./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_513fc78a-92b6-4b58-9fef-5b574245a5c9/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_513fc78a-92b6-4b58-9fef-5b574245a5c9/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_513fc78a-92b6-4b58-9fef-5b574245a5c9/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_513fc78a-92b6-4b58-9fef-5b574245a5c9/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_513fc78a-92b6-4b58-9fef-5b574245a5c9/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_513fc78a-92b6-4b58-9fef-5b574245a5c9/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 a17c24f91a3bb3d64b949ed6598dfddc35ec4ff57290faa768ce9df2bba8e700 --- 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 01:31:58,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:31:58,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:31:58,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:31:58,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:31:58,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:31:58,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:31:58,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:31:58,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:31:58,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:31:58,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:31:58,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:31:58,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:31:58,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:31:58,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:31:58,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:31:58,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:31:58,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:31:58,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:31:58,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:31:58,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:31:58,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:31:58,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:31:58,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:31:58,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:31:58,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:31:58,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:31:58,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:31:58,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:31:58,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:31:58,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:31:58,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:31:58,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:31:58,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:31:59,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:31:59,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:31:59,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:31:59,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:31:59,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:31:59,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:31:59,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:31:59,005 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_513fc78a-92b6-4b58-9fef-5b574245a5c9/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:31:59,029 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:31:59,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:31:59,030 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:31:59,030 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:31:59,031 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:31:59,031 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:31:59,032 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:31:59,032 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:31:59,032 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:31:59,032 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:31:59,033 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:31:59,033 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:31:59,033 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:31:59,033 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:31:59,034 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:31:59,034 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:31:59,034 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:31:59,034 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:31:59,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:31:59,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:31:59,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:31:59,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:31:59,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:31:59,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:31:59,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:31:59,037 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:31:59,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:31:59,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:31:59,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:31:59,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:31:59,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:31:59,039 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:31:59,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:31:59,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:31:59,039 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:31:59,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:31:59,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:31:59,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:31:59,040 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_513fc78a-92b6-4b58-9fef-5b574245a5c9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_513fc78a-92b6-4b58-9fef-5b574245a5c9/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a17c24f91a3bb3d64b949ed6598dfddc35ec4ff57290faa768ce9df2bba8e700 [2022-11-22 01:31:59,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:31:59,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:31:59,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:31:59,372 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:31:59,373 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:31:59,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_513fc78a-92b6-4b58-9fef-5b574245a5c9/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i [2022-11-22 01:32:02,614 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:32:03,382 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:32:03,383 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_513fc78a-92b6-4b58-9fef-5b574245a5c9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i [2022-11-22 01:32:03,445 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_513fc78a-92b6-4b58-9fef-5b574245a5c9/bin/utaipan-g80aRyZoba/data/abaa06e22/67e6d42a147e4dae91a346240f1a7705/FLAG2103a3cc9 [2022-11-22 01:32:03,464 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_513fc78a-92b6-4b58-9fef-5b574245a5c9/bin/utaipan-g80aRyZoba/data/abaa06e22/67e6d42a147e4dae91a346240f1a7705 [2022-11-22 01:32:03,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:32:03,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:32:03,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:32:03,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:32:03,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:32:03,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:32:03" (1/1) ... [2022-11-22 01:32:03,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d5ccd1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:32:03, skipping insertion in model container [2022-11-22 01:32:03,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:32:03" (1/1) ... [2022-11-22 01:32:03,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:32:03,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:32:07,930 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_513fc78a-92b6-4b58-9fef-5b574245a5c9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396127,396140] [2022-11-22 01:32:07,935 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_513fc78a-92b6-4b58-9fef-5b574245a5c9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396296,396309] [2022-11-22 01:32:07,936 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_513fc78a-92b6-4b58-9fef-5b574245a5c9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396463,396476] [2022-11-22 01:32:07,937 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_513fc78a-92b6-4b58-9fef-5b574245a5c9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396631,396644] [2022-11-22 01:32:07,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:32:08,047 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:32:08,635 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_513fc78a-92b6-4b58-9fef-5b574245a5c9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396127,396140] [2022-11-22 01:32:08,636 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_513fc78a-92b6-4b58-9fef-5b574245a5c9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396296,396309] [2022-11-22 01:32:08,637 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_513fc78a-92b6-4b58-9fef-5b574245a5c9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396463,396476] [2022-11-22 01:32:08,637 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_513fc78a-92b6-4b58-9fef-5b574245a5c9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396631,396644] [2022-11-22 01:32:08,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:32:08,946 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:32:08,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:32:08 WrapperNode [2022-11-22 01:32:08,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:32:08,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:32:08,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:32:08,950 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:32:08,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:32:08" (1/1) ... [2022-11-22 01:32:09,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:32:08" (1/1) ... [2022-11-22 01:32:09,313 INFO L138 Inliner]: procedures = 537, calls = 2748, calls flagged for inlining = 264, calls inlined = 238, statements flattened = 6330 [2022-11-22 01:32:09,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:32:09,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:32:09,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:32:09,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:32:09,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:32:08" (1/1) ... [2022-11-22 01:32:09,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:32:08" (1/1) ... [2022-11-22 01:32:09,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:32:08" (1/1) ... [2022-11-22 01:32:09,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:32:08" (1/1) ... [2022-11-22 01:32:09,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:32:08" (1/1) ... [2022-11-22 01:32:09,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:32:08" (1/1) ... [2022-11-22 01:32:09,574 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:32:08" (1/1) ... [2022-11-22 01:32:09,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:32:08" (1/1) ... [2022-11-22 01:32:09,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:32:09,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:32:09,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:32:09,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:32:09,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:32:08" (1/1) ... [2022-11-22 01:32:09,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:32:09,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_513fc78a-92b6-4b58-9fef-5b574245a5c9/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:32:09,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_513fc78a-92b6-4b58-9fef-5b574245a5c9/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:32:09,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_513fc78a-92b6-4b58-9fef-5b574245a5c9/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:32:09,857 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-22 01:32:09,857 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-22 01:32:09,858 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_get_eeprom_len [2022-11-22 01:32:09,858 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_get_eeprom_len [2022-11-22 01:32:09,859 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-22 01:32:09,859 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-22 01:32:09,859 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_nway_reset [2022-11-22 01:32:09,859 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_nway_reset [2022-11-22 01:32:09,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 01:32:09,860 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 01:32:09,860 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 01:32:09,860 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 01:32:09,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_87 [2022-11-22 01:32:09,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_87 [2022-11-22 01:32:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 01:32:09,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 01:32:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2022-11-22 01:32:09,861 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2022-11-22 01:32:09,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 01:32:09,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 01:32:09,863 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-22 01:32:09,863 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-22 01:32:09,864 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 01:32:09,864 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 01:32:09,864 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-22 01:32:09,865 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-22 01:32:09,865 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-11-22 01:32:09,865 