./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.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_c813f7fb-b136-4fdf-851f-e0182de6a92e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c813f7fb-b136-4fdf-851f-e0182de6a92e/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_c813f7fb-b136-4fdf-851f-e0182de6a92e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c813f7fb-b136-4fdf-851f-e0182de6a92e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c813f7fb-b136-4fdf-851f-e0182de6a92e/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_c813f7fb-b136-4fdf-851f-e0182de6a92e/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 fbb6aba39a63540626ae26255eab93a5f2c0864f87ba11cb320579066e7aefd2 --- 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 02:07:12,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:07:12,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:07:12,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:07:12,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:07:12,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:07:12,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:07:12,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:07:12,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:07:12,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:07:12,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:07:12,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:07:12,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:07:12,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:07:12,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:07:12,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:07:12,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:07:12,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:07:12,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:07:12,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:07:12,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:07:12,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:07:12,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:07:12,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:07:12,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:07:12,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:07:12,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:07:12,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:07:12,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:07:12,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:07:12,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:07:12,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:07:12,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:07:12,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:07:12,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:07:12,627 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:07:12,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:07:12,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:07:12,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:07:12,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:07:12,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:07:12,631 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c813f7fb-b136-4fdf-851f-e0182de6a92e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:07:12,652 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:07:12,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:07:12,653 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:07:12,653 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:07:12,654 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:07:12,654 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:07:12,654 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:07:12,655 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:07:12,655 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:07:12,655 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:07:12,656 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:07:12,656 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:07:12,656 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:07:12,656 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:07:12,657 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:07:12,657 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:07:12,657 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:07:12,658 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:07:12,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:07:12,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:07:12,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:07:12,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:07:12,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:07:12,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:07:12,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:07:12,660 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:07:12,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:07:12,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:07:12,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:07:12,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:07:12,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:07:12,662 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:07:12,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:07:12,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:07:12,663 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:07:12,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:07:12,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:07:12,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:07:12,664 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_c813f7fb-b136-4fdf-851f-e0182de6a92e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c813f7fb-b136-4fdf-851f-e0182de6a92e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbb6aba39a63540626ae26255eab93a5f2c0864f87ba11cb320579066e7aefd2 [2022-11-03 02:07:12,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:07:12,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:07:12,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:07:12,983 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:07:12,983 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:07:12,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c813f7fb-b136-4fdf-851f-e0182de6a92e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i [2022-11-03 02:07:13,059 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c813f7fb-b136-4fdf-851f-e0182de6a92e/bin/utaipan-7li7fVZpFI/data/a37d98d2f/3357e262d856466c94f7ae3102a430b0/FLAG0562ec0cb [2022-11-03 02:07:13,848 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:07:13,849 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c813f7fb-b136-4fdf-851f-e0182de6a92e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i [2022-11-03 02:07:13,910 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c813f7fb-b136-4fdf-851f-e0182de6a92e/bin/utaipan-7li7fVZpFI/data/a37d98d2f/3357e262d856466c94f7ae3102a430b0/FLAG0562ec0cb [2022-11-03 02:07:14,409 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c813f7fb-b136-4fdf-851f-e0182de6a92e/bin/utaipan-7li7fVZpFI/data/a37d98d2f/3357e262d856466c94f7ae3102a430b0 [2022-11-03 02:07:14,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:07:14,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:07:14,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:07:14,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:07:14,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:07:14,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:07:14" (1/1) ... [2022-11-03 02:07:14,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1541c05d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:14, skipping insertion in model container [2022-11-03 02:07:14,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:07:14" (1/1) ... [2022-11-03 02:07:14,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:07:14,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:07:17,138 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_c813f7fb-b136-4fdf-851f-e0182de6a92e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305216,305229] [2022-11-03 02:07:17,142 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c813f7fb-b136-4fdf-851f-e0182de6a92e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305385,305398] [2022-11-03 02:07:17,143 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_c813f7fb-b136-4fdf-851f-e0182de6a92e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305552,305565] [2022-11-03 02:07:17,143 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_c813f7fb-b136-4fdf-851f-e0182de6a92e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305720,305733] [2022-11-03 02:07:17,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:07:17,195 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:07:17,557 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_c813f7fb-b136-4fdf-851f-e0182de6a92e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305216,305229] [2022-11-03 02:07:17,558 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_c813f7fb-b136-4fdf-851f-e0182de6a92e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305385,305398] [2022-11-03 02:07:17,558 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_c813f7fb-b136-4fdf-851f-e0182de6a92e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305552,305565] [2022-11-03 02:07:17,559 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_c813f7fb-b136-4fdf-851f-e0182de6a92e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305720,305733] [2022-11-03 02:07:17,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:07:17,724 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:07:17,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:17 WrapperNode [2022-11-03 02:07:17,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:07:17,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:07:17,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:07:17,726 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:07:17,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:17" (1/1) ... [2022-11-03 