./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 91f73b42c8fe3db55fbb7a7497120df3b9b2fa6084f78fe538d2c182c8caed17 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:22:25,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:22:25,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:22:25,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:22:25,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:22:25,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:22:25,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:22:25,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:22:25,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:22:25,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:22:25,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:22:25,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:22:25,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:22:25,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:22:25,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:22:25,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:22:25,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:22:25,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:22:25,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:22:25,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:22:25,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:22:25,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:22:25,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:22:25,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:22:25,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:22:25,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:22:25,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:22:25,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:22:25,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:22:25,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:22:25,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:22:25,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:22:25,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:22:25,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:22:25,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:22:25,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:22:25,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:22:25,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:22:25,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:22:25,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:22:25,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:22:25,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:22:25,757 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:22:25,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:22:25,758 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:22:25,758 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:22:25,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:22:25,759 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:22:25,759 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:22:25,759 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:22:25,760 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:22:25,760 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:22:25,761 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:22:25,761 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:22:25,761 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:22:25,762 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:22:25,762 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:22:25,762 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:22:25,762 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:22:25,762 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:22:25,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:22:25,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:22:25,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:22:25,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:22:25,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:22:25,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:22:25,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:22:25,765 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:22:25,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:22:25,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:22:25,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:22:25,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:22:25,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:22:25,766 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:22:25,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:22:25,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:22:25,767 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:22:25,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:22:25,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:22:25,767 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:22:25,768 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_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91f73b42c8fe3db55fbb7a7497120df3b9b2fa6084f78fe538d2c182c8caed17 [2022-11-03 02:22:26,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:22:26,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:22:26,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:22:26,128 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:22:26,129 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:22:26,130 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i [2022-11-03 02:22:26,210 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/data/9dd2e2549/eb4f0571e1d94c9aa6210d71d69f4fba/FLAG5b3198022 [2022-11-03 02:22:27,290 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:22:27,291 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i [2022-11-03 02:22:27,364 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/data/9dd2e2549/eb4f0571e1d94c9aa6210d71d69f4fba/FLAG5b3198022 [2022-11-03 02:22:27,553 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/data/9dd2e2549/eb4f0571e1d94c9aa6210d71d69f4fba [2022-11-03 02:22:27,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:22:27,557 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:22:27,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:22:27,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:22:27,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:22:27,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:22:27" (1/1) ... [2022-11-03 02:22:27,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122c1716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:27, skipping insertion in model container [2022-11-03 02:22:27,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:22:27" (1/1) ... [2022-11-03 02:22:27,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:22:27,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:22:34,351 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[583669,583682] [2022-11-03 02:22:34,354 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[583838,583851] [2022-11-03 02:22:34,357 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[584005,584018] [2022-11-03 02:22:34,357 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[584173,584186] [2022-11-03 02:22:34,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:22:34,553 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:22:35,308 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[583669,583682] [2022-11-03 02:22:35,309 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[583838,583851] [2022-11-03 02:22:35,309 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[584005,584018] [2022-11-03 02:22:35,310 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i[584173,584186] [2022-11-03 02:22:35,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:22:35,761 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:22:35,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:35 WrapperNode [2022-11-03 02:22:35,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:22:35,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:22:35,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:22:35,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:22:35,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:35" (1/1) ... [2022-11-03 02:22:35,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:35" (1/1) ... [2022-11-03 02:22:36,361 INFO L138 Inliner]: procedures = 798, calls = 5626, calls flagged for inlining = 404, calls inlined = 343, statements flattened = 11117 [2022-11-03 02:22:36,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:22:36,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:22:36,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:22:36,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:22:36,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:35" (1/1) ... [2022-11-03 02:22:36,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:35" (1/1) ... [2022-11-03 02:22:36,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:35" (1/1) ... [2022-11-03 02:22:36,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:35" (1/1) ... [2022-11-03 02:22:36,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:35" (1/1) ... [2022-11-03 02:22:36,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:35" (1/1) ... [2022-11-03 02:22:36,777 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:35" (1/1) ... [2022-11-03 02:22:36,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:35" (1/1) ... [2022-11-03 02:22:36,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:22:36,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:22:36,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:22:36,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:22:36,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:35" (1/1) ... [2022-11-03 02:22:36,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:22:36,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:22:37,012 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:22:37,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:22:37,057 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 02:22:37,057 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 02:22:37,057 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_remove [2022-11-03 02:22:37,057 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_remove [2022-11-03 02:22:37,057 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_led [2022-11-03 02:22:37,057 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_led [2022-11-03 02:22:37,058 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_alloc_rx_skbs [2022-11-03 02:22:37,058 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_alloc_rx_skbs [2022-11-03 02:22:37,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:22:37,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:22:37,058 INFO L130 BoogieDeclarations]: Found specification of procedure rx_set_rss [2022-11-03 02:22:37,058 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_set_rss [2022-11-03 02:22:37,058 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_power_aux [2022-11-03 02:22:37,059 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_power_aux [2022-11-03 02:22:37,059 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 02:22:37,059 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 02:22:37,059 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2022-11-03 02:22:37,059 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2022-11-03 02:22:37,059 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 02:22:37,059 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 02:22:37,059 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_add_filter [2022-11-03 02:22:37,060 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_add_filter [2022-11-03 02:22:37,060 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 02:22:37,060 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 02:22:37,060 INFO L130 BoogieDeclarations]: Found specification of procedure PageTail [2022-11-03 02:22:37,060 INFO L138 BoogieDeclarations]: Found implementation of procedure PageTail [2022-11-03 02:22:37,060 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size_set [2022-11-03 02:22:37,060 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size_set [2022-11-03 02:22:37,061 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 02:22:37,061 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 02:22:37,061 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 02:22:37,061 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 02:22:37,061 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_init_netdev [2022-11-03 02:22:37,061 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_init_netdev [2022-11-03 02:22:37,061 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 02:22:37,062 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 02:22:37,062 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 02:22:37,062 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 02:22:37,062 INFO L130 BoogieDeclarations]: Found specification of procedure netif_schedule_queue [2022-11-03 02:22:37,062 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_schedule_queue [2022-11-03 02:22:37,062 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_get_regs_len [2022-11-03 02:22:37,062 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_get_regs_len [2022-11-03 02:22:37,062 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:22:37,063 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:22:37,063 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_update [2022-11-03 02:22:37,063 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_update [2022-11-03 02:22:37,063 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:22:37,063 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:22:37,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:22:37,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:22:37,064 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_ramset [2022-11-03 02:22:37,064 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_ramset [2022-11-03 02:22:37,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:22:37,064 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_update_features [2022-11-03 02:22:37,064 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_update_features [2022-11-03 02:22:37,064 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_netpoll [2022-11-03 02:22:37,064 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_netpoll [2022-11-03 02:22:37,064 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-03 02:22:37,065 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-03 02:22:37,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 02:22:37,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 02:22:37,065 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2022-11-03 02:22:37,065 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2022-11-03 02:22:37,065 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-03 02:22:37,065 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-03 02:22:37,065 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 02:22:37,066 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 02:22:37,066 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 02:22:37,066 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 02:22:37,066 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_tx_lock [2022-11-03 02:22:37,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_tx_lock [2022-11-03 02:22:37,066 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2022-11-03 02:22:37,066 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2022-11-03 02:22:37,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:22:37,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:22:37,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:22:37,067 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_add [2022-11-03 02:22:37,067 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_add [2022-11-03 02:22:37,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev [2022-11-03 02:22:37,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev [2022-11-03 02:22:37,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:22:37,067 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_map_skb [2022-11-03 02:22:37,067 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_map_skb [2022-11-03 02:22:37,068 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_resume [2022-11-03 02:22:37,068 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_resume [2022-11-03 02:22:37,068 INFO L130 BoogieDeclarations]: Found specification of procedure roundup_ring_size [2022-11-03 02:22:37,068 INFO L138 BoogieDeclarations]: Found implementation of procedure roundup_ring_size [2022-11-03 02:22:37,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:22:37,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:22:37,068 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:22:37,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:22:37,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:22:37,069 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:22:37,069 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_pci_read32 [2022-11-03 02:22:37,069 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_pci_read32 [2022-11-03 02:22:37,069 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_disable [2022-11-03 02:22:37,069 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_disable [2022-11-03 02:22:37,069 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_clean [2022-11-03 02:22:37,069 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_clean [2022-11-03 02:22:37,070 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2022-11-03 02:22:37,070 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2022-11-03 02:22:37,070 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:22:37,070 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:22:37,070 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_hw_down [2022-11-03 02:22:37,070 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_hw_down [2022-11-03 02:22:37,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 02:22:37,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 02:22:37,071 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_phy_reinit [2022-11-03 02:22:37,071 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_phy_reinit [2022-11-03 02:22:37,071 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 02:22:37,071 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 02:22:37,071 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_pci_read16 [2022-11-03 02:22:37,071 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_pci_read16 [2022-11-03 02:22:37,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:22:37,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:22:37,071 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_pci_write16 [2022-11-03 02:22:37,072 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_pci_write16 [2022-11-03 02:22:37,072 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:22:37,072 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:22:37,072 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_free_buffers [2022-11-03 02:22:37,072 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_free_buffers [2022-11-03 02:22:37,072 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 02:22:37,072 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 02:22:37,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:22:37,072 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-03 02:22:37,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-03 02:22:37,073 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2022-11-03 02:22:37,073 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2022-11-03 02:22:37,073 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2022-11-03 02:22:37,073 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2022-11-03 02:22:37,073 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 02:22:37,073 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 02:22:37,073 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_read32 [2022-11-03 02:22:37,073 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_read32 [2022-11-03 02:22:37,074 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-03 02:22:37,074 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_set_multicast [2022-11-03 02:22:37,074 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_set_multicast [2022-11-03 02:22:37,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 02:22:37,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 02:22:37,074 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_prefetch_init [2022-11-03 02:22:37,074 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_prefetch_init [2022-11-03 02:22:37,074 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_reset [2022-11-03 02:22:37,075 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_reset [2022-11-03 02:22:37,075 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 02:22:37,075 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 02:22:37,075 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2022-11-03 02:22:37,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2022-11-03 02:22:37,075 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-03 02:22:37,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-03 02:22:37,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_phy_lock_of_sky2_port [2022-11-03 02:22:37,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_phy_lock_of_sky2_port [2022-11-03 02:22:37,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:22:37,076 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:22:37,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-03 02:22:37,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-03 02:22:37,076 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-03 02:22:37,076 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-03 