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-11-22 01:32:09,865 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_free_irq [2022-11-22 01:32:09,865 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_free_irq [2022-11-22 01:32:09,865 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-22 01:32:09,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-22 01:32:09,866 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-22 01:32:09,866 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-22 01:32:09,867 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_close [2022-11-22 01:32:09,867 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_close [2022-11-22 01:32:09,867 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_get_speed_and_duplex [2022-11-22 01:32:09,867 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_get_speed_and_duplex [2022-11-22 01:32:09,867 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_force_ps [2022-11-22 01:32:09,867 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_force_ps [2022-11-22 01:32:09,868 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-22 01:32:09,868 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-22 01:32:09,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 01:32:09,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 01:32:09,869 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 01:32:09,870 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 01:32:09,870 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-22 01:32:09,870 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-22 01:32:09,870 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 01:32:09,870 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 01:32:09,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 01:32:09,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 01:32:09,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:32:09,871 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-22 01:32:09,872 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-22 01:32:09,872 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2022-11-22 01:32:09,872 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2022-11-22 01:32:09,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2022-11-22 01:32:09,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2022-11-22 01:32:09,873 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_write_phy_reg [2022-11-22 01:32:09,873 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_write_phy_reg [2022-11-22 01:32:09,873 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-22 01:32:09,873 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-22 01:32:09,873 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_vlan_mode [2022-11-22 01:32:09,874 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_vlan_mode [2022-11-22 01:32:09,874 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-22 01:32:09,874 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-22 01:32:09,874 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_up [2022-11-22 01:32:09,874 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_up [2022-11-22 01:32:09,875 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 01:32:09,875 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 01:32:09,875 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-22 01:32:09,875 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-22 01:32:09,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 01:32:09,875 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_tx_timeout [2022-11-22 01:32:09,876 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_tx_timeout [2022-11-22 01:32:09,876 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_irq_enable [2022-11-22 01:32:09,876 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_irq_enable [2022-11-22 01:32:09,876 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 01:32:09,877 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 01:32:09,877 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_poll_controller [2022-11-22 01:32:09,877 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_poll_controller [2022-11-22 01:32:09,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 01:32:09,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 01:32:09,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 01:32:09,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:32:09,878 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_irq_disable [2022-11-22 01:32:09,878 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_irq_disable [2022-11-22 01:32:09,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 01:32:09,878 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 01:32:09,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_stats_lock_of_atl2_adapter [2022-11-22 01:32:09,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_stats_lock_of_atl2_adapter [2022-11-22 01:32:09,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-22 01:32:09,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-22 01:32:09,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 01:32:09,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 01:32:09,880 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2022-11-22 01:32:09,880 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2022-11-22 01:32:09,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 01:32:09,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 01:32:09,881 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-22 01:32:09,881 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-22 01:32:09,881 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_shutdown [2022-11-22 01:32:09,881 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_shutdown [2022-11-22 01:32:09,881 INFO L130 BoogieDeclarations]: Found specification of procedure __atl2_vlan_mode [2022-11-22 01:32:09,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __atl2_vlan_mode [2022-11-22 01:32:09,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 01:32:09,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 01:32:09,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:32:09,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 01:32:09,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 01:32:09,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 01:32:09,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 01:32:09,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-22 01:32:09,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-22 01:32:09,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:32:09,884 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-22 01:32:09,884 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-22 01:32:09,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 01:32:09,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 01:32:09,885 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 01:32:09,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 01:32:09,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:32:09,885 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-22 01:32:09,885 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_set_multi [2022-11-22 01:32:09,886 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_set_multi [2022-11-22 01:32:09,886 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_phy_init [2022-11-22 01:32:09,886 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_phy_init [2022-11-22 01:32:09,886 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-22 01:32:09,886 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-22 01:32:09,886 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_configure [2022-11-22 01:32:09,887 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_configure [2022-11-22 01:32:09,887 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_reset_hw [2022-11-22 01:32:09,887 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_reset_hw [2022-11-22 01:32:09,888 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-22 01:32:09,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-22 01:32:09,888 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-22 01:32:09,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-22 01:32:09,888 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_open [2022-11-22 01:32:09,888 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_open [2022-11-22 01:32:09,889 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 01:32:09,889 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 01:32:09,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 01:32:09,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 01:32:09,889 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_validate_option [2022-11-22 01:32:09,889 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_validate_option [2022-11-22 01:32:09,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_stats_lock_of_atl2_adapter [2022-11-22 01:32:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_stats_lock_of_atl2_adapter [2022-11-22 01:32:09,890 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 01:32:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 01:32:09,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:32:09,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:32:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_intr [2022-11-22 01:32:09,891 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_intr [2022-11-22 01:32:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-22 01:32:09,891 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-22 01:32:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 01:32:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 01:32:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 01:32:09,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 01:32:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 01:32:09,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 01:32:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-22 01:32:09,893 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-22 01:32:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-22 01:32:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-22 01:32:09,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-22 01:32:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_remove [2022-11-22 01:32:09,894 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_remove [2022-11-22 01:32:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_read_eeprom [2022-11-22 01:32:09,894 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_read_eeprom [2022-11-22 01:32:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-22 01:32:09,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-22 01:32:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-22 01:32:09,895 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-22 01:32:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 01:32:09,895 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 01:32:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_request_irq [2022-11-22 01:32:09,895 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_request_irq [2022-11-22 01:32:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 01:32:09,896 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 01:32:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_read_phy_reg [2022-11-22 01:32:09,896 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_read_phy_reg [2022-11-22 01:32:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies [2022-11-22 01:32:09,896 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies [2022-11-22 01:32:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:32:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-22 01:32:09,897 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-22 01:32:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-22 01:32:09,897 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-22 01:32:09,898 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 01:32:09,898 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 01:32:09,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:32:09,898 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-11-22 01:32:09,898 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-11-22 01:32:09,898 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_suspend [2022-11-22 01:32:09,899 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_suspend [2022-11-22 01:32:09,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:32:09,899 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_reinit_locked [2022-11-22 01:32:09,899 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_reinit_locked [2022-11-22 01:32:09,899 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 01:32:09,899 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 01:32:09,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 01:32:09,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 01:32:09,900 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-22 01:32:09,900 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-22 01:32:09,900 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_resume [2022-11-22 01:32:09,901 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_resume [2022-11-22 01:32:09,901 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 01:32:09,901 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 01:32:09,901 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-22 01:32:09,901 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-22 01:32:09,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_77 [2022-11-22 01:32:09,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_77 [2022-11-22 01:32:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 01:32:09,902 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 01:32:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 01:32:09,902 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 01:32:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:32:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 