02:07:17,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:17" (1/1) ... [2022-11-03 02:07:18,083 INFO L138 Inliner]: procedures = 411, calls = 1991, calls flagged for inlining = 210, calls inlined = 187, statements flattened = 4406 [2022-11-03 02:07:18,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:07:18,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:07:18,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:07:18,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:07:18,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:17" (1/1) ... [2022-11-03 02:07:18,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:17" (1/1) ... [2022-11-03 02:07:18,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:17" (1/1) ... [2022-11-03 02:07:18,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:17" (1/1) ... [2022-11-03 02:07:18,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:17" (1/1) ... [2022-11-03 02:07:18,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:17" (1/1) ... [2022-11-03 02:07:18,306 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:17" (1/1) ... [2022-11-03 02:07:18,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:17" (1/1) ... [2022-11-03 02:07:18,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:07:18,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:07:18,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:07:18,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:07:18,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:17" (1/1) ... [2022-11-03 02:07:18,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:07:18,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c813f7fb-b136-4fdf-851f-e0182de6a92e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:07:18,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c813f7fb-b136-4fdf-851f-e0182de6a92e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:07:18,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c813f7fb-b136-4fdf-851f-e0182de6a92e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:07:18,419 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_probe [2022-11-03 02:07:18,419 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_probe [2022-11-03 02:07:18,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:07:18,420 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:07:18,420 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:07:18,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:07:18,420 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 02:07:18,420 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 02:07:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:07:18,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:07:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 02:07:18,421 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 02:07:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2022-11-03 02:07:18,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2022-11-03 02:07:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure __dnet_set_hwaddr [2022-11-03 02:07:18,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __dnet_set_hwaddr [2022-11-03 02:07:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:07:18,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:07:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 02:07:18,422 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 02:07:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-03 02:07:18,422 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-03 02:07:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 02:07:18,423 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 02:07:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:07:18,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:07:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:07:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 02:07:18,424 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 02:07:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:07:18,424 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:07:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:07:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-03 02:07:18,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-03 02:07:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:07:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:07:18,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:07:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:07:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 02:07:18,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 02:07:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_reset_hw [2022-11-03 02:07:18,426 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_reset_hw [2022-11-03 02:07:18,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:07:18,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:07:18,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:07:18,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 02:07:18,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 02:07:18,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 02:07:18,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 02:07:18,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-03 02:07:18,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-03 02:07:18,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:07:18,430 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-03 02:07:18,430 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-03 02:07:18,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:07:18,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:07:18,430 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:07:18,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:07:18,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:07:18,431 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:07:18,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:07:18,431 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:07:18,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:07:18,432 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-03 02:07:18,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-03 02:07:18,433 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:07:18,433 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:07:18,433 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 02:07:18,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 02:07:18,433 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-03 02:07:18,433 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-03 02:07:18,433 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-03 02:07:18,434 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-03 02:07:18,434 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 02:07:18,434 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 02:07:18,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:07:18,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:07:18,435 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 02:07:18,435 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 02:07:18,435 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2022-11-03 02:07:18,435 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2022-11-03 02:07:18,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:07:18,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:07:18,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:07:18,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:07:18,437 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2022-11-03 02:07:18,438 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2022-11-03 02:07:18,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:07:18,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:07:18,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_dnet [2022-11-03 02:07:18,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_dnet [2022-11-03 02:07:18,438 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:07:18,438 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:07:18,439 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_readw_mac [2022-11-03 02:07:18,439 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_readw_mac [2022-11-03 02:07:18,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:07:18,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:07:18,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:07:18,440 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-03 02:07:18,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-03 02:07:18,440 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:07:18,440 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:07:18,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:07:18,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:07:18,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-03 02:07:18,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-03 02:07:18,444 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_close [2022-11-03 02:07:18,444 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_close [2022-11-03 02:07:18,445 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2022-11-03 02:07:18,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2022-11-03 02:07:18,446 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_handle_link_change [2022-11-03 02:07:18,446 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_handle_link_change [2022-11-03 02:07:18,446 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 02:07:18,446 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 02:07:18,452 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:07:18,453 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:07:18,453 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_writew_mac [2022-11-03 02:07:18,453 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_writew_mac [2022-11-03 02:07:18,453 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:07:18,453 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:07:18,453 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:07:18,453 