02:22:37,076 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_vpd_wait [2022-11-03 02:22:37,076 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_vpd_wait [2022-11-03 02:22:37,076 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-03 02:22:37,077 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-03 02:22:37,077 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_shutdown [2022-11-03 02:22:37,077 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_shutdown [2022-11-03 02:22:37,077 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_read16 [2022-11-03 02:22:37,077 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_read16 [2022-11-03 02:22:37,077 INFO L130 BoogieDeclarations]: Found specification of procedure get_tx_le [2022-11-03 02:22:37,077 INFO L138 BoogieDeclarations]: Found implementation of procedure get_tx_le [2022-11-03 02:22:37,077 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_stop [2022-11-03 02:22:37,078 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_stop [2022-11-03 02:22:37,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:22:37,078 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:22:37,078 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:22:37,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:22:37,078 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_all_down [2022-11-03 02:22:37,078 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_all_down [2022-11-03 02:22:37,078 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-03 02:22:37,078 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-03 02:22:37,079 INFO L130 BoogieDeclarations]: Found specification of procedure __gm_phy_read [2022-11-03 02:22:37,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __gm_phy_read [2022-11-03 02:22:37,079 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:22:37,079 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:22:37,079 INFO L130 BoogieDeclarations]: Found specification of procedure pci_find_capability [2022-11-03 02:22:37,079 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_find_capability [2022-11-03 02:22:37,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 02:22:37,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 02:22:37,079 INFO L130 BoogieDeclarations]: Found specification of procedure gma_write16 [2022-11-03 02:22:37,080 INFO L138 BoogieDeclarations]: Found implementation of procedure gma_write16 [2022-11-03 02:22:37,080 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-03 02:22:37,080 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-03 02:22:37,080 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_next_rx [2022-11-03 02:22:37,080 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_next_rx [2022-11-03 02:22:37,080 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-03 02:22:37,080 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-03 02:22:37,080 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_irq [2022-11-03 02:22:37,081 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_irq [2022-11-03 02:22:37,081 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_get_eeprom_len [2022-11-03 02:22:37,081 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_get_eeprom_len [2022-11-03 02:22:37,081 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:22:37,081 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:22:37,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_79 [2022-11-03 02:22:37,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_79 [2022-11-03 02:22:37,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:22:37,081 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_us2clk [2022-11-03 02:22:37,082 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_us2clk [2022-11-03 02:22:37,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:22:37,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:22:37,082 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2022-11-03 02:22:37,082 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2022-11-03 02:22:37,082 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-03 02:22:37,082 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-03 02:22:37,082 INFO L130 BoogieDeclarations]: Found specification of procedure device_may_wakeup [2022-11-03 02:22:37,082 INFO L138 BoogieDeclarations]: Found implementation of procedure device_may_wakeup [2022-11-03 02:22:37,083 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-03 02:22:37,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-03 02:22:37,083 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-11-03 02:22:37,083 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-11-03 02:22:37,083 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_qset [2022-11-03 02:22:37,083 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_qset [2022-11-03 02:22:37,083 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_mhz [2022-11-03 02:22:37,083 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_mhz [2022-11-03 02:22:37,083 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 02:22:37,084 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 02:22:37,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:22:37,084 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:22:37,084 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2022-11-03 02:22:37,084 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2022-11-03 02:22:37,084 INFO L130 BoogieDeclarations]: Found specification of procedure get_stats32 [2022-11-03 02:22:37,084 INFO L138 BoogieDeclarations]: Found implementation of procedure get_stats32 [2022-11-03 02:22:37,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:22:37,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:22:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 02:22:37,085 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 02:22:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_supported_modes [2022-11-03 02:22:37,085 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_supported_modes [2022-11-03 02:22:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure gm_phy_read [2022-11-03 02:22:37,085 INFO L138 BoogieDeclarations]: Found implementation of procedure gm_phy_read [2022-11-03 02:22:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_alloc [2022-11-03 02:22:37,085 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_alloc [2022-11-03 02:22:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2022-11-03 02:22:37,086 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2022-11-03 02:22:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_tx_unlock [2022-11-03 02:22:37,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_tx_unlock [2022-11-03 02:22:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:22:37,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:22:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_show_addr [2022-11-03 02:22:37,086 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_show_addr [2022-11-03 02:22:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-03 02:22:37,086 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-03 02:22:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_close [2022-11-03 02:22:37,087 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_close [2022-11-03 02:22:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 02:22:37,087 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 02:22:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:22:37,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:22:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_start [2022-11-03 02:22:37,087 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_start [2022-11-03 02:22:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:22:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2022-11-03 02:22:37,088 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2022-11-03 02:22:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure get_stats64 [2022-11-03 02:22:37,088 INFO L138 BoogieDeclarations]: Found implementation of procedure get_stats64 [2022-11-03 02:22:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2022-11-03 02:22:37,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2022-11-03 02:22:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-03 02:22:37,088 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-03 02:22:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:22:37,088 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:22:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure pci_is_pcie [2022-11-03 02:22:37,089 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_is_pcie [2022-11-03 02:22:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:22:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-03 02:22:37,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-03 02:22:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:22:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 02:22:37,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 02:22:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_80 [2022-11-03 02:22:37,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_80 [2022-11-03 02:22:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:22:37,090 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:22:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 02:22:37,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 02:22:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 02:22:37,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 02:22:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_hw_up [2022-11-03 02:22:37,090 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_hw_up [2022-11-03 02:22:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interrupt_interrupt_instance_1 [2022-11-03 02:22:37,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interrupt_interrupt_instance_1 [2022-11-03 02:22:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interrupt_interrupt_instance_2 [2022-11-03 02:22:37,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interrupt_interrupt_instance_2 [2022-11-03 02:22:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-11-03 02:22:37,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-11-03 02:22:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_tx_unmap [2022-11-03 02:22:37,091 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_tx_unmap [2022-11-03 02:22:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_put_idx [2022-11-03 02:22:37,091 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_put_idx [2022-11-03 02:22:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:22:37,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:22:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_dma_map [2022-11-03 02:22:37,091 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_dma_map [2022-11-03 02:22:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:22:37,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:22:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_phy_power_up [2022-11-03 02:22:37,092 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_phy_power_up [2022-11-03 02:22:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_phy_init [2022-11-03 02:22:37,092 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_phy_init [2022-11-03 02:22:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-03 02:22:37,092 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-03 02:22:37,093 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_tx_complete [2022-11-03 02:22:37,093 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_tx_complete [2022-11-03 02:22:37,093 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2022-11-03 02:22:37,093 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2022-11-03 02:22:37,093 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-11-03 02:22:37,093 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-11-03 02:22:37,093 INFO L130 BoogieDeclarations]: Found specification of procedure gma_read16 [2022-11-03 02:22:37,093 INFO L138 BoogieDeclarations]: Found implementation of procedure gma_read16 [2022-11-03 02:22:37,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:22:37,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:22:37,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:22:37,094 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_all_up [2022-11-03 02:22:37,094 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_all_up [2022-11-03 02:22:37,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:22:37,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:22:37,094 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_tx_timeout [2022-11-03 02:22:37,094 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_tx_timeout [2022-11-03 02:22:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-03 02:22:37,095 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-03 02:22:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_wol_supported [2022-11-03 02:22:37,095 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_wol_supported [2022-11-03 02:22:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_pci_write32 [2022-11-03 02:22:37,095 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_pci_write32 [2022-11-03 02:22:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2022-11-03 02:22:37,095 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2022-11-03 02:22:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_submit [2022-11-03 02:22:37,096 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_submit [2022-11-03 02:22:37,096 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-03 02:22:37,096 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-03 02:22:37,096 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-03 02:22:37,096 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-03 02:22:37,096 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_vlan_mode [2022-11-03 02:22:37,096 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_vlan_mode [2022-11-03 02:22:37,096 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_read8 [2022-11-03 02:22:37,096 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_read8 [2022-11-03 02:22:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_update_begin [2022-11-03 02:22:37,097 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_update_begin [2022-11-03 02:22:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure gma_read32 [2022-11-03 02:22:37,097 INFO L138 BoogieDeclarations]: Found implementation of procedure gma_read32 [2022-11-03 02:22:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_phy_lock_of_sky2_port [2022-11-03 02:22:37,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_phy_lock_of_sky2_port [2022-11-03 02:22:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure gma_set_addr [2022-11-03 02:22:37,097 INFO L138 BoogieDeclarations]: Found implementation of procedure gma_set_addr [2022-11-03 02:22:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-11-03 02:22:37,098 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-11-03 02:22:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2022-11-03 02:22:37,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2022-11-03 02:22:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 02:22:37,098 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 02:22:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-03 02:22:37,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-03 02:22:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 02:22:37,099 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 02:22:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:22:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_nway_reset [2022-11-03 02:22:37,099 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_nway_reset [2022-11-03 02:22:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 02:22:37,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 02:22:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-03 02:22:37,099 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-03 02:22:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-03 02:22:37,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-03 02:22:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-03 02:22:37,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-03 02:22:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-03 02:22:37,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-03 02:22:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:22:37,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:22:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure tx_avail [2022-11-03 02:22:37,100 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_avail [2022-11-03 02:22:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_rx_unmap_skb [2022-11-03 02:22:37,100 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_rx_unmap_skb [2022-11-03 02:22:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-03 02:22:37,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-03 02:22:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_clk2us [2022-11-03 02:22:37,101 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_clk2us [2022-11-03 02:22:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_set_tx_stfwd [2022-11-03 02:22:37,101 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_set_tx_stfwd [2022-11-03 02:22:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_enable_rx_tx [2022-11-03 02:22:37,101 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_enable_rx_tx [2022-11-03 02:22:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:22:37,101 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:22:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2022-11-03 02:22:37,101 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2022-11-03 02:22:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-11-03 02:22:37,102 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-11-03 02:22:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_setup_irq [2022-11-03 02:22:37,102 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_setup_irq [2022-11-03 02:22:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:22:37,102 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:22:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-11-03 02:22:37,102 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-11-03 02:22:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-03 02:22:37,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-03 02:22:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_is_copper [2022-11-03 02:22:37,103 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_is_copper [2022-11-03 02:22:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 02:22:37,103 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 02:22:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_suspend [2022-11-03 02:22:37,103 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_suspend [2022-11-03 02:22:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-03 02:22:37,103 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-03 02:22:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_write16 [2022-11-03 02:22:37,103 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_write16 [2022-11-03 02:22:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:22:37,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:22:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-03 02:22:37,104 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-03 02:22:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_write8 [2022-11-03 02:22:37,104 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_write8 [2022-11-03 02:22:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure gm_phy_write [2022-11-03 02:22:37,104 INFO L138 BoogieDeclarations]: Found implementation of procedure gm_phy_write [2022-11-03 02:22:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure dql_avail [2022-11-03 02:22:37,104 INFO L138 BoogieDeclarations]: Found implementation of procedure dql_avail [2022-11-03 02:22:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 02:22:37,104 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 02:22:37,105 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_write32 [2022-11-03 02:22:37,105 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_write32 [2022-11-03 02:22:37,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:22:37,105 INFO L130 BoogieDeclarations]: Found specification of procedure gma_read64 [2022-11-03 02:22:37,105 INFO L138 BoogieDeclarations]: Found implementation of procedure gma_read64 [2022-11-03 02:22:37,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:22:37,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:22:37,105 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-03 02:22:37,105 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-03 02:22:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure sky2_open [2022-11-03 02:22:37,106 INFO L138 BoogieDeclarations]: Found implementation of procedure sky2_open [2022-11-03 02:22:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-03 02:22:38,717 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:22:38,735 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:22:38,909 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:22:59,908 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:23:02,612 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:23:02,613 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-03 02:23:02,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:23:02 BoogieIcfgContainer [2022-11-03 02:23:02,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:23:02,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:23:02,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:23:02,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:23:02,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:22:27" (1/3) ... [2022-11-03 02:23:02,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c491286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:23:02, skipping