01:32:09,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 01:32:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_get_regs_len [2022-11-22 01:32:09,903 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_get_regs_len [2022-11-22 01:32:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_check_eeprom_exist [2022-11-22 01:32:09,904 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_check_eeprom_exist [2022-11-22 01:32:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-22 01:32:09,904 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-22 01:32:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_restore_vlan [2022-11-22 01:32:09,904 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_restore_vlan [2022-11-22 01:32:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-22 01:32:09,905 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-22 01:32:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_78 [2022-11-22 01:32:09,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_78 [2022-11-22 01:32:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure init_ring_ptrs [2022-11-22 01:32:09,905 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ring_ptrs [2022-11-22 01:32:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-22 01:32:09,906 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-22 01:32:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-22 01:32:09,906 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-22 01:32:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_free_ring_resources [2022-11-22 01:32:09,907 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_free_ring_resources [2022-11-22 01:32:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 01:32:09,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 01:32:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_down [2022-11-22 01:32:09,907 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_down [2022-11-22 01:32:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-22 01:32:09,908 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-22 01:32:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-22 01:32:09,908 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-22 01:32:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-22 01:32:09,908 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-22 01:32:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-22 01:32:09,909 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-22 01:32:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_init_hw [2022-11-22 01:32:09,909 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_init_hw [2022-11-22 01:32:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:32:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 01:32:09,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 01:32:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-22 01:32:11,269 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:32:11,274 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:32:11,533 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 01:32:20,843 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 01:32:21,328 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:32:23,360 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:32:23,360 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-22 01:32:23,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:32:23 BoogieIcfgContainer [2022-11-22 01:32:23,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:32:23,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:32:23,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:32:23,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:32:23,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:32:03" (1/3) ... [2022-11-22 01:32:23,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105f1a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:32:23, skipping insertion in model container [2022-11-22 01:32:23,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:32:08" (2/3) ... [2022-11-22 01:32:23,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105f1a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:32:23, skipping insertion in model container [2022-11-22 01:32:23,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:32:23" (3/3) ... [2022-11-22 01:32:23,379 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i [2022-11-22 01:32:23,399 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:32:23,399 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 01:32:23,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:32:23,521 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;@588837c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:32:23,521 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 01:32:23,534 INFO L276 IsEmpty]: Start isEmpty. Operand has 1758 states, 1012 states have (on average 1.2598814229249011) internal successors, (1275), 1034 states have internal predecessors, (1275), 624 states have call successors, (624), 120 states have call predecessors, (624), 119 states have return successors, (619), 617 states have call predecessors, (619), 619 states have call successors, (619) [2022-11-22 01:32:23,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-22 01:32:23,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:32:23,567 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:32:23,568 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 01:32:23,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:32:23,577 INFO L85 PathProgramCache]: Analyzing trace with hash 734613074, now seen corresponding path program 1 times [2022-11-22 01:32:23,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:32:23,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325608533] [2022-11-22 01:32:23,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:32:23,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:32:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:32:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-22 01:32:24,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:32:24,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325608533] [2022-11-22 01:32:24,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325608533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:32:24,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:32:24,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:32:24,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096514493] [2022-11-22 01:32:24,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:32:24,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:32:24,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:32:24,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:32:24,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:32:24,604 INFO L87 Difference]: Start difference. First operand has 1758 states, 1012 states have (on average 1.2598814229249011) internal successors, (1275), 1034 states have internal predecessors, (1275), 624 states have call successors, (624), 120 states have call predecessors, (624), 119 states have return successors, (619), 617 states have call predecessors, (619), 619 states have call successors, (619) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 01:32:26,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:32:30,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:32:33,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:32:34,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:32:34,800 INFO L93 Difference]: Finished difference Result 5003 states and 7245 transitions. [2022-11-22 01:32:34,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:32:34,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 147 [2022-11-22 01:32:34,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:32:34,849 INFO L225 Difference]: With dead ends: 5003 [2022-11-22 01:32:34,850 INFO L226 Difference]: Without dead ends: 3262 [2022-11-22 01:32:34,867 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 01:32:34,870 INFO L413 NwaCegarLoop]: 2742 mSDtfsCounter, 2174 mSDsluCounter, 2177 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2174 SdHoareTripleChecker+Valid, 4919 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:32:34,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2174 Valid, 4919 Invalid, 623 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 619 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2022-11-22 01:32:34,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2022-11-22 01:32:35,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 3257. [2022-11-22 01:32:35,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3257 states, 1876 states have (on average 1.25) internal successors, (2345), 1917 states have internal predecessors, (2345), 1148 states have call successors, (1148), 231 states have call predecessors, (1148), 230 states have return successors, (1145), 1141 states have call predecessors, (1145), 1145 states have call successors, (1145) [2022-11-22 01:32:35,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3257 states to 3257 states and 4638 transitions. [2022-11-22 01:32:35,234 INFO L78 Accepts]: Start accepts. Automaton has 3257 states and 4638 transitions. Word has length 147 [2022-11-22 01:32:35,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:32:35,237 INFO L495 AbstractCegarLoop]: Abstraction has 3257 states and 4638 transitions. [2022-11-22 01:32:35,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 01:32:35,238 INFO L276 IsEmpty]: Start isEmpty. Operand 3257 states and 4638 transitions. [2022-11-22 01:32:35,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-22 01:32:35,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:32:35,247 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:32:35,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:32:35,247 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:32:35,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:32:35,248 INFO L85 PathProgramCache]: Analyzing trace with hash 234605090, now seen corresponding path program 1 times [2022-11-22 01:32:35,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:32:35,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914934486] [2022-11-22 01:32:35,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:32:35,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:32:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:32:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-22 01:32:35,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:32:35,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914934486] [2022-11-22 01:32:35,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914934486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:32:35,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:32:35,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:32:35,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510238928] [2022-11-22 01:32:35,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:32:35,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:32:35,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:32:35,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:32:35,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:32:35,558 INFO L87 Difference]: Start difference. First operand 3257 states and 4638 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 01:32:39,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:32:43,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:32:43,882 INFO L93 Difference]: Finished difference Result 9384 states and 13366 transitions. [2022-11-22 01:32:43,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:32:43,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 152 [2022-11-22 01:32:43,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:32:43,927 INFO L225 Difference]: With dead ends: 9384 [2022-11-22 01:32:43,928 INFO L226 Difference]: Without dead ends: 6154 [2022-11-22 01:32:43,943 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 01:32:43,944 INFO L413 NwaCegarLoop]: 2760 mSDtfsCounter, 2168 mSDsluCounter, 2120 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2168 SdHoareTripleChecker+Valid, 4880 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:32:43,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2168 Valid, 4880 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 612 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-11-22 01:32:43,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2022-11-22 01:32:44,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 6121. [2022-11-22 01:32:44,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6121 states, 3538 states have (on average 1.252967778405879) internal successors, (4433), 3625 states have internal predecessors, (4433), 2139 states have call successors, (2139), 452 states have call predecessors, (2139), 441 states have return successors, (2150), 2104 states have call predecessors, (2150), 2136 states have call successors, (2150) [2022-11-22 01:32:44,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6121 states to 6121 states and 8722 transitions. [2022-11-22 01:32:44,334 INFO L78 Accepts]: Start accepts. Automaton has 6121 states and 8722 transitions. Word has length 152 [2022-11-22 01:32:44,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:32:44,341 INFO L495 AbstractCegarLoop]: Abstraction has 6121 states and 8722 transitions. [2022-11-22 01:32:44,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 01:32:44,342 INFO L276 IsEmpty]: Start isEmpty. Operand 6121 states and 8722 transitions. [2022-11-22 01:32:44,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-22 01:32:44,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:32:44,350 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:32:44,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:32:44,351 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:32:44,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:32:44,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1849471418, now