./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e99a188-cbfb-4b8e-948c-3aa53595d32b/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e99a188-cbfb-4b8e-948c-3aa53595d32b/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e99a188-cbfb-4b8e-948c-3aa53595d32b/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e99a188-cbfb-4b8e-948c-3aa53595d32b/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e99a188-cbfb-4b8e-948c-3aa53595d32b/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e99a188-cbfb-4b8e-948c-3aa53595d32b/bin/utaipan-eEHZpOm5b7 --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 2ed7e65f4873f721e135371f2b64bea53a61355f60220cd3c965b9b34f2d17e4 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:51:11,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:51:11,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:51:11,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:51:11,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:51:11,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:51:11,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:51:11,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:51:11,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:51:11,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:51:11,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:51:11,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:51:11,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:51:11,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:51:11,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:51:11,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:51:11,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:51:11,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:51:11,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:51:11,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:51:11,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:51:11,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:51:11,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:51:11,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:51:11,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:51:11,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:51:11,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:51:11,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:51:11,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:51:11,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:51:11,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:51:11,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:51:11,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:51:11,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:51:12,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:51:12,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:51:12,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:51:12,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:51:12,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:51:12,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:51:12,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:51:12,005 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e99a188-cbfb-4b8e-948c-3aa53595d32b/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:51:12,047 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:51:12,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:51:12,048 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:51:12,048 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:51:12,055 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:51:12,055 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:51:12,055 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:51:12,056 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:51:12,056 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:51:12,056 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:51:12,057 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:51:12,057 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:51:12,058 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:51:12,058 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:51:12,058 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:51:12,058 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:51:12,059 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:51:12,059 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:51:12,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:51:12,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:51:12,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:51:12,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:51:12,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:51:12,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:51:12,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:51:12,061 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:51:12,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:51:12,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:51:12,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:51:12,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:51:12,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:51:12,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:51:12,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:51:12,064 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:51:12,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:51:12,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:51:12,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:51:12,065 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:51:12,065 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_3e99a188-cbfb-4b8e-948c-3aa53595d32b/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e99a188-cbfb-4b8e-948c-3aa53595d32b/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ed7e65f4873f721e135371f2b64bea53a61355f60220cd3c965b9b34f2d17e4 [2021-11-25 19:51:12,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:51:12,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:51:12,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:51:12,388 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:51:12,390 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:51:12,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e99a188-cbfb-4b8e-948c-3aa53595d32b/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i [2021-11-25 19:51:12,454 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e99a188-cbfb-4b8e-948c-3aa53595d32b/bin/utaipan-eEHZpOm5b7/data/9247edc7a/acc34d9ea6054c9789e2568c6bbcd758/FLAG16716dfda [2021-11-25 19:51:13,485 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:51:13,486 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e99a188-cbfb-4b8e-948c-3aa53595d32b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i [2021-11-25 19:51:13,589 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e99a188-cbfb-4b8e-948c-3aa53595d32b/bin/utaipan-eEHZpOm5b7/data/9247edc7a/acc34d9ea6054c9789e2568c6bbcd758/FLAG16716dfda [2021-11-25 19:51:13,928 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e99a188-cbfb-4b8e-948c-3aa53595d32b/bin/utaipan-eEHZpOm5b7/data/9247edc7a/acc34d9ea6054c9789e2568c6bbcd758 [2021-11-25 19:51:13,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:51:13,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:51:13,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:51:13,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:51:13,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:51:13,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:51:13" (1/1) ... [2021-11-25 19:51:13,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@524bf6e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:51:13, skipping insertion in model container [2021-11-25 19:51:13,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:51:13" (1/1) ... [2021-11-25 19:51:13,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:51:14,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:51:19,081 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_3e99a188-cbfb-4b8e-948c-3aa53595d32b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[464820,464833] [2021-11-25 19:51:19,084 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_3e99a188-cbfb-4b8e-948c-3aa53595d32b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[464989,465002] [2021-11-25 19:51:19,085 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_3e99a188-cbfb-4b8e-948c-3aa53595d32b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[465156,465169] [2021-11-25 19:51:19,093 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_3e99a188-cbfb-4b8e-948c-3aa53595d32b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[465324,465337] [2021-11-25 19:51:19,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:51:19,177 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:51:19,677 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_3e99a188-cbfb-4b8e-948c-3aa53595d32b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[464820,464833] [2021-11-25 19:51:19,678 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_3e99a188-cbfb-4b8e-948c-3aa53595d32b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[464989,465002] [2021-11-25 19:51:19,678 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_3e99a188-cbfb-4b8e-948c-3aa53595d32b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[465156,465169] [2021-11-25 19:51:19,679 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_3e99a188-cbfb-4b8e-948c-3aa53595d32b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[465324,465337] [2021-11-25 19:51:19,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:51:20,106 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:51:20,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:51:20 WrapperNode [2021-11-25 19:51:20,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:51:20,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:51:20,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:51:20,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:51:20,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:51:20" (1/1) ... [2021-11-25 19:51:20,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:51:20" (1/1) ... [2021-11-25 19:51:20,601 INFO L137 Inliner]: procedures = 663, calls = 2943, calls flagged for inlining = 321, calls inlined = 256, statements flattened = 6033 [2021-11-25 19:51:20,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:51:20,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:51:20,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:51:20,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:51:20,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:51:20" (1/1) ... [2021-11-25 19:51:20,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:51:20" (1/1) ... [2021-11-25 19:51:20,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:51:20" (1/1) ... [2021-11-25 19:51:20,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:51:20" (1/1) ... [2021-11-25 19:51:20,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:51:20" (1/1) ... [2021-11-25 19:51:20,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:51:20" (1/1) ... [2021-11-25 19:51:20,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:51:20" (1/1) ... [2021-11-25 19:51:20,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:51:20,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:51:20,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:51:20,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:51:20,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:51:20" (1/1) ... [2021-11-25 19:51:20,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:51:20,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e99a188-cbfb-4b8e-948c-3aa53595d32b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:51:20,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e99a188-cbfb-4b8e-948c-3aa53595d32b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:51:20,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e99a188-cbfb-4b8e-948c-3aa53595d32b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:51:20,978 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-25 19:51:20,978 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-25 19:51:20,978 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-25 19:51:20,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-25 19:51:20,978 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2021-11-25 19:51:20,978 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2021-11-25 19:51:20,979 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 19:51:20,979 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 19:51:20,979 INFO L130 BoogieDeclarations]: Found specification of procedure jme_reset_mac_processor [2021-11-25 19:51:20,979 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_reset_mac_processor [2021-11-25 19:51:20,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 19:51:20,979 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 19:51:20,980 INFO L130 BoogieDeclarations]: Found specification of procedure