insertion in model container [2022-11-03 02:23:02,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:35" (2/3) ... [2022-11-03 02:23:02,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c491286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:23:02, skipping insertion in model container [2022-11-03 02:23:02,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:23:02" (3/3) ... [2022-11-03 02:23:02,631 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-marvell-sky2.cil.i [2022-11-03 02:23:02,651 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:23:02,651 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 02:23:02,786 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:23:02,792 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;@1c0c1faa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:23:02,792 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 02:23:02,806 INFO L276 IsEmpty]: Start isEmpty. Operand has 3048 states, 1684 states have (on average 1.2838479809976246) internal successors, (2162), 1790 states have internal predecessors, (2162), 1154 states have call successors, (1154), 208 states have call predecessors, (1154), 207 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) [2022-11-03 02:23:02,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 02:23:02,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:02,818 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:02,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:23:02,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:02,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1875707537, now seen corresponding path program 1 times [2022-11-03 02:23:02,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:02,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703784816] [2022-11-03 02:23:02,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:02,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:04,600 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:23:04,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:04,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703784816] [2022-11-03 02:23:04,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703784816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:04,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:04,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:23:04,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977951285] [2022-11-03 02:23:04,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:04,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:23:04,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:04,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:23:04,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:23:04,662 INFO L87 Difference]: Start difference. First operand has 3048 states, 1684 states have (on average 1.2838479809976246) internal successors, (2162), 1790 states have internal predecessors, (2162), 1154 states have call successors, (1154), 208 states have call predecessors, (1154), 207 states have return successors, (1146), 1114 states have call predecessors, (1146), 1146 states have call successors, (1146) Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:23:11,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:12,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:12,554 INFO L93 Difference]: Finished difference Result 6216 states and 9168 transitions. [2022-11-03 02:23:12,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:23:12,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 47 [2022-11-03 02:23:12,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:12,602 INFO L225 Difference]: With dead ends: 6216 [2022-11-03 02:23:12,602 INFO L226 Difference]: Without dead ends: 3221 [2022-11-03 02:23:12,625 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 [2022-11-03 02:23:12,628 INFO L413 NwaCegarLoop]: 4038 mSDtfsCounter, 4370 mSDsluCounter, 9316 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4387 SdHoareTripleChecker+Valid, 12357 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:12,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4387 Valid, 12357 Invalid, 1506 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1503 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-11-03 02:23:12,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3221 states. [2022-11-03 02:23:12,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3221 to 3217. [2022-11-03 02:23:12,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3217 states, 1780 states have (on average 1.2730337078651686) internal successors, (2266), 1887 states have internal predecessors, (2266), 1201 states have call successors, (1201), 234 states have call predecessors, (1201), 233 states have return successors, (1198), 1164 states have call predecessors, (1198), 1198 states have call successors, (1198) [2022-11-03 02:23:12,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3217 states to 3217 states and 4665 transitions. [2022-11-03 02:23:12,987 INFO L78 Accepts]: Start accepts. Automaton has 3217 states and 4665 transitions. Word has length 47 [2022-11-03 02:23:12,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:12,990 INFO L495 AbstractCegarLoop]: Abstraction has 3217 states and 4665 transitions. [2022-11-03 02:23:12,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:23:12,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3217 states and 4665 transitions. [2022-11-03 02:23:13,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-03 02:23:13,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:13,001 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:13,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:23:13,003 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:23:13,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:13,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2036689729, now seen corresponding path program 1 times [2022-11-03 02:23:13,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:13,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837327799] [2022-11-03 02:23:13,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:13,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:14,044 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:23:14,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:14,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837327799] [2022-11-03 02:23:14,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837327799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:14,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:14,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:23:14,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861357303] [2022-11-03 02:23:14,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:14,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:23:14,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:14,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:23:14,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:23:14,053 INFO L87 Difference]: Start difference. First operand 3217 states and 4665 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 02:23:18,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:22,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:22,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:22,442 INFO L93 Difference]: Finished difference Result 3235 states and 4678 transitions. [2022-11-03 02:23:22,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:23:22,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 52 [2022-11-03 02:23:22,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:22,468 INFO L225 Difference]: With dead ends: 3235 [2022-11-03 02:23:22,469 INFO L226 Difference]: Without dead ends: 3233 [2022-11-03 02:23:22,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:23:22,473 INFO L413 NwaCegarLoop]: 3948 mSDtfsCounter, 4366 mSDsluCounter, 8877 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4381 SdHoareTripleChecker+Valid, 11857 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:22,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4381 Valid, 11857 Invalid, 1474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1472 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2022-11-03 02:23:22,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3233 states. [2022-11-03 02:23:22,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3233 to 3233. [2022-11-03 02:23:22,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3233 states, 1789 states have (on average 1.271660145332588) internal successors, (2275), 1896 states have internal predecessors, (2275), 1202 states have call successors, (1202), 240 states have call predecessors, (1202), 239 states have return successors, (1199), 1165 states have call predecessors, (1199), 1199 states have call successors, (1199) [2022-11-03 02:23:22,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3233 states to 3233 states and 4676 transitions. [2022-11-03 02:23:22,743 INFO L78 Accepts]: Start accepts. Automaton has 3233 states and 4676 transitions. Word has length 52 [2022-11-03 02:23:22,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:22,744 INFO L495 AbstractCegarLoop]: Abstraction has 3233 states and 4676 transitions. [2022-11-03 02:23:22,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 02:23:22,745 INFO L276 IsEmpty]: Start isEmpty. Operand 3233 states and 4676 transitions. [2022-11-03 02:23:22,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 02:23:22,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:22,747 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:22,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:23:22,748 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:23:22,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:22,749 INFO L85 PathProgramCache]: Analyzing trace with hash -2095277530, now seen corresponding path program 1 times [2022-11-03 02:23:22,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:22,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55026104] [2022-11-03 02:23:22,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:22,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:23,906 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-03 02:23:23,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:23,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55026104] [2022-11-03 02:23:23,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55026104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:23,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:23,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:23:23,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19414994] [2022-11-03 02:23:23,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:23,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:23:23,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:23,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:23:23,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:23:23,911 INFO L87 Difference]: Start difference. First operand 3233 states and 4676 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:23:29,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:32,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:33,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:33,018 INFO L93 Difference]: Finished difference Result 3249 states and 4693 transitions. [2022-11-03 02:23:33,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:23:33,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 65 [2022-11-03 02:23:33,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:33,043 INFO L225 Difference]: With dead ends: 3249 [2022-11-03 02:23:33,043 INFO L226 Difference]: Without dead ends: 3247 [2022-11-03 02:23:33,046 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 [2022-11-03 02:23:33,047 INFO L413 NwaCegarLoop]: 3951 mSDtfsCounter, 4356 mSDsluCounter, 8896 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4372 SdHoareTripleChecker+Valid, 11877 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:33,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4372 Valid, 11877 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1474 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2022-11-03 02:23:33,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3247 states. [2022-11-03 02:23:33,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3247 to 3245. [2022-11-03 02:23:33,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3245 states, 1797 states have (on average 1.271563717306622) internal successors, (2285), 1904 states have internal predecessors, (2285), 1203 states have call successors, (1203), 243 states have call predecessors, (1203), 242 states have return successors, (1200), 1166 states have call predecessors, (1200), 1200 states have call successors, (1200) [2022-11-03 02:23:33,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3245 states to 3245 states and 4688 transitions. [2022-11-03 02:23:33,329 INFO L78 Accepts]: Start accepts. Automaton has 3245 states and 4688 transitions. Word has length 65 [2022-11-03 02:23:33,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:33,330 INFO L495 AbstractCegarLoop]: Abstraction has 3245 states and 4688 transitions. [2022-11-03 02:23:33,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:23:33,331 INFO L276 IsEmpty]: Start isEmpty. Operand 3245 states and 4688 transitions. [2022-11-03 02:23:33,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 02:23:33,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:33,333 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:33,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:23:33,333 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:23:33,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:33,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1363750977, now seen corresponding path program 1 times [2022-11-03 02:23:33,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:33,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115750527] [2022-11-03 02:23:33,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:33,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:34,266 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-03 02:23:34,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:34,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115750527] [2022-11-03 02:23:34,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115750527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:34,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:34,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:23:34,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452528542] [2022-11-03 02:23:34,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:34,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:23:34,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:34,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:23:34,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:23:34,269 INFO L87 Difference]: Start difference. First operand 3245 states and 4688 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:23:42,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:42,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:42,400 INFO L93 Difference]: Finished difference Result 3251 states and 4693 transitions. [2022-11-03 02:23:42,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:23:42,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 62 [2022-11-03 02:23:42,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:42,422 INFO L225 Difference]: With dead ends: 3251 [2022-11-03 02:23:42,422 INFO L226 Difference]: Without dead ends: 3249 [2022-11-03 02:23:42,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:23:42,427 INFO L413 NwaCegarLoop]: 3948 mSDtfsCounter, 4366 mSDsluCounter, 8877 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4379 SdHoareTripleChecker+Valid, 11857 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:42,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4379 Valid, 11857 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1472 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-11-03 02:23:42,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3249 states. [2022-11-03 02:23:42,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3249 to 3249. [2022-11-03 02:23:42,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3249 states, 1800 states have (on average 1.271111111111111) internal successors, (2288), 1907 states have internal predecessors, (2288), 1203 states have call successors, (1203), 244 states have call predecessors, (1203), 243 states have return successors, (1200), 1166 states have call predecessors, (1200), 1200 states have call successors, (1200) [2022-11-03 02:23:42,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 4691 transitions. [2022-11-03 02:23:42,676 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 4691 transitions. Word has length 62 [2022-11-03 02:23:42,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:42,676 INFO L495 AbstractCegarLoop]: Abstraction has 3249 states and 4691 transitions. [2022-11-03 02:23:42,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:23:42,677 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 4691 transitions. [2022-11-03 02:23:42,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 02:23:42,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:42,679 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:42,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:23:42,680 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)] === [2022-11-03 02:23:42,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:42,681 INFO L85 PathProgramCache]: Analyzing trace with hash 2117902225, now seen corresponding path program 1 times [2022-11-03 02:23:42,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:42,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187293139] [2022-11-03 02:23:42,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:42,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:43,936 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-03 02:23:43,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:43,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187293139] [2022-11-03 02:23:43,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187293139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:43,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:43,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:23:43,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034230562] [2022-11-03 02:23:43,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:43,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:23:43,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:43,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:23:43,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:23:43,941 INFO L87 Difference]: Start difference. First operand 3249 states and 4691 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:23:51,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:51,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:51,462 INFO L93 Difference]: Finished difference Result 3255 states and 4696 transitions. [2022-11-03 02:23:51,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:23:51,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 67 [2022-11-03 02:23:51,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:51,489 INFO L225 Difference]: With dead ends: 3255 [2022-11-03 02:23:51,489 INFO L226 Difference]: Without dead ends: 3253 [2022-11-03 02:23:51,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:23:51,494 INFO L413 NwaCegarLoop]: 3948 mSDtfsCounter, 4366 mSDsluCounter, 8877 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4378 SdHoareTripleChecker+Valid, 11857 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:51,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4378 Valid, 11857 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1472 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-03 02:23:51,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3253 states. [2022-11-03 02:23:51,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3253 to 3253. [2022-11-03 02:23:51,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3253 states, 1803 states have (on average 1.2706600110926234) internal successors, (2291), 1910 states have internal predecessors, (2291), 1203 states have call successors, (1203), 245 states have call predecessors, (1203), 244 states have return successors, (1200), 1166 states have call predecessors, (1200), 1200 states have call successors, (1200) [2022-11-03 02:23:51,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3253 states to 3253 states and 4694 transitions. [2022-11-03 02:23:51,925 INFO L78 Accepts]: Start accepts. Automaton has 3253 states and 4694 transitions. Word has length 67 [2022-11-03 02:23:51,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:51,926 INFO L495 AbstractCegarLoop]: Abstraction has 3253 states and 4694 transitions. [2022-11-03 02:23:51,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:23:51,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3253 states and 4694 transitions. [2022-11-03 02:23:51,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 02:23:51,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:51,929 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:51,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:23:51,930 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)] === [2022-11-03 02:23:51,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:51,930 INFO L85 PathProgramCache]: Analyzing trace with hash -785678582, now seen corresponding path program 1 times [2022-11-03 02:23:51,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:51,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324740494] [2022-11-03 02:23:51,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:51,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-03 