seen corresponding path program 1 times [2022-11-22 01:32:44,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:32:44,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215528593] [2022-11-22 01:32:44,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:32:44,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:32:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:32:44,717 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-22 01:32:44,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:32:44,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215528593] [2022-11-22 01:32:44,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215528593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:32:44,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:32:44,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:32:44,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281970017] [2022-11-22 01:32:44,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:32:44,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:32:44,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:32:44,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:32:44,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:32:44,724 INFO L87 Difference]: Start difference. First operand 6121 states and 8722 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-22 01:32:46,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:32:49,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:32:52,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:32:55,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:32:56,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:32:56,783 INFO L93 Difference]: Finished difference Result 18209 states and 26001 transitions. [2022-11-22 01:32:56,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:32:56,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 163 [2022-11-22 01:32:56,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:32:56,873 INFO L225 Difference]: With dead ends: 18209 [2022-11-22 01:32:56,873 INFO L226 Difference]: Without dead ends: 12115 [2022-11-22 01:32:56,913 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 01:32:56,917 INFO L413 NwaCegarLoop]: 2819 mSDtfsCounter, 2434 mSDsluCounter, 2159 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2434 SdHoareTripleChecker+Valid, 4978 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:32:56,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2434 Valid, 4978 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 618 Invalid, 1 Unknown, 0 Unchecked, 11.5s Time] [2022-11-22 01:32:56,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12115 states. [2022-11-22 01:32:57,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12115 to 12079. [2022-11-22 01:32:57,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12079 states, 7001 states have (on average 1.2538208827310384) internal successors, (8778), 7181 states have internal predecessors, (8778), 4208 states have call successors, (4208), 896 states have call predecessors, (4208), 867 states have return successors, (4274), 4119 states have call predecessors, (4274), 4205 states have call successors, (4274) [2022-11-22 01:32:57,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12079 states to 12079 states and 17260 transitions. [2022-11-22 01:32:57,820 INFO L78 Accepts]: Start accepts. Automaton has 12079 states and 17260 transitions. Word has length 163 [2022-11-22 01:32:57,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:32:57,822 INFO L495 AbstractCegarLoop]: Abstraction has 12079 states and 17260 transitions. [2022-11-22 01:32:57,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-22 01:32:57,823 INFO L276 IsEmpty]: Start isEmpty. Operand 12079 states and 17260 transitions. [2022-11-22 01:32:57,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-22 01:32:57,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:32:57,829 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:32:57,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:32:57,830 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:32:57,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:32:57,831 INFO L85 PathProgramCache]: Analyzing trace with hash -747028321, now seen corresponding path program 1 times [2022-11-22 01:32:57,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:32:57,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137421889] [2022-11-22 01:32:57,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:32:57,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:32:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:32:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-22 01:32:58,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:32:58,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137421889] [2022-11-22 01:32:58,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137421889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:32:58,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:32:58,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:32:58,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606941388] [2022-11-22 01:32:58,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:32:58,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:32:58,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:32:58,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:32:58,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:32:58,148 INFO L87 Difference]: Start difference. First operand 12079 states and 17260 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 01:33:00,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:33:02,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:33:07,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:33:07,541 INFO L93 Difference]: Finished difference Result 26320 states and 37217 transitions. [2022-11-22 01:33:07,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:33:07,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 166 [2022-11-22 01:33:07,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:33:07,641 INFO L225 Difference]: With dead ends: 26320 [2022-11-22 01:33:07,642 INFO L226 Difference]: Without dead ends: 14268 [2022-11-22 01:33:07,704 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 01:33:07,706 INFO L413 NwaCegarLoop]: 2700 mSDtfsCounter, 1588 mSDsluCounter, 2125 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 4825 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:33:07,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 4825 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 674 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2022-11-22 01:33:07,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14268 states. [2022-11-22 01:33:08,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14268 to 14237. [2022-11-22 01:33:08,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14237 states, 8080 states have (on average 1.2201732673267327) internal successors, (9859), 8313 states have internal predecessors, (9859), 4980 states have call successors, (4980), 1218 states have call predecessors, (4980), 1174 states have return successors, (5076), 4853 states have call predecessors, (5076), 4977 states have call successors, (5076) [2022-11-22 01:33:08,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14237 states to 14237 states and 19915 transitions. [2022-11-22 01:33:08,835 INFO L78 Accepts]: Start accepts. Automaton has 14237 states and 19915 transitions. Word has length 166 [2022-11-22 01:33:08,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:33:08,836 INFO L495 AbstractCegarLoop]: Abstraction has 14237 states and 19915 transitions. [2022-11-22 01:33:08,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 01:33:08,837 INFO L276 IsEmpty]: Start isEmpty. Operand 14237 states and 19915 transitions. [2022-11-22 01:33:08,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-22 01:33:08,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:33:08,842 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:33:08,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:33:08,842 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 01:33:08,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:33:08,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1462489591, now seen corresponding path program 1 times [2022-11-22 01:33:08,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:33:08,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861828713] [2022-11-22 01:33:08,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:33:08,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:33:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:33:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2022-11-22 01:33:09,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:33:09,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861828713] [2022-11-22 01:33:09,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861828713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:33:09,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:33:09,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:33:09,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633374370] [2022-11-22 01:33:09,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:33:09,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:33:09,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:33:09,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:33:09,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:33:09,528 INFO L87 Difference]: Start difference. First operand 14237 states and 19915 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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 01:33:16,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:33:24,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:33:24,438 INFO L93 Difference]: Finished difference Result 24201 states and 33974 transitions. [2022-11-22 01:33:24,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:33:24,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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 185 [2022-11-22 01:33:24,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:33:24,597 INFO L225 Difference]: With dead ends: 24201 [2022-11-22 01:33:24,598 INFO L226 Difference]: Without dead ends: 24199 [2022-11-22 01:33:24,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:33:24,617 INFO L413 NwaCegarLoop]: 3259 mSDtfsCounter, 2208 mSDsluCounter, 8649 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2222 SdHoareTripleChecker+Valid, 11908 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:33:24,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2222 Valid, 11908 Invalid, 1559 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1555 Invalid, 1 Unknown, 0 Unchecked, 14.1s Time] [2022-11-22 01:33:24,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24199 states. [2022-11-22 01:33:26,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24199 to 24183. [2022-11-22 01:33:26,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24183 states, 13742 states have (on average 1.2238393246980062) internal successors, (16818), 14148 states have internal predecessors, (16818), 8439 states have call successors, (8439), 2073 states have call predecessors, (8439), 1999 states have return successors, (8702), 8211 states have call predecessors, (8702), 8433 states have call successors, (8702) [2022-11-22 01:33:26,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24183 states to 24183 states and 33959 transitions. [2022-11-22 01:33:26,481 INFO L78 Accepts]: Start accepts. Automaton has 24183 states and 33959 transitions. Word has length 185 [2022-11-22 01:33:26,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:33:26,482 INFO L495 AbstractCegarLoop]: Abstraction has 24183 states and 33959 transitions. [2022-11-22 01:33:26,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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 01:33:26,483 INFO L276 IsEmpty]: Start isEmpty. Operand 24183 states and 33959 transitions. [2022-11-22 01:33:26,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-22 01:33:26,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:33:26,487 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:33:26,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:33:26,488 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 01:33:26,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:33:26,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1022291715, now seen corresponding path program 1 times [2022-11-22 01:33:26,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:33:26,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645152647] [2022-11-22 01:33:26,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:33:26,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:33:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:33:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2022-11-22 01:33:27,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:33:27,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645152647] [2022-11-22 01:33:27,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645152647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:33:27,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:33:27,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:33:27,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355362416] [2022-11-22 01:33:27,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:33:27,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:33:27,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:33:27,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:33:27,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:33:27,043 INFO L87 Difference]: Start difference. First operand 24183 states and 33959 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 01:33:28,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:33:34,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:33:36,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:33:41,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:33:41,772 