jwrite32 [2021-11-25 19:51:20,980 INFO L138 BoogieDeclarations]: Found implementation of procedure jwrite32 [2021-11-25 19:51:20,980 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-25 19:51:20,980 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-25 19:51:20,980 INFO L130 BoogieDeclarations]: Found specification of procedure jme_get_regs_len [2021-11-25 19:51:20,980 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_get_regs_len [2021-11-25 19:51:20,981 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 19:51:20,981 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 19:51:20,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 19:51:20,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 19:51:20,981 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_txclk_on [2021-11-25 19:51:20,981 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_txclk_on [2021-11-25 19:51:20,981 INFO L130 BoogieDeclarations]: Found specification of procedure jme_disable_rx_engine [2021-11-25 19:51:20,982 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_disable_rx_engine [2021-11-25 19:51:20,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 19:51:20,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 19:51:20,982 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-25 19:51:20,982 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-25 19:51:20,982 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-25 19:51:20,983 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-25 19:51:20,983 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 19:51:20,983 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 19:51:20,983 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 19:51:20,983 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 19:51:20,983 INFO L130 BoogieDeclarations]: Found specification of procedure jme_reset_link [2021-11-25 19:51:20,984 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_reset_link [2021-11-25 19:51:20,984 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 19:51:20,984 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 19:51:20,984 INFO L130 BoogieDeclarations]: Found specification of procedure jme_netpoll [2021-11-25 19:51:20,984 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_netpoll [2021-11-25 19:51:20,984 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_page [2021-11-25 19:51:20,985 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_page [2021-11-25 19:51:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 19:51:20,985 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 19:51:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 19:51:20,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 19:51:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 19:51:20,986 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 19:51:20,986 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 19:51:20,986 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 19:51:20,986 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-25 19:51:20,986 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 19:51:20,986 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 19:51:20,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 19:51:20,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 19:51:20,987 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-11-25 19:51:20,987 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-11-25 19:51:20,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:51:20,987 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-25 19:51:20,987 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-25 19:51:20,988 INFO L130 BoogieDeclarations]: Found specification of procedure jread32 [2021-11-25 19:51:20,988 INFO L138 BoogieDeclarations]: Found implementation of procedure jread32 [2021-11-25 19:51:20,988 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-25 19:51:20,988 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-25 19:51:20,988 INFO L130 BoogieDeclarations]: Found specification of procedure netif_receive_skb [2021-11-25 19:51:20,988 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 19:51:20,989 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 19:51:20,989 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_rx_pcc [2021-11-25 19:51:20,989 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_rx_pcc [2021-11-25 19:51:20,989 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-25 19:51:20,989 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-25 19:51:20,989 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2021-11-25 19:51:20,989 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2021-11-25 19:51:20,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 19:51:20,990 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_unicastaddr [2021-11-25 19:51:20,990 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_unicastaddr [2021-11-25 19:51:20,990 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 19:51:20,990 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 19:51:20,990 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 19:51:20,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 19:51:20,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 19:51:20,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 19:51:20,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 19:51:20,991 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_calibration [2021-11-25 19:51:20,991 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_calibration [2021-11-25 19:51:20,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:51:20,992 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 19:51:20,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 19:51:20,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_82 [2021-11-25 19:51:20,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_82 [2021-11-25 19:51:20,992 INFO L130 BoogieDeclarations]: Found specification of procedure jme_restart_rx_engine [2021-11-25 19:51:20,993 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_restart_rx_engine [2021-11-25 19:51:20,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_80 [2021-11-25 19:51:20,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_80 [2021-11-25 19:51:20,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 19:51:20,993 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 19:51:20,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_88 [2021-11-25 19:51:20,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_88 [2021-11-25 19:51:20,994 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-25 19:51:20,994 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-25 19:51:20,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 19:51:20,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 19:51:20,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 19:51:20,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 19:51:20,995 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_hi_schedule [2021-11-25 19:51:20,995 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_hi_schedule [2021-11-25 19:51:20,995 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-25 19:51:20,995 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-25 19:51:20,995 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 19:51:20,995 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 19:51:20,995 INFO L130 BoogieDeclarations]: Found specification of procedure jme_linkstat_from_phy [2021-11-25 19:51:20,996 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_linkstat_from_phy [2021-11-25 19:51:20,996 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mdio_write [2021-11-25 19:51:20,996 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mdio_write [2021-11-25 19:51:20,996 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_on [2021-11-25 19:51:20,996 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_on [2021-11-25 19:51:20,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 19:51:20,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 19:51:20,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:51:20,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 19:51:20,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 19:51:20,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 19:51:20,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 19:51:20,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 19:51:20,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 19:51:20,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-25 19:51:20,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-25 19:51:20,998 INFO L130 BoogieDeclarations]: Found specification of procedure smi_phy_addr [2021-11-25 19:51:20,998 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_phy_addr [2021-11-25 19:51:20,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:51:20,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 19:51:20,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 19:51:20,999 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 19:51:20,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 19:51:20,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:51:20,999 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-25 19:51:20,999 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-25 19:51:21,000 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:51:21,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:51:21,000 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:51:21,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:51:21,000 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-25 19:51:21,000 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-25 19:51:21,000 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 19:51:21,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 19:51:21,001 INFO L130 BoogieDeclarations]: Found specification of procedure reg_dbg [2021-11-25 19:51:21,001 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_dbg [2021-11-25 19:51:21,001 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 19:51:21,001 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 19:51:21,001 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 19:51:21,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 19:51:21,002 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 19:51:21,002 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 19:51:21,002 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 19:51:21,002 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 19:51:21,002 INFO L130 BoogieDeclarations]: Found specification of procedure jme_start_irq [2021-11-25 19:51:21,002 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_start_irq [2021-11-25 19:51:21,002 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-11-25 19:51:21,003 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-11-25 19:51:21,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:51:21,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:51:21,003 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-25 19:51:21,003 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-25 19:51:21,003 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-25 19:51:21,003 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-25 19:51:21,004 INFO L130 BoogieDeclarations]: Found specification of procedure jme_fill_tx_map [2021-11-25 19:51:21,004 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_fill_tx_map [2021-11-25 19:51:21,004 INFO L130 BoogieDeclarations]: Found specification of procedure jme_free_tx_resources [2021-11-25 19:51:21,004 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_free_tx_resources [2021-11-25 19:51:21,004 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-25 19:51:21,004 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-25 19:51:21,004 INFO L130 BoogieDeclarations]: Found specification of procedure jme_polling_mode [2021-11-25 19:51:21,005 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_polling_mode [2021-11-25 19:51:21,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 19:51:21,005 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable_pending [2021-11-25 19:51:21,005 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable_pending [2021-11-25 19:51:21,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 19:51:21,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 19:51:21,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 19:51:21,006 INFO L130 BoogieDeclarations]: Found specification of procedure jme_remove_one [2021-11-25 19:51:21,006 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_remove_one [2021-11-25 19:51:21,006 INFO L130 BoogieDeclarations]: Found specification of procedure jme_powersave_phy [2021-11-25 19:51:21,006 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_powersave_phy [2021-11-25 19:51:21,006 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_rxclk_on [2021-11-25 19:51:21,006 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_rxclk_on [2021-11-25 19:51:21,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_jme_cleanup_module_13_2 [2021-11-25 19:51:21,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_jme_cleanup_module_13_2 [2021-11-25 19:51:21,007 INFO L130 BoogieDeclarations]: Found specification of procedure new_phy_power_ctrl [2021-11-25 19:51:21,007 INFO L138 BoogieDeclarations]: Found implementation of procedure new_phy_power_ctrl [2021-11-25 19:51:21,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 19:51:21,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 19:51:21,007 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 19:51:21,008 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 19:51:21,008 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2021-11-25 19:51:21,008 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2021-11-25 19:51:21,008 INFO L130 BoogieDeclarations]: Found specification of procedure jme_intr_msi [2021-11-25 19:51:21,008 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_intr_msi [2021-11-25 19:51:21,008 INFO L130 BoogieDeclarations]: Found specification of procedure jwrite32f [2021-11-25 19:51:21,008 INFO L138 BoogieDeclarations]: Found implementation of procedure jwrite32f [2021-11-25 19:51:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure smi_reg_addr [2021-11-25 19:51:21,009 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_reg_addr [2021-11-25 19:51:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure jme_get_settings [2021-11-25 19:51:21,009 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_get_settings [2021-11-25 19:51:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-25 19:51:21,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-25 19:51:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-25 19:51:21,010 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-25 19:51:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 19:51:21,010 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 19:51:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 19:51:21,010 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 19:51:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-25 19:51:21,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-25 19:51:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-25 19:51:21,011 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-25 19:51:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure jme_nway_reset [2021-11-25 19:51:21,011 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_nway_reset [2021-11-25 19:51:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 19:51:21,011 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 19:51:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:51:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-25 19:51:21,012 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-25 19:51:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 19:51:21,012 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 19:51:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:51:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure jme_free_rx_resources [2021-11-25 19:51:21,012 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_free_rx_resources [2021-11-25 19:51:21,013 INFO L130 BoogieDeclarations]: Found specification of procedure jme_resume [2021-11-25 19:51:21,013 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_resume [2021-11-25 19:51:21,013 INFO L130 BoogieDeclarations]: Found specification of procedure jme_tx_timeout [2021-11-25 19:51:21,013 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_tx_timeout [2021-11-25 19:51:21,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:51:21,013 INFO L130 BoogieDeclarations]: Found specification of procedure jme_disable_tx_engine [2021-11-25 19:51:21,013 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_disable_tx_engine [2021-11-25 19:51:21,014 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 19:51:21,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 19:51:21,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-25 19:51:21,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-25 19:51:21,014 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 19:51:21,015 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 19:51:21,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 19:51:21,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 19:51:21,015 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_txclk_off [2021-11-25 19:51:21,015 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_txclk_off [2021-11-25 19:51:21,015 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_setEA [2021-11-25 19:51:21,016 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_setEA [2021-11-25 19:51:21,016 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-25 19:51:21,016 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-25 19:51:21,016 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_multi [2021-11-25 19:51:21,016 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_multi [2021-11-25 19:51:21,016 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-25 19:51:21,016 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-25 19:51:21,017 INFO L130 BoogieDeclarations]: Found specification of procedure mmapio_memcpy [2021-11-25 19:51:21,017 INFO L138 BoogieDeclarations]: Found implementation of procedure mmapio_memcpy [2021-11-25 19:51:21,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_87 [2021-11-25 19:51:21,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_87 [2021-11-25 19:51:21,017 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 19:51:21,017 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 19:51:21,017 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 19:51:21,018 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 19:51:21,018 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_specreg_read [2021-11-25 19:51:21,018 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_specreg_read [2021-11-25 19:51:21,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_81 [2021-11-25 19:51:21,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_81 [2021-11-25 19:51:21,018 INFO L130 BoogieDeclarations]: Found specification of procedure jme_clear_pm [2021-11-25 19:51:21,018 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_clear_pm [2021-11-25 19:51:21,019 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_disable [2021-11-25 19:51:21,019 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_disable [2021-11-25 19:51:21,019 INFO L130 BoogieDeclarations]: Found specification of procedure jme_close [2021-11-25 19:51:21,019 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_close [2021-11-25 19:51:21,019 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 19:51:21,019 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 19:51:21,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_79 [2021-11-25 19:51:21,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_79 [2021-11-25 19:51:21,020 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-25 19:51:21,020 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-25 19:51:21,020 INFO L130 BoogieDeclarations]: Found specification of procedure jme_stop_irq [2021-11-25 19:51:21,020 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_stop_irq [2021-11-25 19:51:21,020 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 19:51:21,020 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 19:51:21,020 INFO L130 BoogieDeclarations]: Found specification of procedure jme_shutdown [2021-11-25 19:51:21,021 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_shutdown [2021-11-25 19:51:21,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:51:21,021 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_rxclk_off [2021-11-25 19:51:21,021 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_rxclk_off [2021-11-25 19:51:21,021 INFO L130 BoogieDeclarations]: Found specification of procedure jme_reset_phy_processor [2021-11-25 19:51:21,021 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_reset_phy_processor [2021-11-25 19:51:21,021 INFO L130 BoogieDeclarations]: Found specification of procedure jme_suspend [2021-11-25 19:51:21,022 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_suspend [2021-11-25 19:51:21,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 19:51:21,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 19:51:21,022 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-25 19:51:21,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-25 19:51:21,022 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_specreg_write [2021-11-25 19:51:21,022 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_specreg_write [2021-11-25 19:51:21,023 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 19:51:21,023 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 19:51:21,023 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_off [2021-11-25 19:51:21,023 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_off [2021-11-25 19:51:21,023 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_phyfifo_5level [2021-11-25 19:51:21,023 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_phyfifo_5level [2021-11-25 19:51:21,023 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-25 19:51:21,023 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-25 19:51:21,024 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-25 19:51:21,024 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-25 19:51:21,024 INFO L130 BoogieDeclarations]: Found specification of procedure jme_get_eeprom_len [2021-11-25 19:51:21,024 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_get_eeprom_len [2021-11-25 19:51:21,024 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2021-11-25 19:51:21,024 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2021-11-25 19:51:21,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 19:51:21,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 19:51:21,025 INFO L130 BoogieDeclarations]: Found specification of procedure jme_stop_pcc_timer [2021-11-25 19:51:21,025 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_stop_pcc_timer [2021-11-25 19:51:21,025 INFO L130 BoogieDeclarations]: Found specification of procedure jme_interrupt_mode [2021-11-25 19:51:21,025 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_interrupt_mode [2021-11-25 19:51:21,025 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_settings [2021-11-25 19:51:21,025 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_settings [2021-11-25 19:51:21,026 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mdio_read [2021-11-25 19:51:21,026 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mdio_read [2021-11-25 19:51:21,026 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2021-11-25 19:51:21,026 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2021-11-25 19:51:21,026 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 19:51:21,026 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 19:51:21,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:51:21,027 INFO L130 BoogieDeclarations]: Found specification of procedure jme_open [2021-11-25 19:51:21,027 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_open [2021-11-25 19:51:21,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 19:51:21,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 19:51:21,027 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2021-11-25 19:51:21,027 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2021-11-25 19:51:21,027 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_enable [2021-11-25 19:51:21,027 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_enable [2021-11-25 19:51:21,962 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:51:21,970 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:51:22,500 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 19:51:27,625 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 19:51:27,770 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:51:29,116 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:51:29,116 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-25 19:51:29,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:51:29 BoogieIcfgContainer [2021-11-25 19:51:29,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:51:29,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:51:29,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:51:29,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:51:29,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:51:13" (1/3) ... [2021-11-25 19:51:29,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c05bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:51:29, skipping insertion in model container [2021-11-25 19:51:29,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:51:20" (2/3) ... [2021-11-25 19:51:29,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c05bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:51:29, skipping insertion in model container [2021-11-25 19:51:29,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:51:29" (3/3) ... [2021-11-25 19:51:29,129 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i [2021-11-25 19:51:29,134 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:51:29,134 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 19:51:29,189 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:51:29,195 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:51:29,196 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 19:51:29,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 2082 states, 1186 states have (on average 1.302698145025295) internal successors, (1545), 1237 states have internal predecessors, (1545), 740 states have call successors, (740), 158 states have call predecessors, (740), 157 states have return successors, (731), 715 states have call predecessors, (731), 731 states have call successors, (731) [2021-11-25 19:51:29,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-25 19:51:29,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:51:29,302 INFO L514 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:51:29,303 INFO L402 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)] === [2021-11-25 19:51:29,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:51:29,308 INFO L85 PathProgramCache]: Analyzing trace with hash -315990233, now seen corresponding path program 1 times [2021-11-25 19:51:29,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:51:29,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984439670] [2021-11-25 19:51:29,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:51:29,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:51:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:51:30,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2021-11-25 19:51:30,225 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:51:30,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984439670] [2021-11-25 19:51:30,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984439670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:51:30,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:51:30,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:51:30,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921919543] [2021-11-25 19:51:30,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:51:30,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:51:30,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:51:30,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:51:30,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:51:30,268 INFO L87 Difference]: Start difference. First operand has 2082 states, 1186 states have (on average 1.302698145025295) internal successors, (1545), 1237 states have internal predecessors, (1545), 740 states have call successors, (740), 158 states have call predecessors, (740), 157 states have return successors, (731), 715 states have call predecessors, (731), 731 states have call successors, (731) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 19:51:33,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:51:35,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:51:35,009 INFO L93 Difference]: Finished difference Result 5941 states and 8762 transitions. [2021-11-25 19:51:35,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:51:35,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 201 [2021-11-25 19:51:35,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:51:35,082 INFO L225 Difference]: With dead ends: 5941 [2021-11-25 19:51:35,082 INFO L226 Difference]: Without dead ends: 3883 [2021-11-25 19:51:35,112 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:51:35,119 INFO L933 BasicCegarLoop]: 3318 mSDtfsCounter, 2648 mSDsluCounter, 2937 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2648 SdHoareTripleChecker+Valid, 5851 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:51:35,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2648 Valid, 5851 Invalid, 878 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 870 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2021-11-25 19:51:35,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3883 states. [2021-11-25 19:51:35,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3883 to 3878. [2021-11-25 19:51:35,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 2222 states have (on average 1.298829882988299) internal successors, (2886), 2313 states have internal predecessors, (2886), 1346 states have call successors, (1346), 308 states have call predecessors, (1346), 307 states have return successors, (1342), 1311 states have call predecessors, (1342), 1342 states have call successors, (1342) [2021-11-25 19:51:35,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 5574 transitions. [2021-11-25 19:51:35,591 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 5574 transitions. Word has length 201 [2021-11-25 19:51:35,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:51:35,595 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 5574 transitions. [2021-11-25 19:51:35,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 19:51:35,597 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 5574 transitions. [2021-11-25 19:51:35,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-25 19:51:35,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:51:35,613 INFO L514 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:51:35,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:51:35,614 INFO L402 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)] === [2021-11-25 19:51:35,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:51:35,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1925710896, now seen corresponding path program 1 times [2021-11-25 19:51:35,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:51:35,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672199481] [2021-11-25 19:51:35,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:51:35,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:51:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:51:36,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2021-11-25 19:51:36,015 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:51:36,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672199481] [2021-11-25 19:51:36,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672199481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:51:36,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:51:36,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:51:36,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365070289] [2021-11-25 19:51:36,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:51:36,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:51:36,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:51:36,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:51:36,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:51:36,025 INFO L87 Difference]: Start difference. First operand 3878 states and 5574 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 19:51:38,453 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:51:40,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:51:40,358 INFO L93 Difference]: Finished difference Result 8607 states and 12304 transitions. [2021-11-25 19:51:40,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:51:40,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 209 [2021-11-25 19:51:40,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:51:40,404 INFO L225 Difference]: With dead ends: 8607 [2021-11-25 19:51:40,404 INFO L226 Difference]: Without dead ends: 4766 [2021-11-25 19:51:40,427 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:51:40,428 INFO L933 BasicCegarLoop]: 3164 mSDtfsCounter, 1954 mSDsluCounter, 2844 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 5646 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:51:40,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1954 Valid, 5646 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 906 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2021-11-25 19:51:40,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4766 states. [2021-11-25 19:51:40,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4766 to 4734. [2021-11-25 19:51:40,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4734 states, 2676 states have (on average 1.2843796711509716) internal successors, (3437), 2800 states have internal predecessors, (3437), 1648 states have call successors, (1648), 409 states have call predecessors, (1648), 407 states have return successors, (1645), 1595 states have call predecessors, (1645), 1644 states have call successors, (1645) [2021-11-25 19:51:40,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4734 states to 4734 states and 6730 transitions. [2021-11-25 19:51:40,878 INFO L78 Accepts]: Start accepts. Automaton has 4734 states and 6730 transitions. Word has length 209 [2021-11-25 19:51:40,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:51:40,879 INFO L470 AbstractCegarLoop]: Abstraction has 4734 states and 6730 transitions. [2021-11-25 19:51:40,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 19:51:40,880 INFO L276 IsEmpty]: Start isEmpty. Operand 4734 states and 6730 transitions. [2021-11-25 19:51:40,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-25 19:51:40,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:51:40,886 INFO L514 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:51:40,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:51:40,886 INFO L402 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)] === [2021-11-25 19:51:40,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:51:40,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1404481770, now seen corresponding path program 1 times [2021-11-25 19:51:40,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:51:40,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015131186] [2021-11-25 19:51:40,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:51:40,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:51:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:51:41,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2021-11-25 19:51:41,124 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:51:41,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015131186] [2021-11-25 19:51:41,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015131186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:51:41,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:51:41,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:51:41,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611456134] [2021-11-25 19:51:41,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:51:41,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:51:41,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:51:41,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:51:41,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:51:41,131 INFO L87 Difference]: Start difference. First operand 4734 states and 6730 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 19:51:44,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:51:44,806 INFO L93 Difference]: Finished difference Result 13515 states and 19165 transitions. [2021-11-25 19:51:44,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:51:44,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 212 [2021-11-25 19:51:44,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:51:44,889 INFO L225 Difference]: With dead ends: 13515 [2021-11-25 19:51:44,889 INFO L226 Difference]: Without dead ends: 8818 [2021-11-25 19:51:44,920 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:51:44,925 INFO L933 BasicCegarLoop]: 3517 mSDtfsCounter, 2682 mSDsluCounter, 2871 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2682 SdHoareTripleChecker+Valid, 6007 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:51:44,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2682 Valid, 6007 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-25 19:51:44,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8818 states. [2021-11-25 19:51:45,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8818 to 8782. [2021-11-25 19:51:45,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8782 states, 4945 states have (on average 1.267138523761375) internal successors, (6266), 5169 states have internal predecessors, (6266), 3047 states have call successors, (3047), 790 states have call predecessors, (3047), 787 states have return successors, (3044), 2954 states have call predecessors, (3044), 3043 states have call successors, (3044) [2021-11-25 19:51:45,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8782 states to 8782 states and 12357 transitions. [2021-11-25 19:51:45,536 INFO L78 Accepts]: Start accepts. Automaton has 8782 states and 12357 transitions. Word has length 212 [2021-11-25 19:51:45,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:51:45,537 INFO L470 AbstractCegarLoop]: Abstraction has 8782 states and 12357 transitions. [2021-11-25 19:51:45,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 19:51:45,539 INFO L276 IsEmpty]: Start isEmpty. Operand 8782 states and 12357 transitions. [2021-11-25 