02:23:52,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:52,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324740494] [2022-11-03 02:23:52,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324740494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:52,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:52,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:23:52,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476904339] [2022-11-03 02:23:52,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:52,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:23:52,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:52,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:23:52,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:23:52,987 INFO L87 Difference]: Start difference. First operand 3253 states and 4694 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:23:59,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:00,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:00,071 INFO L93 Difference]: Finished difference Result 3259 states and 4699 transitions. [2022-11-03 02:24:00,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:24:00,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 80 [2022-11-03 02:24:00,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:00,089 INFO L225 Difference]: With dead ends: 3259 [2022-11-03 02:24:00,089 INFO L226 Difference]: Without dead ends: 3257 [2022-11-03 02:24:00,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:24:00,093 INFO L413 NwaCegarLoop]: 3948 mSDtfsCounter, 4360 mSDsluCounter, 8877 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4371 SdHoareTripleChecker+Valid, 11857 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:00,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4371 Valid, 11857 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1472 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-03 02:24:00,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3257 states. [2022-11-03 02:24:00,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3257 to 3257. [2022-11-03 02:24:00,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3257 states, 1806 states have (on average 1.2702104097452935) internal successors, (2294), 1913 states have internal predecessors, (2294), 1203 states have call successors, (1203), 246 states have call predecessors, (1203), 245 states have return successors, (1200), 1166 states have call predecessors, (1200), 1200 states have call successors, (1200) [2022-11-03 02:24:00,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3257 states to 3257 states and 4697 transitions. [2022-11-03 02:24:00,362 INFO L78 Accepts]: Start accepts. Automaton has 3257 states and 4697 transitions. Word has length 80 [2022-11-03 02:24:00,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:00,362 INFO L495 AbstractCegarLoop]: Abstraction has 3257 states and 4697 transitions. [2022-11-03 02:24:00,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:24:00,363 INFO L276 IsEmpty]: Start isEmpty. Operand 3257 states and 4697 transitions. [2022-11-03 02:24:00,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-03 02:24:00,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:00,365 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:00,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:24:00,365 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:24:00,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:00,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1243186193, now seen corresponding path program 1 times [2022-11-03 02:24:00,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:00,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746433194] [2022-11-03 02:24:00,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:00,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:01,102 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-03 02:24:01,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:01,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746433194] [2022-11-03 02:24:01,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746433194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:01,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:01,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:24:01,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141163609] [2022-11-03 02:24:01,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:01,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:24:01,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:01,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:24:01,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:24:01,105 INFO L87 Difference]: Start difference. First operand 3257 states and 4697 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:24:05,814 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 [] [2022-11-03 02:24:09,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:10,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:10,318 INFO L93 Difference]: Finished difference Result 3265 states and 4705 transitions. [2022-11-03 02:24:10,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:24:10,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 77 [2022-11-03 02:24:10,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:10,333 INFO L225 Difference]: With dead ends: 3265 [2022-11-03 02:24:10,333 INFO L226 Difference]: Without dead ends: 3263 [2022-11-03 02:24:10,336 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 [2022-11-03 02:24:10,337 INFO L413 NwaCegarLoop]: 3999 mSDtfsCounter, 4363 mSDsluCounter, 9185 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4373 SdHoareTripleChecker+Valid, 12195 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:10,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4373 Valid, 12195 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1493 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2022-11-03 02:24:10,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3263 states. [2022-11-03 02:24:10,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3263 to 3261. [2022-11-03 02:24:10,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3261 states, 1809 states have (on average 1.269762299613046) internal successors, (2297), 1916 states have internal predecessors, (2297), 1203 states have call successors, (1203), 247 states have call predecessors, (1203), 246 states have return successors, (1200), 1166 states have call predecessors, (1200), 1200 states have call successors, (1200) [2022-11-03 02:24:10,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3261 states to 3261 states and 4700 transitions. [2022-11-03 02:24:10,807 INFO L78 Accepts]: Start accepts. Automaton has 3261 states and 4700 transitions. Word has length 77 [2022-11-03 02:24:10,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:10,808 INFO L495 AbstractCegarLoop]: Abstraction has 3261 states and 4700 transitions. [2022-11-03 02:24:10,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:24:10,809 INFO L276 IsEmpty]: Start isEmpty. Operand 3261 states and 4700 transitions. [2022-11-03 02:24:10,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-03 02:24:10,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:10,816 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:10,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:24:10,817 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)] === [2022-11-03 02:24:10,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:10,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1689195967, now seen corresponding path program 1 times [2022-11-03 02:24:10,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:10,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973797258] [2022-11-03 02:24:10,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:10,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:11,591 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-03 02:24:11,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:11,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973797258] [2022-11-03 02:24:11,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973797258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:11,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:11,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:24:11,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80750637] [2022-11-03 02:24:11,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:11,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:24:11,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:11,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:24:11,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:24:11,595 INFO L87 Difference]: Start difference. First operand 3261 states and 4700 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:24:17,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:18,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:18,606 INFO L93 Difference]: Finished difference Result 3267 states and 4705 transitions. [2022-11-03 02:24:18,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:24:18,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 82 [2022-11-03 02:24:18,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:18,624 INFO L225 Difference]: With dead ends: 3267 [2022-11-03 02:24:18,624 INFO L226 Difference]: Without dead ends: 3265 [2022-11-03 02:24:18,627 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 [2022-11-03 02:24:18,628 INFO L413 NwaCegarLoop]: 3947 mSDtfsCounter, 4402 mSDsluCounter, 8838 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4409 SdHoareTripleChecker+Valid, 11819 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:18,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4409 Valid, 11819 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1470 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-11-03 02:24:18,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2022-11-03 02:24:18,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 3265. [2022-11-03 02:24:18,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3265 states, 1812 states have (on average 1.2693156732891833) internal successors, (2300), 1919 states have internal predecessors, (2300), 1203 states have call successors, (1203), 248 states have call predecessors, (1203), 247 states have return successors, (1200), 1166 states have call predecessors, (1200), 1200 states have call successors, (1200) [2022-11-03 02:24:18,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3265 states to 3265 states and 4703 transitions. [2022-11-03 02:24:18,922 INFO L78 Accepts]: Start accepts. Automaton has 3265 states and 4703 transitions. Word has length 82 [2022-11-03 02:24:18,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:18,923 INFO L495 AbstractCegarLoop]: Abstraction has 3265 states and 4703 transitions. [2022-11-03 02:24:18,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:24:18,923 INFO L276 IsEmpty]: Start isEmpty. Operand 3265 states and 4703 transitions. [2022-11-03 02:24:18,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-03 02:24:18,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:18,925 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:18,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:24:18,926 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)] === [2022-11-03 02:24:18,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:18,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1323529446, now seen corresponding path program 1 times [2022-11-03 02:24:18,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:18,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118164327] [2022-11-03 02:24:18,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:18,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:19,743 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-03 02:24:19,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:19,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118164327] [2022-11-03 02:24:19,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118164327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:19,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:19,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:24:19,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874159733] [2022-11-03 02:24:19,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:19,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:24:19,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:19,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:24:19,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:24:19,747 INFO L87 Difference]: Start difference. First operand 3265 states and 4703 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:24:26,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:26,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:26,907 INFO L93 Difference]: Finished difference Result 3271 states and 4708 transitions. [2022-11-03 02:24:26,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:24:26,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 95 [2022-11-03 02:24:26,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:26,927 INFO L225 Difference]: With dead ends: 3271 [2022-11-03 02:24:26,927 INFO L226 Difference]: Without dead ends: 3269 [2022-11-03 02:24:26,930 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 [2022-11-03 02:24:26,930 INFO L413 NwaCegarLoop]: 3948 mSDtfsCounter, 4360 mSDsluCounter, 8877 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4368 SdHoareTripleChecker+Valid, 11857 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:26,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4368 Valid, 11857 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1472 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2022-11-03 02:24:26,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2022-11-03 02:24:27,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3269. [2022-11-03 02:24:27,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3269 states, 1815 states have (on average 1.268870523415978) internal successors, (2303), 1922 states have internal predecessors, (2303), 1203 states have call successors, (1203), 249 states have call predecessors, (1203), 248 states have return successors, (1200), 1166 states have call predecessors, (1200), 1200 states have call successors, (1200) [2022-11-03 02:24:27,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3269 states to 3269 states and 4706 transitions. [2022-11-03 02:24:27,248 INFO L78 Accepts]: Start accepts. Automaton has 3269 states and 4706 transitions. Word has length 95 [2022-11-03 02:24:27,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:27,248 INFO L495 AbstractCegarLoop]: Abstraction has 3269 states and 4706 transitions. [2022-11-03 02:24:27,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:24:27,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3269 states and 4706 transitions. [2022-11-03 02:24:27,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-03 02:24:27,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:27,252 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:27,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:24:27,252 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)] === [2022-11-03 02:24:27,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:27,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1456267073, now seen corresponding path program 1 times [2022-11-03 02:24:27,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:27,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38130911] [2022-11-03 02:24:27,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:27,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:27,983 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-03 02:24:27,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:27,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38130911] [2022-11-03 02:24:27,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38130911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:27,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:27,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:24:27,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136287082] [2022-11-03 02:24:27,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:27,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:24:27,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:27,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:24:27,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:24:27,986 INFO L87 Difference]: Start difference. First operand 3269 states and 4706 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:24:34,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:36,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:38,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:38,795 INFO L93 Difference]: Finished difference Result 5837 states and 8463 transitions. [2022-11-03 02:24:38,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:24:38,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 92 [2022-11-03 02:24:38,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:38,838 INFO L225 Difference]: With dead ends: 5837 [2022-11-03 02:24:38,838 INFO L226 Difference]: Without dead ends: 5835 [2022-11-03 02:24:38,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:24:38,844 INFO L413 NwaCegarLoop]: 4934 mSDtfsCounter, 3936 mSDsluCounter, 14996 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3943 SdHoareTripleChecker+Valid, 18507 SdHoareTripleChecker+Invalid, 1939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:38,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3943 Valid, 18507 Invalid, 1939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1934 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2022-11-03 02:24:38,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5835 states. [2022-11-03 02:24:39,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5835 to 5828. [2022-11-03 02:24:39,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5828 states, 3253 states have (on average 1.2739010144482017) internal successors, (4144), 3452 states have internal predecessors, (4144), 2116 states have call successors, (2116), 464 states have call predecessors, (2116), 456 states have return successors, (2197), 2034 states have call predecessors, (2197), 2110 states have call successors, (2197) [2022-11-03 02:24:39,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5828 states to 5828 states and 8457 transitions. [2022-11-03 02:24:39,444 INFO L78 Accepts]: Start accepts. Automaton has 5828 states and 8457 transitions. Word has length 92 [2022-11-03 02:24:39,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:39,445 INFO L495 AbstractCegarLoop]: Abstraction has 5828 states and 8457 transitions. [2022-11-03 02:24:39,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:24:39,445 INFO L276 IsEmpty]: Start isEmpty. Operand 5828 states and 8457 transitions. [2022-11-03 02:24:39,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-03 02:24:39,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:39,448 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:39,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:24:39,448 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)] === [2022-11-03 02:24:39,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:39,449 INFO L85 PathProgramCache]: Analyzing trace with hash -361136879, now seen corresponding path program 1 times [2022-11-03 02:24:39,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:39,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35323092] [2022-11-03 02:24:39,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:39,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:40,360 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-03 02:24:40,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:40,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35323092] [2022-11-03 02:24:40,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35323092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:40,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:40,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:24:40,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802140411] [2022-11-03 02:24:40,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:40,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:24:40,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:40,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:24:40,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:24:40,363 INFO L87 Difference]: Start difference. First operand 5828 states and 8457 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 02:24:45,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:49,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:51,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:51,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:51,877 INFO L93 Difference]: Finished difference Result 5838 states and 8466 transitions. [2022-11-03 02:24:51,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:24:51,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 97 [2022-11-03 02:24:51,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:51,910 INFO L225 Difference]: With dead ends: 5838 [2022-11-03 02:24:51,910 INFO L226 Difference]: Without dead ends: 5836 [2022-11-03 02:24:51,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:24:51,916 INFO L413 NwaCegarLoop]: 3947 mSDtfsCounter, 4402 mSDsluCounter, 8838 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4406 SdHoareTripleChecker+Valid, 11819 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:51,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4406 Valid, 11819 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1469 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2022-11-03 02:24:51,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5836 states. [2022-11-03 02:24:52,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5836 to 5836. [2022-11-03 