INFO L93 Difference]: Finished difference Result 24193 states and 33968 transitions. [2022-11-22 01:33:41,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:33:41,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 190 [2022-11-22 01:33:41,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:33:41,906 INFO L225 Difference]: With dead ends: 24193 [2022-11-22 01:33:41,906 INFO L226 Difference]: Without dead ends: 24191 [2022-11-22 01:33:41,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:33:41,919 INFO L413 NwaCegarLoop]: 2187 mSDtfsCounter, 2435 mSDsluCounter, 4352 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2448 SdHoareTripleChecker+Valid, 6539 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:33:41,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2448 Valid, 6539 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 942 Invalid, 1 Unknown, 0 Unchecked, 13.6s Time] [2022-11-22 01:33:41,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24191 states. [2022-11-22 01:33:43,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24191 to 24191. [2022-11-22 01:33:43,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24191 states, 13748 states have (on average 1.2237416351469306) internal successors, (16824), 14154 states have internal predecessors, (16824), 8439 states have call successors, (8439), 2075 states have call predecessors, (8439), 2001 states have return successors, (8702), 8211 states have call predecessors, (8702), 8433 states have call successors, (8702) [2022-11-22 01:33:43,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24191 states to 24191 states and 33965 transitions. [2022-11-22 01:33:43,634 INFO L78 Accepts]: Start accepts. Automaton has 24191 states and 33965 transitions. Word has length 190 [2022-11-22 01:33:43,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:33:43,635 INFO L495 AbstractCegarLoop]: Abstraction has 24191 states and 33965 transitions. [2022-11-22 01:33:43,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 01:33:43,636 INFO L276 IsEmpty]: Start isEmpty. Operand 24191 states and 33965 transitions. [2022-11-22 01:33:43,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-22 01:33:43,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:33:43,643 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 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] [2022-11-22 01:33:43,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:33:43,643 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:33:43,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:33:43,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1667829200, now seen corresponding path program 1 times [2022-11-22 01:33:43,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:33:43,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970645045] [2022-11-22 01:33:43,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:33:43,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:33:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:33:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2022-11-22 01:33:44,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:33:44,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970645045] [2022-11-22 01:33:44,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970645045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:33:44,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:33:44,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:33:44,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782375963] [2022-11-22 01:33:44,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:33:44,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:33:44,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:33:44,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:33:44,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:33:44,073 INFO L87 Difference]: Start difference. First operand 24191 states and 33965 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-22 01:33:50,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:33:53,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:33:53,778 INFO L93 Difference]: Finished difference Result 54173 states and 76148 transitions. [2022-11-22 01:33:53,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:33:53,784 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), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 187 [2022-11-22 01:33:53,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:33:53,928 INFO L225 Difference]: With dead ends: 54173 [2022-11-22 01:33:53,928 INFO L226 Difference]: Without dead ends: 30009 [2022-11-22 01:33:54,019 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 01:33:54,020 INFO L413 NwaCegarLoop]: 3385 mSDtfsCounter, 1564 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 5536 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:33:54,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1564 Valid, 5536 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 831 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2022-11-22 01:33:54,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30009 states. [2022-11-22 01:33:55,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30009 to 29933. [2022-11-22 01:33:55,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29933 states, 17370 states have (on average 1.2370178468624065) internal successors, (21487), 17860 states have internal predecessors, (21487), 10066 states have call successors, (10066), 2566 states have call predecessors, (10066), 2494 states have return successors, (10317), 9792 states have call predecessors, (10317), 10060 states have call successors, (10317) [2022-11-22 01:33:55,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29933 states to 29933 states and 41870 transitions. [2022-11-22 01:33:55,931 INFO L78 Accepts]: Start accepts. Automaton has 29933 states and 41870 transitions. Word has length 187 [2022-11-22 01:33:55,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:33:55,932 INFO L495 AbstractCegarLoop]: Abstraction has 29933 states and 41870 transitions. [2022-11-22 01:33:55,932 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), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-22 01:33:55,932 INFO L276 IsEmpty]: Start isEmpty. Operand 29933 states and 41870 transitions. [2022-11-22 01:33:55,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-22 01:33:55,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:33:55,936 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 6, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:33:55,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:33:55,937 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 01:33:55,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:33:55,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1924935729, now seen corresponding path program 1 times [2022-11-22 01:33:55,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:33:55,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274876742] [2022-11-22 01:33:55,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:33:55,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:33:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:33:56,461 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2022-11-22 01:33:56,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:33:56,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274876742] [2022-11-22 01:33:56,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274876742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:33:56,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:33:56,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:33:56,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278251724] [2022-11-22 01:33:56,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:33:56,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:33:56,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:33:56,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:33:56,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:33:56,463 INFO L87 Difference]: Start difference. First operand 29933 states and 41870 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-22 01:33:58,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:34:01,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:34:02,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:34:06,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:34:07,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:34:11,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:34:11,311 INFO L93 Difference]: Finished difference Result 35063 states and 48670 transitions. [2022-11-22 01:34:11,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:34:11,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 204 [2022-11-22 01:34:11,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:34:11,516 INFO L225 Difference]: With dead ends: 35063 [2022-11-22 01:34:11,517 INFO L226 Difference]: Without dead ends: 35061 [2022-11-22 01:34:11,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:34:11,540 INFO L413 NwaCegarLoop]: 2483 mSDtfsCounter, 2430 mSDsluCounter, 5313 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2444 SdHoareTripleChecker+Valid, 7796 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:34:11,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2444 Valid, 7796 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1058 Invalid, 2 Unknown, 0 Unchecked, 13.3s Time] [2022-11-22 01:34:11,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35061 states. [2022-11-22 01:34:13,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35061 to 34997. [2022-11-22 01:34:13,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34997 states, 20096 states have (on average 1.2239749203821657) internal successors, (24597), 20650 states have internal predecessors, (24597), 11858 states have call successors, (11858), 3112 states have call predecessors, (11858), 3040 states have return successors, (12125), 11536 states have call predecessors, (12125), 11852 states have call successors, (12125) [2022-11-22 01:34:13,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34997 states to 34997 states and 48580 transitions. [2022-11-22 01:34:13,889 INFO L78 Accepts]: Start accepts. Automaton has 34997 states and 48580 transitions. Word has length 204 [2022-11-22 01:34:13,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:34:13,889 INFO L495 AbstractCegarLoop]: Abstraction has 34997 states and 48580 transitions. [2022-11-22 01:34:13,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-22 01:34:13,890 INFO L276 IsEmpty]: Start isEmpty. Operand 34997 states and 48580 transitions. [2022-11-22 01:34:13,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-22 01:34:13,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:34:13,894 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 6, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:34:13,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:34:13,894 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 01:34:13,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:34:13,895 INFO L85 PathProgramCache]: Analyzing trace with hash -734680963, now seen corresponding path program 1 times [2022-11-22 01:34:13,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:34:13,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833493229] [2022-11-22 01:34:13,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:34:13,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:34:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:34:14,768 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2022-11-22 01:34:14,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:34:14,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833493229] [2022-11-22 01:34:14,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833493229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:34:14,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:34:14,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:34:14,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304023165] [2022-11-22 01:34:14,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:34:14,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:34:14,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:34:14,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:34:14,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:34:14,772 INFO L87 Difference]: Start difference. First operand 34997 states and 48580 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-22 01:34:20,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:34:23,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:34:30,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:34:30,913 INFO L93 Difference]: Finished difference Result 41385 states and 57129 transitions. [2022-11-22 01:34:30,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:34:30,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 209 [2022-11-22 01:34:30,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:34:31,185 INFO L225 Difference]: With dead ends: 41385 [2022-11-22 01:34:31,185 INFO L226 Difference]: Without dead ends: 41383 [2022-11-22 01:34:31,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:34:31,204 INFO L413 NwaCegarLoop]: 2672 mSDtfsCounter, 1575 mSDsluCounter, 7471 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 10143 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:34:31,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1586 Valid, 10143 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1278 Invalid, 1 Unknown, 0 Unchecked, 14.4s Time] [2022-11-22 01:34:31,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41383 states. [2022-11-22 01:34:33,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41383 to 41375. [2022-11-22 01:34:34,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41375 states, 23676 states have (on average 1.2174353775975673) internal successors, (28824), 