19:51:45,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-25 19:51:45,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:51:45,544 INFO L514 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:51:45,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:51:45,545 INFO L402 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)] === [2021-11-25 19:51:45,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:51:45,546 INFO L85 PathProgramCache]: Analyzing trace with hash -809018407, now seen corresponding path program 1 times [2021-11-25 19:51:45,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:51:45,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616325158] [2021-11-25 19:51:45,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:51:45,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:51:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:51:45,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2021-11-25 19:51:45,873 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:51:45,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616325158] [2021-11-25 19:51:45,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616325158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:51:45,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:51:45,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:51:45,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103235423] [2021-11-25 19:51:45,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:51:45,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:51:45,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:51:45,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:51:45,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:51:45,877 INFO L87 Difference]: Start difference. First operand 8782 states and 12357 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 19:51:48,821 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:51:51,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:51:51,231 INFO L93 Difference]: Finished difference Result 22708 states and 31964 transitions. [2021-11-25 19:51:51,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:51:51,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 216 [2021-11-25 19:51:51,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:51:51,372 INFO L225 Difference]: With dead ends: 22708 [2021-11-25 19:51:51,372 INFO L226 Difference]: Without dead ends: 13963 [2021-11-25 19:51:51,432 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:51:51,433 INFO L933 BasicCegarLoop]: 3757 mSDtfsCounter, 2495 mSDsluCounter, 2905 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2495 SdHoareTripleChecker+Valid, 6263 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:51:51,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2495 Valid, 6263 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1052 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-11-25 19:51:51,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13963 states. [2021-11-25 19:51:52,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13963 to 13927. [2021-11-25 19:51:52,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13927 states, 7859 states have (on average 1.2616108919709887) internal successors, (9915), 8221 states have internal predecessors, (9915), 4805 states have call successors, (4805), 1268 states have call predecessors, (4805), 1260 states have return successors, (4803), 4646 states have call predecessors, (4803), 4801 states have call successors, (4803) [2021-11-25 19:51:52,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13927 states to 13927 states and 19523 transitions. [2021-11-25 19:51:52,358 INFO L78 Accepts]: Start accepts. Automaton has 13927 states and 19523 transitions. Word has length 216 [2021-11-25 19:51:52,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:51:52,359 INFO L470 AbstractCegarLoop]: Abstraction has 13927 states and 19523 transitions. [2021-11-25 19:51:52,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 19:51:52,360 INFO L276 IsEmpty]: Start isEmpty. Operand 13927 states and 19523 transitions. [2021-11-25 19:51:52,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-25 19:51:52,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:51:52,366 INFO L514 BasicCegarLoop]: trace histogram [20, 18, 18, 18, 18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:51:52,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:51:52,367 INFO L402 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)] === [2021-11-25 19:51:52,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:51:52,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1190815877, now seen corresponding path program 1 times [2021-11-25 19:51:52,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:51:52,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866281425] [2021-11-25 19:51:52,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:51:52,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:51:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:51:52,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1298 trivial. 0 not checked. [2021-11-25 19:51:52,576 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:51:52,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866281425] [2021-11-25 19:51:52,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866281425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:51:52,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:51:52,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:51:52,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965858940] [2021-11-25 19:51:52,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:51:52,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:51:52,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:51:52,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:51:52,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:51:52,580 INFO L87 Difference]: Start difference. First operand 13927 states and 19523 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-25 19:51:56,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:51:56,114 INFO L93 Difference]: Finished difference Result 35979 states and 50557 transitions. [2021-11-25 19:51:56,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:51:56,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 232 [2021-11-25 19:51:56,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:51:56,258 INFO L225 Difference]: With dead ends: 35979 [2021-11-25 19:51:56,258 INFO L226 Difference]: Without dead ends: 22089 [2021-11-25 19:51:56,322 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:51:56,323 INFO L933 BasicCegarLoop]: 3515 mSDtfsCounter, 2811 mSDsluCounter, 2921 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2811 SdHoareTripleChecker+Valid, 6033 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:51:56,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2811 Valid, 6033 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-25 19:51:56,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22089 states. [2021-11-25 19:51:57,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22089 to 22043. [2021-11-25 19:51:57,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22043 states, 12585 states have (on average 1.2659515295987287) internal successors, (15932), 13175 states have internal predecessors, (15932), 7504 states have call successors, (7504), 1966 states have call predecessors, (7504), 1951 states have return successors, (7504), 7230 states have call predecessors, (7504), 7500 states have call successors, (7504) [2021-11-25 19:51:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22043 states to 22043 states and 30940 transitions. [2021-11-25 19:51:57,766 INFO L78 Accepts]: Start accepts. Automaton has 22043 states and 30940 transitions. Word has length 232 [2021-11-25 19:51:57,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:51:57,767 INFO L470 AbstractCegarLoop]: Abstraction has 22043 states and 30940 transitions. [2021-11-25 19:51:57,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-25 19:51:57,767 INFO L276 IsEmpty]: Start isEmpty. Operand 22043 states and 30940 transitions. [2021-11-25 19:51:57,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-25 19:51:57,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:51:57,772 INFO L514 BasicCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:51:57,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:51:57,773 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:51:57,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:51:57,774 INFO L85 PathProgramCache]: Analyzing trace with hash 811468684, now seen corresponding path program 1 times [2021-11-25 19:51:57,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:51:57,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20565777] [2021-11-25 19:51:57,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:51:57,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:51:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:51:58,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1407 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1407 trivial. 0 not checked. [2021-11-25 19:51:58,326 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:51:58,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20565777] [2021-11-25 19:51:58,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20565777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:51:58,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:51:58,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:51:58,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839283438] [2021-11-25 19:51:58,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:51:58,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:51:58,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:51:58,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:51:58,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:51:58,338 INFO L87 Difference]: Start difference. First operand 22043 states and 30940 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 19:52:02,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:52:02,471 INFO L93 Difference]: Finished difference Result 22049 states and 30945 transitions. [2021-11-25 19:52:02,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:52:02,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 243 [2021-11-25 19:52:02,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:52:02,579 INFO L225 Difference]: With dead ends: 22049 [2021-11-25 19:52:02,579 INFO L226 Difference]: Without dead ends: 22047 [2021-11-25 19:52:02,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:52:02,590 INFO L933 BasicCegarLoop]: 2540 mSDtfsCounter, 2888 mSDsluCounter, 5892 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2904 SdHoareTripleChecker+Valid, 7602 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:52:02,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2904 Valid, 7602 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-25 19:52:02,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22047 states. [2021-11-25 19:52:03,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22047 to 22047. [2021-11-25 19:52:03,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22047 states, 12588 states have (on average 1.2658881474420083) internal successors, (15935), 13178 states have internal predecessors, (15935), 7504 states have call successors, (7504), 1967 states have call predecessors, (7504), 1952 states have return successors, (7504), 7230 states have call predecessors, (7504), 7500 states have call successors, (7504) [2021-11-25 19:52:04,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22047 states to 22047 states and 30943 transitions. [2021-11-25 19:52:04,010 INFO L78 Accepts]: Start accepts. Automaton has 22047 states and 30943 transitions. Word has length 243 [2021-11-25 19:52:04,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:52:04,011 INFO L470 AbstractCegarLoop]: Abstraction has 22047 states and 30943 transitions. [2021-11-25 19:52:04,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 19:52:04,011 INFO L276 IsEmpty]: Start isEmpty. Operand 22047 states and 30943 transitions. [2021-11-25 19:52:04,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-25 19:52:04,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:52:04,017 INFO L514 BasicCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:52:04,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:52:04,018 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:52:04,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:52:04,019 INFO L85 PathProgramCache]: Analyzing trace with hash -948728427, now seen corresponding path program 1 times [2021-11-25 19:52:04,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:52:04,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340127083] [2021-11-25 19:52:04,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:52:04,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:52:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:52:04,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1414 trivial. 