02:24:52,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5836 states, 3259 states have (on average 1.2733967474685486) internal successors, (4150), 3458 states have internal predecessors, (4150), 2116 states have call successors, (2116), 466 states have call predecessors, (2116), 458 states have return successors, (2197), 2034 states have call predecessors, (2197), 2110 states have call successors, (2197) [2022-11-03 02:24:52,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5836 states to 5836 states and 8463 transitions. [2022-11-03 02:24:52,713 INFO L78 Accepts]: Start accepts. Automaton has 5836 states and 8463 transitions. Word has length 97 [2022-11-03 02:24:52,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:52,714 INFO L495 AbstractCegarLoop]: Abstraction has 5836 states and 8463 transitions. [2022-11-03 02:24:52,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 02:24:52,714 INFO L276 IsEmpty]: Start isEmpty. Operand 5836 states and 8463 transitions. [2022-11-03 02:24:52,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-03 02:24:52,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:52,718 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:52,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:24:52,718 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)] === [2022-11-03 02:24:52,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:52,720 INFO L85 PathProgramCache]: Analyzing trace with hash 248978367, now seen corresponding path program 1 times [2022-11-03 02:24:52,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:52,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699492811] [2022-11-03 02:24:52,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:52,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-03 02:24:53,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:53,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699492811] [2022-11-03 02:24:53,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699492811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:53,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:53,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:24:53,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758757077] [2022-11-03 02:24:53,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:53,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:24:53,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:53,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:24:53,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:24:53,436 INFO L87 Difference]: Start difference. First operand 5836 states and 8463 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:24:57,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:00,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:00,638 INFO L93 Difference]: Finished difference Result 5846 states and 8472 transitions. [2022-11-03 02:25:00,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:25:00,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 102 [2022-11-03 02:25:00,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:00,668 INFO L225 Difference]: With dead ends: 5846 [2022-11-03 02:25:00,668 INFO L226 Difference]: Without dead ends: 5844 [2022-11-03 02:25:00,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:25:00,674 INFO L413 NwaCegarLoop]: 3947 mSDtfsCounter, 4402 mSDsluCounter, 8838 mSDsCounter, 0 mSdLazyCounter, 1471 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4405 SdHoareTripleChecker+Valid, 11819 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:00,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4405 Valid, 11819 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1471 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-03 02:25:00,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5844 states. [2022-11-03 02:25:01,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5844 to 5844. [2022-11-03 02:25:01,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5844 states, 3265 states have (on average 1.272894333843798) internal successors, (4156), 3464 states have internal predecessors, (4156), 2116 states have call successors, (2116), 468 states have call predecessors, (2116), 460 states have return successors, (2197), 2034 states have call predecessors, (2197), 2110 states have call successors, (2197) [2022-11-03 02:25:01,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5844 states to 5844 states and 8469 transitions. [2022-11-03 02:25:01,361 INFO L78 Accepts]: Start accepts. Automaton has 5844 states and 8469 transitions. Word has length 102 [2022-11-03 02:25:01,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:01,362 INFO L495 AbstractCegarLoop]: Abstraction has 5844 states and 8469 transitions. [2022-11-03 02:25:01,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:25:01,363 INFO L276 IsEmpty]: Start isEmpty. Operand 5844 states and 8469 transitions. [2022-11-03 02:25:01,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:25:01,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:01,366 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:01,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:25:01,367 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)] === [2022-11-03 02:25:01,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:01,367 INFO L85 PathProgramCache]: Analyzing trace with hash 2025263462, now seen corresponding path program 1 times [2022-11-03 02:25:01,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:01,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401862262] [2022-11-03 02:25:01,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:01,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-11-03 02:25:02,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:02,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401862262] [2022-11-03 02:25:02,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401862262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:02,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:02,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:02,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305420802] [2022-11-03 02:25:02,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:02,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:02,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:02,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:02,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:02,160 INFO L87 Difference]: Start difference. First operand 5844 states and 8469 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:25:09,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:12,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:13,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:13,040 INFO L93 Difference]: Finished difference Result 5854 states and 8478 transitions. [2022-11-03 02:25:13,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:25:13,041 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 115 [2022-11-03 02:25:13,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:13,067 INFO L225 Difference]: With dead ends: 5854 [2022-11-03 02:25:13,067 INFO L226 Difference]: Without dead ends: 5852 [2022-11-03 02:25:13,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:25:13,072 INFO L413 NwaCegarLoop]: 3991 mSDtfsCounter, 4321 mSDsluCounter, 9166 mSDsCounter, 0 mSdLazyCounter, 1489 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4327 SdHoareTripleChecker+Valid, 12171 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1489 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:13,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4327 Valid, 12171 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1489 Invalid, 2 Unknown, 0 Unchecked, 10.3s Time] [2022-11-03 02:25:13,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5852 states. [2022-11-03 02:25:13,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5852 to 5852. [2022-11-03 02:25:13,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5852 states, 3271 states have (on average 1.2723937633751146) internal successors, (4162), 3470 states have internal predecessors, (4162), 2116 states have call successors, (2116), 470 states have call predecessors, (2116), 462 states have return successors, (2197), 2034 states have call predecessors, (2197), 2110 states have call successors, (2197) [2022-11-03 02:25:13,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5852 states to 5852 states and 8475 transitions. [2022-11-03 02:25:13,582 INFO L78 Accepts]: Start accepts. Automaton has 5852 states and 8475 transitions. Word has length 115 [2022-11-03 02:25:13,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:13,582 INFO L495 AbstractCegarLoop]: Abstraction has 5852 states and 8475 transitions. [2022-11-03 02:25:13,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:25:13,583 INFO L276 IsEmpty]: Start isEmpty. Operand 5852 states and 8475 transitions. [2022-11-03 02:25:13,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-03 02:25:13,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:13,586 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:13,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:25:13,587 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:25:13,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:13,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1029577822, now seen corresponding path program 1 times [2022-11-03 02:25:13,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:13,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840351332] [2022-11-03 02:25:13,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:13,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:15,778 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-03 02:25:15,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:15,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840351332] [2022-11-03 02:25:15,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840351332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:15,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:15,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:15,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935177203] [2022-11-03 02:25:15,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:15,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:15,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:15,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:15,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:15,782 INFO L87 Difference]: Start difference. First operand 5852 states and 8475 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:25:24,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:26,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:30,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:30,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:30,926 INFO L93 Difference]: Finished difference Result 5865 states and 8484 transitions. [2022-11-03 02:25:30,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:25:30,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 124 [2022-11-03 02:25:30,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:30,956 INFO L225 Difference]: With dead ends: 5865 [2022-11-03 02:25:30,956 INFO L226 Difference]: Without dead ends: 5863 [2022-11-03 02:25:30,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:25:30,962 INFO L413 NwaCegarLoop]: 4931 mSDtfsCounter, 3919 mSDsluCounter, 15008 mSDsCounter, 0 mSdLazyCounter, 1921 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3924 SdHoareTripleChecker+Valid, 18516 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1921 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:30,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3924 Valid, 18516 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1921 Invalid, 3 Unknown, 0 Unchecked, 14.3s Time] [2022-11-03 02:25:30,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5863 states. [2022-11-03 02:25:31,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5863 to 5856. [2022-11-03 02:25:31,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5856 states, 3274 states have (on average 1.2721441661576054) internal successors, (4165), 3473 states have internal predecessors, (4165), 2116 states have call successors, (2116), 471 states have call predecessors, (2116), 463 states have return successors, (2197), 2034 states have call predecessors, (2197), 2110 states have call successors, (2197) [2022-11-03 02:25:31,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5856 states to 5856 states and 8478 transitions. [2022-11-03 02:25:31,750 INFO L78 Accepts]: Start accepts. Automaton has 5856 states and 8478 transitions. Word has length 124 [2022-11-03 02:25:31,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:31,751 INFO L495 AbstractCegarLoop]: Abstraction has 5856 states and 8478 transitions. [2022-11-03 02:25:31,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:25:31,751 INFO L276 IsEmpty]: Start isEmpty. Operand 5856 states and 8478 transitions. [2022-11-03 02:25:31,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-03 02:25:31,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:31,755 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:31,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 02:25:31,755 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)] === [2022-11-03 02:25:31,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:31,756 INFO L85 PathProgramCache]: Analyzing trace with hash -46390262, now seen corresponding path program 1 times [2022-11-03 02:25:31,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:31,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360795027] [2022-11-03 02:25:31,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:31,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:32,503 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-11-03 02:25:32,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:32,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360795027] [2022-11-03 02:25:32,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360795027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:32,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:32,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:32,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372057600] [2022-11-03 02:25:32,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:32,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:32,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:32,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:32,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:32,506 INFO L87 Difference]: Start difference. First operand 5856 states and 8478 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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) [2022-11-03 02:25:37,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:38,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:40,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:40,886 INFO L93 Difference]: Finished difference Result 5866 states and 8487 transitions. [2022-11-03 02:25:40,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:25:40,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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 120 [2022-11-03 02:25:40,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:40,912 INFO L225 Difference]: With dead ends: 5866 [2022-11-03 02:25:40,912 INFO L226 Difference]: Without dead ends: 5862 [2022-11-03 02:25:40,916 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 [2022-11-03 02:25:40,917 INFO L413 NwaCegarLoop]: 3947 mSDtfsCounter, 4396 mSDsluCounter, 8838 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4397 SdHoareTripleChecker+Valid, 11819 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:40,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4397 Valid, 11819 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1470 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-03 02:25:40,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5862 states. [2022-11-03 02:25:41,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5862 to 5862. [2022-11-03 02:25:41,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5862 states, 3279 states have (on average 1.2714242146996035) internal successors, (4169), 3477 states have internal predecessors, (4169), 2116 states have call successors, (2116), 473 states have call predecessors, (2116), 464 states have return successors, (2197), 2034 states have call predecessors, (2197), 2110 states have call successors, (2197) [2022-11-03 02:25:41,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5862 states to 5862 states and 8482 transitions. [2022-11-03 02:25:41,579 INFO L78 Accepts]: Start accepts. Automaton has 5862 states and 8482 transitions. Word has length 120 [2022-11-03 02:25:41,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:41,580 INFO L495 AbstractCegarLoop]: Abstraction has 5862 states and 8482 transitions. [2022-11-03 02:25:41,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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) [2022-11-03 02:25:41,580 INFO L276 IsEmpty]: Start isEmpty. Operand 5862 states and 8482 transitions. [2022-11-03 02:25:41,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-03 02:25:41,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:41,584 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:41,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 02:25:41,585 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:25:41,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:41,585 INFO L85 PathProgramCache]: Analyzing trace with hash 959559185, now seen corresponding path program 1 times [2022-11-03 02:25:41,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:41,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767175759] [2022-11-03 02:25:41,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:41,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:42,344 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-11-03 02:25:42,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:42,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767175759] [2022-11-03 02:25:42,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767175759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:42,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:42,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:42,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405241700] [2022-11-03 02:25:42,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:42,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:42,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:42,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:42,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:42,347 INFO L87 Difference]: Start difference. First operand 5862 states and 8482 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2022-11-03 02:25:50,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:51,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:51,277 INFO L93 Difference]: Finished difference Result 5962 states and 8572 transitions. [2022-11-03 02:25:51,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:25:51,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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 117 [2022-11-03 02:25:51,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:51,306 INFO L225 Difference]: With dead ends: 5962 [2022-11-03 02:25:51,307 INFO L226 Difference]: Without dead ends: 5801 [2022-11-03 02:25:51,312 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 [2022-11-03 02:25:51,313 INFO L413 NwaCegarLoop]: 3956 mSDtfsCounter, 4333 mSDsluCounter, 8967 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4335 SdHoareTripleChecker+Valid, 11942 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:51,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4335 Valid, 11942 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1483 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2022-11-03 02:25:51,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2022-11-03 02:25:52,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 5797. [2022-11-03 02:25:52,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5797 states, 3243 states have (on average 1.272895467160037) internal successors, (4128), 3435 states have internal predecessors, (4128), 2081 states have call successors, (2081), 478 states have call predecessors, (2081), 470 states have return successors, (2165), 2004 states have call predecessors, (2165), 2078 states have call successors, (2165) [2022-11-03 02:25:52,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5797 states to 5797 states and 8374 transitions. [2022-11-03 02:25:52,074 INFO L78 Accepts]: Start accepts. Automaton has 5797 states and 8374 transitions. Word has length 117 [2022-11-03 02:25:52,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:52,074 INFO L495 AbstractCegarLoop]: Abstraction has 5797 states and 8374 transitions. [2022-11-03 02:25:52,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2022-11-03 02:25:52,075 INFO L276 IsEmpty]: Start isEmpty. Operand 5797 states and 8374 transitions. [2022-11-03 02:25:52,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-03 02:25:52,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:52,080 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:52,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 02:25:52,081 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:25:52,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:52,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1408474005, now seen corresponding path program 1 times [2022-11-03 02:25:52,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:52,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619934846] [2022-11-03 02:25:52,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:52,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:53,652 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-03 