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:07:18,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:07:18,453 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:07:18,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:07:18,454 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_remove [2022-11-03 02:07:18,454 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_remove [2022-11-03 02:07:18,454 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 02:07:18,454 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 02:07:18,454 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_open [2022-11-03 02:07:18,454 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_open [2022-11-03 02:07:18,454 INFO L130 BoogieDeclarations]: Found specification of procedure phy_connect [2022-11-03 02:07:18,454 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_connect [2022-11-03 02:07:18,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:07:18,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:07:18,455 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-03 02:07:18,455 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-03 02:07:18,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:07:18,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:07:18,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:07:18,455 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-03 02:07:18,456 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-03 02:07:19,262 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:07:19,267 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:07:20,174 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:07:25,997 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 02:07:26,062 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:07:27,015 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:07:27,015 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:07:27,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:07:27 BoogieIcfgContainer [2022-11-03 02:07:27,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:07:27,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:07:27,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:07:27,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:07:27,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:07:14" (1/3) ... [2022-11-03 02:07:27,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3d6f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:07:27, skipping insertion in model container [2022-11-03 02:07:27,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:17" (2/3) ... [2022-11-03 02:07:27,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3d6f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:07:27, skipping insertion in model container [2022-11-03 02:07:27,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:07:27" (3/3) ... [2022-11-03 02:07:27,031 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i [2022-11-03 02:07:27,049 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:07:27,050 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 02:07:27,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:07:27,122 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;@34d2e48f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:07:27,123 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 02:07:27,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 970 states, 581 states have (on average 1.306368330464716) internal successors, (759), 594 states have internal predecessors, (759), 324 states have call successors, (324), 63 states have call predecessors, (324), 62 states have return successors, (317), 315 states have call predecessors, (317), 317 states have call successors, (317) [2022-11-03 02:07:27,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-03 02:07:27,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:27,147 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:27,148 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 02:07:27,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:27,154 INFO L85 PathProgramCache]: Analyzing trace with hash 568666750, now seen corresponding path program 1 times [2022-11-03 02:07:27,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:27,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375277413] [2022-11-03 02:07:27,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:27,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:27,825 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-11-03 02:07:27,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:27,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375277413] [2022-11-03 02:07:27,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375277413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:27,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:27,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:07:27,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989554286] [2022-11-03 02:07:27,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:27,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:27,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:27,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:27,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:27,865 INFO L87 Difference]: Start difference. First operand has 970 states, 581 states have (on average 1.306368330464716) internal successors, (759), 594 states have internal predecessors, (759), 324 states have call successors, (324), 63 states have call predecessors, (324), 62 states have return successors, (317), 315 states have call predecessors, (317), 317 states have call successors, (317) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 02:07:30,410 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 02:07:33,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:33,410 INFO L93 Difference]: Finished difference Result 2749 states and 4003 transitions. [2022-11-03 02:07:33,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:33,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 117 [2022-11-03 02:07:33,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:33,447 INFO L225 Difference]: With dead ends: 2749 [2022-11-03 02:07:33,447 INFO L226 Difference]: Without dead ends: 1788 [2022-11-03 02:07:33,455 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 02:07:33,458 INFO L413 NwaCegarLoop]: 1404 mSDtfsCounter, 1223 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 2517 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:33,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 2517 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 510 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-11-03 02:07:33,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2022-11-03 02:07:33,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1784. [2022-11-03 02:07:33,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1088 states have (on average 1.3060661764705883) internal successors, (1421), 1112 states have internal predecessors, (1421), 572 states have call successors, (572), 122 states have call predecessors, (572), 121 states have return successors, (569), 565 states have call predecessors, (569), 569 states have call successors, (569) [2022-11-03 02:07:33,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2562 transitions. [2022-11-03 02:07:33,645 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2562 transitions. Word has length 117 [2022-11-03 02:07:33,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:33,647 INFO L495 AbstractCegarLoop]: Abstraction has 1784 states and 2562 transitions. [2022-11-03 02:07:33,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 02:07:33,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2562 transitions. [2022-11-03 02:07:33,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-03 02:07:33,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:33,651 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:33,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:07:33,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:07:33,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:33,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1222086011, now seen corresponding path program 1 times [2022-11-03 02:07:33,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:33,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568823207] [2022-11-03 02:07:33,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:33,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:34,029 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-11-03 02:07:34,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:34,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568823207] [2022-11-03 02:07:34,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568823207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:34,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:34,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:07:34,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578313752] [2022-11-03 02:07:34,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:34,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:34,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:34,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:34,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:34,042 INFO L87 Difference]: Start difference. First operand 1784 states and 2562 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 02:07:36,377 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 02:07:39,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:39,447 INFO L93 Difference]: Finished difference Result 5114 states and 7427 transitions. [2022-11-03 02:07:39,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:39,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 119 [2022-11-03 02:07:39,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:39,475 INFO L225 Difference]: With dead ends: 5114 [2022-11-03 02:07:39,476 INFO L226 Difference]: Without dead ends: 3351 [2022-11-03 02:07:39,484 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 02:07:39,485 INFO