0 not checked. [2021-11-25 19:52:04,355 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:52:04,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340127083] [2021-11-25 19:52:04,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340127083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:52:04,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:52:04,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:52:04,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466562322] [2021-11-25 19:52:04,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:52:04,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:52:04,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:52:04,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:52:04,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:52:04,358 INFO L87 Difference]: Start difference. First operand 22047 states and 30943 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 19:52:08,111 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:52:10,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:52:10,189 INFO L93 Difference]: Finished difference Result 22053 states and 30948 transitions. [2021-11-25 19:52:10,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:52:10,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 251 [2021-11-25 19:52:10,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:52:10,313 INFO L225 Difference]: With dead ends: 22053 [2021-11-25 19:52:10,314 INFO L226 Difference]: Without dead ends: 22051 [2021-11-25 19:52:10,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:52:10,331 INFO L933 BasicCegarLoop]: 2543 mSDtfsCounter, 2882 mSDsluCounter, 5892 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2897 SdHoareTripleChecker+Valid, 7605 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:52:10,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2897 Valid, 7605 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1268 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2021-11-25 19:52:10,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22051 states. [2021-11-25 19:52:11,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22051 to 22051. [2021-11-25 19:52:11,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22051 states, 12591 states have (on average 1.2658247954888413) internal successors, (15938), 13181 states have internal predecessors, (15938), 7504 states have call successors, (7504), 1968 states have call predecessors, (7504), 1953 states have return successors, (7504), 7230 states have call predecessors, (7504), 7500 states have call successors, (7504) [2021-11-25 19:52:11,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22051 states to 22051 states and 30946 transitions. [2021-11-25 19:52:11,882 INFO L78 Accepts]: Start accepts. Automaton has 22051 states and 30946 transitions. Word has length 251 [2021-11-25 19:52:11,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:52:11,884 INFO L470 AbstractCegarLoop]: Abstraction has 22051 states and 30946 transitions. [2021-11-25 19:52:11,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 19:52:11,884 INFO L276 IsEmpty]: Start isEmpty. Operand 22051 states and 30946 transitions. [2021-11-25 19:52:11,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-25 19:52:11,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:52:11,889 INFO L514 BasicCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:52:11,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:52:11,889 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:52:11,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:52:11,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1169538300, now seen corresponding path program 1 times [2021-11-25 19:52:11,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:52:11,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054022216] [2021-11-25 19:52:11,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:52:11,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:52:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:52:12,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1423 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1419 trivial. 0 not checked. [2021-11-25 19:52:12,192 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:52:12,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054022216] [2021-11-25 19:52:12,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054022216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:52:12,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:52:12,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:52:12,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711096764] [2021-11-25 19:52:12,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:52:12,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:52:12,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:52:12,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:52:12,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:52:12,195 INFO L87 Difference]: Start difference. First operand 22051 states and 30946 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-25 19:52:15,213 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:52:17,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:52:17,927 INFO L93 Difference]: Finished difference Result 22057 states and 30951 transitions. [2021-11-25 19:52:17,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:52:17,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 257 [2021-11-25 19:52:17,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:52:18,046 INFO L225 Difference]: With dead ends: 22057 [2021-11-25 19:52:18,047 INFO L226 Difference]: Without dead ends: 22055 [2021-11-25 19:52:18,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:52:18,058 INFO L933 BasicCegarLoop]: 2543 mSDtfsCounter, 2882 mSDsluCounter, 5892 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2896 SdHoareTripleChecker+Valid, 7605 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:52:18,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2896 Valid, 7605 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-25 19:52:18,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22055 states. [2021-11-25 19:52:19,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22055 to 22055. [2021-11-25 19:52:19,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22055 states, 12594 states have (on average 1.2657614737176432) internal successors, (15941), 13184 states have internal predecessors, (15941), 7504 states have call successors, (7504), 1969 states have call predecessors, (7504), 1954 states have return successors, (7504), 7230 states have call predecessors, (7504), 7500 states have call successors, (7504) [2021-11-25 19:52:19,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22055 states to 22055 states and 30949 transitions. [2021-11-25 19:52:19,540 INFO L78 Accepts]: Start accepts. Automaton has 22055 states and 30949 transitions. Word has length 257 [2021-11-25 19:52:19,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:52:19,541 INFO L470 AbstractCegarLoop]: Abstraction has 22055 states and 30949 transitions. [2021-11-25 19:52:19,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-25 19:52:19,541 INFO L276 IsEmpty]: Start isEmpty. Operand 22055 states and 30949 transitions. [2021-11-25 19:52:19,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-25 19:52:19,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:52:19,546 INFO L514 BasicCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:52:19,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:52:19,547 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:52:19,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:52:19,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1815375207, now seen corresponding path program 1 times [2021-11-25 19:52:19,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:52:19,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427189064] [2021-11-25 19:52:19,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:52:19,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:52:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:52:19,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1425 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1419 trivial. 0 not checked. [2021-11-25 19:52:19,792 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:52:19,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427189064] [2021-11-25 19:52:19,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427189064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:52:19,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:52:19,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:52:19,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921811613] [2021-11-25 19:52:19,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:52:19,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:52:19,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:52:19,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:52:19,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:52:19,796 INFO L87 Difference]: Start difference. First operand 22055 states and 30949 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 19:52:23,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:52:23,897 INFO L93 Difference]: Finished difference Result 22061 states and 30954 transitions. [2021-11-25 19:52:23,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:52:23,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 258 [2021-11-25 19:52:23,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:52:24,007 INFO L225 Difference]: With dead ends: 22061 [2021-11-25 19:52:24,008 INFO L226 Difference]: Without dead ends: 22059 [2021-11-25 19:52:24,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:52:24,020 INFO L933 BasicCegarLoop]: 2543 mSDtfsCounter, 2883 mSDsluCounter, 5892 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2896 SdHoareTripleChecker+Valid, 7605 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:52:24,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2896 Valid, 7605 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-25 19:52:24,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22059 states. [2021-11-25 19:52:25,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22059 to 22059. [2021-11-25 19:52:25,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22059 states, 12597 states have (on average 1.265698182106851) internal successors, (15944), 13187 states have internal predecessors, (15944), 7504 states have call successors, (7504), 1970 states have call predecessors, (7504), 1955 states have return successors, (7504), 7230 states have call predecessors, (7504), 7500 states have call successors, (7504) [2021-11-25 19:52:25,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22059 states to 22059 states and 30952 transitions. [2021-11-25 19:52:25,535 INFO L78 Accepts]: Start accepts. Automaton has 22059 states and 30952 transitions. Word has length 258 [2021-11-25 19:52:25,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:52:25,536 INFO L470 AbstractCegarLoop]: Abstraction has 22059 states and 30952 transitions. [2021-11-25 19:52:25,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 19:52:25,536 INFO L276 IsEmpty]: Start isEmpty. Operand 22059 states and 30952 transitions. [2021-11-25 19:52:25,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-11-25 19:52:25,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:52:25,542 INFO L514 BasicCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:52:25,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:52:25,542 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:52:25,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:52:25,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1736361804, now seen corresponding path program 1 times [2021-11-25 19:52:25,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:52:25,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169092287] [2021-11-25 19:52:25,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:52:25,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:52:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:52:25,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1439 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2021-11-25 19:52:25,764 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:52:25,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169092287] [2021-11-25 19:52:25,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169092287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:52:25,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:52:25,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:52:25,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667135255] [2021-11-25 19:52:25,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:52:25,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:52:25,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:52:25,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:52:25,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:52:25,767 