02:25:53,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:53,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619934846] [2022-11-03 02:25:53,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619934846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:53,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:53,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:53,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347453524] [2022-11-03 02:25:53,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:53,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:53,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:53,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:53,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:53,656 INFO L87 Difference]: Start difference. First operand 5797 states and 8374 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:25:57,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:01,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:02,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:02,532 INFO L93 Difference]: Finished difference Result 5809 states and 8384 transitions. [2022-11-03 02:26:02,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:26:02,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 153 [2022-11-03 02:26:02,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:02,555 INFO L225 Difference]: With dead ends: 5809 [2022-11-03 02:26:02,555 INFO L226 Difference]: Without dead ends: 5807 [2022-11-03 02:26:02,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:26:02,561 INFO L413 NwaCegarLoop]: 3959 mSDtfsCounter, 4301 mSDsluCounter, 8956 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4306 SdHoareTripleChecker+Valid, 11939 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:02,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4306 Valid, 11939 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1470 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2022-11-03 02:26:02,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5807 states. [2022-11-03 02:26:03,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5807 to 5805. [2022-11-03 02:26:03,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5805 states, 3249 states have (on average 1.2717759310557095) internal successors, (4132), 3441 states have internal predecessors, (4132), 2081 states have call successors, (2081), 480 states have call predecessors, (2081), 472 states have return successors, (2165), 2004 states have call predecessors, (2165), 2078 states have call successors, (2165) [2022-11-03 02:26:03,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5805 states to 5805 states and 8378 transitions. [2022-11-03 02:26:03,402 INFO L78 Accepts]: Start accepts. Automaton has 5805 states and 8378 transitions. Word has length 153 [2022-11-03 02:26:03,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:03,402 INFO L495 AbstractCegarLoop]: Abstraction has 5805 states and 8378 transitions. [2022-11-03 02:26:03,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:26:03,403 INFO L276 IsEmpty]: Start isEmpty. Operand 5805 states and 8378 transitions. [2022-11-03 02:26:03,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-03 02:26:03,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:03,411 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:03,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 02:26:03,412 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:26:03,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:03,412 INFO L85 PathProgramCache]: Analyzing trace with hash -160856888, now seen corresponding path program 1 times [2022-11-03 02:26:03,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:03,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906601856] [2022-11-03 02:26:03,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:03,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:04,608 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-03 02:26:04,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:04,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906601856] [2022-11-03 02:26:04,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906601856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:04,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:04,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:26:04,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393509389] [2022-11-03 02:26:04,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:04,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:26:04,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:04,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:26:04,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:26:04,611 INFO L87 Difference]: Start difference. First operand 5805 states and 8378 transitions. Second operand has 8 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-03 02:26:18,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:18,272 INFO L93 Difference]: Finished difference Result 11577 states and 16779 transitions. [2022-11-03 02:26:18,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:26:18,273 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) Word has length 184 [2022-11-03 02:26:18,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:18,295 INFO L225 Difference]: With dead ends: 11577 [2022-11-03 02:26:18,295 INFO L226 Difference]: Without dead ends: 5837 [2022-11-03 02:26:18,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:26:18,329 INFO L413 NwaCegarLoop]: 3915 mSDtfsCounter, 12 mSDsluCounter, 26340 mSDsCounter, 0 mSdLazyCounter, 3594 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 27358 SdHoareTripleChecker+Invalid, 3604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:18,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 27358 Invalid, 3604 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 3594 Invalid, 0 Unknown, 0 Unchecked, 12.6s Time] [2022-11-03 02:26:18,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5837 states. [2022-11-03 02:26:19,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5837 to 5817. [2022-11-03 02:26:19,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5817 states, 3257 states have (on average 1.2711083819465765) internal successors, (4140), 3445 states have internal predecessors, (4140), 2085 states have call successors, (2085), 480 states have call predecessors, (2085), 472 states have return successors, (2169), 2008 states have call predecessors, (2169), 2082 states have call successors, (2169) [2022-11-03 02:26:19,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5817 states to 5817 states and 8394 transitions. [2022-11-03 02:26:19,098 INFO L78 Accepts]: Start accepts. Automaton has 5817 states and 8394 transitions. Word has length 184 [2022-11-03 02:26:19,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:19,099 INFO L495 AbstractCegarLoop]: Abstraction has 5817 states and 8394 transitions. [2022-11-03 02:26:19,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (33), 4 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-03 02:26:19,100 INFO L276 IsEmpty]: Start isEmpty. Operand 5817 states and 8394 transitions. [2022-11-03 02:26:19,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-03 02:26:19,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:19,109 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:19,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 02:26:19,109 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:26:19,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:19,110 INFO L85 PathProgramCache]: Analyzing trace with hash -245897942, now seen corresponding path program 1 times [2022-11-03 02:26:19,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:19,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95585862] [2022-11-03 02:26:19,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:19,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:20,222 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-03 02:26:20,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:20,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95585862] [2022-11-03 02:26:20,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95585862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:20,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:20,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:20,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22042967] [2022-11-03 02:26:20,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:20,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:20,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:20,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:20,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:20,227 INFO L87 Difference]: Start difference. First operand 5817 states and 8394 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-03 02:26:26,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:30,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:31,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:31,354 INFO L93 Difference]: Finished difference Result 5819 states and 8395 transitions. [2022-11-03 02:26:31,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:26:31,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 187 [2022-11-03 02:26:31,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:31,369 INFO L225 Difference]: With dead ends: 5819 [2022-11-03 02:26:31,369 INFO L226 Difference]: Without dead ends: 5817 [2022-11-03 02:26:31,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:26:31,372 INFO L413 NwaCegarLoop]: 3939 mSDtfsCounter, 40 mSDsluCounter, 13243 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 15735 SdHoareTripleChecker+Invalid, 1947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1944 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:31,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 15735 Invalid, 1947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1944 Invalid, 2 Unknown, 0 Unchecked, 10.3s Time] [2022-11-03 02:26:31,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5817 states. [2022-11-03 02:26:32,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5817 to 5817. [2022-11-03 02:26:32,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5817 states, 3257 states have (on average 1.2698802579060484) internal successors, (4136), 3445 states have internal predecessors, (4136), 2085 states have call successors, (2085), 480 states have call predecessors, (2085), 472 states have return successors, (2169), 2008 states have call predecessors, (2169), 2082 states have call successors, (2169) [2022-11-03 02:26:32,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5817 states to 5817 states and 8390 transitions. [2022-11-03 02:26:32,089 INFO L78 Accepts]: Start accepts. Automaton has 5817 states and 8390 transitions. Word has length 187 [2022-11-03 02:26:32,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:32,090 INFO L495 AbstractCegarLoop]: Abstraction has 5817 states and 8390 transitions. [2022-11-03 02:26:32,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-03 02:26:32,090 INFO L276 IsEmpty]: Start isEmpty. Operand 5817 states and 8390 transitions. [2022-11-03 02:26:32,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-11-03 02:26:32,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:32,104 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:32,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 02:26:32,104 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:26:32,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:32,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1934499232, now seen corresponding path program 1 times [2022-11-03 02:26:32,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:32,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695509070] [2022-11-03 02:26:32,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:32,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:32,734 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-11-03 02:26:32,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:32,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695509070] [2022-11-03 02:26:32,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695509070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:32,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:32,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:26:32,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415741728] [2022-11-03 02:26:32,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:32,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:26:32,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:32,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:26:32,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:32,737 INFO L87 Difference]: Start difference. First operand 5817 states and 8390 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-03 02:26:38,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:40,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:41,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:41,369 INFO L93 Difference]: Finished difference Result 11589 states and 16809 transitions. [2022-11-03 02:26:41,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:26:41,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 260 [2022-11-03 02:26:41,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:41,388 INFO L225 Difference]: With dead ends: 11589 [2022-11-03 02:26:41,388 INFO L226 Difference]: Without dead ends: 5837 [2022-11-03 02:26:41,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:41,422 INFO L413 NwaCegarLoop]: 3940 mSDtfsCounter, 5 mSDsluCounter, 4414 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 7873 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:41,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 7873 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 968 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2022-11-03 02:26:41,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5837 states. [2022-11-03 02:26:42,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5837 to 5819. [2022-11-03 02:26:42,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5819 states, 3259 states have (on average 1.269714636391531) internal successors, (4138), 3447 states have internal predecessors, (4138), 2085 states have call successors, (2085), 480 states have call predecessors, (2085), 472 states have return successors, (2169), 2008 states have call predecessors, (2169), 2082 states have call successors, (2169) [2022-11-03 02:26:42,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5819 states to 5819 states and 8392 transitions. [2022-11-03 02:26:42,142 INFO L78 Accepts]: Start accepts. Automaton has 5819 states and 8392 transitions. Word has length 260 [2022-11-03 02:26:42,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:42,143 INFO L495 AbstractCegarLoop]: Abstraction has 5819 states and 8392 transitions. [2022-11-03 02:26:42,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-03 02:26:42,144 INFO L276 IsEmpty]: Start isEmpty. Operand 5819 states and 8392 transitions. [2022-11-03 02:26:42,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-11-03 02:26:42,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:42,157 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:42,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 02:26:42,158 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:26:42,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:42,158 INFO L85 PathProgramCache]: Analyzing trace with hash -454117244, now seen corresponding path program 1 times [2022-11-03 02:26:42,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:42,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559790470] [2022-11-03 02:26:42,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:42,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:43,349 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2022-11-03 02:26:43,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:43,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559790470] [2022-11-03 02:26:43,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559790470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:43,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:43,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:43,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072325765] [2022-11-03 02:26:43,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:43,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:43,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:43,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:43,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:43,352 INFO L87 Difference]: Start difference. First operand 5819 states and 8392 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (62), 3 states have call predecessors, (62), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-03 02:26:48,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:53,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:54,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:54,127 INFO L93 Difference]: Finished difference Result 5876 states and 8444 transitions. [2022-11-03 02:26:54,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:26:54,127 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (62), 3 states have call predecessors, (62), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 269 [2022-11-03 02:26:54,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:54,148 INFO L225 Difference]: With dead ends: 5876 [2022-11-03 02:26:54,148 INFO L226 Difference]: Without dead ends: 5874 [2022-11-03 02:26:54,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:26:54,152 INFO L413 NwaCegarLoop]: 3950 mSDtfsCounter, 488 mSDsluCounter, 12835 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 15344 SdHoareTripleChecker+Invalid, 1945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:54,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 15344 Invalid, 1945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1943 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2022-11-03 02:26:54,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5874 states. [2022-11-03 02:26:54,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5874 to 5874. [2022-11-03 02:26:54,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5874 states, 3289 states have (on average 1.2678625722103982) internal successors, (4170), 3477 states have internal predecessors, (4170), 2094 states have call successors, (2094), 496 states have call predecessors, (2094), 488 states have return successors, (2178), 2017 states have call predecessors, (2178), 2091 states have call successors, (2178) [2022-11-03 02:26:54,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5874 states to 5874 states and 8442 transitions. [2022-11-03 02:26:54,904 INFO L78 Accepts]: Start accepts. Automaton has 5874 states and 8442 transitions. Word has length 269 [2022-11-03 02:26:54,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:54,904 INFO L495 AbstractCegarLoop]: Abstraction has 5874 states and 8442 transitions. [2022-11-03 02:26:54,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (62), 3 states have call predecessors, (62), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-03 02:26:54,905 INFO L276 IsEmpty]: Start isEmpty. Operand 5874 states and 8442 transitions. [2022-11-03 02:26:54,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2022-11-03 02:26:54,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:54,927 INFO L195 NwaCegarLoop]: trace histogram [18, 13, 11, 11, 10, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:54,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-03 02:26:54,928 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:26:54,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:54,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1589834747, now seen corresponding path program 1 times [2022-11-03 02:26:54,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:54,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838954167] [2022-11-03 02:26:54,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:54,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:55,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:55,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838954167] [2022-11-03 02:26:55,427 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 02:26:55,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551754575] [2022-11-03 02:26:55,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:55,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:55,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:26:55,433 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:26:55,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:26:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:58,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 9250 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:26:58,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:59,777 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2022-11-03 02:26:59,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:59,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551754575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:59,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:59,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:26:59,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708626912] [2022-11-03 02:26:59,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:59,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:26:59,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:59,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:26:59,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:59,781 INFO L87 Difference]: Start difference. First operand 5874 states and 8442 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 2 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2022-11-03 