L413 NwaCegarLoop]: 1490 mSDtfsCounter, 1178 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 2616 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:39,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 2616 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 531 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-11-03 02:07:39,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3351 states. [2022-11-03 02:07:39,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3351 to 3322. [2022-11-03 02:07:39,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3322 states, 2047 states have (on average 1.3141182217879823) internal successors, (2690), 2097 states have internal predecessors, (2690), 1033 states have call successors, (1033), 242 states have call predecessors, (1033), 239 states have return successors, (1130), 1012 states have call predecessors, (1130), 1030 states have call successors, (1130) [2022-11-03 02:07:39,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3322 states to 3322 states and 4853 transitions. [2022-11-03 02:07:39,675 INFO L78 Accepts]: Start accepts. Automaton has 3322 states and 4853 transitions. Word has length 119 [2022-11-03 02:07:39,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:39,676 INFO L495 AbstractCegarLoop]: Abstraction has 3322 states and 4853 transitions. [2022-11-03 02:07:39,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 02:07:39,676 INFO L276 IsEmpty]: Start isEmpty. Operand 3322 states and 4853 transitions. [2022-11-03 02:07:39,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-03 02:07:39,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:39,679 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:39,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:07:39,680 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:07:39,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:39,680 INFO L85 PathProgramCache]: Analyzing trace with hash -2114285433, now seen corresponding path program 1 times [2022-11-03 02:07:39,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:39,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389660170] [2022-11-03 02:07:39,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:39,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:40,062 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-11-03 02:07:40,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:40,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389660170] [2022-11-03 02:07:40,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389660170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:40,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:40,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:07:40,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338915701] [2022-11-03 02:07:40,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:40,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:40,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:40,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:40,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:40,066 INFO L87 Difference]: Start difference. First operand 3322 states and 4853 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 02:07:42,734 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 02:07:45,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:45,939 INFO L93 Difference]: Finished difference Result 9306 states and 13482 transitions. [2022-11-03 02:07:45,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:45,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 127 [2022-11-03 02:07:45,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:45,978 INFO L225 Difference]: With dead ends: 9306 [2022-11-03 02:07:45,979 INFO L226 Difference]: Without dead ends: 6005 [2022-11-03 02:07:45,995 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 02:07:45,996 INFO L413 NwaCegarLoop]: 1490 mSDtfsCounter, 1010 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:45,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 2553 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 621 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-11-03 02:07:46,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6005 states. [2022-11-03 02:07:46,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6005 to 5972. [2022-11-03 02:07:46,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5972 states, 3641 states have (on average 1.284811864872288) internal successors, (4678), 3747 states have internal predecessors, (4678), 1863 states have call successors, (1863), 470 states have call predecessors, (1863), 465 states have return successors, (1966), 1814 states have call predecessors, (1966), 1860 states have call successors, (1966) [2022-11-03 02:07:46,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5972 states to 5972 states and 8507 transitions. [2022-11-03 02:07:46,427 INFO L78 Accepts]: Start accepts. Automaton has 5972 states and 8507 transitions. Word has length 127 [2022-11-03 02:07:46,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:46,428 INFO L495 AbstractCegarLoop]: Abstraction has 5972 states and 8507 transitions. [2022-11-03 02:07:46,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 02:07:46,428 INFO L276 IsEmpty]: Start isEmpty. Operand 5972 states and 8507 transitions. [2022-11-03 02:07:46,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-03 02:07:46,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:46,432 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:46,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:07:46,433 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:07:46,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:46,434 INFO L85 PathProgramCache]: Analyzing trace with hash 744030197, now seen corresponding path program 1 times [2022-11-03 02:07:46,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:46,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797628356] [2022-11-03 02:07:46,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:46,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:46,706 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-11-03 02:07:46,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:46,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797628356] [2022-11-03 02:07:46,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797628356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:46,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:46,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:07:46,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121602745] [2022-11-03 02:07:46,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:46,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:46,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:46,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:46,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:46,710 INFO L87 Difference]: Start difference. First operand 5972 states and 8507 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 02:07:49,781 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 02:07:52,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:52,072 INFO L93 Difference]: Finished difference Result 16694 states and 23960 transitions. [2022-11-03 02:07:52,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:52,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 135 [2022-11-03 02:07:52,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:52,143 INFO L225 Difference]: With dead ends: 16694 [2022-11-03 02:07:52,143 INFO L226 Difference]: Without dead ends: 10743 [2022-11-03 02:07:52,171 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 02:07:52,172 INFO L413 NwaCegarLoop]: 1386 mSDtfsCounter, 1091 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 2489 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:52,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1091 Valid, 2489 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 532 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-11-03 02:07:52,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10743 states. [2022-11-03 02:07:52,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10743 to 10702. [2022-11-03 02:07:52,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10702 states, 6517 states have (on average 1.2696025778732545) internal successors, (8274), 6719 states have internal predecessors, (8274), 3303 states have call successors, (3303), 896 states have call predecessors, (3303), 879 states have return successors, (3818), 3178 states have call predecessors, (3818), 3300 states have call successors, (3818) [2022-11-03 02:07:52,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10702 states to 10702 states and 15395 transitions. [2022-11-03 02:07:52,943 INFO L78 Accepts]: Start accepts. Automaton has 10702 states and 15395 transitions. Word has length 135 [2022-11-03 02:07:52,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:52,944 INFO L495 AbstractCegarLoop]: Abstraction has 10702 states and 15395 transitions. [2022-11-03 02:07:52,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 02:07:52,945 INFO L276 IsEmpty]: Start isEmpty. Operand 10702 states and 15395 transitions. [2022-11-03 02:07:52,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-03 02:07:52,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:52,951 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 10, 10, 10, 10, 10, 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] [2022-11-03 02:07:52,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:07:52,952 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:07:52,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:52,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1624052245, now seen corresponding path program 1 times [2022-11-03 02:07:52,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:52,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677378838] [2022-11-03 02:07:52,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:52,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2022-11-03 02:07:53,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:53,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677378838] [2022-11-03 