./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bd10d1-2f24-4770-bd39-e15b64de2622/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bd10d1-2f24-4770-bd39-e15b64de2622/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bd10d1-2f24-4770-bd39-e15b64de2622/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bd10d1-2f24-4770-bd39-e15b64de2622/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bd10d1-2f24-4770-bd39-e15b64de2622/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bd10d1-2f24-4770-bd39-e15b64de2622/bin/utaipan-g80aRyZoba --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 463dbca1530ea0e57c159e9405d50f794488f63283b3e27908f44b92b1921358 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 00:32:51,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:32:51,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:32:51,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:32:51,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:32:51,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:32:51,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:32:51,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:32:51,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:32:51,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:32:51,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:32:51,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:32:51,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:32:51,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:32:51,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:32:51,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:32:51,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:32:51,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:32:51,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:32:51,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:32:51,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:32:51,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:32:51,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:32:51,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:32:51,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:32:51,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:32:51,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:32:51,976 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:32:51,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:32:51,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:32:51,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:32:51,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:32:51,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:32:51,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:32:51,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:32:51,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:32:51,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:32:51,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:32:51,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:32:51,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:32:51,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:32:51,986 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bd10d1-2f24-4770-bd39-e15b64de2622/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 00:32:52,019 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:32:52,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:32:52,020 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:32:52,020 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:32:52,021 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:32:52,021 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:32:52,022 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:32:52,022 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:32:52,022 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:32:52,022 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:32:52,023 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:32:52,023 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:32:52,023 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:32:52,023 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:32:52,024 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:32:52,024 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:32:52,024 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:32:52,024 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:32:52,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:32:52,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:32:52,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:32:52,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:32:52,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:32:52,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:32:52,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:32:52,027 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:32:52,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:32:52,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:32:52,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:32:52,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:32:52,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:32:52,028 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:32:52,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:32:52,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:32:52,029 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:32:52,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:32:52,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:32:52,030 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:32:52,030 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bd10d1-2f24-4770-bd39-e15b64de2622/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bd10d1-2f24-4770-bd39-e15b64de2622/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 463dbca1530ea0e57c159e9405d50f794488f63283b3e27908f44b92b1921358 [2022-11-22 00:32:52,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:32:52,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:32:52,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:32:52,323 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:32:52,323 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:32:52,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bd10d1-2f24-4770-bd39-e15b64de2622/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2022-11-22 00:32:55,329 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:32:56,196 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:32:56,196 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bd10d1-2f24-4770-bd39-e15b64de2622/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2022-11-22 00:32:56,264 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bd10d1-2f24-4770-bd39-e15b64de2622/bin/utaipan-g80aRyZoba/data/5e7e34194/509eee6c1102401fa54d6d5c658c2ee9/FLAGddc612ab9 [2022-11-22 00:32:56,280 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bd10d1-2f24-4770-bd39-e15b64de2622/bin/utaipan-g80aRyZoba/data/5e7e34194/509eee6c1102401fa54d6d5c658c2ee9 [2022-11-22 00:32:56,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:32:56,284 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:32:56,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:32:56,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:32:56,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:32:56,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:32:56" (1/1) ... [2022-11-22 00:32:56,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13410e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:56, skipping insertion in model container [2022-11-22 00:32:56,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:32:56" (1/1) ... [2022-11-22 00:32:56,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:32:56,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:33:01,626 WARN L237 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_57bd10d1-2f24-4770-bd39-e15b64de2622/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487146,487159] [2022-11-22 00:33:01,632 WARN L237 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_57bd10d1-2f24-4770-bd39-e15b64de2622/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487315,487328] [2022-11-22 00:33:01,640 WARN L237 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_57bd10d1-2f24-4770-bd39-e15b64de2622/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487482,487495] [2022-11-22 00:33:01,641 WARN L237 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_57bd10d1-2f24-4770-bd39-e15b64de2622/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487650,487663] [2022-11-22 00:33:01,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:33:01,756 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:33:02,293 WARN L237 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_57bd10d1-2f24-4770-bd39-e15b64de2622/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487146,487159] [2022-11-22 00:33:02,294 WARN L237 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_57bd10d1-2f24-4770-bd39-e15b64de2622/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487315,487328] [2022-11-22 00:33:02,295 WARN L237 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_57bd10d1-2f24-4770-bd39-e15b64de2622/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487482,487495] [2022-11-22 00:33:02,295 WARN L237 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_57bd10d1-2f24-4770-bd39-e15b64de2622/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487650,487663] [2022-11-22 00:33:02,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:33:02,673 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:33:02,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:02 WrapperNode [2022-11-22 00:33:02,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:33:02,675 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:33:02,675 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:33:02,676 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:33:02,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:02" (1/1) ... [2022-11-22 00:33:02,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:02" (1/1) ... [2022-11-22 00:33:03,323 INFO L138 Inliner]: procedures = 676, calls = 4258, calls flagged for inlining = 325, calls inlined = 302, statements flattened = 10246 [2022-11-22 00:33:03,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:33:03,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:33:03,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:33:03,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:33:03,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:02" (1/1) ... [2022-11-22 00:33:03,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:02" (1/1) ... [2022-11-22 00:33:03,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:02" (1/1) ... [2022-11-22 00:33:03,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:02" (1/1) ... [2022-11-22 00:33:03,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:02" (1/1) ... [2022-11-22 00:33:03,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:02" (1/1) ... [2022-11-22 00:33:03,732 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:02" (1/1) ... [2022-11-22 00:33:03,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:02" (1/1) ... [2022-11-22 00:33:03,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:33:03,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:33:03,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:33:03,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:33:03,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:02" (1/1) ... [2022-11-22 00:33:03,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:33:03,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bd10d1-2f24-4770-bd39-e15b64de2622/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:33:03,879 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bd10d1-2f24-4770-bd39-e15b64de2622/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:33:03,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bd10d1-2f24-4770-bd39-e15b64de2622/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:33:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-22 00:33:03,930 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-22 00:33:03,930 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_read [2022-11-22 00:33:03,931 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_read [2022-11-22 00:33:03,931 INFO L130 BoogieDeclarations]: Found specification of procedure cas_pcs_link_check [2022-11-22 00:33:03,931 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_pcs_link_check [2022-11-22 00:33:03,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_121 [2022-11-22 00:33:03,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_121 [2022-11-22 00:33:03,932 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-22 00:33:03,932 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-22 00:33:03,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 00:33:03,932 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 00:33:03,933 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-22 00:33:03,933 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-22 00:33:03,933 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2022-11-22 00:33:03,933 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2022-11-22 00:33:03,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 00:33:03,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 00:33:03,934 INFO L130 BoogieDeclarations]: Found specification of procedure cas_mii_link_check [2022-11-22 00:33:03,935 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_mii_link_check [2022-11-22 00:33:03,935 INFO L130 BoogieDeclarations]: Found specification of procedure cas_calc_tabort [2022-11-22 00:33:03,936 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_calc_tabort [2022-11-22 00:33:03,936 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2022-11-22 00:33:03,936 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2022-11-22 00:33:03,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_3 [2022-11-22 00:33:03,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_3 [2022-11-22 00:33:03,937 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2022-11-22 00:33:03,937 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2022-11-22 00:33:03,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 00:33:03,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 00:33:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_147 [2022-11-22 00:33:03,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_147 [2022-11-22 00:33:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2022-11-22 00:33:03,939 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2022-11-22 00:33:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 00:33:03,939 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 00:33:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-22 00:33:03,939 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-22 00:33:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure cas_lock_tx [2022-11-22 00:33:03,940 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_lock_tx [2022-11-22 00:33:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-22 00:33:03,940 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-22 00:33:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-22 00:33:03,941 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-22 00:33:03,941 INFO L130 BoogieDeclarations]: Found specification of procedure cas_disable_irq [2022-11-22 00:33:03,942 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_disable_irq [2022-11-22 00:33:03,942 INFO L130 BoogieDeclarations]: Found specification of procedure cas_free_rxds [2022-11-22 00:33:03,943 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_free_rxds [2022-11-22 00:33:03,943 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_page [2022-11-22 00:33:03,943 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_page [2022-11-22 00:33:03,943 INFO L130 BoogieDeclarations]: Found specification of procedure cas_open [2022-11-22 00:33:03,943 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_open [2022-11-22 00:33:03,944 INFO L130 BoogieDeclarations]: Found specification of procedure cas_interrupt [2022-11-22 00:33:03,944 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_interrupt [2022-11-22 00:33:03,944 INFO L130 BoogieDeclarations]: Found specification of procedure cas_tx_tiny_free [2022-11-22 00:33:03,944 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_tx_tiny_free [2022-11-22 00:33:03,944 INFO L130 BoogieDeclarations]: Found specification of procedure PageTail [2022-11-22 00:33:03,944 INFO L138 BoogieDeclarations]: Found implementation of procedure PageTail [2022-11-22 00:33:03,945 INFO L130 BoogieDeclarations]: Found specification of procedure tx_tiny_map [2022-11-22 00:33:03,945 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_tiny_map [2022-11-22 00:33:03,945 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_init [2022-11-22 00:33:03,945 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_init [2022-11-22 00:33:03,945 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2022-11-22 00:33:03,945 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2022-11-22 00:33:03,946 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size_set [2022-11-22 00:33:03,946 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size_set [2022-11-22 00:33:03,946 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-22 00:33:03,946 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-22 00:33:03,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 00:33:03,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 00:33:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure cas_enable_irq [2022-11-22 00:33:03,948 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_enable_irq [2022-11-22 00:33:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 00:33:03,949 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 00:33:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-22 00:33:03,949 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-22 00:33:03,950 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_dequeue [2022-11-22 00:33:03,950 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_dequeue [2022-11-22 00:33:03,950 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-11-22 00:33:03,951 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-11-22 00:33:03,951 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 00:33:03,951 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 00:33:03,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 00:33:03,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 00:33:03,952 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-22 00:33:03,952 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-22 00:33:03,953 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-22 00:33:03,953 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-22 00:33:03,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:33:03,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_108 [2022-11-22 00:33:03,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_108 [2022-11-22 00:33:03,954 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2022-11-22 00:33:03,954 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2022-11-22 00:33:03,954 INFO L130 BoogieDeclarations]: Found specification of procedure cas_set_multicast [2022-11-22 00:33:03,954 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_set_multicast [2022-11-22 00:33:03,955 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-22 00:33:03,955 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-22 00:33:03,955 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-22 00:33:03,955 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-22 00:33:03,955 INFO L130 BoogieDeclarations]: Found specification of procedure cas_spare_free [2022-11-22 00:33:03,955 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_spare_free [2022-11-22 00:33:03,956 INFO L130 BoogieDeclarations]: Found specification of procedure cas_tx_timeout [2022-11-22 00:33:03,956 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_tx_timeout [2022-11-22 00:33:03,957 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 00:33:03,957 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 00:33:03,961 INFO L130 BoogieDeclarations]: Found specification of procedure cas_read_pcs_link_mode [2022-11-22 00:33:03,961 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_read_pcs_link_mode [2022-11-22 00:33:03,962 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-22 00:33:03,962 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-22 00:33:03,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 00:33:03,963 INFO L130 BoogieDeclarations]: Found specification of procedure cas_close [2022-11-22 00:33:03,964 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_close [2022-11-22 00:33:03,964 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_swap [2022-11-22 00:33:03,964 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_swap [2022-11-22 00:33:03,971 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 00:33:03,971 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 00:33:03,971 INFO L130 BoogieDeclarations]: Found specification of procedure cas_netpoll [2022-11-22 00:33:03,972 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_netpoll [2022-11-22 00:33:03,972 INFO L130 BoogieDeclarations]: Found specification of procedure cas_hard_reset [2022-11-22 00:33:03,972 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_hard_reset [2022-11-22 00:33:03,972 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-22 00:33:03,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-22 00:33:03,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 00:33:03,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 00:33:03,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 00:33:03,973 INFO L130 BoogieDeclarations]: Found specification of procedure cas_rxc_init [2022-11-22 00:33:03,973 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_rxc_init [2022-11-22 00:33:03,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:33:03,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 00:33:03,974 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 00:33:03,974 INFO L130 BoogieDeclarations]: Found specification of procedure cas_clear_mac_err [2022-11-22 00:33:03,974 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_clear_mac_err [2022-11-22 00:33:03,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-22 00:33:03,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-22 00:33:03,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 00:33:03,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 00:33:03,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 00:33:03,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 00:33:03,975 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-22 00:33:03,975 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-22 00:33:03,976 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_3_2 [2022-11-22 00:33:03,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_3_2 [2022-11-22 00:33:03,976 INFO L130 BoogieDeclarations]: Found specification of procedure cas_remove_one [2022-11-22 00:33:03,976 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_remove_one [2022-11-22 00:33:03,976 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_NOT_ARG_SIGN [2022-11-22 00:33:03,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_NOT_ARG_SIGN [2022-11-22 00:33:03,977 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-22 00:33:03,977 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-22 00:33:03,977 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-22 00:33:03,977 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-22 00:33:03,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 00:33:03,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 00:33:03,978 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-11-22 00:33:03,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-11-22 00:33:03,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 00:33:03,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-22 00:33:03,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-22 00:33:03,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:33:03,979 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice_init [2022-11-22 00:33:03,979 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice_init [2022-11-22 00:33:03,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 00:33:03,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 00:33:03,980 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 00:33:03,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 00:33:03,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 00:33:03,980 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-22 00:33:03,980 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 00:33:03,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 00:33:03,980 INFO L130 BoogieDeclarations]: Found specification of procedure cas_set_link_modes [2022-11-22 00:33:03,981 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_set_link_modes [2022-11-22 00:33:03,981 INFO L130 BoogieDeclarations]: Found specification of procedure cas_link_timer [2022-11-22 00:33:03,981 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_link_timer [2022-11-22 00:33:03,981 INFO L130 BoogieDeclarations]: Found specification of procedure cas_read_mii_link_mode [2022-11-22 00:33:03,982 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_read_mii_link_mode [2022-11-22 00:33:03,982 INFO L130 BoogieDeclarations]: Found specification of procedure __list_splice [2022-11-22 00:33:03,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_splice [2022-11-22 00:33:03,982 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-22 00:33:03,983 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-22 00:33:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-22 00:33:03,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-22 00:33:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-22 00:33:03,983 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-22 00:33:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure kmap_atomic [2022-11-22 00:33:03,984 INFO L138 BoogieDeclarations]: Found implementation of procedure kmap_atomic [2022-11-22 00:33:03,984 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-22 00:33:03,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-22 00:33:03,984 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 00:33:03,984 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 00:33:03,984 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-22 00:33:03,985 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-22 00:33:03,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 00:33:03,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 00:33:03,985 INFO L130 BoogieDeclarations]: Found specification of procedure csum_unfold [2022-11-22 00:33:03,985 INFO L138 BoogieDeclarations]: Found implementation of procedure csum_unfold [2022-11-22 00:33:03,985 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-11-22 00:33:03,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-11-22 00:33:03,986 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-22 00:33:03,986 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-22 00:33:03,986 INFO L130 BoogieDeclarations]: Found specification of procedure cas_entropy_gather [2022-11-22 00:33:03,986 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_entropy_gather [2022-11-22 00:33:03,986 INFO L130 BoogieDeclarations]: Found specification of procedure cas_resume [2022-11-22 00:33:03,986 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_resume [2022-11-22 00:33:03,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:33:03,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:33:03,987 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_alloc [2022-11-22 00:33:03,987 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_alloc [2022-11-22 00:33:03,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 00:33:03,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 00:33:03,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 00:33:03,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 00:33:03,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 00:33:03,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 00:33:03,988 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-22 00:33:03,988 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-22 00:33:03,988 INFO L130 BoogieDeclarations]: Found specification of procedure cas_mif_poll [2022-11-22 00:33:03,989 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_mif_poll [2022-11-22 00:33:03,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-22 00:33:03,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-22 00:33:03,989 INFO L130 BoogieDeclarations]: Found specification of procedure cas_unlock_tx [2022-11-22 00:33:03,989 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_unlock_tx [2022-11-22 00:33:03,989 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-22 00:33:03,990 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-22 00:33:03,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_133 [2022-11-22 00:33:03,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_133 [2022-11-22 00:33:03,990 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice [2022-11-22 00:33:03,990 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice [2022-11-22 00:33:03,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_135 [2022-11-22 00:33:03,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_135 [2022-11-22 00:33:03,991 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-22 00:33:03,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-22 00:33:03,991 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_sub [2022-11-22 00:33:03,992 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_sub [2022-11-22 00:33:03,996 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-22 00:33:03,996 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-22 00:33:03,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 00:33:03,996 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 00:33:03,997 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 00:33:03,997 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 00:33:03,997 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-22 00:33:03,997 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-22 00:33:03,997 INFO L130 BoogieDeclarations]: Found specification of procedure tx_tiny_buf [2022-11-22 00:33:03,998 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_tiny_buf [2022-11-22 00:33:03,998 INFO L130 BoogieDeclarations]: Found specification of procedure cas_mac_reset [2022-11-22 00:33:03,998 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_mac_reset [2022-11-22 00:33:03,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_cas [2022-11-22 00:33:03,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_cas [2022-11-22 00:33:03,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:33:03,999 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-22 00:33:03,999 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-22 00:33:03,999 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_frag_set_page [2022-11-22 00:33:04,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_frag_set_page [2022-11-22 00:33:04,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 00:33:04,000 INFO L130 BoogieDeclarations]: Found specification of procedure cas_get_regs_len [2022-11-22 00:33:04,000 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_get_regs_len [2022-11-22 00:33:04,000 INFO L130 BoogieDeclarations]: Found specification of procedure cas_reset [2022-11-22 00:33:04,000 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_reset [2022-11-22 00:33:04,001 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_8_2 [2022-11-22 00:33:04,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_8_2 [2022-11-22 00:33:04,001 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_NOT_ARG_SIGN [2022-11-22 00:33:04,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_NOT_ARG_SIGN [2022-11-22 00:33:04,001 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2022-11-22 00:33:04,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2022-11-22 00:33:04,001 INFO L130 BoogieDeclarations]: Found specification of procedure cas_post_page [2022-11-22 00:33:04,002 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_post_page [2022-11-22 00:33:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 00:33:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-22 00:33:04,002 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-22 00:33:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure cas_nway_reset [2022-11-22 00:33:04,002 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_nway_reset [2022-11-22 00:33:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-22 00:33:04,003 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-22 00:33:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 00:33:04,003 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 00:33:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 00:33:04,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 00:33:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure cas_setup_multicast [2022-11-22 00:33:04,004 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_setup_multicast [2022-11-22 00:33:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_powerdown [2022-11-22 00:33:04,004 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_powerdown [2022-11-22 00:33:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure cas_post_rxds_ringN [2022-11-22 00:33:04,004 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_post_rxds_ringN [2022-11-22 00:33:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-22 00:33:04,004 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-22 00:33:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure cas_vpd_match [2022-11-22 00:33:04,005 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_vpd_match [2022-11-22 00:33:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_83 [2022-11-22 00:33:04,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_83 [2022-11-22 00:33:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_81 [2022-11-22 00:33:04,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_81 [2022-11-22 00:33:04,006 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-22 00:33:04,006 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-22 00:33:04,006 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_weight [2022-11-22 00:33:04,006 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_weight [2022-11-22 00:33:04,006 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 00:33:04,006 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 00:33:04,006 INFO L130 BoogieDeclarations]: Found specification of procedure page_count [2022-11-22 00:33:04,007 INFO L138 BoogieDeclarations]: Found implementation of procedure page_count [2022-11-22 00:33:04,007 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 00:33:04,007 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 00:33:04,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_77 [2022-11-22 00:33:04,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_77 [2022-11-22 00:33:04,007 INFO L130 BoogieDeclarations]: Found specification of procedure cas_shutdown [2022-11-22 00:33:04,008 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_shutdown [2022-11-22 00:33:04,008 INFO L130 BoogieDeclarations]: Found specification of procedure cas_begin_auto_negotiation [2022-11-22 00:33:04,008 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_begin_auto_negotiation [2022-11-22 00:33:04,008 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2022-11-22 00:33:04,008 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2022-11-22 00:33:04,008 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 00:33:04,008 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 00:33:04,009 INFO L130 BoogieDeclarations]: Found specification of procedure cas_write_txd [2022-11-22 00:33:04,009 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_write_txd [2022-11-22 00:33:04,009 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 00:33:04,009 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 00:33:04,009 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_frag_ref [2022-11-22 00:33:04,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_frag_ref [2022-11-22 00:33:04,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:33:04,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 00:33:04,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 00:33:04,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_82 [2022-11-22 00:33:04,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_82 [2022-11-22 00:33:04,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_84 [2022-11-22 00:33:04,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_84 [2022-11-22 00:33:04,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_79 [2022-11-22 00:33:04,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_79 [2022-11-22 00:33:04,011 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-22 00:33:04,011 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-22 00:33:04,011 INFO L130 BoogieDeclarations]: Found specification of procedure cas_init_hw [2022-11-22 00:33:04,011 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_init_hw [2022-11-22 00:33:04,012 INFO L130 BoogieDeclarations]: Found specification of procedure cas_clean_rings [2022-11-22 00:33:04,012 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_clean_rings [2022-11-22 00:33:04,012 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_free [2022-11-22 00:33:04,012 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_free [2022-11-22 00:33:04,012 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-22 00:33:04,012 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-22 00:33:04,013 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_write [2022-11-22 00:33:04,013 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_write [2022-11-22 00:33:04,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 00:33:04,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 00:33:04,013 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-22 00:33:04,013 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-22 00:33:04,014 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-22 00:33:04,014 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-22 00:33:04,014 INFO L130 BoogieDeclarations]: Found specification of procedure cas_spare_recover [2022-11-22 00:33:04,014 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_spare_recover [2022-11-22 00:33:04,014 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed [2022-11-22 00:33:04,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed [2022-11-22 00:33:04,015 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-22 00:33:04,015 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-22 00:33:04,015 INFO L130 BoogieDeclarations]: Found specification of procedure cas_get_stats [2022-11-22 00:33:04,015 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_get_stats [2022-11-22 00:33:04,015 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-22 00:33:04,015 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-22 00:33:04,015 INFO L130 BoogieDeclarations]: Found specification of procedure __kunmap_atomic [2022-11-22 00:33:04,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __kunmap_atomic [2022-11-22 00:33:04,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:33:04,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 00:33:04,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 00:33:04,016 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2022-11-22 00:33:04,016 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2022-11-22 00:33:04,017 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-11-22 00:33:04,017 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-11-22 00:33:04,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_107 [2022-11-22 00:33:04,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_107 [2022-11-22 00:33:05,405 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:33:05,410 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:33:05,922 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 00:36:56,216 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:37:03,002 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:37:03,003 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-22 00:37:03,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:37:03 BoogieIcfgContainer [2022-11-22 00:37:03,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:37:03,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:37:03,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:37:03,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:37:03,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:32:56" (1/3) ... [2022-11-22 00:37:03,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de24450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:37:03, skipping insertion in model container [2022-11-22 00:37:03,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:02" (2/3) ... [2022-11-22 00:37:03,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de24450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:37:03, skipping insertion in model container [2022-11-22 00:37:03,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:37:03" (3/3) ... [2022-11-22 00:37:03,024 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2022-11-22 00:37:03,045 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:37:03,045 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 00:37:03,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:37:03,180 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4e313e01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:37:03,181 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 00:37:03,196 INFO L276 IsEmpty]: Start isEmpty. Operand has 2825 states, 1584 states have (on average 1.2613636363636365) internal successors, (1998), 1665 states have internal predecessors, (1998), 1066 states have call successors, (1066), 173 states have call predecessors, (1066), 172 states have return successors, (1062), 1048 states have call predecessors, (1062), 1062 states have call successors, (1062) [2022-11-22 00:37:03,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-22 00:37:03,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:37:03,207 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:37:03,207 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:37:03,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:37:03,215 INFO L85 PathProgramCache]: Analyzing trace with hash -506179761, now seen corresponding path program 1 times [2022-11-22 00:37:03,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:37:03,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576475878] [2022-11-22 00:37:03,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:37:03,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:37:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:37:05,935 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 00:37:05,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:37:05,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576475878] [2022-11-22 00:37:05,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576475878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:37:05,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:37:05,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:37:05,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370590764] [2022-11-22 00:37:05,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:37:05,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:37:05,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:37:05,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:37:05,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:37:05,983 INFO L87 Difference]: Start difference. First operand has 2825 states, 1584 states have (on average 1.2613636363636365) internal successors, (1998), 1665 states have internal predecessors, (1998), 1066 states have call successors, (1066), 173 states have call predecessors, (1066), 172 states have return successors, (1062), 1048 states have call predecessors, (1062), 1062 states have call successors, (1062) 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) [2022-11-22 00:37:08,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:20,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:37:20,179 INFO L93 Difference]: Finished difference Result 7966 states and 12094 transitions. [2022-11-22 00:37:20,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:37:20,181 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 [2022-11-22 00:37:20,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:37:20,232 INFO L225 Difference]: With dead ends: 7966 [2022-11-22 00:37:20,233 INFO L226 Difference]: Without dead ends: 5144 [2022-11-22 00:37:20,266 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:37:20,270 INFO L413 NwaCegarLoop]: 4701 mSDtfsCounter, 3948 mSDsluCounter, 12638 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3967 SdHoareTripleChecker+Valid, 17339 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:37:20,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3967 Valid, 17339 Invalid, 1614 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1610 Invalid, 1 Unknown, 0 Unchecked, 13.4s Time] [2022-11-22 00:37:20,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5144 states. [2022-11-22 00:37:20,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5144 to 5136. [2022-11-22 00:37:20,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5136 states, 2870 states have (on average 1.2571428571428571) internal successors, (3608), 3025 states have internal predecessors, (3608), 1936 states have call successors, (1936), 336 states have call predecessors, (1936), 327 states have return successors, (2014), 1881 states have call predecessors, (2014), 1930 states have call successors, (2014) [2022-11-22 00:37:20,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5136 states to 5136 states and 7558 transitions. [2022-11-22 00:37:20,785 INFO L78 Accepts]: Start accepts. Automaton has 5136 states and 7558 transitions. Word has length 35 [2022-11-22 00:37:20,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:37:20,785 INFO L495 AbstractCegarLoop]: Abstraction has 5136 states and 7558 transitions. [2022-11-22 00:37:20,786 INFO L496 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) [2022-11-22 00:37:20,786 INFO L276 IsEmpty]: Start isEmpty. Operand 5136 states and 7558 transitions. [2022-11-22 00:37:20,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-22 00:37:20,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:37:20,790 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:37:20,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:37:20,790 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:37:20,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:37:20,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1876656955, now seen corresponding path program 1 times [2022-11-22 00:37:20,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:37:20,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88383033] [2022-11-22 00:37:20,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:37:20,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:37:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:37:22,436 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 00:37:22,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:37:22,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88383033] [2022-11-22 00:37:22,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88383033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:37:22,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:37:22,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:37:22,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026249096] [2022-11-22 00:37:22,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:37:22,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:37:22,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:37:22,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:37:22,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:37:22,440 INFO L87 Difference]: Start difference. First operand 5136 states and 7558 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 00:37:24,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:34,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:37:34,137 INFO L93 Difference]: Finished difference Result 5146 states and 7567 transitions. [2022-11-22 00:37:34,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:37:34,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 41 [2022-11-22 00:37:34,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:37:34,180 INFO L225 Difference]: With dead ends: 5146 [2022-11-22 00:37:34,180 INFO L226 Difference]: Without dead ends: 5144 [2022-11-22 00:37:34,185 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:37:34,187 INFO L413 NwaCegarLoop]: 3709 mSDtfsCounter, 4073 mSDsluCounter, 7392 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4090 SdHoareTripleChecker+Valid, 11101 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:37:34,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4090 Valid, 11101 Invalid, 1204 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1202 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2022-11-22 00:37:34,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5144 states. [2022-11-22 00:37:34,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5144 to 5144. [2022-11-22 00:37:34,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5144 states, 2876 states have (on average 1.256606397774687) internal successors, (3614), 3031 states have internal predecessors, (3614), 1936 states have call successors, (1936), 338 states have call predecessors, (1936), 329 states have return successors, (2014), 1881 states have call predecessors, (2014), 1930 states have call successors, (2014) [2022-11-22 00:37:34,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5144 states to 5144 states and 7564 transitions. [2022-11-22 00:37:34,833 INFO L78 Accepts]: Start accepts. Automaton has 5144 states and 7564 transitions. Word has length 41 [2022-11-22 00:37:34,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:37:34,834 INFO L495 AbstractCegarLoop]: Abstraction has 5144 states and 7564 transitions. [2022-11-22 00:37:34,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 00:37:34,836 INFO L276 IsEmpty]: Start isEmpty. Operand 5144 states and 7564 transitions. [2022-11-22 00:37:34,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-22 00:37:34,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:37:34,847 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:37:34,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:37:34,848 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:37:34,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:37:34,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1839038960, now seen corresponding path program 1 times [2022-11-22 00:37:34,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:37:34,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542934768] [2022-11-22 00:37:34,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:37:34,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:37:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:37:36,596 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:37:36,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:37:36,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542934768] [2022-11-22 00:37:36,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542934768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:37:36,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:37:36,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:37:36,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903335687] [2022-11-22 00:37:36,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:37:36,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:37:36,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:37:36,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:37:36,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:37:36,600 INFO L87 Difference]: Start difference. First operand 5144 states and 7564 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 00:37:38,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:47,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:37:47,108 INFO L93 Difference]: Finished difference Result 5154 states and 7573 transitions. [2022-11-22 00:37:47,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:37:47,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 46 [2022-11-22 00:37:47,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:37:47,147 INFO L225 Difference]: With dead ends: 5154 [2022-11-22 00:37:47,147 INFO L226 Difference]: Without dead ends: 5152 [2022-11-22 00:37:47,151 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:37:47,152 INFO L413 NwaCegarLoop]: 3709 mSDtfsCounter, 4073 mSDsluCounter, 7392 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4089 SdHoareTripleChecker+Valid, 11101 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:37:47,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4089 Valid, 11101 Invalid, 1204 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1202 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2022-11-22 00:37:47,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5152 states. [2022-11-22 00:37:47,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5152 to 5152. [2022-11-22 00:37:47,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5152 states, 2882 states have (on average 1.2560721721027064) internal successors, (3620), 3037 states have internal predecessors, (3620), 1936 states have call successors, (1936), 340 states have call predecessors, (1936), 331 states have return successors, (2014), 1881 states have call predecessors, (2014), 1930 states have call successors, (2014) [2022-11-22 00:37:47,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5152 states to 5152 states and 7570 transitions. [2022-11-22 00:37:47,532 INFO L78 Accepts]: Start accepts. Automaton has 5152 states and 7570 transitions. Word has length 46 [2022-11-22 00:37:47,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:37:47,533 INFO L495 AbstractCegarLoop]: Abstraction has 5152 states and 7570 transitions. [2022-11-22 00:37:47,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 00:37:47,533 INFO L276 IsEmpty]: Start isEmpty. Operand 5152 states and 7570 transitions. [2022-11-22 00:37:47,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-22 00:37:47,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:37:47,536 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:37:47,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:37:47,537 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:37:47,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:37:47,537 INFO L85 PathProgramCache]: Analyzing trace with hash -806884506, now seen corresponding path program 1 times [2022-11-22 00:37:47,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:37:47,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809017813] [2022-11-22 00:37:47,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:37:47,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:37:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:37:48,971 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-22 00:37:48,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:37:48,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809017813] [2022-11-22 00:37:48,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809017813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:37:48,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:37:48,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:37:48,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113408737] [2022-11-22 00:37:48,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:37:48,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:37:48,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:37:48,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:37:48,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:37:48,974 INFO L87 Difference]: Start difference. First operand 5152 states and 7570 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, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-22 00:37:51,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:58,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:37:58,727 INFO L93 Difference]: Finished difference Result 5162 states and 7579 transitions. [2022-11-22 00:37:58,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:37:58,727 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, (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 50 [2022-11-22 00:37:58,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:37:58,764 INFO L225 Difference]: With dead ends: 5162 [2022-11-22 00:37:58,764 INFO L226 Difference]: Without dead ends: 5160 [2022-11-22 00:37:58,769 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:37:58,770 INFO L413 NwaCegarLoop]: 3709 mSDtfsCounter, 4074 mSDsluCounter, 7392 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4089 SdHoareTripleChecker+Valid, 11101 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:37:58,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4089 Valid, 11101 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1202 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2022-11-22 00:37:58,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5160 states. [2022-11-22 00:37:59,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5160 to 5160. [2022-11-22 00:37:59,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5160 states, 2888 states have (on average 1.255540166204986) internal successors, (3626), 3043 states have internal predecessors, (3626), 1936 states have call successors, (1936), 342 states have call predecessors, (1936), 333 states have return successors, (2014), 1881 states have call predecessors, (2014), 1930 states have call successors, (2014) [2022-11-22 00:37:59,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5160 states to 5160 states and 7576 transitions. [2022-11-22 00:37:59,352 INFO L78 Accepts]: Start accepts. Automaton has 5160 states and 7576 transitions. Word has length 50 [2022-11-22 00:37:59,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:37:59,352 INFO L495 AbstractCegarLoop]: Abstraction has 5160 states and 7576 transitions. [2022-11-22 00:37:59,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-22 00:37:59,353 INFO L276 IsEmpty]: Start isEmpty. Operand 5160 states and 7576 transitions. [2022-11-22 00:37:59,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-22 00:37:59,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:37:59,355 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:37:59,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:37:59,356 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:37:59,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:37:59,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2089433999, now seen corresponding path program 1 times [2022-11-22 00:37:59,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:37:59,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564555608] [2022-11-22 00:37:59,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:37:59,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:37:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:38:00,697 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 00:38:00,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:38:00,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564555608] [2022-11-22 00:38:00,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564555608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:38:00,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:38:00,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:38:00,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381578521] [2022-11-22 00:38:00,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:38:00,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:38:00,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:38:00,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:38:00,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:38:00,700 INFO L87 Difference]: Start difference. First operand 5160 states and 7576 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) [2022-11-22 00:38:02,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:11,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:38:11,947 INFO L93 Difference]: Finished difference Result 5170 states and 7585 transitions. [2022-11-22 00:38:11,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:38:11,948 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 [2022-11-22 00:38:11,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:38:11,988 INFO L225 Difference]: With dead ends: 5170 [2022-11-22 00:38:11,988 INFO L226 Difference]: Without dead ends: 5168 [2022-11-22 00:38:11,993 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:38:11,994 INFO L413 NwaCegarLoop]: 3709 mSDtfsCounter, 4074 mSDsluCounter, 7392 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4088 SdHoareTripleChecker+Valid, 11101 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:38:11,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4088 Valid, 11101 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1202 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2022-11-22 00:38:12,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5168 states. [2022-11-22 00:38:12,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5168 to 5168. [2022-11-22 00:38:12,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5168 states, 2894 states have (on average 1.2550103662750518) internal successors, (3632), 3049 states have internal predecessors, (3632), 1936 states have call successors, (1936), 344 states have call predecessors, (1936), 335 states have return successors, (2014), 1881 states have call predecessors, (2014), 1930 states have call successors, (2014) [2022-11-22 00:38:12,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5168 states to 5168 states and 7582 transitions. [2022-11-22 00:38:12,553 INFO L78 Accepts]: Start accepts. Automaton has 5168 states and 7582 transitions. Word has length 55 [2022-11-22 00:38:12,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:38:12,554 INFO L495 AbstractCegarLoop]: Abstraction has 5168 states and 7582 transitions. [2022-11-22 00:38:12,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (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) [2022-11-22 00:38:12,555 INFO L276 IsEmpty]: Start isEmpty. Operand 5168 states and 7582 transitions. [2022-11-22 00:38:12,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-22 00:38:12,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:38:12,557 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:38:12,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:38:12,558 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:38:12,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:38:12,558 INFO L85 PathProgramCache]: Analyzing trace with hash -2017017339, now seen corresponding path program 1 times [2022-11-22 00:38:12,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:38:12,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785302995] [2022-11-22 00:38:12,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:38:12,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:38:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:38:13,983 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-22 00:38:13,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:38:13,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785302995] [2022-11-22 00:38:13,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785302995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:38:13,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:38:13,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:38:13,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606051104] [2022-11-22 00:38:13,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:38:13,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:38:13,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:38:13,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:38:13,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:38:13,985 INFO L87 Difference]: Start difference. First operand 5168 states and 7582 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-22 00:38:16,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:24,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:38:24,494 INFO L93 Difference]: Finished difference Result 5178 states and 7591 transitions. [2022-11-22 00:38:24,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:38:24,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 61 [2022-11-22 00:38:24,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:38:24,529 INFO L225 Difference]: With dead ends: 5178 [2022-11-22 00:38:24,530 INFO L226 Difference]: Without dead ends: 5176 [2022-11-22 00:38:24,534 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:38:24,535 INFO L413 NwaCegarLoop]: 3709 mSDtfsCounter, 4073 mSDsluCounter, 7392 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4086 SdHoareTripleChecker+Valid, 11101 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:38:24,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4086 Valid, 11101 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1202 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2022-11-22 00:38:24,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5176 states. [2022-11-22 00:38:24,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5176 to 5176. [2022-11-22 00:38:24,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5176 states, 2900 states have (on average 1.2544827586206897) internal successors, (3638), 3055 states have internal predecessors, (3638), 1936 states have call successors, (1936), 346 states have call predecessors, (1936), 337 states have return successors, (2014), 1881 states have call predecessors, (2014), 1930 states have call successors, (2014) [2022-11-22 00:38:24,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 7588 transitions. [2022-11-22 00:38:24,961 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 7588 transitions. Word has length 61 [2022-11-22 00:38:24,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:38:24,962 INFO L495 AbstractCegarLoop]: Abstraction has 5176 states and 7588 transitions. [2022-11-22 00:38:24,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-22 00:38:24,962 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 7588 transitions. [2022-11-22 00:38:24,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-22 00:38:24,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:38:24,963 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:38:24,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:38:24,964 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:38:24,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:38:24,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1007542224, now seen corresponding path program 1 times [2022-11-22 00:38:24,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:38:24,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791283420] [2022-11-22 00:38:24,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:38:24,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:38:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:38:26,237 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-22 00:38:26,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:38:26,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791283420] [2022-11-22 00:38:26,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791283420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:38:26,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:38:26,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:38:26,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665160924] [2022-11-22 00:38:26,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:38:26,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:38:26,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:38:26,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:38:26,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:38:26,239 INFO L87 Difference]: Start difference. First operand 5176 states and 7588 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-22 00:38:28,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:37,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:38:37,025 INFO L93 Difference]: Finished difference Result 5186 states and 7597 transitions. [2022-11-22 00:38:37,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:38:37,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 66 [2022-11-22 00:38:37,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:38:37,052 INFO L225 Difference]: With dead ends: 5186 [2022-11-22 00:38:37,053 INFO L226 Difference]: Without dead ends: 5184 [2022-11-22 00:38:37,055 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:38:37,056 INFO L413 NwaCegarLoop]: 3709 mSDtfsCounter, 4073 mSDsluCounter, 7392 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4085 SdHoareTripleChecker+Valid, 11101 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:38:37,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4085 Valid, 11101 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1202 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2022-11-22 00:38:37,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5184 states. [2022-11-22 00:38:37,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5184 to 5184. [2022-11-22 00:38:37,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5184 states, 2906 states have (on average 1.2539573296627666) internal successors, (3644), 3061 states have internal predecessors, (3644), 1936 states have call successors, (1936), 348 states have call predecessors, (1936), 339 states have return successors, (2014), 1881 states have call predecessors, (2014), 1930 states have call successors, (2014) [2022-11-22 00:38:37,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5184 states to 5184 states and 7594 transitions. [2022-11-22 00:38:37,460 INFO L78 Accepts]: Start accepts. Automaton has 5184 states and 7594 transitions. Word has length 66 [2022-11-22 00:38:37,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:38:37,461 INFO L495 AbstractCegarLoop]: Abstraction has 5184 states and 7594 transitions. [2022-11-22 00:38:37,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-22 00:38:37,461 INFO L276 IsEmpty]: Start isEmpty. Operand 5184 states and 7594 transitions. [2022-11-22 00:38:37,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-22 00:38:37,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:38:37,462 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:38:37,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:38:37,463 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:38:37,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:38:37,463 INFO L85 PathProgramCache]: Analyzing trace with hash -733940186, now seen corresponding path program 1 times [2022-11-22 00:38:37,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:38:37,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116444774] [2022-11-22 00:38:37,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:38:37,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:38:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:38:38,849 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-22 00:38:38,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:38:38,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116444774] [2022-11-22 00:38:38,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116444774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:38:38,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:38:38,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:38:38,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972834064] [2022-11-22 00:38:38,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:38:38,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:38:38,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:38:38,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:38:38,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:38:38,851 INFO L87 Difference]: Start difference. First operand 5184 states and 7594 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) [2022-11-22 00:38:40,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:53,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:38:53,065 INFO L93 Difference]: Finished difference Result 7329 states and 10612 transitions. [2022-11-22 00:38:53,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:38:53,066 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 [2022-11-22 00:38:53,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:38:53,108 INFO L225 Difference]: With dead ends: 7329 [2022-11-22 00:38:53,108 INFO L226 Difference]: Without dead ends: 7327 [2022-11-22 00:38:53,115 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:38:53,115 INFO L413 NwaCegarLoop]: 5010 mSDtfsCounter, 3048 mSDsluCounter, 12327 mSDsCounter, 0 mSdLazyCounter, 1753 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3059 SdHoareTripleChecker+Valid, 17337 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1753 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:38:53,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3059 Valid, 17337 Invalid, 1756 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1753 Invalid, 1 Unknown, 0 Unchecked, 13.6s Time] [2022-11-22 00:38:53,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7327 states. [2022-11-22 00:38:53,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7327 to 7319. [2022-11-22 00:38:53,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7319 states, 4107 states have (on average 1.2434867299732164) internal successors, (5107), 4299 states have internal predecessors, (5107), 2677 states have call successors, (2677), 549 states have call predecessors, (2677), 532 states have return successors, (2819), 2608 states have call predecessors, (2819), 2671 states have call successors, (2819) [2022-11-22 00:38:53,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7319 states to 7319 states and 10603 transitions. [2022-11-22 00:38:53,810 INFO L78 Accepts]: Start accepts. Automaton has 7319 states and 10603 transitions. Word has length 70 [2022-11-22 00:38:53,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:38:53,811 INFO L495 AbstractCegarLoop]: Abstraction has 7319 states and 10603 transitions. [2022-11-22 00:38:53,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-22 00:38:53,812 INFO L276 IsEmpty]: Start isEmpty. Operand 7319 states and 10603 transitions. [2022-11-22 00:38:53,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-22 00:38:53,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:38:53,814 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:38:53,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 00:38:53,815 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:38:53,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:38:53,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1167013040, now seen corresponding path program 1 times [2022-11-22 00:38:53,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:38:53,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984786374] [2022-11-22 00:38:53,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:38:53,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:38:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:38:55,370 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-22 00:38:55,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:38:55,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984786374] [2022-11-22 00:38:55,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984786374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:38:55,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:38:55,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:38:55,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83639062] [2022-11-22 00:38:55,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:38:55,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:38:55,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:38:55,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:38:55,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:38:55,373 INFO L87 Difference]: Start difference. First operand 7319 states and 10603 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-22 00:38:57,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:39:05,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:39:05,690 INFO L93 Difference]: Finished difference Result 7329 states and 10612 transitions. [2022-11-22 00:39:05,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:39:05,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 76 [2022-11-22 00:39:05,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:39:05,733 INFO L225 Difference]: With dead ends: 7329 [2022-11-22 00:39:05,733 INFO L226 Difference]: Without dead ends: 7327 [2022-11-22 00:39:05,740 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:39:05,740 INFO L413 NwaCegarLoop]: 3709 mSDtfsCounter, 4073 mSDsluCounter, 7392 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4083 SdHoareTripleChecker+Valid, 11101 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:39:05,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4083 Valid, 11101 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1202 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2022-11-22 00:39:05,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7327 states. [2022-11-22 00:39:06,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7327 to 7327. [2022-11-22 00:39:06,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7327 states, 4113 states have (on average 1.2431315341599805) internal successors, (5113), 4305 states have internal predecessors, (5113), 2677 states have call successors, (2677), 551 states have call predecessors, (2677), 534 states have return successors, (2819), 2608 states have call predecessors, (2819), 2671 states have call successors, (2819) [2022-11-22 00:39:06,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7327 states to 7327 states and 10609 transitions. [2022-11-22 00:39:06,435 INFO L78 Accepts]: Start accepts. Automaton has 7327 states and 10609 transitions. Word has length 76 [2022-11-22 00:39:06,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:39:06,437 INFO L495 AbstractCegarLoop]: Abstraction has 7327 states and 10609 transitions. [2022-11-22 00:39:06,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-22 00:39:06,437 INFO L276 IsEmpty]: Start isEmpty. Operand 7327 states and 10609 transitions. [2022-11-22 00:39:06,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-22 00:39:06,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:39:06,440 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:39:06,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 00:39:06,440 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:39:06,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:39:06,445 INFO L85 PathProgramCache]: Analyzing trace with hash 929804166, now seen corresponding path program 1 times [2022-11-22 00:39:06,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:39:06,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018855322] [2022-11-22 00:39:06,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:39:06,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:39:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:39:07,769 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-22 00:39:07,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:39:07,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018855322] [2022-11-22 00:39:07,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018855322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:39:07,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:39:07,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:39:07,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295161563] [2022-11-22 00:39:07,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:39:07,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:39:07,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:39:07,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:39:07,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:39:07,771 INFO L87 Difference]: Start difference. First operand 7327 states and 10609 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, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-22 00:39:09,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:39:18,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:39:18,436 INFO L93 Difference]: Finished difference Result 7337 states and 10618 transitions. [2022-11-22 00:39:18,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:39:18,437 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, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 80 [2022-11-22 00:39:18,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:39:18,477 INFO L225 Difference]: With dead ends: 7337 [2022-11-22 00:39:18,477 INFO L226 Difference]: Without dead ends: 7335 [2022-11-22 00:39:18,483 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:39:18,484 INFO L413 NwaCegarLoop]: 3709 mSDtfsCounter, 4074 mSDsluCounter, 7392 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4083 SdHoareTripleChecker+Valid, 11101 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:39:18,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4083 Valid, 11101 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1202 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2022-11-22 00:39:18,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7335 states. [2022-11-22 00:39:19,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7335 to 7335. [2022-11-22 00:39:19,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7335 states, 4119 states have (on average 1.2427773731488225) internal successors, (5119), 4311 states have internal predecessors, (5119), 2677 states have call successors, (2677), 553 states have call predecessors, (2677), 536 states have return successors, (2819), 2608 states have call predecessors, (2819), 2671 states have call successors, (2819) [2022-11-22 00:39:19,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7335 states to 7335 states and 10615 transitions. [2022-11-22 00:39:19,207 INFO L78 Accepts]: Start accepts. Automaton has 7335 states and 10615 transitions. Word has length 80 [2022-11-22 00:39:19,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:39:19,208 INFO L495 AbstractCegarLoop]: Abstraction has 7335 states and 10615 transitions. [2022-11-22 00:39:19,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-22 00:39:19,208 INFO L276 IsEmpty]: Start isEmpty. Operand 7335 states and 10615 transitions. [2022-11-22 00:39:19,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-22 00:39:19,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:39:19,212 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:39:19,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 00:39:19,213 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:39:19,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:39:19,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1761238640, now seen corresponding path program 1 times [2022-11-22 00:39:19,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:39:19,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448157318] [2022-11-22 00:39:19,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:39:19,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:39:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:39:20,558 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-22 00:39:20,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:39:20,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448157318] [2022-11-22 00:39:20,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448157318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:39:20,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:39:20,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:39:20,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611491947] [2022-11-22 00:39:20,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:39:20,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:39:20,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:39:20,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:39:20,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:39:20,560 INFO L87 Difference]: Start difference. First operand 7335 states and 10615 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-22 00:39:22,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:39:32,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:39:32,390 INFO L93 Difference]: Finished difference Result 7345 states and 10624 transitions. [2022-11-22 00:39:32,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:39:32,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 86 [2022-11-22 00:39:32,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:39:32,417 INFO L225 Difference]: With dead ends: 7345 [2022-11-22 00:39:32,417 INFO L226 Difference]: Without dead ends: 7343 [2022-11-22 00:39:32,420 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:39:32,421 INFO L413 NwaCegarLoop]: 3709 mSDtfsCounter, 4073 mSDsluCounter, 7392 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4081 SdHoareTripleChecker+Valid, 11101 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:39:32,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4081 Valid, 11101 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1202 Invalid, 1 Unknown, 0 Unchecked, 11.1s Time] [2022-11-22 00:39:32,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7343 states. [2022-11-22 00:39:33,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7343 to 7343. [2022-11-22 00:39:33,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7343 states, 4125 states have (on average 1.2424242424242424) internal successors, (5125), 4317 states have internal predecessors, (5125), 2677 states have call successors, (2677), 555 states have call predecessors, (2677), 538 states have return successors, (2819), 2608 states have call predecessors, (2819), 2671 states have call successors, (2819) [2022-11-22 00:39:33,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7343 states to 7343 states and 10621 transitions. [2022-11-22 00:39:33,141 INFO L78 Accepts]: Start accepts. Automaton has 7343 states and 10621 transitions. Word has length 86 [2022-11-22 00:39:33,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:39:33,142 INFO L495 AbstractCegarLoop]: Abstraction has 7343 states and 10621 transitions. [2022-11-22 00:39:33,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-22 00:39:33,142 INFO L276 IsEmpty]: Start isEmpty. Operand 7343 states and 10621 transitions. [2022-11-22 00:39:33,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-22 00:39:33,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:39:33,144 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:39:33,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 00:39:33,145 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:39:33,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:39:33,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1803018470, now seen corresponding path program 1 times [2022-11-22 00:39:33,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:39:33,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348839382] [2022-11-22 00:39:33,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:39:33,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:39:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:39:34,424 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-22 00:39:34,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:39:34,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348839382] [2022-11-22 00:39:34,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348839382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:39:34,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:39:34,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:39:34,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489244901] [2022-11-22 00:39:34,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:39:34,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:39:34,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:39:34,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:39:34,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:39:34,426 INFO L87 Difference]: Start difference. First operand 7343 states and 10621 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, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 00:39:36,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:39:46,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:39:46,986 INFO L93 Difference]: Finished difference Result 7353 states and 10630 transitions. [2022-11-22 00:39:46,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:39:46,986 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, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 90 [2022-11-22 00:39:46,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:39:47,019 INFO L225 Difference]: With dead ends: 7353 [2022-11-22 00:39:47,019 INFO L226 Difference]: Without dead ends: 7351 [2022-11-22 00:39:47,024 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:39:47,025 INFO L413 NwaCegarLoop]: 3709 mSDtfsCounter, 4074 mSDsluCounter, 7392 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4081 SdHoareTripleChecker+Valid, 11101 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:39:47,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4081 Valid, 11101 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1202 Invalid, 1 Unknown, 0 Unchecked, 11.8s Time] [2022-11-22 00:39:47,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7351 states. [2022-11-22 00:39:47,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7351 to 7351. [2022-11-22 00:39:47,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7351 states, 4131 states have (on average 1.242072137496974) internal successors, (5131), 4323 states have internal predecessors, (5131), 2677 states have call successors, (2677), 557 states have call predecessors, (2677), 540 states have return successors, (2819), 2608 states have call predecessors, (2819), 2671 states have call successors, (2819) [2022-11-22 00:39:47,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7351 states to 7351 states and 10627 transitions. [2022-11-22 00:39:47,862 INFO L78 Accepts]: Start accepts. Automaton has 7351 states and 10627 transitions. Word has length 90 [2022-11-22 00:39:47,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:39:47,863 INFO L495 AbstractCegarLoop]: Abstraction has 7351 states and 10627 transitions. [2022-11-22 00:39:47,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 00:39:47,863 INFO L276 IsEmpty]: Start isEmpty. Operand 7351 states and 10627 transitions. [2022-11-22 00:39:47,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-22 00:39:47,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:39:47,866 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:39:47,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 00:39:47,866 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:39:47,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:39:47,867 INFO L85 PathProgramCache]: Analyzing trace with hash -218945936, now seen corresponding path program 1 times [2022-11-22 00:39:47,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:39:47,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516640527] [2022-11-22 00:39:47,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:39:47,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:39:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:39:49,149 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-11-22 00:39:49,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:39:49,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516640527] [2022-11-22 00:39:49,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516640527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:39:49,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:39:49,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:39:49,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942534855] [2022-11-22 00:39:49,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:39:49,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:39:49,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:39:49,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:39:49,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:39:49,151 INFO L87 Difference]: Start difference. First operand 7351 states and 10627 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 00:39:51,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:40:01,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:40:01,283 INFO L93 Difference]: Finished difference Result 7481 states and 10745 transitions. [2022-11-22 00:40:01,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:40:01,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 96 [2022-11-22 00:40:01,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:40:01,317 INFO L225 Difference]: With dead ends: 7481 [2022-11-22 00:40:01,317 INFO L226 Difference]: Without dead ends: 7479 [2022-11-22 00:40:01,322 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:40:01,323 INFO L413 NwaCegarLoop]: 3731 mSDtfsCounter, 4037 mSDsluCounter, 7498 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4043 SdHoareTripleChecker+Valid, 11229 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:40:01,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4043 Valid, 11229 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1212 Invalid, 1 Unknown, 0 Unchecked, 11.4s Time] [2022-11-22 00:40:01,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7479 states. [2022-11-22 00:40:02,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7479 to 7477. [2022-11-22 00:40:02,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7477 states, 4207 states have (on average 1.2400760637033517) internal successors, (5217), 4401 states have internal predecessors, (5217), 2691 states have call successors, (2691), 593 states have call predecessors, (2691), 576 states have return successors, (2833), 2622 states have call predecessors, (2833), 2685 states have call successors, (2833) [2022-11-22 00:40:02,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7477 states to 7477 states and 10741 transitions. [2022-11-22 00:40:02,123 INFO L78 Accepts]: Start accepts. Automaton has 7477 states and 10741 transitions. Word has length 96 [2022-11-22 00:40:02,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:40:02,124 INFO L495 AbstractCegarLoop]: Abstraction has 7477 states and 10741 transitions. [2022-11-22 00:40:02,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 00:40:02,124 INFO L276 IsEmpty]: Start isEmpty. Operand 7477 states and 10741 transitions. [2022-11-22 00:40:02,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-22 00:40:02,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:40:02,126 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:40:02,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 00:40:02,127 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:40:02,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:40:02,128 INFO L85 PathProgramCache]: Analyzing trace with hash -652150470, now seen corresponding path program 1 times [2022-11-22 00:40:02,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:40:02,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505344203] [2022-11-22 00:40:02,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:40:02,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:40:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:40:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-22 00:40:05,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:40:05,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505344203] [2022-11-22 00:40:05,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505344203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:40:05,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:40:05,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:40:05,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246304949] [2022-11-22 00:40:05,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:40:05,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:40:05,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:40:05,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:40:05,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:40:05,327 INFO L87 Difference]: Start difference. First operand 7477 states and 10741 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-22 00:40:07,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:40:20,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:40:20,168 INFO L93 Difference]: Finished difference Result 7495 states and 10756 transitions. [2022-11-22 00:40:20,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:40:20,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 114 [2022-11-22 00:40:20,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:40:20,206 INFO L225 Difference]: With dead ends: 7495 [2022-11-22 00:40:20,206 INFO L226 Difference]: Without dead ends: 7493 [2022-11-22 00:40:20,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:40:20,214 INFO L413 NwaCegarLoop]: 5009 mSDtfsCounter, 3038 mSDsluCounter, 12343 mSDsCounter, 0 mSdLazyCounter, 1743 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 17352 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1743 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:40:20,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 17352 Invalid, 1746 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1743 Invalid, 1 Unknown, 0 Unchecked, 14.0s Time] [2022-11-22 00:40:20,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7493 states. [2022-11-22 00:40:20,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7493 to 7485. [2022-11-22 00:40:20,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7485 states, 4213 states have (on average 1.2397341561832425) internal successors, (5223), 4407 states have internal predecessors, (5223), 2691 states have call successors, (2691), 595 states have call predecessors, (2691), 578 states have return successors, (2833), 2622 states have call predecessors, (2833), 2685 states have call successors, (2833) [2022-11-22 00:40:20,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7485 states to 7485 states and 10747 transitions. [2022-11-22 00:40:20,924 INFO L78 Accepts]: Start accepts. Automaton has 7485 states and 10747 transitions. Word has length 114 [2022-11-22 00:40:20,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:40:20,924 INFO L495 AbstractCegarLoop]: Abstraction has 7485 states and 10747 transitions. [2022-11-22 00:40:20,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-22 00:40:20,924 INFO L276 IsEmpty]: Start isEmpty. Operand 7485 states and 10747 transitions. [2022-11-22 00:40:20,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-22 00:40:20,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:40:20,926 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 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] [2022-11-22 00:40:20,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 00:40:20,926 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:40:20,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:40:20,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1091597754, now seen corresponding path program 1 times [2022-11-22 00:40:20,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:40:20,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235600502] [2022-11-22 00:40:20,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:40:20,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:40:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:40:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-11-22 00:40:22,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:40:22,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235600502] [2022-11-22 00:40:22,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235600502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:40:22,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:40:22,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:40:22,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98723607] [2022-11-22 00:40:22,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:40:22,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:40:22,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:40:22,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:40:22,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:40:22,307 INFO L87 Difference]: Start difference. First operand 7485 states and 10747 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, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-22 00:40:24,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:40:34,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:40:34,785 INFO L93 Difference]: Finished difference Result 7561 states and 10799 transitions. [2022-11-22 00:40:34,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:40:34,786 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, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 100 [2022-11-22 00:40:34,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:40:34,812 INFO L225 Difference]: With dead ends: 7561 [2022-11-22 00:40:34,812 INFO L226 Difference]: Without dead ends: 7559 [2022-11-22 00:40:34,817 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:40:34,818 INFO L413 NwaCegarLoop]: 3714 mSDtfsCounter, 4019 mSDsluCounter, 7482 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4024 SdHoareTripleChecker+Valid, 11196 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:40:34,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4024 Valid, 11196 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1220 Invalid, 1 Unknown, 0 Unchecked, 11.7s Time] [2022-11-22 00:40:34,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7559 states. [2022-11-22 00:40:35,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7559 to 7557. [2022-11-22 00:40:35,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7557 states, 4257 states have (on average 1.2381959126145172) internal successors, (5271), 4451 states have internal predecessors, (5271), 2691 states have call successors, (2691), 623 states have call predecessors, (2691), 606 states have return successors, (2833), 2622 states have call predecessors, (2833), 2685 states have call successors, (2833) [2022-11-22 00:40:35,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7557 states to 7557 states and 10795 transitions. [2022-11-22 00:40:35,548 INFO L78 Accepts]: Start accepts. Automaton has 7557 states and 10795 transitions. Word has length 100 [2022-11-22 00:40:35,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:40:35,549 INFO L495 AbstractCegarLoop]: Abstraction has 7557 states and 10795 transitions. [2022-11-22 00:40:35,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-22 00:40:35,549 INFO L276 IsEmpty]: Start isEmpty. Operand 7557 states and 10795 transitions. [2022-11-22 00:40:35,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-22 00:40:35,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:40:35,551 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 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] [2022-11-22 00:40:35,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 00:40:35,551 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:40:35,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:40:35,551 INFO L85 PathProgramCache]: Analyzing trace with hash -151661009, now seen corresponding path program 1 times [2022-11-22 00:40:35,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:40:35,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584575843] [2022-11-22 00:40:35,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:40:35,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:40:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:40:36,895 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2022-11-22 00:40:36,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:40:36,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584575843] [2022-11-22 00:40:36,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584575843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:40:36,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:40:36,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:40:36,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907711436] [2022-11-22 00:40:36,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:40:36,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:40:36,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:40:36,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:40:36,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:40:36,900 INFO L87 Difference]: Start difference. First operand 7557 states and 10795 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, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-22 00:40:38,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:40:49,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:40:49,309 INFO L93 Difference]: Finished difference Result 7567 states and 10804 transitions. [2022-11-22 00:40:49,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:40:49,311 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, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 105 [2022-11-22 00:40:49,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:40:49,339 INFO L225 Difference]: With dead ends: 7567 [2022-11-22 00:40:49,339 INFO L226 Difference]: Without dead ends: 7565 [2022-11-22 00:40:49,344 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:40:49,345 INFO L413 NwaCegarLoop]: 3709 mSDtfsCounter, 4074 mSDsluCounter, 7392 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4078 SdHoareTripleChecker+Valid, 11101 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:40:49,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4078 Valid, 11101 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1202 Invalid, 1 Unknown, 0 Unchecked, 11.5s Time] [2022-11-22 00:40:49,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7565 states. [2022-11-22 00:40:50,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7565 to 7565. [2022-11-22 00:40:50,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7565 states, 4263 states have (on average 1.2378606615059817) internal successors, (5277), 4457 states have internal predecessors, (5277), 2691 states have call successors, (2691), 625 states have call predecessors, (2691), 608 states have return successors, (2833), 2622 states have call predecessors, (2833), 2685 states have call successors, (2833) [2022-11-22 00:40:50,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7565 states to 7565 states and 10801 transitions. [2022-11-22 00:40:50,070 INFO L78 Accepts]: Start accepts. Automaton has 7565 states and 10801 transitions. Word has length 105 [2022-11-22 00:40:50,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:40:50,070 INFO L495 AbstractCegarLoop]: Abstraction has 7565 states and 10801 transitions. [2022-11-22 00:40:50,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-22 00:40:50,070 INFO L276 IsEmpty]: Start isEmpty. Operand 7565 states and 10801 transitions. [2022-11-22 00:40:50,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-22 00:40:50,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:40:50,072 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 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] [2022-11-22 00:40:50,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 00:40:50,073 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:40:50,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:40:50,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1541188518, now seen corresponding path program 1 times [2022-11-22 00:40:50,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:40:50,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104485568] [2022-11-22 00:40:50,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:40:50,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:40:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:40:51,200 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2022-11-22 00:40:51,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:40:51,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104485568] [2022-11-22 00:40:51,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104485568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:40:51,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:40:51,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:40:51,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782458176] [2022-11-22 00:40:51,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:40:51,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:40:51,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:40:51,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:40:51,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:40:51,203 INFO L87 Difference]: Start difference. First operand 7565 states and 10801 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, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 00:40:53,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:41:02,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:41:02,612 INFO L93 Difference]: Finished difference Result 7575 states and 10810 transitions. [2022-11-22 00:41:02,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:41:02,612 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, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 110 [2022-11-22 00:41:02,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:41:02,639 INFO L225 Difference]: With dead ends: 7575 [2022-11-22 00:41:02,640 INFO L226 Difference]: Without dead ends: 7573 [2022-11-22 00:41:02,645 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:41:02,646 INFO L413 NwaCegarLoop]: 3709 mSDtfsCounter, 4074 mSDsluCounter, 7392 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4077 SdHoareTripleChecker+Valid, 11101 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:41:02,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4077 Valid, 11101 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1202 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2022-11-22 00:41:02,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7573 states. [2022-11-22 00:41:03,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7573 to 7573. [2022-11-22 00:41:03,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7573 states, 4269 states have (on average 1.2375263527758258) internal successors, (5283), 4463 states have internal predecessors, (5283), 2691 states have call successors, (2691), 627 states have call predecessors, (2691), 610 states have return successors, (2833), 2622 states have call predecessors, (2833), 2685 states have call successors, (2833) [2022-11-22 00:41:03,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7573 states to 7573 states and 10807 transitions. [2022-11-22 00:41:03,430 INFO L78 Accepts]: Start accepts. Automaton has 7573 states and 10807 transitions. Word has length 110 [2022-11-22 00:41:03,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:41:03,430 INFO L495 AbstractCegarLoop]: Abstraction has 7573 states and 10807 transitions. [2022-11-22 00:41:03,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 00:41:03,431 INFO L276 IsEmpty]: Start isEmpty. Operand 7573 states and 10807 transitions. [2022-11-22 00:41:03,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-22 00:41:03,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:41:03,433 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 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] [2022-11-22 00:41:03,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 00:41:03,434 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:41:03,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:41:03,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1337686064, now seen corresponding path program 1 times [2022-11-22 00:41:03,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:41:03,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613006982] [2022-11-22 00:41:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:41:03,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:41:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:41:04,627 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2022-11-22 00:41:04,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:41:04,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613006982] [2022-11-22 00:41:04,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613006982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:41:04,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:41:04,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:41:04,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516398924] [2022-11-22 00:41:04,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:41:04,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:41:04,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:41:04,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:41:04,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:41:04,631 INFO L87 Difference]: Start difference. First operand 7573 states and 10807 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 00:41:06,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:41:16,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:41:16,919 INFO L93 Difference]: Finished difference Result 7583 states and 10816 transitions. [2022-11-22 00:41:16,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:41:16,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 116 [2022-11-22 00:41:16,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:41:16,948 INFO L225 Difference]: With dead ends: 7583 [2022-11-22 00:41:16,948 INFO L226 Difference]: Without dead ends: 7581 [2022-11-22 00:41:16,953 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:41:16,954 INFO L413 NwaCegarLoop]: 3709 mSDtfsCounter, 4073 mSDsluCounter, 7392 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4075 SdHoareTripleChecker+Valid, 11101 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:41:16,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4075 Valid, 11101 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1202 Invalid, 1 Unknown, 0 Unchecked, 11.4s Time] [2022-11-22 00:41:16,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7581 states. [2022-11-22 00:41:17,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7581 to 7581. [2022-11-22 00:41:17,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7581 states, 4275 states have (on average 1.2371929824561403) internal successors, (5289), 4469 states have internal predecessors, (5289), 2691 states have call successors, (2691), 629 states have call predecessors, (2691), 612 states have return successors, (2833), 2622 states have call predecessors, (2833), 2685 states have call successors, (2833) [2022-11-22 00:41:17,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7581 states to 7581 states and 10813 transitions. [2022-11-22 00:41:17,705 INFO L78 Accepts]: Start accepts. Automaton has 7581 states and 10813 transitions. Word has length 116 [2022-11-22 00:41:17,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:41:17,706 INFO L495 AbstractCegarLoop]: Abstraction has 7581 states and 10813 transitions. [2022-11-22 00:41:17,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 00:41:17,706 INFO L276 IsEmpty]: Start isEmpty. Operand 7581 states and 10813 transitions. [2022-11-22 00:41:17,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-22 00:41:17,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:41:17,709 INFO L195 NwaCegarLoop]: 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] [2022-11-22 00:41:17,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 00:41:17,710 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:41:17,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:41:17,710 INFO L85 PathProgramCache]: Analyzing trace with hash 2004083255, now seen corresponding path program 1 times [2022-11-22 00:41:17,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:41:17,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626653322] [2022-11-22 00:41:17,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:41:17,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:41:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:41:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-22 00:41:20,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:41:20,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626653322] [2022-11-22 00:41:20,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626653322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:41:20,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:41:20,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:41:20,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498737396] [2022-11-22 00:41:20,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:41:20,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:41:20,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:41:20,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:41:20,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:41:20,207 INFO L87 Difference]: Start difference. First operand 7581 states and 10813 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 00:41:22,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:41:35,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:41:35,879 INFO L93 Difference]: Finished difference Result 7601 states and 10829 transitions. [2022-11-22 00:41:35,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:41:35,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 137 [2022-11-22 00:41:35,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:41:35,905 INFO L225 Difference]: With dead ends: 7601 [2022-11-22 00:41:35,905 INFO L226 Difference]: Without dead ends: 7599 [2022-11-22 00:41:35,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:41:35,911 INFO L413 NwaCegarLoop]: 4732 mSDtfsCounter, 3912 mSDsluCounter, 12694 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3917 SdHoareTripleChecker+Valid, 17426 SdHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:41:35,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3917 Valid, 17426 Invalid, 1610 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1606 Invalid, 1 Unknown, 0 Unchecked, 14.5s Time] [2022-11-22 00:41:35,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7599 states. [2022-11-22 00:41:36,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7599 to 7589. [2022-11-22 00:41:36,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7589 states, 4281 states have (on average 1.2368605466012614) internal successors, (5295), 4475 states have internal predecessors, (5295), 2691 states have call successors, (2691), 631 states have call predecessors, (2691), 614 states have return successors, (2833), 2622 states have call predecessors, (2833), 2685 states have call successors, (2833) [2022-11-22 00:41:36,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7589 states to 7589 states and 10819 transitions. [2022-11-22 00:41:36,565 INFO L78 Accepts]: Start accepts. Automaton has 7589 states and 10819 transitions. Word has length 137 [2022-11-22 00:41:36,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:41:36,565 INFO L495 AbstractCegarLoop]: Abstraction has 7589 states and 10819 transitions. [2022-11-22 00:41:36,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 00:41:36,565 INFO L276 IsEmpty]: Start isEmpty. Operand 7589 states and 10819 transitions. [2022-11-22 00:41:36,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-22 00:41:36,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:41:36,568 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 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] [2022-11-22 00:41:36,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-22 00:41:36,569 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:41:36,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:41:36,569 INFO L85 PathProgramCache]: Analyzing trace with hash 691753413, now seen corresponding path program 1 times [2022-11-22 00:41:36,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:41:36,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810645499] [2022-11-22 00:41:36,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:41:36,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:41:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:41:37,746 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-22 00:41:37,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:41:37,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810645499] [2022-11-22 00:41:37,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810645499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:41:37,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:41:37,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:41:37,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680256150] [2022-11-22 00:41:37,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:41:37,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:41:37,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:41:37,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:41:37,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:41:37,749 INFO L87 Difference]: Start difference. First operand 7589 states and 10819 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 00:41:39,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:41:51,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:41:51,791 INFO L93 Difference]: Finished difference Result 7633 states and 10855 transitions. [2022-11-22 00:41:51,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:41:51,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 121 [2022-11-22 00:41:51,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:41:51,822 INFO L225 Difference]: With dead ends: 7633 [2022-11-22 00:41:51,822 INFO L226 Difference]: Without dead ends: 7629 [2022-11-22 00:41:51,827 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:41:51,828 INFO L413 NwaCegarLoop]: 3709 mSDtfsCounter, 4045 mSDsluCounter, 7422 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4046 SdHoareTripleChecker+Valid, 11131 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:41:51,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4046 Valid, 11131 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1207 Invalid, 1 Unknown, 0 Unchecked, 13.0s Time] [2022-11-22 00:41:51,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7629 states. [2022-11-22 00:41:52,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7629 to 7627. [2022-11-22 00:41:52,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7627 states, 4308 states have (on average 1.2360724233983287) internal successors, (5325), 4501 states have internal predecessors, (5325), 2691 states have call successors, (2691), 643 states have call predecessors, (2691), 625 states have return successors, (2833), 2622 states have call predecessors, (2833), 2685 states have call successors, (2833) [2022-11-22 00:41:52,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7627 states to 7627 states and 10849 transitions. [2022-11-22 00:41:52,542 INFO L78 Accepts]: Start accepts. Automaton has 7627 states and 10849 transitions. Word has length 121 [2022-11-22 00:41:52,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:41:52,542 INFO L495 AbstractCegarLoop]: Abstraction has 7627 states and 10849 transitions. [2022-11-22 00:41:52,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 00:41:52,542 INFO L276 IsEmpty]: Start isEmpty. Operand 7627 states and 10849 transitions. [2022-11-22 00:41:52,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-22 00:41:52,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:41:52,545 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 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] [2022-11-22 00:41:52,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-22 00:41:52,546 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:41:52,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:41:52,547 INFO L85 PathProgramCache]: Analyzing trace with hash 456602223, now seen corresponding path program 1 times [2022-11-22 00:41:52,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:41:52,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345590580] [2022-11-22 00:41:52,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:41:52,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:41:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:41:53,879 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2022-11-22 00:41:53,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:41:53,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345590580] [2022-11-22 00:41:53,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345590580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:41:53,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:41:53,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:41:53,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416000252] [2022-11-22 00:41:53,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:41:53,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:41:53,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:41:53,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:41:53,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:41:53,882 INFO L87 Difference]: Start difference. First operand 7627 states and 10849 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, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 00:41:55,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:42:05,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:42:05,967 INFO L93 Difference]: Finished difference Result 7633 states and 10854 transitions. [2022-11-22 00:42:05,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:42:05,967 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, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 125 [2022-11-22 00:42:05,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:42:05,998 INFO L225 Difference]: With dead ends: 7633 [2022-11-22 00:42:05,998 INFO L226 Difference]: Without dead ends: 7429 [2022-11-22 00:42:06,003 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:42:06,004 INFO L413 NwaCegarLoop]: 3710 mSDtfsCounter, 4074 mSDsluCounter, 7394 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4074 SdHoareTripleChecker+Valid, 11104 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:42:06,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4074 Valid, 11104 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1199 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2022-11-22 00:42:06,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7429 states. [2022-11-22 00:42:06,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7429 to 7429. [2022-11-22 00:42:06,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7429 states, 4192 states have (on average 1.2416507633587786) internal successors, (5205), 4383 states have internal predecessors, (5205), 2645 states have call successors, (2645), 606 states have call predecessors, (2645), 589 states have return successors, (2790), 2579 states have call predecessors, (2790), 2642 states have call successors, (2790) [2022-11-22 00:42:07,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7429 states to 7429 states and 10640 transitions. [2022-11-22 00:42:07,002 INFO L78 Accepts]: Start accepts. Automaton has 7429 states and 10640 transitions. Word has length 125 [2022-11-22 00:42:07,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:42:07,002 INFO L495 AbstractCegarLoop]: Abstraction has 7429 states and 10640 transitions. [2022-11-22 00:42:07,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 00:42:07,003 INFO L276 IsEmpty]: Start isEmpty. Operand 7429 states and 10640 transitions. [2022-11-22 00:42:07,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-22 00:42:07,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:42:07,006 INFO L195 NwaCegarLoop]: 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] [2022-11-22 00:42:07,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-22 00:42:07,006 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:42:07,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:42:07,007 INFO L85 PathProgramCache]: Analyzing trace with hash 735451456, now seen corresponding path program 1 times [2022-11-22 00:42:07,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:42:07,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435770798] [2022-11-22 00:42:07,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:42:07,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:42:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:42:07,969 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-22 00:42:07,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:42:07,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435770798] [2022-11-22 00:42:07,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435770798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:42:07,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:42:07,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:42:07,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337203234] [2022-11-22 00:42:07,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:42:07,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:42:07,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:42:07,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:42:07,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:42:07,973 INFO L87 Difference]: Start difference. First operand 7429 states and 10640 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 00:42:10,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:42:20,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:42:20,194 INFO L93 Difference]: Finished difference Result 14852 states and 21281 transitions. [2022-11-22 00:42:20,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:42:20,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 150 [2022-11-22 00:42:20,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:42:20,235 INFO L225 Difference]: With dead ends: 14852 [2022-11-22 00:42:20,235 INFO L226 Difference]: Without dead ends: 7437 [2022-11-22 00:42:20,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:42:20,282 INFO L413 NwaCegarLoop]: 3663 mSDtfsCounter, 10 mSDsluCounter, 7308 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 10971 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:42:20,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 10971 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1191 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2022-11-22 00:42:20,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7437 states. [2022-11-22 00:42:21,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7437 to 7433. [2022-11-22 00:42:21,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7433 states, 4194 states have (on average 1.2415355269432522) internal successors, (5207), 4387 states have internal predecessors, (5207), 2645 states have call successors, (2645), 606 states have call predecessors, (2645), 591 states have return successors, (2792), 2579 states have call predecessors, (2792), 2642 states have call successors, (2792) [2022-11-22 00:42:21,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7433 states to 7433 states and 10644 transitions. [2022-11-22 00:42:21,429 INFO L78 Accepts]: Start accepts. Automaton has 7433 states and 10644 transitions. Word has length 150 [2022-11-22 00:42:21,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:42:21,430 INFO L495 AbstractCegarLoop]: Abstraction has 7433 states and 10644 transitions. [2022-11-22 00:42:21,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 00:42:21,430 INFO L276 IsEmpty]: Start isEmpty. Operand 7433 states and 10644 transitions. [2022-11-22 00:42:21,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-22 00:42:21,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:42:21,433 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 3, 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] [2022-11-22 00:42:21,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-22 00:42:21,434 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:42:21,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:42:21,434 INFO L85 PathProgramCache]: Analyzing trace with hash -853362942, now seen corresponding path program 1 times [2022-11-22 00:42:21,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:42:21,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835753767] [2022-11-22 00:42:21,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:42:21,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:42:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:42:22,294 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-22 00:42:22,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:42:22,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835753767] [2022-11-22 00:42:22,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835753767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:42:22,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:42:22,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:42:22,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906916246] [2022-11-22 00:42:22,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:42:22,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:42:22,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:42:22,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:42:22,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:42:22,297 INFO L87 Difference]: Start difference. First operand 7433 states and 10644 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 00:42:24,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:42:31,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:42:31,859 INFO L93 Difference]: Finished difference Result 14717 states and 21243 transitions. [2022-11-22 00:42:31,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:42:31,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 151 [2022-11-22 00:42:31,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:42:31,886 INFO L225 Difference]: With dead ends: 14717 [2022-11-22 00:42:31,886 INFO L226 Difference]: Without dead ends: 7298 [2022-11-22 00:42:31,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:42:31,910 INFO L413 NwaCegarLoop]: 3666 mSDtfsCounter, 1 mSDsluCounter, 3663 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7329 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:42:31,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7329 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 789 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2022-11-22 00:42:31,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7298 states. [2022-11-22 00:42:32,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7298 to 7296. [2022-11-22 00:42:32,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7296 states, 4120 states have (on average 1.2402912621359223) internal successors, (5110), 4308 states have internal predecessors, (5110), 2587 states have call successors, (2587), 601 states have call predecessors, (2587), 586 states have return successors, (2718), 2522 states have call predecessors, (2718), 2584 states have call successors, (2718) [2022-11-22 00:42:32,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7296 states to 7296 states and 10415 transitions. [2022-11-22 00:42:32,573 INFO L78 Accepts]: Start accepts. Automaton has 7296 states and 10415 transitions. Word has length 151 [2022-11-22 00:42:32,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:42:32,573 INFO L495 AbstractCegarLoop]: Abstraction has 7296 states and 10415 transitions. [2022-11-22 00:42:32,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 00:42:32,574 INFO L276 IsEmpty]: Start isEmpty. Operand 7296 states and 10415 transitions. [2022-11-22 00:42:32,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-22 00:42:32,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:42:32,577 INFO L195 NwaCegarLoop]: 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] [2022-11-22 00:42:32,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-22 00:42:32,577 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:42:32,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:42:32,578 INFO L85 PathProgramCache]: Analyzing trace with hash 10805589, now seen corresponding path program 1 times [2022-11-22 00:42:32,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:42:32,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44447483] [2022-11-22 00:42:32,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:42:32,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:42:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:42:33,282 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-22 00:42:33,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:42:33,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44447483] [2022-11-22 00:42:33,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44447483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:42:33,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:42:33,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:42:33,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087663156] [2022-11-22 00:42:33,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:42:33,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:42:33,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:42:33,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:42:33,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:42:33,284 INFO L87 Difference]: Start difference. First operand 7296 states and 10415 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 00:42:35,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:42:42,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:42:42,854 INFO L93 Difference]: Finished difference Result 14856 states and 21266 transitions. [2022-11-22 00:42:42,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:42:42,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 153 [2022-11-22 00:42:42,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:42:42,883 INFO L225 Difference]: With dead ends: 14856 [2022-11-22 00:42:42,883 INFO L226 Difference]: Without dead ends: 7574 [2022-11-22 00:42:42,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:42:42,905 INFO L413 NwaCegarLoop]: 3724 mSDtfsCounter, 242 mSDsluCounter, 3511 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 7235 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:42:42,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 7235 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 773 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2022-11-22 00:42:42,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7574 states. [2022-11-22 00:42:43,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7574 to 7304. [2022-11-22 00:42:43,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7304 states, 4126 states have (on average 1.240426563257392) internal successors, (5118), 4315 states have internal predecessors, (5118), 2588 states have call successors, (2588), 601 states have call predecessors, (2588), 587 states have return successors, (2721), 2523 states have call predecessors, (2721), 2585 states have call successors, (2721) [2022-11-22 00:42:43,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7304 states to 7304 states and 10427 transitions. [2022-11-22 00:42:43,861 INFO L78 Accepts]: Start accepts. Automaton has 7304 states and 10427 transitions. Word has length 153 [2022-11-22 00:42:43,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:42:43,862 INFO L495 AbstractCegarLoop]: Abstraction has 7304 states and 10427 transitions. [2022-11-22 00:42:43,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 00:42:43,862 INFO L276 IsEmpty]: Start isEmpty. Operand 7304 states and 10427 transitions. [2022-11-22 00:42:43,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-22 00:42:43,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:42:43,865 INFO L195 NwaCegarLoop]: 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] [2022-11-22 00:42:43,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-22 00:42:43,866 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:42:43,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:42:43,867 INFO L85 PathProgramCache]: Analyzing trace with hash -2115442812, now seen corresponding path program 1 times [2022-11-22 00:42:43,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:42:43,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537157035] [2022-11-22 00:42:43,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:42:43,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:42:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:42:44,682 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-22 00:42:44,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:42:44,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537157035] [2022-11-22 00:42:44,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537157035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:42:44,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:42:44,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:42:44,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997881768] [2022-11-22 00:42:44,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:42:44,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:42:44,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:42:44,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:42:44,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:42:44,684 INFO L87 Difference]: Start difference. First operand 7304 states and 10427 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-22 00:42:46,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:42:53,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:42:53,680 INFO L93 Difference]: Finished difference Result 14653 states and 20958 transitions. [2022-11-22 00:42:53,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:42:53,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 154 [2022-11-22 00:42:53,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:42:53,725 INFO L225 Difference]: With dead ends: 14653 [2022-11-22 00:42:53,725 INFO L226 Difference]: Without dead ends: 7363 [2022-11-22 00:42:53,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:42:53,761 INFO L413 NwaCegarLoop]: 3688 mSDtfsCounter, 26 mSDsluCounter, 3670 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 7358 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:42:53,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 7358 Invalid, 793 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 792 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2022-11-22 00:42:53,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7363 states. [2022-11-22 00:42:54,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7363 to 7306. [2022-11-22 00:42:54,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7306 states, 4128 states have (on average 1.2403100775193798) internal successors, (5120), 4317 states have internal predecessors, (5120), 2588 states have call successors, (2588), 601 states have call predecessors, (2588), 587 states have return successors, (2721), 2523 states have call predecessors, (2721), 2585 states have call successors, (2721) [2022-11-22 00:42:54,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7306 states to 7306 states and 10429 transitions. [2022-11-22 00:42:54,641 INFO L78 Accepts]: Start accepts. Automaton has 7306 states and 10429 transitions. Word has length 154 [2022-11-22 00:42:54,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:42:54,641 INFO L495 AbstractCegarLoop]: Abstraction has 7306 states and 10429 transitions. [2022-11-22 00:42:54,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-22 00:42:54,642 INFO L276 IsEmpty]: Start isEmpty. Operand 7306 states and 10429 transitions. [2022-11-22 00:42:54,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-22 00:42:54,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:42:54,643 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:42:54,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-22 00:42:54,643 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:42:54,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:42:54,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1300068114, now seen corresponding path program 1 times [2022-11-22 00:42:54,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:42:54,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475918426] [2022-11-22 00:42:54,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:42:54,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:42:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:42:56,658 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-22 00:42:56,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:42:56,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475918426] [2022-11-22 00:42:56,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475918426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:42:56,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:42:56,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:42:56,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224199683] [2022-11-22 00:42:56,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:42:56,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:42:56,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:42:56,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:42:56,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:42:56,661 INFO L87 Difference]: Start difference. First operand 7306 states and 10429 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 00:42:58,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:43:09,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:43:09,417 INFO L93 Difference]: Finished difference Result 7326 states and 10447 transitions. [2022-11-22 00:43:09,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:43:09,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 155 [2022-11-22 00:43:09,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:43:09,453 INFO L225 Difference]: With dead ends: 7326 [2022-11-22 00:43:09,453 INFO L226 Difference]: Without dead ends: 7324 [2022-11-22 00:43:09,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:43:09,461 INFO L413 NwaCegarLoop]: 3667 mSDtfsCounter, 3973 mSDsluCounter, 7352 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3978 SdHoareTripleChecker+Valid, 11019 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:43:09,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3978 Valid, 11019 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1193 Invalid, 1 Unknown, 0 Unchecked, 11.7s Time] [2022-11-22 00:43:09,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7324 states. [2022-11-22 00:43:10,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7324 to 7322. [2022-11-22 00:43:10,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7322 states, 4140 states have (on average 1.2396135265700483) internal successors, (5132), 4329 states have internal predecessors, (5132), 2588 states have call successors, (2588), 605 states have call predecessors, (2588), 591 states have return successors, (2721), 2523 states have call predecessors, (2721), 2585 states have call successors, (2721) [2022-11-22 00:43:10,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 10441 transitions. [2022-11-22 00:43:10,412 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 10441 transitions. Word has length 155 [2022-11-22 00:43:10,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:43:10,413 INFO L495 AbstractCegarLoop]: Abstraction has 7322 states and 10441 transitions. [2022-11-22 00:43:10,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 00:43:10,413 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 10441 transitions. [2022-11-22 00:43:10,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-22 00:43:10,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:43:10,416 INFO L195 NwaCegarLoop]: 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, 1, 1, 1] [2022-11-22 00:43:10,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-22 00:43:10,416 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:43:10,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:43:10,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1901511884, now seen corresponding path program 1 times [2022-11-22 00:43:10,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:43:10,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059643231] [2022-11-22 00:43:10,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:43:10,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:43:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:43:11,576 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-22 00:43:11,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:43:11,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059643231] [2022-11-22 00:43:11,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059643231] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:43:11,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507380060] [2022-11-22 00:43:11,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:43:11,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:43:11,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bd10d1-2f24-4770-bd39-e15b64de2622/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:43:11,581 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bd10d1-2f24-4770-bd39-e15b64de2622/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:43:11,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bd10d1-2f24-4770-bd39-e15b64de2622/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:43:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:43:16,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 5734 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 00:43:16,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:43:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-22 00:43:16,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:43:16,497 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-22 00:43:16,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507380060] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:43:16,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [382820023] [2022-11-22 00:43:16,524 INFO L159 IcfgInterpreter]: Started Sifa with 104 locations of interest [2022-11-22 00:43:16,524 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:43:16,528 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:43:16,536 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:43:16,536 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:43:28,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:43:28,449 INFO L217 Elim1Store]: Index analysis took 297 ms [2022-11-22 00:45:24,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 51 select indices, 51 select index equivalence classes, 1326 disjoint index pairs (out of 1275 index pairs), introduced 51 new quantified variables, introduced 0 case distinctions, treesize of input 5105 treesize of output 4367