02:27:04,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:07,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:07,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:07,588 INFO L93 Difference]: Finished difference Result 11683 states and 16785 transitions. [2022-11-03 02:27:07,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:27:07,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 2 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 504 [2022-11-03 02:27:07,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:07,617 INFO L225 Difference]: With dead ends: 11683 [2022-11-03 02:27:07,617 INFO L226 Difference]: Without dead ends: 5874 [2022-11-03 02:27:07,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:07,638 INFO L413 NwaCegarLoop]: 3980 mSDtfsCounter, 4068 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4072 SdHoareTripleChecker+Valid, 4200 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:07,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4072 Valid, 4200 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 505 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2022-11-03 02:27:07,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5874 states. [2022-11-03 02:27:08,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5874 to 5874. [2022-11-03 02:27:08,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5874 states, 3289 states have (on average 1.267254484645789) internal successors, (4168), 3477 states have internal predecessors, (4168), 2094 states have call successors, (2094), 496 states have call predecessors, (2094), 488 states have return successors, (2178), 2017 states have call predecessors, (2178), 2091 states have call successors, (2178) [2022-11-03 02:27:08,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5874 states to 5874 states and 8440 transitions. [2022-11-03 02:27:08,468 INFO L78 Accepts]: Start accepts. Automaton has 5874 states and 8440 transitions. Word has length 504 [2022-11-03 02:27:08,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:08,469 INFO L495 AbstractCegarLoop]: Abstraction has 5874 states and 8440 transitions. [2022-11-03 02:27:08,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 2 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2022-11-03 02:27:08,470 INFO L276 IsEmpty]: Start isEmpty. Operand 5874 states and 8440 transitions. [2022-11-03 02:27:08,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2022-11-03 02:27:08,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:08,483 INFO L195 NwaCegarLoop]: trace histogram [18, 13, 11, 11, 10, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:08,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:08,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:08,709 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:27:08,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:08,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1647072275, now seen corresponding path program 1 times [2022-11-03 02:27:08,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:08,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035467143] [2022-11-03 02:27:08,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:08,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:09,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:09,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035467143] [2022-11-03 02:27:09,149 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 02:27:09,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238788720] [2022-11-03 02:27:09,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:09,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:09,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:27:09,151 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:27:09,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:27:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:12,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 9268 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:27:12,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:12,275 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2022-11-03 02:27:12,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:12,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238788720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:12,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:12,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:27:12,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606940455] [2022-11-03 02:27:12,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:12,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:27:12,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:12,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:27:12,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:27:12,279 INFO L87 Difference]: Start difference. First operand 5874 states and 8440 transitions. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 2 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2022-11-03 02:27:18,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:18,913 INFO L93 Difference]: Finished difference Result 12607 states and 18345 transitions. [2022-11-03 02:27:18,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:27:18,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 2 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) Word has length 505 [2022-11-03 02:27:18,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:18,942 INFO L225 Difference]: With dead ends: 12607 [2022-11-03 02:27:18,942 INFO L226 Difference]: Without dead ends: 6798 [2022-11-03 02:27:18,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:27:18,963 INFO L413 NwaCegarLoop]: 4389 mSDtfsCounter, 591 mSDsluCounter, 9279 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 12660 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 1623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:18,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 12660 Invalid, 1813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 1623 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-03 02:27:18,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6798 states. [2022-11-03 02:27:20,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6798 to 5878. [2022-11-03 02:27:20,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5878 states, 3293 states have (on average 1.2669298511995142) internal successors, (4172), 3481 states have internal predecessors, (4172), 2094 states have call successors, (2094), 496 states have call predecessors, (2094), 488 states have return successors, (2178), 2017 states have call predecessors, (2178), 2091 states have call successors, (2178) [2022-11-03 02:27:20,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5878 states to 5878 states and 8444 transitions. [2022-11-03 02:27:20,069 INFO L78 Accepts]: Start accepts. Automaton has 5878 states and 8444 transitions. Word has length 505 [2022-11-03 02:27:20,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:20,070 INFO L495 AbstractCegarLoop]: Abstraction has 5878 states and 8444 transitions. [2022-11-03 02:27:20,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 2 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2022-11-03 02:27:20,071 INFO L276 IsEmpty]: Start isEmpty. Operand 5878 states and 8444 transitions. [2022-11-03 02:27:20,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2022-11-03 02:27:20,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:20,086 INFO L195 NwaCegarLoop]: trace histogram [18, 13, 11, 11, 10, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:20,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:20,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:20,287 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:27:20,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:20,288 INFO L85 PathProgramCache]: Analyzing trace with hash 432326202, now seen corresponding path program 1 times [2022-11-03 02:27:20,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:20,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530318186] [2022-11-03 02:27:20,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:20,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:20,578 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:27:20,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1455514331] [2022-11-03 02:27:20,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:20,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:20,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:27:20,581 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:27:20,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:27:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:23,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 9420 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:27:23,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:25,209 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 875 trivial. 0 not checked. [2022-11-03 02:27:25,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:25,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:25,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530318186] [2022-11-03 02:27:25,209 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:27:25,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455514331] [2022-11-03 02:27:25,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455514331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:25,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:25,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:27:25,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352879767] [2022-11-03 02:27:25,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:25,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:27:25,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:25,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:27:25,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:27:25,213 INFO L87 Difference]: Start difference. First operand 5878 states and 8444 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 3 states have internal predecessors, (182), 1 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2022-11-03 02:27:33,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:34,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:34,667 INFO L93 Difference]: Finished difference Result 5884 states and 8449 transitions. [2022-11-03 02:27:34,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:27:34,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 3 states have internal predecessors, (182), 1 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 514 [2022-11-03 02:27:34,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:34,695 INFO L225 Difference]: With dead ends: 5884 [2022-11-03 02:27:34,695 INFO L226 Difference]: Without dead ends: 5882 [2022-11-03 02:27:34,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:27:34,701 INFO L413 NwaCegarLoop]: 3944 mSDtfsCounter, 3980 mSDsluCounter, 8954 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3983 SdHoareTripleChecker+Valid, 11917 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:34,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3983 Valid, 11917 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1475 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2022-11-03 02:27:34,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5882 states. [2022-11-03 02:27:35,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5882 to 5882. [2022-11-03 02:27:35,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5882 states, 3296 states have (on average 1.266383495145631) internal successors, (4174), 3484 states have internal predecessors, (4174), 2094 states have call successors, (2094), 497 states have call predecessors, (2094), 489 states have return successors, (2178), 2017 states have call predecessors, (2178), 2091 states have call successors, (2178) [2022-11-03 02:27:35,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5882 states to 5882 states and 8446 transitions. [2022-11-03 02:27:35,501 INFO L78 Accepts]: Start accepts. Automaton has 5882 states and 8446 transitions. Word has length 514 [2022-11-03 02:27:35,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:35,502 INFO L495 AbstractCegarLoop]: Abstraction has 5882 states and 8446 transitions. [2022-11-03 02:27:35,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 3 states have internal predecessors, (182), 1 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2022-11-03 02:27:35,503 INFO L276 IsEmpty]: Start isEmpty. Operand 5882 states and 8446 transitions. [2022-11-03 02:27:35,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2022-11-03 02:27:35,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:35,523 INFO L195 NwaCegarLoop]: trace histogram [18, 13, 12, 12, 10, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:35,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:35,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:35,749 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:27:35,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:35,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1481922084, now seen corresponding path program 1 times [2022-11-03 02:27:35,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:35,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429774508] [2022-11-03 02:27:35,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:35,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:36,070 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:27:36,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2029407474] [2022-11-03 02:27:36,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:36,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:36,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:27:36,073 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:27:36,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:27:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:39,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 9500 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:27:39,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:39,283 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 908 trivial. 0 not checked. [2022-11-03 02:27:39,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:39,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:39,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429774508] [2022-11-03 02:27:39,283 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:27:39,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029407474] [2022-11-03 02:27:39,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029407474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:39,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:39,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:27:39,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628932050] [2022-11-03 02:27:39,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:39,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:27:39,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:39,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:27:39,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:27:39,286 INFO L87 Difference]: Start difference. First operand 5882 states and 8446 transitions. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 4 states have internal predecessors, (192), 2 states have call successors, (101), 3 states have call predecessors, (101), 2 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2022-11-03 02:27:44,550 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 [] [2022-11-03 02:27:48,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:48,257 INFO L93 Difference]: Finished difference Result 5882 states and 8446 transitions. [2022-11-03 02:27:48,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:27:48,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 4 states have internal predecessors, (192), 2 states have call successors, (101), 3 states have call predecessors, (101), 2 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) Word has length 532 [2022-11-03 02:27:48,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:48,282 INFO L225 Difference]: With dead ends: 5882 [2022-11-03 02:27:48,282 INFO L226 Difference]: Without dead ends: 5880 [2022-11-03 02:27:48,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:27:48,287 INFO L413 NwaCegarLoop]: 3959 mSDtfsCounter, 69 mSDsluCounter, 13283 mSDsCounter, 0 mSdLazyCounter, 1976 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 15776 SdHoareTripleChecker+Invalid, 1976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:48,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 15776 Invalid, 1976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-03 02:27:48,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5880 states. [2022-11-03 02:27:49,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5880 to 5880. [2022-11-03 02:27:49,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5880 states, 3295 states have (on average 1.2658573596358118) internal successors, (4171), 3482 states have internal predecessors, (4171), 2094 states have call successors, (2094), 497 states have call predecessors, (2094), 489 states have return successors, (2178), 2017 states have call predecessors, (2178), 2091 states have call successors, (2178) [2022-11-03 02:27:49,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5880 states to 5880 states and 8443 transitions. [2022-11-03 02:27:49,069 INFO L78 Accepts]: Start accepts. Automaton has 5880 states and 8443 transitions. Word has length 532 [2022-11-03 02:27:49,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:49,074 INFO L495 AbstractCegarLoop]: Abstraction has 5880 states and 8443 transitions. [2022-11-03 02:27:49,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 4 states have internal predecessors, (192), 2 states have call successors, (101), 3 states have call predecessors, (101), 2 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2022-11-03 02:27:49,074 INFO L276 IsEmpty]: Start isEmpty. Operand 5880 states and 8443 transitions. [2022-11-03 02:27:49,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1237 [2022-11-03 02:27:49,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:49,117 INFO L195 NwaCegarLoop]: trace histogram [45, 37, 34, 26, 26, 26, 26, 13, 13, 11, 8, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:49,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-03 02:27:49,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-03 02:27:49,318 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:27:49,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:49,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1466999511, now seen corresponding path program 1 times [2022-11-03 02:27:49,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:49,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960066333] [2022-11-03 02:27:49,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:49,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:49,795 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:27:49,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263910275] [2022-11-03 02:27:49,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:49,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:49,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:27:49,798 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:27:49,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:27:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:53,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 14926 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:27:53,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6474 backedges. 1966 proven. 0 refuted. 0 times theorem prover too weak. 4508 trivial. 0 not checked. [2022-11-03 02:27:54,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:54,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:54,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960066333] [2022-11-03 02:27:54,023 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:27:54,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263910275] [2022-11-03 02:27:54,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263910275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:54,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:54,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:27:54,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196324447] [2022-11-03 02:27:54,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:54,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:27:54,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:54,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:27:54,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:54,028 INFO L87 Difference]: Start difference. First operand 5880 states and 8443 transitions. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 2 states have call successors, (213), 2 states have call predecessors, (213), 2 states have return successors, (208), 2 states have call predecessors, (208), 2 states have call successors, (208) [2022-11-03 02:27:58,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:01,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:02,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:02,672 INFO L93 Difference]: Finished difference Result 11728 states and 17056 transitions. [2022-11-03 02:28:02,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:28:02,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 2 states have call successors, (213), 2 states have call predecessors, (213), 2 states have return successors, (208), 2 states have call predecessors, (208), 2 states have call successors, (208) Word has length 1236 [2022-11-03 02:28:02,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:28:02,696 INFO L225 Difference]: With dead ends: 11728 [2022-11-03 02:28:02,697 INFO L226 Difference]: Without dead ends: 5913 [2022-11-03 02:28:02,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1235 GetRequests, 1234 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:28:02,732 INFO L413 NwaCegarLoop]: 3935 mSDtfsCounter, 8 mSDsluCounter, 4410 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 7864 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:28:02,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 7864 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 968 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2022-11-03 02:28:02,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5913 states. [2022-11-03 02:28:03,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5913 to 5883. [2022-11-03 02:28:03,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5883 states, 3298 states have (on average 1.2656155245603395) internal successors, (4174), 3485 states have internal predecessors, (4174), 2094 states have call successors, (2094), 497 states have call predecessors, (2094), 489 states have return successors, (2178), 2017 states have call predecessors, (2178), 2091 states have call successors, (2178) [2022-11-03 02:28:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5883 states to 5883 states and 8446 transitions. [2022-11-03 02:28:03,707 INFO L78 Accepts]: Start accepts. Automaton has 5883 states and 8446 transitions. Word has length 1236 [2022-11-03 02:28:03,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:28:03,708 INFO L495 AbstractCegarLoop]: Abstraction has 5883 states and 8446 transitions. [2022-11-03 02:28:03,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 2 states have call successors, (213), 2 states have call predecessors, (213), 2 states have return successors, (208), 2 states have call predecessors, (208), 2 states have call successors, (208) [2022-11-03 02:28:03,709 INFO L276 IsEmpty]: Start isEmpty. Operand 5883 states and 8446 transitions. [2022-11-03 02:28:03,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1300 [2022-11-03 02:28:03,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:28:03,742 INFO L195 NwaCegarLoop]: trace histogram [45, 37, 34, 26, 26, 26, 26, 14, 14, 14, 8, 8, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:28:03,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:28:03,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-03 02:28:03,957 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:28:03,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:28:03,958 INFO L85 PathProgramCache]: Analyzing trace with hash -379914794, now seen corresponding path program 1 times [2022-11-03 02:28:03,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:28:03,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663588124] [2022-11-03 02:28:03,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:03,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:28:04,354 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:28:04,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685325444] [2022-11-03 02:28:04,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:04,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:28:04,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:28:04,356 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:28:04,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:28:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:08,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 15341 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:28:08,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:28:08,526 INFO L134 CoverageAnalysis]: Checked inductivity of 6647 backedges. 2268 proven. 0 refuted. 0 times theorem prover too weak. 4379 trivial. 0 not checked. [2022-11-03 02:28:08,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:28:08,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:28:08,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663588124] [2022-11-03 02:28:08,526 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:28:08,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685325444] [2022-11-03 02:28:08,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685325444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:28:08,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:28:08,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:28:08,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610558167] [2022-11-03 02:28:08,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:28:08,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:28:08,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:28:08,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:28:08,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:28:08,530 INFO L87 Difference]: Start difference. First operand 5883 states and 8446 transitions. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 2 states have call successors, (224), 2 states have call predecessors, (224), 2 states have return successors, (219), 2 states have call predecessors, (219), 2 states have call successors, (219) [2022-11-03 02:28:15,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:16,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:16,096 INFO L93 Difference]: Finished difference Result 11710 states and 17137 transitions. [2022-11-03 02:28:16,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:28:16,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 2 states have call successors, (224), 2 states have call predecessors, (224), 2 states have return successors, (219), 2 states have call predecessors, (219), 2 states have call successors, (219) Word has length 1299 [2022-11-03 02:28:16,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:28:16,125 INFO L225 Difference]: With dead ends: 11710 [2022-11-03 02:28:16,125 INFO L226 Difference]: Without dead ends: 5892 [2022-11-03 02:28:16,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1298 GetRequests, 1297 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:28:16,150 INFO L413 NwaCegarLoop]: 3934 mSDtfsCounter, 7 mSDsluCounter, 4411 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 7863 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:28:16,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 7863 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 970 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-03 02:28:16,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5892 states. [2022-11-03 02:28:16,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5892 to 5884. [2022-11-03 02:28:16,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 3299 states have (on average 1.2655350106092755) internal successors, (4175), 3486 states have internal predecessors, (4175), 2094 states have call successors, (2094), 497 states have call predecessors, (2094), 489 states have return successors, (2178), 2017 states have call predecessors, (2178), 2091 states have call successors, (2178) [2022-11-03 02:28:16,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 8447 transitions. [2022-11-03 02:28:16,904 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 8447 transitions. Word has length 1299 [2022-11-03 02:28:16,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:28:16,905 INFO L495 AbstractCegarLoop]: Abstraction has 5884 states and 8447 transitions. [2022-11-03 02:28:16,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 2 states have call successors, (224), 2 states have call predecessors, (224), 2 states have return successors, (219), 2 states have call predecessors, (219), 2 states have call successors, (219) [2022-11-03 02:28:16,906 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 8447 transitions. [2022-11-03 02:28:16,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1336 [2022-11-03 02:28:16,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:28:16,932 INFO L195 NwaCegarLoop]: trace histogram [45, 37, 34, 26, 26, 26, 26, 14, 14, 14, 8, 8, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:28:16,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:28:17,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:28:17,132 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:28:17,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:28:17,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1613250958, now seen corresponding path program 1 times [2022-11-03 02:28:17,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:28:17,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251094984] [2022-11-03 02:28:17,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:17,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:28:17,437 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:28:17,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [587847253] [2022-11-03 02:28:17,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:17,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:28:17,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:28:17,441 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:28:17,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:28:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:21,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 15581 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:28:21,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:28:21,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2766 proven. 0 refuted. 0 times theorem prover too weak. 3999 trivial. 0 not checked. [2022-11-03 02:28:21,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:28:21,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:28:21,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251094984] [2022-11-03 02:28:21,796 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:28:21,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587847253] [2022-11-03 02:28:21,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587847253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:28:21,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:28:21,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:28:21,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361390023] [2022-11-03 02:28:21,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:28:21,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:28:21,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:28:21,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:28:21,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:28:21,800 INFO L87 Difference]: Start difference. First operand 5884 states and 8447 transitions. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 2 states have call successors, (222), 2 states have call predecessors, (222), 2 states have return successors, (217), 2 states have call predecessors, (217), 2 states have call successors, (217) [2022-11-03 02:28:26,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:28,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:28,077 INFO L93 Difference]: Finished difference Result 11706 states and 16936 transitions. [2022-11-03 02:28:28,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:28:28,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 2 states have call successors, (222), 2 states have call predecessors, (222), 2 states have return successors, (217), 2 states have call predecessors, (217), 2 states have call successors, (217) Word has length 1335 [2022-11-03 02:28:28,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:28:28,105 INFO L225 Difference]: With dead ends: 11706 [2022-11-03 02:28:28,105 INFO L226 Difference]: Without dead ends: 5887 [2022-11-03 02:28:28,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1334 GetRequests, 1333 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:28:28,125 INFO L413 NwaCegarLoop]: 3933 mSDtfsCounter, 1 mSDsluCounter, 4411 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7861 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:28:28,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7861 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 972 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-11-03 02:28:28,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5887 states. [2022-11-03 02:28:28,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5887 to 5885. [2022-11-03 02:28:28,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5885 states, 3300 states have (on average 1.2654545454545454) internal successors, (4176), 3487 states have internal predecessors, (4176), 2094 states have call successors, (2094), 497 states have call predecessors, (2094), 489 states have return successors, (2178), 2017 states have call predecessors, (2178), 2091 states have call successors, (2178) [2022-11-03 02:28:29,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5885 states to 5885 states and 8448 transitions. [2022-11-03 02:28:29,004 INFO L78 Accepts]: Start accepts. Automaton has 5885 states and 8448 transitions. Word has length 1335 [2022-11-03 02:28:29,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:28:29,005 INFO L495 AbstractCegarLoop]: Abstraction has 5885 states and 8448 transitions. [2022-11-03 02:28:29,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 2 states have call successors, (222), 2 states have call predecessors, (222), 2 states have return successors, (217), 2 states have call predecessors, (217), 2 states have call successors, (217) [2022-11-03 02:28:29,006 INFO L276 IsEmpty]: Start isEmpty. Operand 5885 states and 8448 transitions. [2022-11-03 02:28:29,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1345 [2022-11-03 02:28:29,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:28:29,036 INFO L195 NwaCegarLoop]: trace histogram [45, 37, 34, 26, 26, 26, 26, 14, 14, 14, 9, 8, 8, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:28:29,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:28:29,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-03 02:28:29,242 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:28:29,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:28:29,243 INFO L85 PathProgramCache]: Analyzing trace with hash 465731816, now seen corresponding path program 1 times [2022-11-03 02:28:29,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:28:29,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496280089] [2022-11-03 02:28:29,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:29,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:28:29,592 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:28:29,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125996617] [2022-11-03 02:28:29,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:29,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:28:29,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:28:29,593 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:28:29,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 02:28:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:33,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 15638 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:28:33,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:28:33,900 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 1925 proven. 0 refuted. 0 times theorem prover too weak. 4881 trivial. 0 not checked. [2022-11-03 02:28:33,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:28:33,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:28:33,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496280089] [2022-11-03 02:28:33,901 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:28:33,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125996617] [2022-11-03 02:28:33,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125996617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:28:33,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:28:33,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:28:33,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730197022] [2022-11-03 02:28:33,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:28:33,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:28:33,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:28:33,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:28:33,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:28:33,906 INFO L87 Difference]: Start difference. First operand 5885 states and 8448 transitions. Second operand has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 2 states have call successors, (221), 2 states have call predecessors, (221), 2 states have return successors, (218), 2 states have call predecessors, (218), 2 states have call successors, (218) [2022-11-03 02:28:38,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:43,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:43,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:43,788 INFO L93 Difference]: Finished difference Result 11717 states and 16917 transitions. [2022-11-03 02:28:43,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:28:43,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 2 states have call successors, (221), 2 states have call predecessors, (221), 2 states have return successors, (218), 2 states have call predecessors, (218), 2 states have call successors, (218) Word has length 1344 [2022-11-03 02:28:43,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:28:43,816 INFO L225 Difference]: With dead ends: 11717 [2022-11-03 02:28:43,816 INFO L226 Difference]: Without dead ends: 5897 [2022-11-03 02:28:43,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1344 GetRequests, 1341 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:28:43,841 INFO L413 NwaCegarLoop]: 3932 mSDtfsCounter, 7 mSDsluCounter, 8820 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 11788 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:28:43,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 11788 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1460 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2022-11-03 02:28:43,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5897 states. [2022-11-03 02:28:44,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5897 to 5897. [2022-11-03 02:28:44,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5897 states, 3308 states have (on average 1.264812575574365) internal successors, (4184), 3497 states have internal predecessors, (4184), 2096 states have call successors, (2096), 497 states have call predecessors, (2096), 491 states have return successors, (2186), 2019 states have call predecessors, (2186), 2093 states have call successors, (2186) [2022-11-03 02:28:44,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5897 states to 5897 states and 8466 transitions. [2022-11-03 02:28:44,383 INFO L78 Accepts]: Start accepts. Automaton has 5897 states and 8466 transitions. Word has length 1344 [2022-11-03 02:28:44,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:28:44,384 INFO L495 AbstractCegarLoop]: Abstraction has 5897 states and 8466 transitions. [2022-11-03 02:28:44,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 2 states have call successors, (221), 2 states have call predecessors, (221), 2 states have return successors, (218), 2 states have call predecessors, (218), 2 states have call successors, (218) [2022-11-03 02:28:44,384 INFO L276 IsEmpty]: Start isEmpty. Operand 5897 states and 8466 transitions. [2022-11-03 02:28:44,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1387 [2022-11-03 02:28:44,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:28:44,416 INFO L195 NwaCegarLoop]: trace histogram [45, 37, 34, 26, 26, 26, 26, 14, 14, 14, 9, 8, 8, 7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:28:44,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:28:44,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-03 02:28:44,618 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:28:44,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:28:44,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1222837247, now seen corresponding path program 1 times [2022-11-03 02:28:44,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:28:44,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143063699] [2022-11-03 02:28:44,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:44,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:28:44,983 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:28:44,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [302481654] [2022-11-03 02:28:44,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:44,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:28:44,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:28:44,985 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:28:44,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edf3191-8162-42b3-91c6-ab751f603938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 02:28:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:49,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 16055 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:28:49,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:28:49,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6857 backedges. 2770 proven. 1 refuted. 0 times theorem prover too weak. 4086 trivial. 0 not checked. [2022-11-03 02:28:49,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:28:53,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6857 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-11-03 02:28:53,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:28:53,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143063699] [2022-11-03 02:28:53,085 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:28:53,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302481654] [2022-11-03 02:28:53,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302481654] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:28:53,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1641452198] [2022-11-03 02:28:53,179 INFO L159 IcfgInterpreter]: Started Sifa with 681 locations of interest [2022-11-03 02:28:53,182 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:28:53,190 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:28:53,195 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:28:53,197 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs