48:45,664 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 01:48:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 01:48:45,664 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 01:48:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-03 01:48:45,664 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-03 01:48:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_62 [2022-11-03 01:48:45,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_62 [2022-11-03 01:48:45,665 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 01:48:45,665 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 01:48:45,665 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 01:48:45,665 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 01:48:45,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:48:45,665 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx [2022-11-03 01:48:45,665 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx [2022-11-03 01:48:45,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 01:48:45,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 01:48:45,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61___0 [2022-11-03 01:48:45,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61___0 [2022-11-03 01:48:45,666 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2022-11-03 01:48:45,666 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2022-11-03 01:48:45,666 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_start_rxtx [2022-11-03 01:48:45,666 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_start_rxtx [2022-11-03 01:48:45,666 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 01:48:45,666 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 01:48:45,666 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_open [2022-11-03 01:48:45,666 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_open [2022-11-03 01:48:45,666 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-03 01:48:45,666 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-03 01:48:45,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 01:48:45,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 01:48:45,667 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-03 01:48:45,667 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-03 01:48:45,667 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-03 01:48:45,667 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-03 01:48:45,667 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-03 01:48:45,667 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-03 01:48:45,667 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_start_nway [2022-11-03 01:48:45,667 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_start_nway [2022-11-03 01:48:45,667 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-03 01:48:45,667 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-03 01:48:45,667 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_read_eeprom [2022-11-03 01:48:45,668 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_read_eeprom [2022-11-03 01:48:45,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:48:45,668 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_timer [2022-11-03 01:48:45,668 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_timer [2022-11-03 01:48:45,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 01:48:45,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 01:48:46,837 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:48:46,840 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:48:48,011 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 01:48:57,152 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 01:48:57,361 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:49:01,469 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:49:01,470 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 01:49:01,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:49:01 BoogieIcfgContainer [2022-11-03 01:49:01,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:49:01,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:49:01,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:49:01,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:49:01,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:48:38" (1/3) ... [2022-11-03 01:49:01,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e885c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:49:01, skipping insertion in model container [2022-11-03 01:49:01,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:44" (2/3) ... [2022-11-03 01:49:01,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e885c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:49:01, skipping insertion in model container [2022-11-03 01:49:01,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:49:01" (3/3) ... [2022-11-03 01:49:01,487 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2022-11-03 01:49:01,509 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:49:01,509 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 01:49:01,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:49:01,645 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;@71794f82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:49:01,645 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 01:49:01,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 2632 states, 1547 states have (on average 1.3529411764705883) internal successors, (2093), 1648 states have internal predecessors, (2093), 951 states have call successors, (951), 133 states have call predecessors, (951), 132 states have return successors, (944), 899 states have call predecessors, (944), 944 states have call successors, (944) [2022-11-03 01:49:01,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-03 01:49:01,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:01,692 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:01,692 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 01:49:01,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:01,706 INFO L85 PathProgramCache]: Analyzing trace with hash 425106636, now seen corresponding path program 1 times [2022-11-03 01:49:01,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:49:01,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432664] [2022-11-03 01:49:01,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:01,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:49:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:02,809 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-03 01:49:02,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:49:02,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432664] [2022-11-03 01:49:02,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:02,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:49:02,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:49:02,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339678327] [2022-11-03 01:49:02,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:02,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:49:02,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:49:02,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:49:02,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:49:02,862 INFO L87 Difference]: Start difference. First operand has 2632 states, 1547 states have (on average 1.3529411764705883) internal successors, (2093), 1648 states have internal predecessors, (2093), 951 states have call successors, (951), 133 states have call predecessors, (951), 132 states have return successors, (944), 899 states have call predecessors, (944), 944 states have call successors, (944) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 01:49:08,471 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 01:49:09,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:09,440 INFO L93 Difference]: Finished difference Result 7601 states and 11697 transitions. [2022-11-03 01:49:09,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:49:09,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 151 [2022-11-03 01:49:09,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:09,505 INFO L225 Difference]: With dead ends: 7601 [2022-11-03 01:49:09,505 INFO L226 Difference]: Without dead ends: 4985 [2022-11-03 01:49:09,534 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 01:49:09,540 INFO L413 NwaCegarLoop]: 4397 mSDtfsCounter, 3591 mSDsluCounter, 3928 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3591 SdHoareTripleChecker+Valid, 7903 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:09,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3591 Valid, 7903 Invalid, 893 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 885 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-11-03 01:49:09,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4985 states. [2022-11-03 01:49:10,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4985 to 4970. [2022-11-03 01:49:10,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4970 states, 2925 states have (on average 1.3442735042735043) internal successors, (3932), 3114 states have internal predecessors, (3932), 1785 states have call successors, (1785), 258 states have call predecessors, (1785), 257 states have return successors, (1781), 1696 states have call predecessors, (1781), 1781 states have call successors, (1781) [2022-11-03 01:49:10,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4970 states to 4970 states and 7498 transitions. [2022-11-03 01:49:10,240 INFO L78 Accepts]: Start accepts. Automaton has 4970 states and 7498 transitions. Word has length 151 [2022-11-03 01:49:10,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:10,243 INFO L495 AbstractCegarLoop]: Abstraction has 4970 states and 7498 transitions. [2022-11-03 01:49:10,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 01:49:10,243 INFO L276 IsEmpty]: Start isEmpty. Operand 4970 states and 7498 transitions. [2022-11-03 01:49:10,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-03 01:49:10,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:10,256 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:10,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:49:10,259 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 01:49:10,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:10,259 INFO L85 PathProgramCache]: Analyzing trace with hash 311107550, now seen corresponding path program 1 times [2022-11-03 01:49:10,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:49:10,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339729867] [2022-11-03 01:49:10,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:10,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:49:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:11,054 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-03 01:49:11,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:49:11,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339729867] [2022-11-03 01:49:11,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339729867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:11,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:49:11,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:49:11,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602756818] [2022-11-03 01:49:11,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:11,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:49:11,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:49:11,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:49:11,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:49:11,068 INFO L87 Difference]: Start difference. First operand 4970 states and 7498 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 01:49:17,537 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 01:49:18,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:18,141 INFO L93 Difference]: Finished difference Result 11024 states and 16652 transitions. [2022-11-03 01:49:18,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:49:18,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 159 [2022-11-03 01:49:18,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:18,196 INFO L225 Difference]: With dead ends: 11024 [2022-11-03 01:49:18,196 INFO L226 Difference]: Without dead ends: 6081 [2022-11-03 01:49:18,225 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 01:49:18,227 INFO L413 NwaCegarLoop]: 4133 mSDtfsCounter, 2643 mSDsluCounter, 3900 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2643 SdHoareTripleChecker+Valid, 7615 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:18,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2643 Valid, 7615 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 914 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-03 01:49:18,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6081 states. [2022-11-03 01:49:18,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6081 to 6055. [2022-11-03 01:49:18,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6055 states, 3615 states have (on average 1.3502074688796681) internal successors, (4881), 3833 states have internal predecessors, (4881), 2126 states have call successors, (2126), 313 states have call predecessors, (2126), 311 states have return successors, (2122), 2022 states have call predecessors, (2122), 2122 states have call successors, (2122) [2022-11-03 01:49:18,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6055 states to 6055 states and 9129 transitions. [2022-11-03 01:49:18,904 INFO L78 Accepts]: Start accepts. Automaton has 6055 states and 9129 transitions. Word has length 159 [2022-11-03 01:49:18,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:18,906 INFO L495 AbstractCegarLoop]: Abstraction has 6055 states and 9129 transitions. [2022-11-03 01:49:18,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 01:49:18,907 INFO L276 IsEmpty]: Start isEmpty. Operand 6055 states and 9129 transitions. [2022-11-03 01:49:18,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-03 01:49:18,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:18,914 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:18,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:49:18,914 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 01:49:18,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:18,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1999472241, now seen corresponding path program 1 times [2022-11-03 01:49:18,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:49:18,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859332577] [2022-11-03 01:49:18,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:18,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:49:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-03 01:49:19,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:49:19,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859332577] [2022-11-03 01:49:19,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859332577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:19,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:49:19,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:49:19,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676196661] [2022-11-03 01:49:19,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:19,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:49:19,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:49:19,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:49:19,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:49:19,402 INFO L87 Difference]: Start difference. First operand 6055 states and 9129 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 01:49:23,616 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 01:49:26,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:26,038 INFO L93 Difference]: Finished difference Result 15534 states and 23385 transitions. [2022-11-03 01:49:26,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:49:26,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 160 [2022-11-03 01:49:26,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:26,099 INFO L225 Difference]: With dead ends: 15534 [2022-11-03 01:49:26,099 INFO L226 Difference]: Without dead ends: 9506 [2022-11-03 01:49:26,134 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 01:49:26,135 INFO L413 NwaCegarLoop]: 4367 mSDtfsCounter, 3447 mSDsluCounter, 3886 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3447 SdHoareTripleChecker+Valid, 7843 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:26,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3447 Valid, 7843 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 898 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-03 01:49:26,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9506 states. [2022-11-03 01:49:27,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9506 to 9468. [2022-11-03 01:49:27,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9468 states, 5622 states have (on average 1.3413376022767698) internal successors, (7541), 5966 states have internal predecessors, (7541), 3343 states have call successors, (3343), 503 states have call predecessors, (3343), 500 states have return successors, (3342), 3170 states have call predecessors, (3342), 3339 states have call successors, (3342) [2022-11-03 01:49:27,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9468 states to 9468 states and 14226 transitions. [2022-11-03 01:49:27,145 INFO L78 Accepts]: Start accepts. Automaton has 9468 states and 14226 transitions. Word has length 160 [2022-11-03 01:49:27,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:27,146 INFO L495 AbstractCegarLoop]: Abstraction has 9468 states and 14226 transitions. [2022-11-03 01:49:27,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 01:49:27,147 INFO L276 IsEmpty]: Start isEmpty. Operand 9468 states and 14226 transitions. [2022-11-03 01:49:27,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-03 01:49:27,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:27,151 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:27,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:49:27,152 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 01:49:27,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:27,152 INFO L85 PathProgramCache]: Analyzing trace with hash -933088271, now seen corresponding path program 1 times [2022-11-03 01:49:27,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:49:27,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005943285] [2022-11-03 01:49:27,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:27,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:49:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:27,963 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-03 01:49:27,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:49:27,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005943285] [2022-11-03 01:49:27,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005943285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:27,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:49:27,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:49:27,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117209638] [2022-11-03 01:49:27,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:27,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:49:27,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:49:27,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:49:27,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:49:27,968 INFO L87 Difference]: Start difference. First operand 9468 states and 14226 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-03 01:49:43,591 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 01:49:46,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:46,870 INFO L93 Difference]: Finished difference Result 34033 states and 51055 transitions. [2022-11-03 01:49:46,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:49:46,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 165 [2022-11-03 01:49:46,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:47,049 INFO L225 Difference]: With dead ends: 34033 [2022-11-03 01:49:47,050 INFO L226 Difference]: Without dead ends: 24592 [2022-11-03 01:49:47,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:49:47,117 INFO L413 NwaCegarLoop]: 5256 mSDtfsCounter, 8999 mSDsluCounter, 7686 mSDsCounter, 0 mSdLazyCounter, 6163 mSolverCounterSat, 1851 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9091 SdHoareTripleChecker+Valid, 11735 SdHoareTripleChecker+Invalid, 8015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1851 IncrementalHoareTripleChecker+Valid, 6163 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:47,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9091 Valid, 11735 Invalid, 8015 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1851 Valid, 6163 Invalid, 1 Unknown, 0 Unchecked, 17.6s Time] [2022-11-03 01:49:47,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24592 states. [2022-11-03 01:49:48,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24592 to 24484. [2022-11-03 01:49:49,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24484 states, 14490 states have (on average 1.3371980676328503) internal successors, (19376), 15410 states have internal predecessors, (19376), 8656 states have call successors, (8656), 1342 states have call predecessors, (8656), 1335 states have return successors, (8661), 8184 states have call predecessors, (8661), 8652 states have call successors, (8661) [2022-11-03 01:49:49,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24484 states to 24484 states and 36693 transitions. [2022-11-03 01:49:49,178 INFO L78 Accepts]: Start accepts. Automaton has 24484 states and 36693 transitions. Word has length 165 [2022-11-03 01:49:49,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:49,179 INFO L495 AbstractCegarLoop]: Abstraction has 24484 states and 36693 transitions. [2022-11-03 01:49:49,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-03 01:49:49,180 INFO L276 IsEmpty]: Start isEmpty. Operand 24484 states and 36693 transitions. [2022-11-03 01:49:49,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-03 01:49:49,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:49,185 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:49,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:49:49,186 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 01:49:49,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:49,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1766944042, now seen corresponding path program 1 times [2022-11-03 01:49:49,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:49:49,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418029182] [2022-11-03 01:49:49,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:49,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:49:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-03 01:49:49,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:49:49,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418029182] [2022-11-03 01:49:49,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418029182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:49,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:49:49,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:49:49,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011804399] [2022-11-03 01:49:49,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:49,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:49:49,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:49:49,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:49:49,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:49:49,747 INFO L87 Difference]: Start difference. First operand 24484 states and 36693 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-03 01:49:55,859 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 01:49:58,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:58,138 INFO L93 Difference]: Finished difference Result 69483 states and 104035 transitions. [2022-11-03 01:49:58,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:49:58,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 172 [2022-11-03 01:49:58,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:58,467 INFO L225 Difference]: With dead ends: 69483 [2022-11-03 01:49:58,468 INFO L226 Difference]: Without dead ends: 45026 [2022-11-03 01:49:58,607 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 01:49:58,610 INFO L413 NwaCegarLoop]: 4689 mSDtfsCounter, 3632 mSDsluCounter, 3912 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3632 SdHoareTripleChecker+Valid, 8179 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:58,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3632 Valid, 8179 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 937 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-11-03 01:49:58,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45026 states. [2022-11-03 01:50:03,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45026 to 44977. [2022-11-03 01:50:03,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44977 states, 26639 states have (on average 1.335635722061639) internal successors, (35580), 28331 states have internal predecessors, (35580), 15822 states have call successors, (15822), 2538 states have call predecessors, (15822), 2513 states have return successors, (15875), 14919 states have call predecessors, (15875), 15818 states have call successors, (15875) [2022-11-03 01:50:03,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44977 states to 44977 states and 67277 transitions. [2022-11-03 01:50:04,005 INFO L78 Accepts]: Start accepts. Automaton has 44977 states and 67277 transitions. Word has length 172 [2022-11-03 01:50:04,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:04,006 INFO L495 AbstractCegarLoop]: Abstraction has 44977 states and 67277 transitions. [2022-11-03 01:50:04,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-03 01:50:04,007 INFO L276 IsEmpty]: Start isEmpty. Operand 44977 states and 67277 transitions. [2022-11-03 01:50:04,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-03 01:50:04,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:04,012 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:50:04,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:50:04,012 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 01:50:04,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:04,013 INFO L85 PathProgramCache]: Analyzing trace with hash 901733676, now seen corresponding path program 1 times [2022-11-03 01:50:04,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:50:04,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093002960] [2022-11-03 01:50:04,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:04,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:50:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:04,696 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-03 01:50:04,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:50:04,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093002960] [2022-11-03 01:50:04,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093002960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:04,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:04,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:50:04,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999159194] [2022-11-03 01:50:04,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:04,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:50:04,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:50:04,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:50:04,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:50:04,700 INFO L87 Difference]: Start difference. First operand 44977 states and 67277 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 01:50:12,469 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 01:50:15,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:15,502 INFO L93 Difference]: Finished difference Result 133717 states and 200037 transitions. [2022-11-03 01:50:15,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:50:15,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 172 [2022-11-03 01:50:15,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:16,061 INFO L225 Difference]: With dead ends: 133717 [2022-11-03 01:50:16,061 INFO L226 Difference]: Without dead ends: 88767 [2022-11-03 01:50:16,292 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 01:50:16,294 INFO L413 NwaCegarLoop]: 4538 mSDtfsCounter, 3613 mSDsluCounter, 3932 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3613 SdHoareTripleChecker+Valid, 8042 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:16,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3613 Valid, 8042 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 930 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-03 01:50:16,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88767 states. [2022-11-03 01:50:22,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88767 to 88714. [2022-11-03 01:50:22,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88714 states, 52541 states have (on average 1.3341390533107478) internal successors, (70097), 55913 states have internal predecessors, (70097), 31199 states have call successors, (31199), 5020 states have call predecessors, (31199), 4971 states have return successors, (31309), 29392 states have call predecessors, (31309), 31195 states have call successors, (31309) [2022-11-03 01:50:23,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88714 states to 88714 states and 132605 transitions. [2022-11-03 01:50:23,285 INFO L78 Accepts]: Start accepts. Automaton has 88714 states and 132605 transitions. Word has length 172 [2022-11-03 01:50:23,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:23,303 INFO L495 AbstractCegarLoop]: Abstraction has 88714 states and 132605 transitions. [2022-11-03 01:50:23,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 01:50:23,303 INFO L276 IsEmpty]: Start isEmpty. Operand 88714 states and 132605 transitions. [2022-11-03 01:50:23,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-03 01:50:23,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:23,307 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:50:23,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:50:23,307 INFO L420 AbstractCegarLoop]: === Iteration 7 === 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 01:50:23,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:23,308 INFO L85 PathProgramCache]: Analyzing trace with hash -615425435, now seen corresponding path program 1 times [2022-11-03 01:50:23,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:50:23,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965556441] [2022-11-03 01:50:23,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:23,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:50:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:23,870 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-03 01:50:23,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:50:23,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965556441] [2022-11-03 01:50:23,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965556441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:23,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:23,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:50:23,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82573879] [2022-11-03 01:50:23,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:23,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:50:23,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:50:23,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:50:23,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:50:23,873 INFO L87 Difference]: Start difference. First operand 88714 states and 132605 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 01:50:31,187 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 01:50:36,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:36,676 INFO L93 Difference]: Finished difference Result 259089 states and 388453 transitions. [2022-11-03 01:50:36,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:50:36,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 173 [2022-11-03 01:50:36,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:38,006 INFO L225 Difference]: With dead ends: 259089 [2022-11-03 01:50:38,006 INFO L226 Difference]: Without dead ends: 170402 [2022-11-03 01:50:38,418 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 01:50:38,420 INFO L413 NwaCegarLoop]: 4633 mSDtfsCounter, 3622 mSDsluCounter, 3822 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3622 SdHoareTripleChecker+Valid, 8044 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:38,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3622 Valid, 8044 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 912 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-11-03 01:50:38,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170402 states.