24340 states have internal predecessors, (28824), 13999 states have call successors, (13999), 3784 states have call predecessors, (13999), 3697 states have return successors, (14299), 13610 states have call predecessors, (14299), 13990 states have call successors, (14299) [2022-11-22 01:34:34,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41375 states to 41375 states and 57122 transitions. [2022-11-22 01:34:34,181 INFO L78 Accepts]: Start accepts. Automaton has 41375 states and 57122 transitions. Word has length 209 [2022-11-22 01:34:34,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:34:34,182 INFO L495 AbstractCegarLoop]: Abstraction has 41375 states and 57122 transitions. [2022-11-22 01:34:34,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-22 01:34:34,183 INFO L276 IsEmpty]: Start isEmpty. Operand 41375 states and 57122 transitions. [2022-11-22 01:34:34,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-22 01:34:34,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:34:34,188 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 6, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:34:34,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 01:34:34,188 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 01:34:34,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:34:34,189 INFO L85 PathProgramCache]: Analyzing trace with hash -72145841, now seen corresponding path program 1 times [2022-11-22 01:34:34,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:34:34,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574187510] [2022-11-22 01:34:34,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:34:34,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:34:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:34:35,041 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2022-11-22 01:34:35,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:34:35,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574187510] [2022-11-22 01:34:35,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574187510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:34:35,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:34:35,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:34:35,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666599982] [2022-11-22 01:34:35,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:34:35,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:34:35,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:34:35,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:34:35,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:34:35,045 INFO L87 Difference]: Start difference. First operand 41375 states and 57122 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-22 01:34:37,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:34:41,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:34:44,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:34:49,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:34:52,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:34:52,804 INFO L93 Difference]: Finished difference Result 41389 states and 57132 transitions. [2022-11-22 01:34:52,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:34:52,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 214 [2022-11-22 01:34:52,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:34:52,954 INFO L225 Difference]: With dead ends: 41389 [2022-11-22 01:34:52,954 INFO L226 Difference]: Without dead ends: 41387 [2022-11-22 01:34:52,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:34:52,970 INFO L413 NwaCegarLoop]: 2672 mSDtfsCounter, 1575 mSDsluCounter, 7471 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 10143 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:34:52,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 10143 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1278 Invalid, 1 Unknown, 0 Unchecked, 15.9s Time] [2022-11-22 01:34:53,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41387 states. [2022-11-22 01:34:55,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41387 to 41379. [2022-11-22 01:34:55,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41379 states, 23679 states have (on average 1.217407829722539) internal successors, (28827), 24343 states have internal predecessors, (28827), 13999 states have call successors, (13999), 3785 states have call predecessors, (13999), 3698 states have return successors, (14299), 13610 states have call predecessors, (14299), 13990 states have call successors, (14299) [2022-11-22 01:34:56,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41379 states to 41379 states and 57125 transitions. [2022-11-22 01:34:56,041 INFO L78 Accepts]: Start accepts. Automaton has 41379 states and 57125 transitions. Word has length 214 [2022-11-22 01:34:56,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:34:56,042 INFO L495 AbstractCegarLoop]: Abstraction has 41379 states and 57125 transitions. [2022-11-22 01:34:56,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-22 01:34:56,043 INFO L276 IsEmpty]: Start isEmpty. Operand 41379 states and 57125 transitions. [2022-11-22 01:34:56,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-22 01:34:56,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:34:56,049 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:34:56,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 01:34:56,049 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 01:34:56,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:34:56,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1485329923, now seen corresponding path program 1 times [2022-11-22 01:34:56,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:34:56,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994915422] [2022-11-22 01:34:56,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:34:56,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:34:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:34:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2022-11-22 01:34:56,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:34:56,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994915422] [2022-11-22 01:34:56,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994915422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:34:56,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:34:56,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:34:56,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048121093] [2022-11-22 01:34:56,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:34:56,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:34:56,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:34:56,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:34:56,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:34:56,626 INFO L87 Difference]: Start difference. First operand 41379 states and 57125 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-22 01:35:02,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:35:04,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:35:09,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:35:11,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:35:15,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:35:15,092 INFO L93 Difference]: Finished difference Result 41393 states and 57135 transitions. [2022-11-22 01:35:15,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:35:15,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 210 [2022-11-22 01:35:15,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:35:15,285 INFO L225 Difference]: With dead ends: 41393 [2022-11-22 01:35:15,285 INFO L226 Difference]: Without dead ends: 41391 [2022-11-22 01:35:15,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:35:15,304 INFO L413 NwaCegarLoop]: 2672 mSDtfsCounter, 1579 mSDsluCounter, 7471 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 10143 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:35:15,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 10143 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1278 Invalid, 1 Unknown, 0 Unchecked, 16.3s Time] [2022-11-22 01:35:15,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41391 states. [2022-11-22 01:35:17,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41391 to 41383. [2022-11-22 01:35:17,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41383 states, 23682 states have (on average 1.2173802888269571) internal successors, (28830), 24346 states have internal predecessors, (28830), 13999 states have call successors, (13999), 3786 states have call predecessors, (13999), 3699 states have return successors, (14299), 13610 states have call predecessors, (14299), 13990 states have call successors, (14299) [2022-11-22 01:35:17,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41383 states to 41383 states and 57128 transitions. [2022-11-22 01:35:17,838 INFO L78 Accepts]: Start accepts. Automaton has 41383 states and 57128 transitions. Word has length 210 [2022-11-22 01:35:17,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:35:17,839 INFO L495 AbstractCegarLoop]: Abstraction has 41383 states and 57128 transitions. [2022-11-22 01:35:17,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-22 01:35:17,839 INFO L276 IsEmpty]: Start isEmpty. Operand 41383 states and 57128 transitions. [2022-11-22 01:35:17,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-22 01:35:17,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:35:17,844 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 7, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:35:17,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 01:35:17,844 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 01:35:17,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:35:17,845 INFO L85 PathProgramCache]: Analyzing trace with hash 181700815, now seen corresponding path program 1 times [2022-11-22 01:35:17,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:35:17,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131451405] [2022-11-22 01:35:17,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:35:17,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:35:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:35:18,457 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 849 trivial. 0 not checked. [2022-11-22 01:35:18,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:35:18,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131451405] [2022-11-22 01:35:18,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131451405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:35:18,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:35:18,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:35:18,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365718166] [2022-11-22 01:35:18,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:35:18,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:35:18,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:35:18,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:35:18,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:35:18,461 INFO L87 Difference]: Start difference. First operand 41383 states and 57128 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-22 01:35:20,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:35:24,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:35:25,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:35:27,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:35:33,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:35:38,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:35:38,129 INFO L93 Difference]: Finished difference Result 41397 states and 57138 transitions. [2022-11-22 01:35:38,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:35:38,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 224 [2022-11-22 01:35:38,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:35:38,282 INFO L225 Difference]: With dead ends: 41397 [2022-11-22 01:35:38,282 INFO L226 Difference]: Without dead ends: 41395 [2022-11-22 01:35:38,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:35:38,302 INFO L413 NwaCegarLoop]: 2672 mSDtfsCounter, 1575 mSDsluCounter, 7471 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 10143 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:35:38,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 10143 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1278 Invalid, 1 Unknown, 0 Unchecked, 17.6s Time] [2022-11-22 01:35:38,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41395 states. [2022-11-22 01:35:40,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41395 to 41387. [2022-11-22 01:35:40,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41387 states, 23685 states have (on average 1.2173527549081697) internal successors, (28833), 24349 states have internal predecessors, (28833), 13999 states have call successors, (13999), 3787 states have call predecessors, (13999), 3700 states have return successors, (14299), 13610 states have call predecessors, (14299), 13990 states have call successors, (14299) [2022-11-22 01:35:41,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41387 states to 41387 states and 57131 transitions. [2022-11-22 01:35:41,043 INFO L78 Accepts]: Start accepts. Automaton has 41387 states and 57131 transitions. Word has length 224 [2022-11-22 01:35:41,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:35:41,044 INFO L495 AbstractCegarLoop]: Abstraction has 41387 states and 57131 transitions. [2022-11-22 01:35:41,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-22 01:35:41,044 INFO L276 IsEmpty]: Start isEmpty. Operand 41387 states and 57131 transitions. [2022-11-22 01:35:41,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-11-22 01:35:41,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:35:41,050 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 8, 7, 7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:35:41,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 01:35:41,051 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 01:35:41,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:35:41,052 INFO L85 PathProgramCache]: Analyzing trace with hash 27586173, now seen corresponding path program 1 times [2022-11-22 01:35:41,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:35:41,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170012801] [2022-11-22 01:35:41,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:35:41,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:35:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:35:41,887 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2022-11-22 01:35:41,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:35:41,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170012801] [2022-11-22 01:35:41,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170012801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:35:41,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:35:41,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:35:41,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643066087] [2022-11-22 01:35:41,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:35:41,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:35:41,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:35:41,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:35:41,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:35:41,891 INFO L87 Difference]: Start difference. First operand 41387 states and 57131 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-22 01:35:48,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:35:49,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:35:52,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:35:59,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:36:02,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:36:02,281 INFO L93 Difference]: Finished difference Result 41401 states and 57141 transitions. [2022-11-22 01:36:02,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:36:02,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 229 [2022-11-22 01:36:02,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:36:02,436 INFO L225 Difference]: With dead ends: 41401 [2022-11-22 01:36:02,436 INFO L226 Difference]: Without dead ends: 41399 [2022-11-22 01:36:02,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:36:02,453 INFO L413 NwaCegarLoop]: 2672 mSDtfsCounter, 1575 mSDsluCounter, 7471 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 10143 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:36:02,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1582 Valid, 10143 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1278 Invalid, 2 Unknown, 0 Unchecked, 18.3s Time] [2022-11-22 01:36:02,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41399 states. [2022-11-22 01:36:04,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41399 to 41391. [2022-11-22 01:36:04,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41391 states, 23688 states have (on average 1.2173252279635258) internal successors, (28836), 24352 states have internal predecessors, (28836), 13999 states have call successors, (13999), 3788 states have call predecessors, (13999), 3701 states have return successors, (14299), 13610 states have call predecessors, (14299), 13990 states have call successors, (14299) [2022-11-22 01:36:05,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41391 states to 41391 states and 57134 transitions. [2022-11-22 01:36:05,093 INFO L78 Accepts]: Start accepts. Automaton has 41391 states and 57134 transitions. Word has length 229 [2022-11-22 01:36:05,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:36:05,093 INFO L495 AbstractCegarLoop]: Abstraction has 41391 states and 57134 transitions. [2022-11-22 01:36:05,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-22 01:36:05,094 INFO L276 IsEmpty]: Start isEmpty. Operand 41391 states and 57134 transitions. [2022-11-22 01:36:05,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-22 01:36:05,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:36:05,098 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 9, 8, 8, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:36:05,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 01:36:05,099 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:36:05,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:36:05,100 INFO L85 PathProgramCache]: Analyzing trace with hash -823992823, now seen corresponding path program 1 times [2022-11-22 01:36:05,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:36:05,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41210738] [2022-11-22 01:36:05,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:36:05,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:36:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:36:05,747 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 875 trivial. 0 not checked. [2022-11-22 01:36:05,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:36:05,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41210738] [2022-11-22 01:36:05,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41210738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:36:05,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:36:05,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:36:05,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902031483] [2022-11-22 01:36:05,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:36:05,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:36:05,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:36:05,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:36:05,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:36:05,750 INFO L87 Difference]: Start difference. First operand 41391 states and 57134 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-22 01:36:08,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:36:12,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:36:13,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:36:16,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:36:21,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:36:24,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:36:24,484 INFO L93 Difference]: Finished difference Result 41405 states and 57144 transitions. [2022-11-22 01:36:24,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:36:24,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 225 [2022-11-22 01:36:24,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:36:24,638 INFO L225 Difference]: With dead ends: 41405 [2022-11-22 01:36:24,638 INFO L226 Difference]: Without dead ends: 41403 [2022-11-22 01:36:24,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:36:24,657 INFO L413 NwaCegarLoop]: 2672 mSDtfsCounter, 1579 mSDsluCounter, 7471 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 10143 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:36:24,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 10143 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1278 Invalid, 1 Unknown, 0 Unchecked, 16.4s Time] [2022-11-22 01:36:24,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41403 states. [2022-11-22 01:36:27,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41403 to 41395. [2022-11-22 01:36:27,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41395 states, 23691 states have (on average 1.2172977079903762) internal successors, (28839), 24355 states have internal predecessors, (28839), 13999 states have call successors, (13999), 3789 states have call predecessors, (13999), 3702 states have return successors, (14299), 13610 states have call predecessors, (14299), 13990 states have call successors, (14299) [2022-11-22 01:36:27,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41395 states to 41395 states and 57137 transitions. [2022-11-22 01:36:27,453 INFO L78 Accepts]: Start accepts. Automaton has 41395 states and 57137 transitions. Word has length 225 [2022-11-22 01:36:27,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:36:27,453 INFO L495 AbstractCegarLoop]: Abstraction has 41395 states and 57137 transitions. [2022-11-22 01:36:27,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-22 01:36:27,454 INFO L276 IsEmpty]: Start isEmpty. Operand 41395 states and 57137 transitions. [2022-11-22 01:36:27,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-22 01:36:27,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:36:27,457 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 10, 9, 9, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:36:27,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 01:36:27,457 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 01:36:27,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:36:27,458 INFO L85 PathProgramCache]: Analyzing trace with hash -2125170307, now seen corresponding path program 1 times [2022-11-22 01:36:27,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:36:27,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758992275] [2022-11-22 01:36:27,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:36:27,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:36:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:36:28,023 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 933 trivial. 0 not checked. [2022-11-22 01:36:28,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:36:28,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758992275] [2022-11-22 01:36:28,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758992275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:36:28,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:36:28,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:36:28,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563751554] [2022-11-22 01:36:28,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:36:28,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:36:28,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:36:28,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:36:28,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:36:28,027 INFO L87 Difference]: Start difference. First operand 41395 states and 57137 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-22 01:36:32,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:36:34,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:36:37,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:36:39,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:36:45,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:36:45,239 INFO L93 Difference]: Finished difference Result 41409 states and 57150 transitions. [2022-11-22 01:36:45,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:36:45,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 239 [2022-11-22 01:36:45,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:36:45,384 INFO L225 Difference]: With dead ends: 41409 [2022-11-22 01:36:45,384 INFO L226 Difference]: Without dead ends: 41407 [2022-11-22 01:36:45,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:36:45,402 INFO L413 NwaCegarLoop]: 2187 mSDtfsCounter, 2431 mSDsluCounter, 4352 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2436 SdHoareTripleChecker+Valid, 6539 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:36:45,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2436 Valid, 6539 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 941 Invalid, 2 Unknown, 0 Unchecked, 15.1s Time] [2022-11-22 01:36:45,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41407 states. [2022-11-22 01:36:47,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41407 to 41407. [2022-11-22 01:36:47,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41407 states, 23700 states have (on average 1.2172151898734178) internal successors, (28848), 24364 states have internal predecessors, (28848), 13999 states have call successors, (13999), 3792 states have call predecessors, (13999), 3705 states have return successors, (14299), 13610 states have call predecessors, (14299), 13990 states have call successors, (14299) [2022-11-22 01:36:48,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41407 states to 41407 states and 57146 transitions. [2022-11-22 01:36:48,083 INFO L78 Accepts]: Start accepts. Automaton has 41407 states and 57146 transitions. Word has length 239 [2022-11-22 01:36:48,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:36:48,083 INFO L495 AbstractCegarLoop]: Abstraction has 41407 states and 57146 transitions. [2022-11-22 01:36:48,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-22 01:36:48,083 INFO L276 IsEmpty]: Start isEmpty. Operand 41407 states and 57146 transitions. [2022-11-22 01:36:48,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-22 01:36:48,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:36:48,088 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:36:48,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 01:36:48,088 INFO L420 AbstractCegarLoop]: === Iteration 16 === 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 01:36:48,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:36:48,089 INFO L85 PathProgramCache]: Analyzing trace with hash -932522837, now seen corresponding path program 1 times [2022-11-22 01:36:48,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:36:48,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183631597] [2022-11-22 01:36:48,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:36:48,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:36:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:36:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2022-11-22 01:36:48,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:36:48,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183631597] [2022-11-22 01:36:48,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183631597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:36:48,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:36:48,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:36:48,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161067882] [2022-11-22 