02:07:53,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677378838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:53,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:53,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:07:53,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459451243] [2022-11-03 02:07:53,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:53,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:53,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:53,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:53,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:53,211 INFO L87 Difference]: Start difference. First operand 10702 states and 15395 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 02:07:56,625 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 02:07:58,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:58,588 INFO L93 Difference]: Finished difference Result 20180 states and 29062 transitions. [2022-11-03 02:07:58,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:58,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 146 [2022-11-03 02:07:58,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:58,647 INFO L225 Difference]: With dead ends: 20180 [2022-11-03 02:07:58,647 INFO L226 Difference]: Without dead ends: 9499 [2022-11-03 02:07:58,694 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 02:07:58,695 INFO L413 NwaCegarLoop]: 1829 mSDtfsCounter, 1177 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:58,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 2924 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 689 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-11-03 02:07:58,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9499 states. [2022-11-03 02:07:59,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9499 to 9467. [2022-11-03 02:07:59,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9467 states, 5871 states have (on average 1.2679270993016523) internal successors, (7444), 6060 states have internal predecessors, (7444), 2813 states have call successors, (2813), 793 states have call predecessors, (2813), 780 states have return successors, (3302), 2695 states have call predecessors, (3302), 2810 states have call successors, (3302) [2022-11-03 02:07:59,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9467 states to 9467 states and 13559 transitions. [2022-11-03 02:07:59,295 INFO L78 Accepts]: Start accepts. Automaton has 9467 states and 13559 transitions. Word has length 146 [2022-11-03 02:07:59,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:59,295 INFO L495 AbstractCegarLoop]: Abstraction has 9467 states and 13559 transitions. [2022-11-03 02:07:59,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 02:07:59,296 INFO L276 IsEmpty]: Start isEmpty. Operand 9467 states and 13559 transitions. [2022-11-03 02:07:59,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-03 02:07:59,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:59,299 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:59,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:07:59,299 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 02:07:59,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:59,300 INFO L85 PathProgramCache]: Analyzing trace with hash 549316243, now seen corresponding path program 1 times [2022-11-03 02:07:59,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:59,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908819523] [2022-11-03 02:07:59,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:59,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-11-03 02:07:59,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:59,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908819523] [2022-11-03 02:07:59,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908819523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:59,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:59,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:07:59,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037527671] [2022-11-03 02:07:59,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:59,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:07:59,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:59,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:07:59,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:07:59,940 INFO L87 Difference]: Start difference. First operand 9467 states and 13559 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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 02:08:03,124 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 02:08:07,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:07,703 INFO L93 Difference]: Finished difference Result 18804 states and 26945 transitions. [2022-11-03 02:08:07,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:08:07,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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 155 [2022-11-03 02:08:07,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:07,790 INFO L225 Difference]: With dead ends: 18804 [2022-11-03 02:08:07,790 INFO L226 Difference]: Without dead ends: 18802 [2022-11-03 02:08:07,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:08:07,803 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 1246 mSDsluCounter, 4617 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 5256 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:07,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 5256 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1026 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-11-03 02:08:07,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18802 states. [2022-11-03 02:08:08,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18802 to 18796. [2022-11-03 02:08:08,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18796 states, 11644 states have (on average 1.269838543455857) internal successors, (14786), 12020 states have internal predecessors, (14786), 5588 states have call successors, (5588), 1587 states have call predecessors, (5588), 1561 states have return successors, (6566), 5352 states have call predecessors, (6566), 5582 states have call successors, (6566) [2022-11-03 02:08:09,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18796 states to 18796 states and 26940 transitions. [2022-11-03 02:08:09,042 INFO L78 Accepts]: Start accepts. Automaton has 18796 states and 26940 transitions. Word has length 155 [2022-11-03 02:08:09,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:09,043 INFO L495 AbstractCegarLoop]: Abstraction has 18796 states and 26940 transitions. [2022-11-03 02:08:09,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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 02:08:09,043 INFO L276 IsEmpty]: Start isEmpty. Operand 18796 states and 26940 transitions. [2022-11-03 02:08:09,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-03 02:08:09,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:09,046 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:08:09,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:08:09,046 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 02:08:09,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:09,047 INFO L85 PathProgramCache]: Analyzing trace with hash -905786563, now seen corresponding path program 1 times [2022-11-03 02:08:09,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:09,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852193705] [2022-11-03 02:08:09,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:09,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:09,562 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-11-03 02:08:09,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:09,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852193705] [2022-11-03 02:08:09,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852193705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:09,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:08:09,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:08:09,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508296867] [2022-11-03 02:08:09,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:09,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:08:09,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:09,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:08:09,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:08:09,565 INFO L87 Difference]: Start difference. First operand 18796 states and 26940 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:08:12,838 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 02:08:17,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:17,386 INFO L93 Difference]: Finished difference Result 18808 states and 26948 transitions. [2022-11-03 02:08:17,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:08:17,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 160 [2022-11-03 02:08:17,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:17,467 INFO L225 Difference]: With dead ends: 18808 [2022-11-03 02:08:17,467 INFO L226 Difference]: Without dead ends: 18806 [2022-11-03 02:08:17,475 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 02:08:17,476 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 1241 mSDsluCounter, 4617 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 5259 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:17,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1251 Valid, 5259 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1026 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-11-03 02:08:17,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18806 states. [2022-11-03 02:08:18,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18806 to 18800. [2022-11-03 02:08:18,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18800 states, 11647 states have (on average 1.269769039237572) internal successors, (14789), 12023 states have internal predecessors, (14789), 5588 states have call successors, (5588), 1588 states have call predecessors, (5588), 1562 states have return successors, (6566), 5352 states have call predecessors, (6566), 5582 states have call successors, (6566) [2022-11-03 02:08:18,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18800 states to 18800 states and 26943 transitions. [2022-11-03 02:08:18,779 INFO L78 Accepts]: Start accepts. Automaton has 18800 states and 26943 transitions. Word has length 160 [2022-11-03 02:08:18,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:18,783 INFO L495 AbstractCegarLoop]: Abstraction has 18800 states and 26943 transitions. [2022-11-03 02:08:18,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:08:18,783 INFO L276 IsEmpty]: Start isEmpty. Operand 18800 states and 26943 transitions. [2022-11-03 02:08:18,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-03 02:08:18,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:18,786 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:08:18,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:08:18,787 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 02:08:18,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:18,787 INFO L85 PathProgramCache]: Analyzing trace with hash 2120308883, now seen corresponding path program 1 times [2022-11-03 02:08:18,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:18,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27796490] [2022-11-03 02:08:18,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:18,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 479 trivial. 0 not checked. [2022-11-03 02:08:19,397 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:19,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27796490] [2022-11-03 02:08:19,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27796490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:19,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:08:19,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:08:19,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899444521] [2022-11-03 02:08:19,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:19,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:08:19,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:19,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:08:19,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:08:19,400 INFO L87 Difference]: Start difference. First operand 18800 states and 26943 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (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 02:08:22,558 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 02:08:26,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:26,829 INFO L93 Difference]: Finished difference Result 18812 states and 26951 transitions. [2022-11-03 02:08:26,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:08:26,833 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (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 165 [2022-11-03 02:08:26,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:26,918 INFO L225 Difference]: With dead ends: 18812 [2022-11-03 02:08:26,919 INFO L226 Difference]: Without dead ends: 18810 [2022-11-03 02:08:26,931 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 02:08:26,932 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 1241 mSDsluCounter, 4617 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 5259 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:26,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1250 Valid, 5259 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1026 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-03 02:08:26,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18810 states. [2022-11-03 02:08:27,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18810 to 18804. [2022-11-03 02:08:27,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18804 states, 11650 states have (on average 1.2696995708154506) internal successors, (14792), 12026 states have internal predecessors, (14792), 5588 states have call successors, (5588), 1589 states have call predecessors, (5588), 1563 states have return successors, (6566), 5352 states have call predecessors, (6566), 5582 states have call successors, (6566) [2022-11-03 02:08:28,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18804 states to 18804 states and 26946 transitions. [2022-11-03 02:08:28,159 INFO L78 Accepts]: Start accepts. Automaton has 18804 states and 26946 transitions. Word has length 165 [2022-11-03 02:08:28,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:28,160 INFO L495 AbstractCegarLoop]: Abstraction has 18804 states and 26946 transitions. [2022-11-03 02:08:28,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (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 02:08:28,160 INFO L276 IsEmpty]: Start isEmpty. Operand 18804 states and 26946 transitions. [2022-11-03 02:08:28,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-03 02:08:28,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:28,164 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 6, 6, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:08:28,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:08:28,164 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 02:08:28,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:28,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1610420715, now seen corresponding path program 1 times [2022-11-03 02:08:28,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:28,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938144235] [2022-11-03 02:08:28,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:28,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:28,722 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-11-03 02:08:28,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:28,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938144235] [2022-11-03 02:08:28,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938144235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:28,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:08:28,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:08:28,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581436022] [2022-11-03 02:08:28,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:28,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:08:28,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:28,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:08:28,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:08:28,726 INFO L87 Difference]: Start difference. First operand 18804 states and 26946 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 02:08:32,268 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 02:08:36,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:36,682 INFO L93 Difference]: Finished difference Result 18816 states and 26954 transitions. [2022-11-03 02:08:36,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:08:36,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 179 [2022-11-03 02:08:36,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:36,773 INFO L225 Difference]: With dead ends: 18816 [2022-11-03 02:08:36,773 INFO L226 Difference]: Without dead ends: 18814 [2022-11-03 02:08:36,786 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 02:08:36,787 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 1237 mSDsluCounter, 4617 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 5259 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:36,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1245 Valid, 5259 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1026 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-11-03 02:08:36,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18814 states. [2022-11-03 02:08:37,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18814 to 18808. [2022-11-03 02:08:37,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18808 states, 11653 states have (on average 1.2696301381618467) internal successors, (14795), 12029 states have internal predecessors, (14795), 5588 states have call successors, (5588), 1590 states have call predecessors, (5588), 1564 states have return successors, (6566), 5352 states have call predecessors, (6566), 5582 states have call successors, (6566) [2022-11-03 02:08:37,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18808 states to 18808 states and 26949 transitions. [2022-11-03 02:08:37,727 INFO L78 Accepts]: Start accepts. Automaton has 18808 states and 26949 transitions. Word has length 179 [2022-11-03 02:08:37,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:37,728 INFO L495 AbstractCegarLoop]: Abstraction has 18808 states and 26949 transitions. [2022-11-03 02:08:37,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 02:08:37,728 INFO L276 IsEmpty]: Start isEmpty. Operand 18808 states and 26949 transitions. [2022-11-03 02:08:37,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-03 02:08:37,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:37,732 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:08:37,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:08:37,732 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 02:08:37,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:37,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1716517523, now seen corresponding path program 1 times [2022-11-03 02:08:37,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:37,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074909948] [2022-11-03 02:08:37,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:37,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:38,159 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2022-11-03 02:08:38,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:38,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074909948] [2022-11-03 02:08:38,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074909948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:38,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:08:38,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:08:38,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996510305] [2022-11-03 02:08:38,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:38,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:08:38,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:38,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:08:38,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:08:38,162 INFO L87 Difference]: Start difference. First operand 18808 states and 26949 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:08:41,474 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 02:08:45,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:45,717 INFO L93 Difference]: Finished difference Result 18820 states and 26957 transitions. [2022-11-03 02:08:45,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:08:45,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 175 [2022-11-03 02:08:45,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:45,908 INFO L225 Difference]: With dead ends: 18820 [2022-11-03 02:08:45,908 INFO L226 Difference]: Without dead ends: 18818 [2022-11-03 02:08:45,916 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 02:08:45,917 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 1241 mSDsluCounter, 4617 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 5259 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:45,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1248 Valid, 5259 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1026 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-03 02:08:45,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18818 states. [2022-11-03 02:08:47,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18818 to 18812. [2022-11-03 02:08:47,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18812 states, 11656 states have (on average 1.269560741249142) internal successors, (14798), 12032 states have internal predecessors, (14798), 5588 states have call successors, (5588), 1591 states have call predecessors, (5588), 1565 states have return successors, (6566), 5352 states have call predecessors, (6566), 5582 states have call successors, (6566) [2022-11-03 02:08:47,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18812 states to 18812 states and 26952 transitions. [2022-11-03 02:08:47,166 INFO L78 Accepts]: Start accepts. Automaton has 18812 states and 26952 transitions. Word has length 175 [2022-11-03 02:08:47,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:47,166 INFO L495 AbstractCegarLoop]: Abstraction has 18812 states and 26952 transitions. [2022-11-03 02:08:47,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:08:47,167 INFO L276 IsEmpty]: Start isEmpty. Operand 18812 states and 26952 transitions. [2022-11-03 02:08:47,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-03 02:08:47,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:47,170 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:08:47,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:08:47,171 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 02:08:47,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:47,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1360107069, now seen corresponding path program 1 times [2022-11-03 02:08:47,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:47,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072845182] [2022-11-03 02:08:47,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:47,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:47,614 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2022-11-03 02:08:47,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:47,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072845182] [2022-11-03 02:08:47,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072845182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:47,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:08:47,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:08:47,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525629808] [2022-11-03 02:08:47,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:47,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:08:47,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:47,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:08:47,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:08:47,618 INFO L87 Difference]: Start difference. First operand 18812 states and 26952 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 02:08:50,853 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 02:08:55,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:55,061 INFO L93 Difference]: Finished difference Result 18824 states and 26960 transitions. [2022-11-03 02:08:55,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:08:55,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 180 [2022-11-03 02:08:55,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:55,117 INFO L225 Difference]: With dead ends: 18824 [2022-11-03 02:08:55,117 INFO L226 Difference]: Without dead ends: 18822 [2022-11-03 02:08:55,126 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 02:08:55,127 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 1241 mSDsluCounter, 4617 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 5259 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:55,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 5259 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1026 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-11-03 02:08:55,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18822 states. [2022-11-03 02:08:56,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18822 to 18816. [2022-11-03 02:08:56,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18816 states, 11659 states have (on average 1.269491380049747) internal successors, (14801), 12035 states have internal predecessors, (14801), 5588 states have call successors, (5588), 1592 states have call predecessors, (5588), 1566 states have return successors, (6566), 5352 states have call predecessors, (6566), 5582 states have call successors, (6566) [2022-11-03 02:08:56,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18816 states to 18816 states and 26955 transitions. [2022-11-03 02:08:56,322 INFO L78 Accepts]: Start accepts. Automaton has 18816 states and 26955 transitions. Word has length 180 [2022-11-03 02:08:56,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:56,322 INFO L495 AbstractCegarLoop]: Abstraction has 18816 states and 26955 transitions. [2022-11-03 02:08:56,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 02:08:56,323 INFO L276 IsEmpty]: Start isEmpty. Operand 18816 states and 26955 transitions. [2022-11-03 02:08:56,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-03 02:08:56,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:56,326 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:08:56,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:08:56,327 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 02:08:56,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:56,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1739731821, now seen corresponding path program 1 times [2022-11-03 02:08:56,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:56,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163106951] [2022-11-03 02:08:56,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:56,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2022-11-03 02:08:56,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:56,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163106951] [2022-11-03 02:08:56,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163106951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:56,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:08:56,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:08:56,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547957978] [2022-11-03 02:08:56,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:56,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:08:56,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:56,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:08:56,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:08:56,863 INFO L87 Difference]: Start difference. First operand 18816 states and 26955 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 02:09:00,296 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 02:09:05,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:05,023 INFO L93 Difference]: Finished difference Result 27365 states and 39040 transitions. [2022-11-03 02:09:05,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:09:05,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 185 [2022-11-03 02:09:05,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:05,118 INFO L225 Difference]: With dead ends: 27365 [2022-11-03 02:09:05,118 INFO L226 Difference]: Without dead ends: 27363 [2022-11-03 02:09:05,131 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 02:09:05,132 INFO L413 NwaCegarLoop]: 1361 mSDtfsCounter, 1068 mSDsluCounter, 4539 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 5146 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:05,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 5146 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1030 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-11-03 02:09:05,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27363 states. [2022-11-03 02:09:06,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27363 to 27345. [2022-11-03 02:09:06,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27345 states, 16923 states have (on average 1.2680966731666963) internal successors, (21460), 17506 states have internal predecessors, (21460), 8047 states have call successors, (8047), 2445 states have call predecessors, (8047), 2372 states have return successors, (9514), 7627 states have call predecessors, (9514), 8038 states have call successors, (9514) [2022-11-03 02:09:06,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27345 states to 27345 states and 39021 transitions. [2022-11-03 02:09:06,585 INFO L78 Accepts]: Start accepts. Automaton has 27345 states and 39021 transitions. Word has length 185 [2022-11-03 