./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.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_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/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_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/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_46d99543-41cb-4497-971c-af6171687214/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 98d50d623f72baafe13ab6a5d1ec3f840fccd437bd559cdde24b5507886949f9 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:17:53,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:17:53,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:17:53,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:17:53,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:17:53,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:17:53,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:17:53,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:17:53,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:17:53,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:17:53,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:17:53,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:17:53,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:17:53,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:17:53,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:17:53,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:17:53,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:17:53,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:17:53,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:17:53,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:17:53,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:17:53,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:17:53,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:17:53,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:17:53,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:17:53,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:17:53,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:17:53,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:17:53,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:17:53,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:17:53,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:17:53,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:17:53,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:17:53,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:17:53,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:17:53,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:17:53,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:17:53,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:17:53,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:17:53,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:17:53,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:17:53,845 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:17:53,894 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:17:53,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:17:53,895 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:17:53,895 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:17:53,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:17:53,897 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:17:53,897 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:17:53,897 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:17:53,897 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:17:53,898 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:17:53,899 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:17:53,899 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:17:53,899 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:17:53,899 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:17:53,900 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:17:53,900 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:17:53,900 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:17:53,900 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:17:53,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:17:53,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:17:53,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:17:53,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:17:53,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:17:53,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:17:53,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:17:53,903 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:17:53,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:17:53,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:17:53,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:17:53,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:17:53,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:17:53,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:17:53,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:17:53,906 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:17:53,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:17:53,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:17:53,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:17:53,907 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:17:53,907 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_46d99543-41cb-4497-971c-af6171687214/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98d50d623f72baafe13ab6a5d1ec3f840fccd437bd559cdde24b5507886949f9 [2021-11-25 20:17:54,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:17:54,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:17:54,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:17:54,237 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:17:54,238 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:17:54,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i [2021-11-25 20:17:54,314 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/data/3aecd8d50/b24b61acd8c3452ebe1110dfdebf7450/FLAG4a91962bb [2021-11-25 20:17:55,377 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:17:55,378 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i [2021-11-25 20:17:55,449 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/data/3aecd8d50/b24b61acd8c3452ebe1110dfdebf7450/FLAG4a91962bb [2021-11-25 20:17:55,698 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/data/3aecd8d50/b24b61acd8c3452ebe1110dfdebf7450 [2021-11-25 20:17:55,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:17:55,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:17:55,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:17:55,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:17:55,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:17:55,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:17:55" (1/1) ... [2021-11-25 20:17:55,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a46a3ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:17:55, skipping insertion in model container [2021-11-25 20:17:55,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:17:55" (1/1) ... [2021-11-25 20:17:55,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:17:55,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:18:00,137 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_46d99543-41cb-4497-971c-af6171687214/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i[515692,515705] [2021-11-25 20:18:00,140 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_46d99543-41cb-4497-971c-af6171687214/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i[515861,515874] [2021-11-25 20:18:00,141 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_46d99543-41cb-4497-971c-af6171687214/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i[516028,516041] [2021-11-25 20:18:00,142 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_46d99543-41cb-4497-971c-af6171687214/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i[516196,516209] [2021-11-25 20:18:00,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:18:00,232 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:18:01,015 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_46d99543-41cb-4497-971c-af6171687214/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i[515692,515705] [2021-11-25 20:18:01,016 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_46d99543-41cb-4497-971c-af6171687214/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i[515861,515874] [2021-11-25 20:18:01,016 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_46d99543-41cb-4497-971c-af6171687214/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i[516028,516041] [2021-11-25 20:18:01,017 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_46d99543-41cb-4497-971c-af6171687214/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i[516196,516209] [2021-11-25 20:18:01,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:18:01,292 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:18:01,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:01 WrapperNode [2021-11-25 20:18:01,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:18:01,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:18:01,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:18:01,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:18:01,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:01" (1/1) ... [2021-11-25 20:18:01,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:01" (1/1) ... [2021-11-25 20:18:02,158 INFO L137 Inliner]: procedures = 394, calls = 6166, calls flagged for inlining = 164, calls inlined = 141, statements flattened = 16285 [2021-11-25 20:18:02,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:18:02,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:18:02,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:18:02,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:18:02,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:01" (1/1) ... [2021-11-25 20:18:02,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:01" (1/1) ... [2021-11-25 20:18:02,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:01" (1/1) ... [2021-11-25 20:18:02,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:01" (1/1) ... [2021-11-25 20:18:02,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:01" (1/1) ... [2021-11-25 20:18:02,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:01" (1/1) ... [2021-11-25 20:18:02,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:01" (1/1) ... [2021-11-25 20:18:02,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:18:02,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:18:02,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:18:02,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:18:02,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:01" (1/1) ... [2021-11-25 20:18:02,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:18:02,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:18:02,782 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:18:02,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:18:02,832 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-25 20:18:02,833 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-25 20:18:02,833 INFO L130 BoogieDeclarations]: Found specification of procedure to_sd [2021-11-25 20:18:02,833 INFO L138 BoogieDeclarations]: Found implementation of procedure to_sd [2021-11-25 20:18:02,833 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_s_tuner [2021-11-25 20:18:02,833 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_s_tuner [2021-11-25 20:18:02,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 20:18:02,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 20:18:02,834 INFO L130 BoogieDeclarations]: Found specification of procedure is_cx2388x [2021-11-25 20:18:02,834 INFO L138 BoogieDeclarations]: Found implementation of procedure is_cx2388x [2021-11-25 20:18:02,834 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_g_tuner [2021-11-25 20:18:02,834 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_g_tuner [2021-11-25 20:18:02,834 INFO L130 BoogieDeclarations]: Found specification of procedure is_cx2583x [2021-11-25 20:18:02,834 INFO L138 BoogieDeclarations]: Found implementation of procedure is_cx2583x [2021-11-25 20:18:02,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 20:18:02,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 20:18:02,835 INFO L130 BoogieDeclarations]: Found specification of procedure to_ir_state [2021-11-25 20:18:02,835 INFO L138 BoogieDeclarations]: Found implementation of procedure to_ir_state [2021-11-25 20:18:02,835 INFO L130 BoogieDeclarations]: Found specification of procedure pulse_width_count_to_ns [2021-11-25 20:18:02,835 INFO L138 BoogieDeclarations]: Found implementation of procedure pulse_width_count_to_ns [2021-11-25 20:18:02,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_53 [2021-11-25 20:18:02,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_53 [2021-11-25 20:18:02,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 20:18:02,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 20:18:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2021-11-25 20:18:02,836 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2021-11-25 20:18:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rx_kfifo_lock_of_cx25840_ir_state [2021-11-25 20:18:02,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rx_kfifo_lock_of_cx25840_ir_state [2021-11-25 20:18:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2021-11-25 20:18:02,836 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2021-11-25 20:18:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 20:18:02,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 20:18:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_g_sliced_fmt [2021-11-25 20:18:02,837 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_g_sliced_fmt [2021-11-25 20:18:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:18:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2021-11-25 20:18:02,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2021-11-25 20:18:02,838 INFO L130 BoogieDeclarations]: Found specification of procedure clock_divider_to_resolution [2021-11-25 20:18:02,838 INFO L138 BoogieDeclarations]: Found implementation of procedure clock_divider_to_resolution [2021-11-25 20:18:02,838 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-25 20:18:02,838 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-25 20:18:02,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 20:18:02,838 INFO L130 BoogieDeclarations]: Found specification of procedure cx25836_initialize [2021-11-25 20:18:02,838 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25836_initialize [2021-11-25 20:18:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_write4 [2021-11-25 20:18:02,839 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_write4 [2021-11-25 20:18:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_s_ext_ctrls [2021-11-25 20:18:02,839 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_s_ext_ctrls [2021-11-25 20:18:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 20:18:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_s_frequency [2021-11-25 20:18:02,839 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_s_frequency [2021-11-25 20:18:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 20:18:02,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 20:18:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_std_setup [2021-11-25 20:18:02,840 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_std_setup [2021-11-25 20:18:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:18:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-11-25 20:18:02,840 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-11-25 20:18:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 20:18:02,840 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 20:18:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure control_tx_modulation_enable [2021-11-25 20:18:02,841 INFO L138 BoogieDeclarations]: Found implementation of procedure control_tx_modulation_enable [2021-11-25 20:18:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure cx23885_initialize [2021-11-25 20:18:02,841 INFO L138 BoogieDeclarations]: Found implementation of procedure cx23885_initialize [2021-11-25 20:18:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_s_raw_fmt [2021-11-25 20:18:02,841 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_s_raw_fmt [2021-11-25 20:18:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_and_or [2021-11-25 20:18:02,842 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_and_or [2021-11-25 20:18:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_s_ctrl [2021-11-25 20:18:02,842 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_s_ctrl [2021-11-25 20:18:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure set_audclk_freq [2021-11-25 20:18:02,842 INFO L138 BoogieDeclarations]: Found implementation of procedure set_audclk_freq [2021-11-25 20:18:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_ir_rx_g_parameters [2021-11-25 20:18:02,842 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_ir_rx_g_parameters [2021-11-25 20:18:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_initialize [2021-11-25 20:18:02,843 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_initialize [2021-11-25 20:18:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_g_input_status [2021-11-25 20:18:02,843 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_g_input_status [2021-11-25 20:18:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure lpf_count_to_ns [2021-11-25 20:18:02,843 INFO L138 BoogieDeclarations]: Found implementation of procedure lpf_count_to_ns [2021-11-25 20:18:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 20:18:02,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 20:18:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_set_audclk_freq [2021-11-25 20:18:02,844 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_set_audclk_freq [2021-11-25 20:18:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:18:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure pulse_width_count_to_us [2021-11-25 20:18:02,844 INFO L138 BoogieDeclarations]: Found implementation of procedure pulse_width_count_to_us [2021-11-25 20:18:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:18:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 20:18:02,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 20:18:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 20:18:02,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 20:18:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:18:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 20:18:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_get_subdevdata [2021-11-25 20:18:02,845 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_get_subdevdata [2021-11-25 20:18:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_decode_vbi_line [2021-11-25 20:18:02,845 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_decode_vbi_line [2021-11-25 20:18:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure pulse_clocks_to_clock_divider [2021-11-25 20:18:02,846 INFO L138 BoogieDeclarations]: Found implementation of procedure pulse_clocks_to_clock_divider [2021-11-25 20:18:02,846 INFO L130 BoogieDeclarations]: Found specification of procedure is_cx231xx [2021-11-25 20:18:02,846 INFO L138 BoogieDeclarations]: Found implementation of procedure is_cx231xx [2021-11-25 20:18:02,846 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2021-11-25 20:18:02,846 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2021-11-25 20:18:02,846 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_probe [2021-11-25 20:18:02,846 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_probe [2021-11-25 20:18:02,846 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-25 20:18:02,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-25 20:18:02,847 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 20:18:02,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 20:18:02,847 INFO L130 BoogieDeclarations]: Found specification of procedure odd_parity [2021-11-25 20:18:02,847 INFO L138 BoogieDeclarations]: Found implementation of procedure odd_parity [2021-11-25 20:18:02,847 INFO L130 BoogieDeclarations]: Found specification of procedure control_rx_enable [2021-11-25 20:18:02,847 INFO L138 BoogieDeclarations]: Found implementation of procedure control_rx_enable [2021-11-25 20:18:02,847 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-25 20:18:02,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-25 20:18:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure filter_rx_s_min_width [2021-11-25 20:18:02,848 INFO L138 BoogieDeclarations]: Found implementation of procedure filter_rx_s_min_width [2021-11-25 20:18:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_ir_tx_shutdown [2021-11-25 20:18:02,848 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_ir_tx_shutdown [2021-11-25 20:18:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-25 20:18:02,848 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-25 20:18:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:18:02,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:18:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_g_ctrl [2021-11-25 20:18:02,849 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_g_ctrl [2021-11-25 20:18:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_ir_tx_s_parameters [2021-11-25 20:18:02,849 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_ir_tx_s_parameters [2021-11-25 20:18:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 20:18:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 20:18:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 20:18:02,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 20:18:02,850 INFO L130 BoogieDeclarations]: Found specification of procedure input_change [2021-11-25 20:18:02,850 INFO L138 BoogieDeclarations]: Found implementation of procedure input_change [2021-11-25 20:18:02,850 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_ir_tx_g_parameters [2021-11-25 20:18:02,850 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_ir_tx_g_parameters [2021-11-25 20:18:02,850 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_querymenu [2021-11-25 20:18:02,850 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_querymenu [2021-11-25 20:18:02,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 20:18:02,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 20:18:02,850 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-25 20:18:02,851 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-25 20:18:02,851 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_ir_probe [2021-11-25 20:18:02,851 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_ir_probe [2021-11-25 20:18:02,851 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-25 20:18:02,851 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-25 20:18:02,851 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_ir_rx_shutdown [2021-11-25 20:18:02,851 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_ir_rx_shutdown [2021-11-25 20:18:02,851 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 20:18:02,852 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 20:18:02,852 INFO L130 BoogieDeclarations]: Found specification of procedure control_tx_enable [2021-11-25 20:18:02,852 INFO L138 BoogieDeclarations]: Found implementation of procedure control_tx_enable [2021-11-25 20:18:02,852 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-25 20:18:02,852 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-25 20:18:02,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 20:18:02,852 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 20:18:02,852 INFO L130 BoogieDeclarations]: Found specification of procedure carrier_freq_to_clock_divider [2021-11-25 20:18:02,853 INFO L138 BoogieDeclarations]: Found implementation of procedure carrier_freq_to_clock_divider [2021-11-25 20:18:02,853 INFO L130 BoogieDeclarations]: Found specification of procedure control_rx_demodulation_enable [2021-11-25 20:18:02,853 INFO L138 BoogieDeclarations]: Found implementation of procedure control_rx_demodulation_enable [2021-11-25 20:18:02,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-25 20:18:02,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-25 20:18:02,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:18:02,853 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 20:18:02,854 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 20:18:02,854 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_write [2021-11-25 20:18:02,854 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_write [2021-11-25 20:18:02,854 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~VOID [2021-11-25 20:18:02,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~VOID [2021-11-25 20:18:02,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:18:02,854 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_s_mbus_fmt [2021-11-25 20:18:02,854 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_s_mbus_fmt [2021-11-25 20:18:02,855 INFO L130 BoogieDeclarations]: Found specification of procedure set_volume [2021-11-25 20:18:02,855 INFO L138 BoogieDeclarations]: Found implementation of procedure set_volume [2021-11-25 20:18:02,855 INFO L130 BoogieDeclarations]: Found specification of procedure cx231xx_initialize [2021-11-25 20:18:02,855 INFO L138 BoogieDeclarations]: Found implementation of procedure cx231xx_initialize [2021-11-25 20:18:02,855 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_g_ext_ctrls [2021-11-25 20:18:02,855 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_g_ext_ctrls [2021-11-25 20:18:02,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:18:02,855 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-25 20:18:02,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-25 20:18:02,856 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 20:18:02,856 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 20:18:02,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 20:18:02,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 20:18:02,856 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 20:18:02,856 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 20:18:02,857 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_try_ext_ctrls [2021-11-25 20:18:02,857 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_try_ext_ctrls [2021-11-25 20:18:02,857 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata___0 [2021-11-25 20:18:02,857 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata___0 [2021-11-25 20:18:02,857 INFO L130 BoogieDeclarations]: Found specification of procedure irqenable_tx [2021-11-25 20:18:02,857 INFO L138 BoogieDeclarations]: Found implementation of procedure irqenable_tx [2021-11-25 20:18:02,857 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_queryctrl [2021-11-25 20:18:02,857 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_queryctrl [2021-11-25 20:18:02,858 INFO L130 BoogieDeclarations]: Found specification of procedure clock_divider_to_freq [2021-11-25 20:18:02,858 INFO L138 BoogieDeclarations]: Found implementation of procedure clock_divider_to_freq [2021-11-25 20:18:02,858 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_g_std [2021-11-25 20:18:02,858 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_g_std [2021-11-25 20:18:02,858 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_ir_rx_s_parameters [2021-11-25 20:18:02,858 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_ir_rx_s_parameters [2021-11-25 20:18:02,858 INFO L130 BoogieDeclarations]: Found specification of procedure to_state [2021-11-25 20:18:02,858 INFO L138 BoogieDeclarations]: Found implementation of procedure to_state [2021-11-25 20:18:02,859 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_g_register [2021-11-25 20:18:02,859 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_g_register [2021-11-25 20:18:02,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:18:02,859 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_s_register [2021-11-25 20:18:02,859 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_s_register [2021-11-25 20:18:02,859 INFO L130 BoogieDeclarations]: Found specification of procedure set_input [2021-11-25 20:18:02,859 INFO L138 BoogieDeclarations]: Found implementation of procedure set_input [2021-11-25 20:18:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure cx23888_std_setup [2021-11-25 20:18:02,860 INFO L138 BoogieDeclarations]: Found implementation of procedure cx23888_std_setup [2021-11-25 20:18:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2021-11-25 20:18:02,860 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2021-11-25 20:18:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure irqenable_rx [2021-11-25 20:18:02,860 INFO L138 BoogieDeclarations]: Found implementation of procedure irqenable_rx [2021-11-25 20:18:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_and_or4 [2021-11-25 20:18:02,860 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_and_or4 [2021-11-25 20:18:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_read [2021-11-25 20:18:02,861 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_read [2021-11-25 20:18:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_s_sliced_fmt [2021-11-25 20:18:02,861 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_s_sliced_fmt [2021-11-25 20:18:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_master_send [2021-11-25 20:18:02,861 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_master_send [2021-11-25 20:18:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_adapter_id [2021-11-25 20:18:02,861 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_adapter_id [2021-11-25 20:18:02,862 INFO L130 BoogieDeclarations]: Found specification of procedure clock_divider_to_carrier_freq [2021-11-25 20:18:02,862 INFO L138 BoogieDeclarations]: Found implementation of procedure clock_divider_to_carrier_freq [2021-11-25 20:18:02,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 20:18:02,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 20:18:02,862 INFO L130 BoogieDeclarations]: Found specification of procedure control_rx_s_edge_detection [2021-11-25 20:18:02,862 INFO L138 BoogieDeclarations]: Found implementation of procedure control_rx_s_edge_detection [2021-11-25 20:18:02,862 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-25 20:18:02,862 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-25 20:18:02,863 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_read4 [2021-11-25 20:18:02,863 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_read4 [2021-11-25 20:18:02,863 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 20:18:02,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 20:18:02,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:18:02,863 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-11-25 20:18:02,863 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-11-25 20:18:02,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 20:18:02,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 20:18:02,864 INFO L130 BoogieDeclarations]: Found specification of procedure is_cx23885 [2021-11-25 20:18:02,864 INFO L138 BoogieDeclarations]: Found implementation of procedure is_cx23885 [2021-11-25 20:18:02,864 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_pulse_clocks [2021-11-25 20:18:02,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_pulse_clocks [2021-11-25 20:18:02,864 INFO L130 BoogieDeclarations]: Found specification of procedure is_cx23888 [2021-11-25 20:18:02,864 INFO L138 BoogieDeclarations]: Found implementation of procedure is_cx23888 [2021-11-25 20:18:02,864 INFO L130 BoogieDeclarations]: Found specification of procedure is_cx23887 [2021-11-25 20:18:02,864 INFO L138 BoogieDeclarations]: Found implementation of procedure is_cx23887 [2021-11-25 20:18:04,484 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:18:04,492 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:18:07,553 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 20:19:27,970 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:19:33,615 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:19:33,616 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 20:19:33,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:19:33 BoogieIcfgContainer [2021-11-25 20:19:33,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:19:33,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:19:33,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:19:33,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:19:33,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:17:55" (1/3) ... [2021-11-25 20:19:33,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e82cb06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:19:33, skipping insertion in model container [2021-11-25 20:19:33,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:01" (2/3) ... [2021-11-25 20:19:33,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e82cb06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:19:33, skipping insertion in model container [2021-11-25 20:19:33,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:19:33" (3/3) ... [2021-11-25 20:19:33,638 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i [2021-11-25 20:19:33,645 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:19:33,645 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 20:19:33,753 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:19:33,764 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 20:19:33,764 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 20:19:33,956 INFO L276 IsEmpty]: Start isEmpty. Operand has 7683 states, 4081 states have (on average 1.1163930409213427) internal successors, (4556), 4108 states have internal predecessors, (4556), 3482 states have call successors, (3482), 117 states have call predecessors, (3482), 116 states have return successors, (3479), 3467 states have call predecessors, (3479), 3479 states have call successors, (3479) [2021-11-25 20:19:33,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 20:19:33,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:33,964 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:33,965 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 20:19:33,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:33,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1545103771, now seen corresponding path program 1 times [2021-11-25 20:19:33,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:33,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623099336] [2021-11-25 20:19:33,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:33,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:19:35,027 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:35,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623099336] [2021-11-25 20:19:35,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623099336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:35,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:35,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:19:35,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611728603] [2021-11-25 20:19:35,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:35,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:19:35,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:35,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:19:35,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:19:35,123 INFO L87 Difference]: Start difference. First operand has 7683 states, 4081 states have (on average 1.1163930409213427) internal successors, (4556), 4108 states have internal predecessors, (4556), 3482 states have call successors, (3482), 117 states have call predecessors, (3482), 116 states have return successors, (3479), 3467 states have call predecessors, (3479), 3479 states have call successors, (3479) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 20:19:38,829 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:42,808 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:19:45,020 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:19:47,255 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:19:49,447 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:19:51,600 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:19:54,452 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:19:56,723 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:19:58,969 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:20:01,765 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:20:04,270 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:05,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:20:05,406 INFO L93 Difference]: Finished difference Result 16046 states and 24045 transitions. [2021-11-25 20:20:05,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:20:05,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2021-11-25 20:20:05,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:20:05,560 INFO L225 Difference]: With dead ends: 16046 [2021-11-25 20:20:05,561 INFO L226 Difference]: Without dead ends: 8373 [2021-11-25 20:20:05,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:20:05,667 INFO L933 BasicCegarLoop]: 11454 mSDtfsCounter, 3715 mSDsluCounter, 32264 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 1 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3746 SdHoareTripleChecker+Valid, 43033 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:20:05,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3746 Valid, 43033 Invalid, 1019 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 1007 Invalid, 11 Unknown, 0 Unchecked, 29.2s Time] [2021-11-25 20:20:05,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8373 states. [2021-11-25 20:20:15,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8373 to 8356. [2021-11-25 20:20:15,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8356 states, 4467 states have (on average 1.1240205954779494) internal successors, (5021), 4497 states have internal predecessors, (5021), 3734 states have call successors, (3734), 153 states have call predecessors, (3734), 152 states have return successors, (3731), 3717 states have call predecessors, (3731), 3731 states have call successors, (3731) [2021-11-25 20:20:15,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8356 states to 8356 states and 12486 transitions. [2021-11-25 20:20:15,251 INFO L78 Accepts]: Start accepts. Automaton has 8356 states and 12486 transitions. Word has length 35 [2021-11-25 20:20:15,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:20:15,252 INFO L470 AbstractCegarLoop]: Abstraction has 8356 states and 12486 transitions. [2021-11-25 20:20:15,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 20:20:15,254 INFO L276 IsEmpty]: Start isEmpty. Operand 8356 states and 12486 transitions. [2021-11-25 20:20:15,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-25 20:20:15,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:20:15,261 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:20:15,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:20:15,262 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:20:15,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:20:15,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1320348215, now seen corresponding path program 1 times [2021-11-25 20:20:15,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:20:15,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803292065] [2021-11-25 20:20:15,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:20:15,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:20:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:20:15,781 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:20:15,781 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:20:15,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803292065] [2021-11-25 20:20:15,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803292065] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:20:15,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:20:15,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:20:15,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105705936] [2021-11-25 20:20:15,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:20:15,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:20:15,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:20:15,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:20:15,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:20:15,785 INFO L87 Difference]: Start difference. First operand 8356 states and 12486 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 20:20:19,607 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:23,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:20:26,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:20:28,197 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:20:30,366 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:20:33,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:20:35,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:20:37,736 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:20:39,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:20:39,618 INFO L93 Difference]: Finished difference Result 8393 states and 12520 transitions. [2021-11-25 20:20:39,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:20:39,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 40 [2021-11-25 20:20:39,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:20:39,723 INFO L225 Difference]: With dead ends: 8393 [2021-11-25 20:20:39,724 INFO L226 Difference]: Without dead ends: 8391 [2021-11-25 20:20:39,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:20:39,737 INFO L933 BasicCegarLoop]: 11229 mSDtfsCounter, 11445 mSDsluCounter, 23243 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11469 SdHoareTripleChecker+Valid, 33820 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:20:39,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11469 Valid, 33820 Invalid, 986 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 977 Invalid, 8 Unknown, 0 Unchecked, 23.1s Time] [2021-11-25 20:20:39,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8391 states. [2021-11-25 20:20:48,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8391 to 8374. [2021-11-25 20:20:49,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8374 states, 4477 states have (on average 1.1237435782890328) internal successors, (5031), 4507 states have internal predecessors, (5031), 3736 states have call successors, (3736), 159 states have call predecessors, (3736), 158 states have return successors, (3733), 3719 states have call predecessors, (3733), 3733 states have call successors, (3733) [2021-11-25 20:20:49,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8374 states to 8374 states and 12500 transitions. [2021-11-25 20:20:49,085 INFO L78 Accepts]: Start accepts. Automaton has 8374 states and 12500 transitions. Word has length 40 [2021-11-25 20:20:49,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:20:49,087 INFO L470 AbstractCegarLoop]: Abstraction has 8374 states and 12500 transitions. [2021-11-25 20:20:49,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 20:20:49,088 INFO L276 IsEmpty]: Start isEmpty. Operand 8374 states and 12500 transitions. [2021-11-25 20:20:49,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-25 20:20:49,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:20:49,100 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:20:49,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:20:49,101 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:20:49,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:20:49,102 INFO L85 PathProgramCache]: Analyzing trace with hash -586089589, now seen corresponding path program 1 times [2021-11-25 20:20:49,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:20:49,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856399736] [2021-11-25 20:20:49,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:20:49,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:20:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:20:49,611 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-25 20:20:49,612 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:20:49,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856399736] [2021-11-25 20:20:49,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856399736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:20:49,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:20:49,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:20:49,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983305745] [2021-11-25 20:20:49,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:20:49,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:20:49,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:20:49,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:20:49,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:20:49,615 INFO L87 Difference]: Start difference. First operand 8374 states and 12500 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 20:20:53,284 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:57,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:20:59,574 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:21:01,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:21:03,841 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:21:06,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:21:09,136 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:21:11,304 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:21:13,863 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:21:14,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:14,820 INFO L93 Difference]: Finished difference Result 8409 states and 12534 transitions. [2021-11-25 20:21:14,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:21:14,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 51 [2021-11-25 20:21:14,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:14,927 INFO L225 Difference]: With dead ends: 8409 [2021-11-25 20:21:14,927 INFO L226 Difference]: Without dead ends: 8407 [2021-11-25 20:21:14,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:21:14,940 INFO L933 BasicCegarLoop]: 11234 mSDtfsCounter, 11449 mSDsluCounter, 23257 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11471 SdHoareTripleChecker+Valid, 33835 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:14,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11471 Valid, 33835 Invalid, 990 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 980 Invalid, 9 Unknown, 0 Unchecked, 24.7s Time] [2021-11-25 20:21:14,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8407 states. [2021-11-25 20:21:22,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8407 to 8392. [2021-11-25 20:21:22,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8392 states, 4487 states have (on average 1.1234677958546913) internal successors, (5041), 4517 states have internal predecessors, (5041), 3739 states have call successors, (3739), 164 states have call predecessors, (3739), 163 states have return successors, (3736), 3722 states have call predecessors, (3736), 3736 states have call successors, (3736) [2021-11-25 20:21:22,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8392 states to 8392 states and 12516 transitions. [2021-11-25 20:21:22,525 INFO L78 Accepts]: Start accepts. Automaton has 8392 states and 12516 transitions. Word has length 51 [2021-11-25 20:21:22,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:22,526 INFO L470 AbstractCegarLoop]: Abstraction has 8392 states and 12516 transitions. [2021-11-25 20:21:22,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 20:21:22,526 INFO L276 IsEmpty]: Start isEmpty. Operand 8392 states and 12516 transitions. [2021-11-25 20:21:22,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-25 20:21:22,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:22,530 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:21:22,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:21:22,531 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:21:22,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:22,531 INFO L85 PathProgramCache]: Analyzing trace with hash 28507217, now seen corresponding path program 1 times [2021-11-25 20:21:22,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:22,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183606799] [2021-11-25 20:21:22,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:22,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:22,989 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-25 20:21:22,989 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:22,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183606799] [2021-11-25 20:21:22,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183606799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:22,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:22,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:21:22,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831621629] [2021-11-25 20:21:22,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:22,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:21:22,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:22,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:21:22,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:21:22,992 INFO L87 Difference]: Start difference. First operand 8392 states and 12516 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-25 20:21:26,577 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:30,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:21:32,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:21:34,988 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:21:37,124 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:21:39,271 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:21:41,437 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:21:44,427 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:21:46,692 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:21:49,201 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:21:51,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:52,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:52,474 INFO L93 Difference]: Finished difference Result 8419 states and 12542 transitions. [2021-11-25 20:21:52,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:21:52,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 56 [2021-11-25 20:21:52,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:52,544 INFO L225 Difference]: With dead ends: 8419 [2021-11-25 20:21:52,544 INFO L226 Difference]: Without dead ends: 8417 [2021-11-25 20:21:52,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:21:52,554 INFO L933 BasicCegarLoop]: 11461 mSDtfsCounter, 3710 mSDsluCounter, 32277 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 1 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3734 SdHoareTripleChecker+Valid, 43044 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:52,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3734 Valid, 43044 Invalid, 1030 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1018 Invalid, 11 Unknown, 0 Unchecked, 29.0s Time] [2021-11-25 20:21:52,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8417 states. [2021-11-25 20:22:00,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8417 to 8402. [2021-11-25 20:22:00,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8402 states, 4493 states have (on average 1.1233029156465613) internal successors, (5047), 4523 states have internal predecessors, (5047), 3740 states have call successors, (3740), 167 states have call predecessors, (3740), 166 states have return successors, (3737), 3723 states have call predecessors, (3737), 3737 states have call successors, (3737) [2021-11-25 20:22:00,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8402 states to 8402 states and 12524 transitions. [2021-11-25 20:22:00,391 INFO L78 Accepts]: Start accepts. Automaton has 8402 states and 12524 transitions. Word has length 56 [2021-11-25 20:22:00,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:00,392 INFO L470 AbstractCegarLoop]: Abstraction has 8402 states and 12524 transitions. [2021-11-25 20:22:00,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-25 20:22:00,393 INFO L276 IsEmpty]: Start isEmpty. Operand 8402 states and 12524 transitions. [2021-11-25 20:22:00,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-25 20:22:00,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:00,395 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:22:00,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:22:00,396 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:22:00,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:00,397 INFO L85 PathProgramCache]: Analyzing trace with hash -630924187, now seen corresponding path program 1 times [2021-11-25 20:22:00,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:00,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736902699] [2021-11-25 20:22:00,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:00,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:00,814 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 20:22:00,814 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:00,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736902699] [2021-11-25 20:22:00,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736902699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:00,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:00,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:22:00,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119784647] [2021-11-25 20:22:00,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:00,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:22:00,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:00,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:22:00,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:22:00,817 INFO L87 Difference]: Start difference. First operand 8402 states and 12524 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-25 20:22:04,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:08,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:22:10,313 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:22:12,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:22:14,716 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:22:17,398 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:22:19,542 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:22:21,713 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:22:23,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:23,221 INFO L93 Difference]: Finished difference Result 8449 states and 12564 transitions. [2021-11-25 20:22:23,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:22:23,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 55 [2021-11-25 20:22:23,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:23,273 INFO L225 Difference]: With dead ends: 8449 [2021-11-25 20:22:23,274 INFO L226 Difference]: Without dead ends: 8447 [2021-11-25 20:22:23,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:22:23,284 INFO L933 BasicCegarLoop]: 11237 mSDtfsCounter, 11451 mSDsluCounter, 23210 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11471 SdHoareTripleChecker+Valid, 33798 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:23,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11471 Valid, 33798 Invalid, 984 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 975 Invalid, 8 Unknown, 0 Unchecked, 22.0s Time] [2021-11-25 20:22:23,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8447 states. [2021-11-25 20:22:31,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8447 to 8434. [2021-11-25 20:22:31,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8434 states, 4510 states have (on average 1.1228381374722838) internal successors, (5064), 4540 states have internal predecessors, (5064), 3744 states have call successors, (3744), 178 states have call predecessors, (3744), 177 states have return successors, (3741), 3727 states have call predecessors, (3741), 3741 states have call successors, (3741) [2021-11-25 20:22:31,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8434 states to 8434 states and 12549 transitions. [2021-11-25 20:22:31,743 INFO L78 Accepts]: Start accepts. Automaton has 8434 states and 12549 transitions. Word has length 55 [2021-11-25 20:22:31,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:31,743 INFO L470 AbstractCegarLoop]: Abstraction has 8434 states and 12549 transitions. [2021-11-25 20:22:31,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-25 20:22:31,744 INFO L276 IsEmpty]: Start isEmpty. Operand 8434 states and 12549 transitions. [2021-11-25 20:22:31,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-25 20:22:31,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:31,747 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:22:31,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:22:31,748 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 20:22:31,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:31,749 INFO L85 PathProgramCache]: Analyzing trace with hash 302367543, now seen corresponding path program 1 times [2021-11-25 20:22:31,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:31,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599247287] [2021-11-25 20:22:31,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:31,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:32,207 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-25 20:22:32,207 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:32,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599247287] [2021-11-25 20:22:32,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599247287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:32,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:32,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:22:32,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638169141] [2021-11-25 20:22:32,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:32,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:22:32,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:32,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:22:32,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:22:32,210 INFO L87 Difference]: Start difference. First operand 8434 states and 12549 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-25 20:22:35,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:40,270 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:22:42,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:22:44,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:22:46,841 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:22:49,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:22:51,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:22:53,886 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:22:56,671 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:22:57,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:57,532 INFO L93 Difference]: Finished difference Result 8453 states and 12567 transitions. [2021-11-25 20:22:57,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:22:57,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 60 [2021-11-25 20:22:57,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:57,596 INFO L225 Difference]: With dead ends: 8453 [2021-11-25 20:22:57,597 INFO L226 Difference]: Without dead ends: 8451 [2021-11-25 20:22:57,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:22:57,607 INFO L933 BasicCegarLoop]: 11235 mSDtfsCounter, 11448 mSDsluCounter, 23204 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11469 SdHoareTripleChecker+Valid, 33792 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:57,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11469 Valid, 33792 Invalid, 982 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 972 Invalid, 9 Unknown, 0 Unchecked, 24.9s Time] [2021-11-25 20:22:57,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8451 states. [2021-11-25 20:23:05,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8451 to 8438. [2021-11-25 20:23:05,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8438 states, 4513 states have (on average 1.122756481276313) internal successors, (5067), 4543 states have internal predecessors, (5067), 3744 states have call successors, (3744), 179 states have call predecessors, (3744), 178 states have return successors, (3741), 3727 states have call predecessors, (3741), 3741 states have call successors, (3741) [2021-11-25 20:23:05,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8438 states to 8438 states and 12552 transitions. [2021-11-25 20:23:05,952 INFO L78 Accepts]: Start accepts. Automaton has 8438 states and 12552 transitions. Word has length 60 [2021-11-25 20:23:05,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:23:05,952 INFO L470 AbstractCegarLoop]: Abstraction has 8438 states and 12552 transitions. [2021-11-25 20:23:05,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-25 20:23:05,953 INFO L276 IsEmpty]: Start isEmpty. Operand 8438 states and 12552 transitions. [2021-11-25 20:23:05,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 20:23:05,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:23:05,955 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:23:05,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:23:05,955 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 20:23:05,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:23:05,956 INFO L85 PathProgramCache]: Analyzing trace with hash 2138793829, now seen corresponding path program 1 times [2021-11-25 20:23:05,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:23:05,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227708752] [2021-11-25 20:23:05,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:05,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:23:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:06,333 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-25 20:23:06,333 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:23:06,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227708752] [2021-11-25 20:23:06,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227708752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:23:06,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:23:06,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:23:06,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658317378] [2021-11-25 20:23:06,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:23:06,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:23:06,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:23:06,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:23:06,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:23:06,336 INFO L87 Difference]: Start difference. First operand 8438 states and 12552 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-25 20:23:10,142 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:13,962 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:23:16,222 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:23:18,417 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:23:20,584 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:23:22,765 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:23:25,670 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:23:27,885 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:23:31,005 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:23:33,220 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:23:37,144 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:37,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:23:37,667 INFO L93 Difference]: Finished difference Result 16645 states and 24845 transitions. [2021-11-25 20:23:37,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:23:37,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 65 [2021-11-25 20:23:37,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:23:37,799 INFO L225 Difference]: With dead ends: 16645 [2021-11-25 20:23:37,800 INFO L226 Difference]: Without dead ends: 16641 [2021-11-25 20:23:37,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:23:37,819 INFO L933 BasicCegarLoop]: 14663 mSDtfsCounter, 11414 mSDsluCounter, 41380 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 3 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11433 SdHoareTripleChecker+Valid, 55115 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:23:37,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11433 Valid, 55115 Invalid, 1271 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1257 Invalid, 11 Unknown, 0 Unchecked, 30.5s Time] [2021-11-25 20:23:37,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16641 states. [2021-11-25 20:23:53,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16641 to 16628. [2021-11-25 20:23:53,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16628 states, 8893 states have (on average 1.1226807601484314) internal successors, (9984), 8951 states have internal predecessors, (9984), 7417 states have call successors, (7417), 319 states have call predecessors, (7417), 315 states have return successors, (7429), 7377 states have call predecessors, (7429), 7411 states have call successors, (7429) [2021-11-25 20:23:53,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16628 states to 16628 states and 24830 transitions. [2021-11-25 20:23:53,515 INFO L78 Accepts]: Start accepts. Automaton has 16628 states and 24830 transitions. Word has length 65 [2021-11-25 20:23:53,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:23:53,516 INFO L470 AbstractCegarLoop]: Abstraction has 16628 states and 24830 transitions. [2021-11-25 20:23:53,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-25 20:23:53,516 INFO L276 IsEmpty]: Start isEmpty. Operand 16628 states and 24830 transitions. [2021-11-25 20:23:53,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-25 20:23:53,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:23:53,520 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:23:53,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:23:53,521 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 20:23:53,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:23:53,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1552435127, now seen corresponding path program 1 times [2021-11-25 20:23:53,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:23:53,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147450738] [2021-11-25 20:23:53,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:53,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:23:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:53,919 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-25 20:23:53,919 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:23:53,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147450738] [2021-11-25 20:23:53,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147450738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:23:53,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:23:53,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:23:53,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548092350] [2021-11-25 20:23:53,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:23:53,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:23:53,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:23:53,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:23:53,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:23:53,922 INFO L87 Difference]: Start difference. First operand 16628 states and 24830 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-25 20:23:57,982 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:01,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:24:04,128 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:24:06,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:24:08,445 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:24:10,721 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:24:13,554 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:24:15,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:24:17,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:24:21,014 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:22,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:22,122 INFO L93 Difference]: Finished difference Result 16654 states and 24858 transitions. [2021-11-25 20:24:22,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:24:22,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2021-11-25 20:24:22,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:22,232 INFO L225 Difference]: With dead ends: 16654 [2021-11-25 20:24:22,233 INFO L226 Difference]: Without dead ends: 16521 [2021-11-25 20:24:22,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:24:22,245 INFO L933 BasicCegarLoop]: 11476 mSDtfsCounter, 3706 mSDsluCounter, 32311 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3725 SdHoareTripleChecker+Valid, 43091 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:22,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3725 Valid, 43091 Invalid, 1030 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1019 Invalid, 10 Unknown, 0 Unchecked, 27.3s Time] [2021-11-25 20:24:22,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16521 states. [2021-11-25 20:24:38,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16521 to 16512. [2021-11-25 20:24:38,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16512 states, 8824 states have (on average 1.1216001813236627) internal successors, (9897), 8880 states have internal predecessors, (9897), 7376 states have call successors, (7376), 309 states have call predecessors, (7376), 309 states have return successors, (7397), 7341 states have call predecessors, (7397), 7373 states have call successors, (7397) [2021-11-25 20:24:38,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16512 states to 16512 states and 24670 transitions. [2021-11-25 20:24:38,847 INFO L78 Accepts]: Start accepts. Automaton has 16512 states and 24670 transitions. Word has length 70 [2021-11-25 20:24:38,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:38,848 INFO L470 AbstractCegarLoop]: Abstraction has 16512 states and 24670 transitions. [2021-11-25 20:24:38,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-25 20:24:38,848 INFO L276 IsEmpty]: Start isEmpty. Operand 16512 states and 24670 transitions. [2021-11-25 20:24:38,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-25 20:24:38,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:38,865 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:38,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:24:38,865 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:24:38,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:38,866 INFO L85 PathProgramCache]: Analyzing trace with hash -840837454, now seen corresponding path program 1 times [2021-11-25 20:24:38,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:38,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975254006] [2021-11-25 20:24:38,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:38,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:39,583 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-11-25 20:24:39,584 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:39,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975254006] [2021-11-25 20:24:39,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975254006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:39,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:39,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:24:39,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550111484] [2021-11-25 20:24:39,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:39,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:24:39,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:39,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:24:39,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:24:39,586 INFO L87 Difference]: Start difference. First operand 16512 states and 24670 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 20:24:43,397 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:47,252 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:24:49,546 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:24:51,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:24:53,850 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:24:56,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:24:58,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:25:00,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:25:03,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:25:07,309 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:25:10,506 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:25:12,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:25:13,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:25:13,381 INFO L93 Difference]: Finished difference Result 16598 states and 24761 transitions. [2021-11-25 20:25:13,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:25:13,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2021-11-25 20:25:13,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:25:13,498 INFO L225 Difference]: With dead ends: 16598 [2021-11-25 20:25:13,498 INFO L226 Difference]: Without dead ends: 16596 [2021-11-25 20:25:13,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:25:13,516 INFO L933 BasicCegarLoop]: 14614 mSDtfsCounter, 11238 mSDsluCounter, 41295 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 2 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11254 SdHoareTripleChecker+Valid, 54979 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:25:13,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11254 Valid, 54979 Invalid, 1262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1249 Invalid, 11 Unknown, 0 Unchecked, 33.0s Time] [2021-11-25 20:25:13,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16596 states. [2021-11-25 20:25:30,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16596 to 16582. [2021-11-25 20:25:30,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16582 states, 8861 states have (on average 1.1213181356506037) internal successors, (9936), 8918 states have internal predecessors, (9936), 7395 states have call successors, (7395), 324 states have call predecessors, (7395), 323 states have return successors, (7412), 7359 states have call predecessors, (7412), 7392 states have call successors, (7412) [2021-11-25 20:25:31,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16582 states to 16582 states and 24743 transitions. [2021-11-25 20:25:31,103 INFO L78 Accepts]: Start accepts. Automaton has 16582 states and 24743 transitions. Word has length 133 [2021-11-25 20:25:31,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:25:31,105 INFO L470 AbstractCegarLoop]: Abstraction has 16582 states and 24743 transitions. [2021-11-25 20:25:31,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 20:25:31,106 INFO L276 IsEmpty]: Start isEmpty. Operand 16582 states and 24743 transitions. [2021-11-25 20:25:31,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-25 20:25:31,119 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:25:31,119 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:31,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:25:31,120 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:25:31,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:25:31,121 INFO L85 PathProgramCache]: Analyzing trace with hash -403902158, now seen corresponding path program 1 times [2021-11-25 20:25:31,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:25:31,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254100643] [2021-11-25 20:25:31,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:25:31,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:25:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:25:31,598 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-11-25 20:25:31,598 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:25:31,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254100643] [2021-11-25 20:25:31,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254100643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:25:31,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:25:31,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:25:31,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577086921] [2021-11-25 20:25:31,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:25:31,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:25:31,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:25:31,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:25:31,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:25:31,601 INFO L87 Difference]: Start difference. First operand 16582 states and 24743 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:25:36,033 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:25:40,604 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:25:42,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:25:44,965 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:25:47,250 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:25:49,426 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:25:52,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:25:55,698 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:25:57,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:25:57,196 INFO L93 Difference]: Finished difference Result 16588 states and 24747 transitions. [2021-11-25 20:25:57,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:25:57,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 154 [2021-11-25 20:25:57,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:25:57,311 INFO L225 Difference]: With dead ends: 16588 [2021-11-25 20:25:57,311 INFO L226 Difference]: Without dead ends: 16586 [2021-11-25 20:25:57,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:25:57,330 INFO L933 BasicCegarLoop]: 11178 mSDtfsCounter, 32 mSDsluCounter, 34436 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 44683 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:25:57,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 44683 Invalid, 1257 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1249 Invalid, 8 Unknown, 0 Unchecked, 24.9s Time] [2021-11-25 20:25:57,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16586 states. [2021-11-25 20:26:14,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16586 to 16586. [2021-11-25 20:26:14,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16586 states, 8864 states have (on average 1.1210514440433212) internal successors, (9937), 8920 states have internal predecessors, (9937), 7395 states have call successors, (7395), 326 states have call predecessors, (7395), 325 states have return successors, (7412), 7359 states have call predecessors, (7412), 7392 states have call successors, (7412) [2021-11-25 20:26:14,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16586 states to 16586 states and 24744 transitions. [2021-11-25 20:26:14,431 INFO L78 Accepts]: Start accepts. Automaton has 16586 states and 24744 transitions. Word has length 154 [2021-11-25 20:26:14,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:14,432 INFO L470 AbstractCegarLoop]: Abstraction has 16586 states and 24744 transitions. [2021-11-25 20:26:14,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:26:14,432 INFO L276 IsEmpty]: Start isEmpty. Operand 16586 states and 24744 transitions. [2021-11-25 20:26:14,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-11-25 20:26:14,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:14,464 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:14,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:26:14,465 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 20:26:14,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:14,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1673683112, now seen corresponding path program 1 times [2021-11-25 20:26:14,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:14,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179476221] [2021-11-25 20:26:14,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:14,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:14,859 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:26:14,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1739487042] [2021-11-25 20:26:14,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:14,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:14,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:26:14,867 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:26:14,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:26:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:17,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 7269 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 20:26:17,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:26:21,244 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2021-11-25 20:26:21,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:26:21,245 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:21,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179476221] [2021-11-25 20:26:21,245 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:26:21,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739487042] [2021-11-25 20:26:21,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739487042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:21,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:26:21,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:26:21,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751930777] [2021-11-25 20:26:21,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:21,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:26:21,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:21,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:26:21,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:26:21,248 INFO L87 Difference]: Start difference. First operand 16586 states and 24744 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2021-11-25 20:26:24,867 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:26:28,719 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:26:31,044 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:26:33,187 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:26:35,355 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:26:38,587 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:26:40,716 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:26:42,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:26:44,300 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:26:46,447 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:26:49,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:26:50,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:50,787 INFO L93 Difference]: Finished difference Result 16596 states and 24754 transitions. [2021-11-25 20:26:50,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:26:50,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 293 [2021-11-25 20:26:50,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:50,902 INFO L225 Difference]: With dead ends: 16596 [2021-11-25 20:26:50,902 INFO L226 Difference]: Without dead ends: 16594 [2021-11-25 20:26:50,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:26:50,922 INFO L933 BasicCegarLoop]: 11202 mSDtfsCounter, 11269 mSDsluCounter, 23141 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11278 SdHoareTripleChecker+Valid, 33691 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:50,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11278 Valid, 33691 Invalid, 980 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 969 Invalid, 10 Unknown, 0 Unchecked, 28.8s Time] [2021-11-25 20:26:50,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16594 states. [2021-11-25 20:27:07,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16594 to 16588. [2021-11-25 20:27:07,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16588 states, 8865 states have (on average 1.1208121827411168) internal successors, (9936), 8920 states have internal predecessors, (9936), 7395 states have call successors, (7395), 328 states have call predecessors, (7395), 327 states have return successors, (7412), 7359 states have call predecessors, (7412), 7392 states have call successors, (7412) [2021-11-25 20:27:07,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16588 states to 16588 states and 24743 transitions. [2021-11-25 20:27:07,761 INFO L78 Accepts]: Start accepts. Automaton has 16588 states and 24743 transitions. Word has length 293 [2021-11-25 20:27:07,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:27:07,761 INFO L470 AbstractCegarLoop]: Abstraction has 16588 states and 24743 transitions. [2021-11-25 20:27:07,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2021-11-25 20:27:07,762 INFO L276 IsEmpty]: Start isEmpty. Operand 16588 states and 24743 transitions. [2021-11-25 20:27:07,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2021-11-25 20:27:07,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:27:07,853 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 9, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:27:07,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:27:08,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:27:08,081 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 20:27:08,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:27:08,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1431535903, now seen corresponding path program 1 times [2021-11-25 20:27:08,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:27:08,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052409068] [2021-11-25 20:27:08,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:27:08,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:27:08,638 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:27:08,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [490957017] [2021-11-25 20:27:08,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:27:08,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:27:08,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:27:08,641 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:27:08,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:27:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:27:12,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 9732 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:27:12,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:27:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 945 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-11-25 20:27:14,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:27:14,799 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:27:14,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052409068] [2021-11-25 20:27:14,799 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:27:14,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490957017] [2021-11-25 20:27:14,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490957017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:27:14,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:27:14,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:27:14,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976750303] [2021-11-25 20:27:14,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:27:14,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:27:14,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:27:14,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:27:14,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:27:14,803 INFO L87 Difference]: Start difference. First operand 16588 states and 24743 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 3 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2021-11-25 20:27:18,218 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:21,587 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:27:23,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:27:25,995 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:27:28,178 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:27:30,350 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:27:32,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:27:35,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:27:37,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:27:39,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:27:39,117 INFO L93 Difference]: Finished difference Result 33172 states and 49499 transitions. [2021-11-25 20:27:39,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:27:39,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 3 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 549 [2021-11-25 20:27:39,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:27:39,210 INFO L225 Difference]: With dead ends: 33172 [2021-11-25 20:27:39,211 INFO L226 Difference]: Without dead ends: 16600 [2021-11-25 20:27:39,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 547 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 20:27:39,357 INFO L933 BasicCegarLoop]: 11182 mSDtfsCounter, 2 mSDsluCounter, 11481 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22356 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:27:39,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 22356 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 622 Invalid, 9 Unknown, 0 Unchecked, 23.6s Time] [2021-11-25 20:27:39,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16600 states. [2021-11-25 20:27:53,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16600 to 16594. [2021-11-25 20:27:53,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16594 states, 8869 states have (on average 1.1207576953433307) internal successors, (9940), 8924 states have internal predecessors, (9940), 7397 states have call successors, (7397), 328 states have call predecessors, (7397), 327 states have return successors, (7414), 7361 states have call predecessors, (7414), 7394 states have call successors, (7414) [2021-11-25 20:27:53,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16594 states to 16594 states and 24751 transitions. [2021-11-25 20:27:53,665 INFO L78 Accepts]: Start accepts. Automaton has 16594 states and 24751 transitions. Word has length 549 [2021-11-25 20:27:53,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:27:53,667 INFO L470 AbstractCegarLoop]: Abstraction has 16594 states and 24751 transitions. [2021-11-25 20:27:53,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 3 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2021-11-25 20:27:53,667 INFO L276 IsEmpty]: Start isEmpty. Operand 16594 states and 24751 transitions. [2021-11-25 20:27:53,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2021-11-25 20:27:53,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:27:53,751 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 9, 9, 9, 9, 9, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:27:53,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:27:53,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:27:53,977 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 20:27:53,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:27:53,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1545984562, now seen corresponding path program 1 times [2021-11-25 20:27:53,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:27:53,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836566674] [2021-11-25 20:27:53,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:27:53,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:27:54,466 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:27:54,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549396815] [2021-11-25 20:27:54,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:27:54,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:27:54,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:27:54,469 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:27:54,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:27:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:27:58,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 9776 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-25 20:27:58,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:28:01,764 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 48 proven. 36 refuted. 0 times theorem prover too weak. 883 trivial. 0 not checked. [2021-11-25 20:28:01,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:28:07,866 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2021-11-25 20:28:07,866 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:28:07,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836566674] [2021-11-25 20:28:07,866 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:28:07,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549396815] [2021-11-25 20:28:07,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549396815] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 20:28:07,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:28:07,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2021-11-25 20:28:07,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669608296] [2021-11-25 20:28:07,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:28:07,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:28:07,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:28:07,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:28:07,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:28:07,874 INFO L87 Difference]: Start difference. First operand 16594 states and 24751 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 3 states have call successors, (82), 4 states have call predecessors, (82), 2 states have return successors, (80), 3 states have call predecessors, (80), 3 states have call successors, (80) [2021-11-25 20:28:11,749 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:28:16,879 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:28:19,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:28:21,330 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:28:23,480 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:28:25,664 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:28:29,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:28:32,019 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:28:34,404 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:28:38,583 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 20:28:41,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:28:57,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:28:57,244 INFO L93 Difference]: Finished difference Result 16603 states and 24763 transitions. [2021-11-25 20:28:57,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:28:57,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 3 states have call successors, (82), 4 states have call predecessors, (82), 2 states have return successors, (80), 3 states have call predecessors, (80), 3 states have call successors, (80) Word has length 556 [2021-11-25 20:28:57,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:28:57,246 INFO L225 Difference]: With dead ends: 16603 [2021-11-25 20:28:57,246 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 20:28:57,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1112 GetRequests, 1104 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-25 20:28:57,317 INFO L933 BasicCegarLoop]: 11200 mSDtfsCounter, 15865 mSDsluCounter, 23024 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 6928 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15903 SdHoareTripleChecker+Valid, 33599 SdHoareTripleChecker+Invalid, 8136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6928 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:28:57,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15903 Valid, 33599 Invalid, 8136 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6928 Valid, 1197 Invalid, 11 Unknown, 0 Unchecked, 48.4s Time] [2021-11-25 20:28:57,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 20:28:57,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 20:28:57,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:28:57,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 20:28:57,327 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 556 [2021-11-25 20:28:57,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:28:57,327 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 20:28:57,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 3 states have call successors, (82), 4 states have call predecessors, (82), 2 states have return successors, (80), 3 states have call predecessors, (80), 3 states have call successors, (80) [2021-11-25 20:28:57,328 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 20:28:57,328 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 20:28:57,331 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-25 20:28:57,332 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-25 20:28:57,332 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-25 20:28:57,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:28:57,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d99543-41cb-4497-971c-af6171687214/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-25 20:28:57,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.