01:36:48,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:36:48,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:36:48,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:36:48,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:36:48,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:36:48,478 INFO L87 Difference]: Start difference. First operand 41407 states and 57146 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-22 01:36:55,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:36:57,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:37:01,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:01,271 INFO L93 Difference]: Finished difference Result 93554 states and 129212 transitions. [2022-11-22 01:37:01,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:37:01,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 243 [2022-11-22 01:37:01,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:01,841 INFO L225 Difference]: With dead ends: 93554 [2022-11-22 01:37:01,841 INFO L226 Difference]: Without dead ends: 52230 [2022-11-22 01:37:02,009 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 01:37:02,010 INFO L413 NwaCegarLoop]: 3504 mSDtfsCounter, 1562 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 5648 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:02,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1562 Valid, 5648 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 864 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2022-11-22 01:37:02,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52230 states. [2022-11-22 01:37:05,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52230 to 52073. [2022-11-22 01:37:05,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52073 states, 30089 states have (on average 1.2232709628103293) internal successors, (36807), 30923 states have internal predecessors, (36807), 17281 states have call successors, (17281), 4799 states have call predecessors, (17281), 4700 states have return successors, (17601), 16800 states have call predecessors, (17601), 17272 states have call successors, (17601) [2022-11-22 01:37:06,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52073 states to 52073 states and 71689 transitions. [2022-11-22 01:37:06,036 INFO L78 Accepts]: Start accepts. Automaton has 52073 states and 71689 transitions. Word has length 243 [2022-11-22 01:37:06,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:06,037 INFO L495 AbstractCegarLoop]: Abstraction has 52073 states and 71689 transitions. [2022-11-22 01:37:06,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-22 01:37:06,038 INFO L276 IsEmpty]: Start isEmpty. Operand 52073 states and 71689 transitions. [2022-11-22 01:37:06,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-22 01:37:06,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:06,041 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 11, 10, 10, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:37:06,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 01:37:06,041 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 01:37:06,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:06,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1994228175, now seen corresponding path program 1 times [2022-11-22 01:37:06,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:06,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486736417] [2022-11-22 01:37:06,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:06,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:06,969 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2022-11-22 01:37:06,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:06,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486736417] [2022-11-22 01:37:06,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486736417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:37:06,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:37:06,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:37:06,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828954454] [2022-11-22 01:37:06,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:06,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:37:06,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:06,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:37:06,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:37:06,973 INFO L87 Difference]: Start difference. First operand 52073 states and 71689 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-22 01:37:08,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:37:13,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:37:16,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:37:25,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:25,756 INFO L93 Difference]: Finished difference Result 52087 states and 71699 transitions. [2022-11-22 01:37:25,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:37:25,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 244 [2022-11-22 01:37:25,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:25,969 INFO L225 Difference]: With dead ends: 52087 [2022-11-22 01:37:25,969 INFO L226 Difference]: Without dead ends: 52085 [2022-11-22 01:37:25,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:37:25,990 INFO L413 NwaCegarLoop]: 2672 mSDtfsCounter, 1575 mSDsluCounter, 7471 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 10143 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:25,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1579 Valid, 10143 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1278 Invalid, 1 Unknown, 0 Unchecked, 15.7s Time] [2022-11-22 01:37:26,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52085 states. [2022-11-22 01:37:29,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52085 to 52077. [2022-11-22 01:37:29,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52077 states, 30092 states have (on average 1.2232487039744782) internal successors, (36810), 30926 states have internal predecessors, (36810), 17281 states have call successors, (17281), 4800 states have call predecessors, (17281), 4701 states have return successors, (17601), 16800 states have call predecessors, (17601), 17272 states have call successors, (17601) [2022-11-22 01:37:29,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52077 states to 52077 states and 71692 transitions. [2022-11-22 01:37:29,782 INFO L78 Accepts]: Start accepts. Automaton has 52077 states and 71692 transitions. Word has length 244 [2022-11-22 01:37:29,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:29,783 INFO L495 AbstractCegarLoop]: Abstraction has 52077 states and 71692 transitions. [2022-11-22 01:37:29,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-22 01:37:29,783 INFO L276 IsEmpty]: Start isEmpty. Operand 52077 states and 71692 transitions. [2022-11-22 01:37:29,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-11-22 01:37:29,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:29,786 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 12, 11, 11, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:37:29,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 01:37:29,787 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 01:37:29,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:29,788 INFO L85 PathProgramCache]: Analyzing trace with hash -90945405, now seen corresponding path program 1 times [2022-11-22 01:37:29,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:29,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309713056] [2022-11-22 01:37:29,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:29,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:30,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 983 trivial. 0 not checked. [2022-11-22 01:37:30,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:30,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309713056] [2022-11-22 01:37:30,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309713056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:37:30,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:37:30,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:37:30,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100913525] [2022-11-22 01:37:30,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:30,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:37:30,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:30,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:37:30,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:37:30,261 INFO L87 Difference]: Start difference. First operand 52077 states and 71692 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-22 01:37:37,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:37:44,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:37:47,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:47,059 INFO L93 Difference]: Finished difference Result 52091 states and 71702 transitions. [2022-11-22 01:37:47,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:37:47,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 240 [2022-11-22 01:37:47,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:47,359 INFO L225 Difference]: With dead ends: 52091 [2022-11-22 01:37:47,359 INFO L226 Difference]: Without dead ends: 52089 [2022-11-22 01:37:47,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:37:47,376 INFO L413 NwaCegarLoop]: 2672 mSDtfsCounter, 1579 mSDsluCounter, 7471 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 10143 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:47,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1582 Valid, 10143 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1278 Invalid, 1 Unknown, 0 Unchecked, 13.8s Time] [2022-11-22 01:37:47,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52089 states. [2022-11-22 01:37:50,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52089 to 52081. [2022-11-22 01:37:50,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52081 states, 30095 states have (on average 1.2232264495763416) internal successors, (36813), 30929 states have internal predecessors, (36813), 17281 states have call successors, (17281), 4801 states have call predecessors, (17281), 4702 states have return successors, (17601), 16800 states have call predecessors, (17601), 17272 states have call successors, (17601) [2022-11-22 01:37:50,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52081 states to 52081 states and 71695 transitions. [2022-11-22 01:37:50,638 INFO L78 Accepts]: Start accepts. Automaton has 52081 states and 71695 transitions. Word has length 240 [2022-11-22 01:37:50,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:50,639 INFO L495 AbstractCegarLoop]: Abstraction has 52081 states and 71695 transitions. [2022-11-22 01:37:50,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-22 01:37:50,639 INFO L276 IsEmpty]: Start isEmpty. Operand 52081 states and 71695 transitions. [2022-11-22 01:37:50,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-11-22 01:37:50,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:50,642 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 13, 12, 12, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:37:50,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 01:37:50,643 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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 01:37:50,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:50,644 INFO L85 PathProgramCache]: Analyzing trace with hash 849237513, now seen corresponding path program 1 times [2022-11-22 01:37:50,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:50,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244783116] [2022-11-22 01:37:50,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:50,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:51,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2022-11-22 01:37:51,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:51,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244783116] [2022-11-22 01:37:51,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244783116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:37:51,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:37:51,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:37:51,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745318216] [2022-11-22 01:37:51,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:51,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:37:51,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:51,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:37:51,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:37:51,153 INFO L87 Difference]: Start difference. First operand 52081 states and 71695 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-22 01:37:56,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:37:58,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:38:00,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:38:08,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:08,552 INFO L93 Difference]: Finished difference Result 52095 states and 71705 transitions. [2022-11-22 01:38:08,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:38:08,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 245 [2022-11-22 01:38:08,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:09,066 INFO L225 Difference]: With dead ends: 52095 [2022-11-22 01:38:09,066 INFO L226 Difference]: Without dead ends: 52093 [2022-11-22 01:38:09,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:38:09,087 INFO L413 NwaCegarLoop]: 2672 mSDtfsCounter, 1579 mSDsluCounter, 7471 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 10143 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:09,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1581 Valid, 10143 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1278 Invalid, 1 Unknown, 0 Unchecked, 14.4s Time] [2022-11-22 01:38:09,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52093 states.