INFO L87 Difference]: Start difference. First operand 22059 states and 30952 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-25 19:52:28,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:52:30,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:52:30,895 INFO L93 Difference]: Finished difference Result 22065 states and 30957 transitions. [2021-11-25 19:52:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:52:30,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 263 [2021-11-25 19:52:30,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:52:30,998 INFO L225 Difference]: With dead ends: 22065 [2021-11-25 19:52:30,998 INFO L226 Difference]: Without dead ends: 22063 [2021-11-25 19:52:31,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:52:31,010 INFO L933 BasicCegarLoop]: 2543 mSDtfsCounter, 2883 mSDsluCounter, 5892 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2895 SdHoareTripleChecker+Valid, 7605 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:52:31,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2895 Valid, 7605 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-25 19:52:31,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22063 states. [2021-11-25 19:52:32,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22063 to 22063. [2021-11-25 19:52:32,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22063 states, 12600 states have (on average 1.2656349206349207) internal successors, (15947), 13190 states have internal predecessors, (15947), 7504 states have call successors, (7504), 1971 states have call predecessors, (7504), 1956 states have return successors, (7504), 7230 states have call predecessors, (7504), 7500 states have call successors, (7504) [2021-11-25 19:52:32,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22063 states to 22063 states and 30955 transitions. [2021-11-25 19:52:32,317 INFO L78 Accepts]: Start accepts. Automaton has 22063 states and 30955 transitions. Word has length 263 [2021-11-25 19:52:32,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:52:32,318 INFO L470 AbstractCegarLoop]: Abstraction has 22063 states and 30955 transitions. [2021-11-25 19:52:32,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-25 19:52:32,319 INFO L276 IsEmpty]: Start isEmpty. Operand 22063 states and 30955 transitions. [2021-11-25 19:52:32,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-11-25 19:52:32,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:52:32,325 INFO L514 BasicCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:52:32,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:52:32,325 INFO L402 AbstractCegarLoop]: === Iteration 11 === 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)] === [2021-11-25 19:52:32,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:52:32,326 INFO L85 PathProgramCache]: Analyzing trace with hash 131283408, now seen corresponding path program 1 times [2021-11-25 19:52:32,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:52:32,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643398994] [2021-11-25 19:52:32,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:52:32,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:52:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:52:32,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1401 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1398 trivial. 0 not checked. [2021-11-25 19:52:32,497 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:52:32,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643398994] [2021-11-25 19:52:32,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643398994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:52:32,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:52:32,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:52:32,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263098158] [2021-11-25 19:52:32,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:52:32,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:52:32,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:52:32,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:52:32,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:52:32,500 INFO L87 Difference]: Start difference. First operand 22063 states and 30955 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-25 19:52:36,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:52:36,352 INFO L93 Difference]: Finished difference Result 53477 states and 75105 transitions. [2021-11-25 19:52:36,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:52:36,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 263 [2021-11-25 19:52:36,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:52:36,465 INFO L225 Difference]: With dead ends: 53477 [2021-11-25 19:52:36,465 INFO L226 Difference]: Without dead ends: 31547 [2021-11-25 19:52:36,553 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:52:36,554 INFO L933 BasicCegarLoop]: 3819 mSDtfsCounter, 2490 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2490 SdHoareTripleChecker+Valid, 6323 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:52:36,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2490 Valid, 6323 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-25 19:52:36,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31547 states. [2021-11-25 19:52:38,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31547 to 31483. [2021-11-25 19:52:38,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31483 states, 18013 states have (on average 1.2651973574640538) internal successors, (22790), 18863 states have internal predecessors, (22790), 10666 states have call successors, (10666), 2826 states have call predecessors, (10666), 2801 states have return successors, (10668), 10261 states have call predecessors, (10668), 10662 states have call successors, (10668) [2021-11-25 19:52:38,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31483 states to 31483 states and 44124 transitions. [2021-11-25 19:52:38,387 INFO L78 Accepts]: Start accepts. Automaton has 31483 states and 44124 transitions. Word has length 263 [2021-11-25 19:52:38,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:52:38,388 INFO L470 AbstractCegarLoop]: Abstraction has 31483 states and 44124 transitions. [2021-11-25 19:52:38,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-25 19:52:38,389 INFO L276 IsEmpty]: Start isEmpty. Operand 31483 states and 44124 transitions. [2021-11-25 19:52:38,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-11-25 19:52:38,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:52:38,394 INFO L514 BasicCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:52:38,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 19:52:38,394 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:52:38,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:52:38,395 INFO L85 PathProgramCache]: Analyzing trace with hash -533170271, now seen corresponding path program 1 times [2021-11-25 19:52:38,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:52:38,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910689863] [2021-11-25 19:52:38,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:52:38,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:52:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:52:38,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1465 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1455 trivial. 0 not checked. [2021-11-25 19:52:38,611 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:52:38,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910689863] [2021-11-25 19:52:38,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910689863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:52:38,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:52:38,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:52:38,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019099014] [2021-11-25 19:52:38,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:52:38,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:52:38,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:52:38,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:52:38,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:52:38,613 INFO L87 Difference]: Start difference. First operand 31483 states and 44124 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-25 19:52:42,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:52:42,235 INFO L93 Difference]: Finished difference Result 31489 states and 44129 transitions. [2021-11-25 19:52:42,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:52:42,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 272 [2021-11-25 19:52:42,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:52:42,344 INFO L225 Difference]: With dead ends: 31489 [2021-11-25 19:52:42,344 INFO L226 Difference]: Without dead ends: 31487 [2021-11-25 19:52:42,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:52:42,356 INFO L933 BasicCegarLoop]: 2543 mSDtfsCounter, 2882 mSDsluCounter, 5892 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2893 SdHoareTripleChecker+Valid, 7605 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:52:42,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2893 Valid, 7605 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-25 19:52:42,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31487 states. [2021-11-25 19:52:43,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31487 to 31487. [2021-11-25 19:52:43,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31487 states, 18016 states have (on average 1.2651531971580816) internal successors, (22793), 18866 states have internal predecessors, (22793), 10666 states have call successors, (10666), 2827 states have call predecessors, (10666), 2802 states have return successors, (10668), 10261 states have call predecessors, (10668), 10662 states have call successors, (10668) [2021-11-25 19:52:44,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31487 states to 31487 states and 44127 transitions. [2021-11-25 19:52:44,035 INFO L78 Accepts]: Start accepts. Automaton has 31487 states and 44127 transitions. Word has length 272 [2021-11-25 19:52:44,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:52:44,036 INFO L470 AbstractCegarLoop]: Abstraction has 31487 states and 44127 transitions. [2021-11-25 19:52:44,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-25 19:52:44,037 INFO L276 IsEmpty]: Start isEmpty. Operand 31487 states and 44127 transitions. [2021-11-25 19:52:44,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-11-25 19:52:44,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:52:44,042 INFO L514 BasicCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 7, 6, 6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:52:44,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 19:52:44,043 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:52:44,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:52:44,043 INFO L85 PathProgramCache]: Analyzing trace with hash -767953212, now seen corresponding path program 1 times [2021-11-25 19:52:44,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:52:44,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144930045] [2021-11-25 19:52:44,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:52:44,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:52:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:52:44,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1487 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1475 trivial. 0 not checked. [2021-11-25 19:52:44,276 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:52:44,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144930045] [2021-11-25 19:52:44,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144930045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:52:44,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:52:44,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:52:44,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269734271] [2021-11-25 19:52:44,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:52:44,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:52:44,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:52:44,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:52:44,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:52:44,279 INFO L87 Difference]: Start difference. First operand 31487 states and 44127 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-25 19:52:48,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:52:48,975 INFO L93 Difference]: Finished difference Result 31493 states and 44132 transitions. [2021-11-25 19:52:48,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:52:48,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 277 [2021-11-25 19:52:48,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:52:49,085 INFO L225 Difference]: With dead ends: 31493 [2021-11-25 19:52:49,085 INFO L226 Difference]: Without dead ends: 31491 [2021-11-25 19:52:49,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:52:49,102 INFO L933 BasicCegarLoop]: 2543 mSDtfsCounter, 2882 mSDsluCounter, 5892 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2892 SdHoareTripleChecker+Valid, 7605 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:52:49,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2892 Valid, 7605 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-25 19:52:49,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31491 states. [2021-11-25 19:52:50,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31491 to 31491. [2021-11-25 19:52:50,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31491 states, 18019 states have (on average 1.26510905155669) internal successors, (22796), 18869 states have internal predecessors, (22796), 10666 states have call successors, (10666), 2828 states have call predecessors, (10666), 2803 states have return successors, (10668), 10261 states have call predecessors, (10668), 10662 states have call successors, (10668) [2021-11-25 19:52:50,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31491 states to 31491 states and 44130 transitions. [2021-11-25 19:52:50,987 INFO L78 Accepts]: Start accepts. Automaton has 31491 states and 44130 transitions. Word has length 277 [2021-11-25 19:52:50,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:52:50,987 INFO L470 AbstractCegarLoop]: Abstraction has 31491 states and 44130 transitions. [2021-11-25 19:52:50,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-25 19:52:50,987 INFO L276 IsEmpty]: Start isEmpty. Operand 31491 states and 44130 transitions. [2021-11-25 19:52:50,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-25 19:52:50,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:52:50,991 INFO L514 BasicCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 8, 7, 7, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:52:50,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 19:52:50,991 INFO L402 AbstractCegarLoop]: === Iteration 14 === 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)] === [2021-11-25 19:52:50,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:52:50,992 INFO L85 PathProgramCache]: Analyzing trace with hash 731333493, now seen corresponding path program 1 times [2021-11-25 19:52:50,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:52:50,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223666203] [2021-11-25 19:52:50,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:52:50,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:52:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:52:51,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1498 trivial. 0 not checked. [2021-11-25 19:52:51,202 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:52:51,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223666203] [2021-11-25 19:52:51,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223666203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:52:51,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:52:51,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:52:51,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442300974] [2021-11-25 19:52:51,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:52:51,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:52:51,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:52:51,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:52:51,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:52:51,205 INFO L87 Difference]: Start difference. First operand 31491 states and 44130 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-25 19:52:54,054 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:52:57,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:52:57,445 INFO L93 Difference]: Finished difference Result 43433 states and 60520 transitions. [2021-11-25 19:52:57,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:52:57,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 281 [2021-11-25 19:52:57,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:52:57,604 INFO L225 Difference]: With dead ends: 43433 [2021-11-25 19:52:57,604 INFO L226 Difference]: Without dead ends: 43431 [2021-11-25 19:52:57,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:52:57,625 INFO L933 BasicCegarLoop]: 3166 mSDtfsCounter, 1941 mSDsluCounter, 10092 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1950 SdHoareTripleChecker+Valid, 11964 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:52:57,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1950 Valid, 11964 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1760 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-11-25 19:52:57,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43431 states. [2021-11-25 19:52:59,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43431 to 43421. [2021-11-25 19:52:59,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43421 states, 24722 states have (on average 1.2573820888277647) internal successors, (31085), 25918 states have internal predecessors, (31085), 14714 states have call successors, (14714), 4016 states have call predecessors, (14714), 3982 states have return successors, (14712), 14132 states have call predecessors, (14712), 14706 states have call successors, (14712) [2021-11-25 19:52:59,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43421 states to 43421 states and 60511 transitions. [2021-11-25 19:52:59,855 INFO L78 Accepts]: Start accepts. Automaton has 43421 states and 60511 transitions. Word has length 281 [2021-11-25 19:52:59,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:52:59,856 INFO L470 AbstractCegarLoop]: Abstraction has 43421 states and 60511 transitions. [2021-11-25 19:52:59,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-25 19:52:59,856 INFO L276 IsEmpty]: Start isEmpty. Operand 43421 states and 60511 transitions. [2021-11-25 19:52:59,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-25 19:52:59,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:52:59,863 INFO L514 BasicCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 9, 8, 8, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:52:59,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 19:52:59,863 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:52:59,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:52:59,864 INFO L85 PathProgramCache]: Analyzing trace with hash -233663324, now seen corresponding path program 1 times [2021-11-25 19:52:59,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:52:59,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036859660] [2021-11-25 19:52:59,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:52:59,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:53:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:53:00,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1543 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2021-11-25 19:53:00,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:53:00,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036859660] [2021-11-25 19:53:00,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036859660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:53:00,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:53:00,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:53:00,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009636364] [2021-11-25 19:53:00,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:53:00,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:53:00,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:53:00,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:53:00,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:53:00,338 INFO L87 Difference]: Start difference. First operand 43421 states and 60511 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-25 19:53:03,390 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:53:06,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:53:06,907 INFO L93 Difference]: Finished difference Result 43773 states and 60825 transitions. [2021-11-25 19:53:06,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:53:06,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 287 [2021-11-25 19:53:06,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:53:07,041 INFO L225 Difference]: With dead ends: 43773 [2021-11-25 19:53:07,041 INFO L226 Difference]: Without dead ends: 43771 [2021-11-25 19:53:07,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:53:07,055 INFO L933 BasicCegarLoop]: 2548 mSDtfsCounter, 2838 mSDsluCounter, 5973 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2846 SdHoareTripleChecker+Valid, 7683 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:53:07,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2846 Valid, 7683 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1277 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-11-25 19:53:07,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43771 states. [2021-11-25 19:53:09,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43771 to 43769. [2021-11-25 19:53:09,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43769 states, 24916 states have (on average 1.2558596885535398) internal successors, (31291), 26112 states have internal predecessors, (31291), 14766 states have call successors, (14766), 4118 states have call predecessors, (14766), 4084 states have return successors, (14764), 14184 states have call predecessors, (14764), 14758 states have call successors, (14764) [2021-11-25 19:53:09,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43769 states to 43769 states and 60821 transitions. [2021-11-25 19:53:09,341 INFO L78 Accepts]: Start accepts. Automaton has 43769 states and 60821 transitions. Word has length 287 [2021-11-25 19:53:09,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:53:09,342 INFO L470 AbstractCegarLoop]: Abstraction has 43769 states and 60821 transitions. [2021-11-25 19:53:09,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-25 19:53:09,342 INFO L276 IsEmpty]: Start isEmpty. Operand 43769 states and 60821 transitions. [2021-11-25 19:53:09,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-11-25 19:53:09,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:53:09,349 INFO L514 BasicCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 10, 9, 9, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:53:09,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 19:53:09,350 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:53:09,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:53:09,350 INFO L85 PathProgramCache]: Analyzing trace with hash -476491755, now seen corresponding path program 1 times [2021-11-25 19:53:09,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:53:09,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269641704] [2021-11-25 19:53:09,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:53:09,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:53:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:53:09,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1576 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1558 trivial. 0 not checked. [2021-11-25 19:53:09,570 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:53:09,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269641704] [2021-11-25 19:53:09,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269641704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:53:09,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:53:09,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:53:09,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604308213] [2021-11-25 19:53:09,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:53:09,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:53:09,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:53:09,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:53:09,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:53:09,574 INFO L87 Difference]: Start difference. First operand 43769 states and 60821 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-25 19:53:14,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:53:14,554 INFO L93 Difference]: Finished difference Result 43779 states and 60830 transitions. [2021-11-25 19:53:14,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:53:14,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 291 [2021-11-25 19:53:14,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:53:14,769 INFO L225 Difference]: With dead ends: 43779 [2021-11-25 19:53:14,770 INFO L226 Difference]: Without dead ends: 43777 [2021-11-25 19:53:14,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:53:14,791 INFO L933 BasicCegarLoop]: 2543 mSDtfsCounter, 2882 mSDsluCounter, 5892 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2889 SdHoareTripleChecker+Valid, 7605 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:53:14,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2889 Valid, 7605 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-25 19:53:14,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43777 states.