02:09:06,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:06,585 INFO L495 AbstractCegarLoop]: Abstraction has 27345 states and 39021 transitions. [2022-11-03 02:09:06,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 02:09:06,586 INFO L276 IsEmpty]: Start isEmpty. Operand 27345 states and 39021 transitions. [2022-11-03 02:09:06,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-03 02:09:06,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:06,588 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 8, 7, 7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:06,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:09:06,589 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 02:09:06,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:06,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1873484267, now seen corresponding path program 1 times [2022-11-03 02:09:06,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:06,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854827704] [2022-11-03 02:09:06,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:06,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:07,000 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2022-11-03 02:09:07,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:07,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854827704] [2022-11-03 02:09:07,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854827704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:07,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:07,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:09:07,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376586428] [2022-11-03 02:09:07,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:07,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:09:07,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:07,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:09:07,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:07,003 INFO L87 Difference]: Start difference. First operand 27345 states and 39021 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:09:10,313 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 02:09:15,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:15,255 INFO L93 Difference]: Finished difference Result 27357 states and 39029 transitions. [2022-11-03 02:09:15,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:09:15,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 199 [2022-11-03 02:09:15,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:15,340 INFO L225 Difference]: With dead ends: 27357 [2022-11-03 02:09:15,341 INFO L226 Difference]: Without dead ends: 27355 [2022-11-03 02:09:15,348 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 02:09:15,348 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 1237 mSDsluCounter, 4617 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 5259 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:15,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 5259 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1026 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2022-11-03 02:09:15,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27355 states. [2022-11-03 02:09:16,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27355 to 27349. [2022-11-03 02:09:16,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27349 states, 16926 states have (on average 1.2680491551459294) internal successors, (21463), 17509 states have internal predecessors, (21463), 8047 states have call successors, (8047), 2446 states have call predecessors, (8047), 2373 states have return successors, (9514), 7627 states have call predecessors, (9514), 8038 states have call successors, (9514) [2022-11-03 02:09:16,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27349 states to 27349 states and 39024 transitions. [2022-11-03 02:09:16,801 INFO L78 Accepts]: Start accepts. Automaton has 27349 states and 39024 transitions. Word has length 199 [2022-11-03 02:09:16,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:16,802 INFO L495 AbstractCegarLoop]: Abstraction has 27349 states and 39024 transitions. [2022-11-03 02:09:16,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:09:16,802 INFO L276 IsEmpty]: Start isEmpty. Operand 27349 states and 39024 transitions. [2022-11-03 02:09:16,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-03 02:09:16,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:16,805 INFO L195 NwaCegarLoop]: trace histogram [15, 10, 10, 10, 10, 10, 10, 5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:16,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:09:16,806 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 02:09:16,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:16,806 INFO L85 PathProgramCache]: Analyzing trace with hash -290612860, now seen corresponding path program 1 times [2022-11-03 02:09:16,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:16,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188937513] [2022-11-03 02:09:16,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:16,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:17,038 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2022-11-03 02:09:17,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:17,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188937513] [2022-11-03 02:09:17,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188937513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:17,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:17,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:17,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453940209] [2022-11-03 02:09:17,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:17,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:17,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:17,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:17,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:17,041 INFO L87 Difference]: Start difference. First operand 27349 states and 39024 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-03 02:09:20,561 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 02:09:23,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:23,819 INFO L93 Difference]: Finished difference Result 65851 states and 94246 transitions. [2022-11-03 02:09:23,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:23,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 189 [2022-11-03 02:09:23,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:23,974 INFO L225 Difference]: With dead ends: 65851 [2022-11-03 02:09:23,974 INFO L226 Difference]: Without dead ends: 38584 [2022-11-03 02:09:24,089 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 02:09:24,090 INFO L413 NwaCegarLoop]: 2055 mSDtfsCounter, 1174 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:24,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 3146 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 740 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-11-03 02:09:24,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38584 states. [2022-11-03 02:09:26,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38584 to 38464. [2022-11-03 02:09:26,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38464 states, 23980 states have (on average 1.269724770642202) internal successors, (30448), 24806 states have internal predecessors, (30448), 11150 states have call successors, (11150), 3433 states have call predecessors, (11150), 3331 states have return successors, (13316), 10556 states have call predecessors, (13316), 11141 states have call successors, (13316) [2022-11-03 02:09:26,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38464 states to 38464 states and 54914 transitions. [2022-11-03 02:09:26,664 INFO L78 Accepts]: Start accepts. Automaton has 38464 states and 54914 transitions. Word has length 189 [2022-11-03 02:09:26,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:26,665 INFO L495 AbstractCegarLoop]: Abstraction has 38464 states and 54914 transitions. [2022-11-03 02:09:26,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-03 02:09:26,665 INFO L276 IsEmpty]: Start isEmpty. Operand 38464 states and 54914 transitions. [2022-11-03 02:09:26,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-03 02:09:26,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:26,667 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 9, 8, 8, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:26,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 02:09:26,667 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 02:09:26,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:26,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1699976485, now seen corresponding path program 1 times [2022-11-03 02:09:26,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:26,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454765630] [2022-11-03 02:09:26,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:26,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:27,074 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2022-11-03 02:09:27,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:27,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454765630] [2022-11-03 02:09:27,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454765630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:27,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:27,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:09:27,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110941400] [2022-11-03 02:09:27,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:27,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:09:27,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:27,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:09:27,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:27,077 INFO L87 Difference]: Start difference. First operand 38464 states and 54914 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 02:09:30,567 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 02:09:35,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:35,734 INFO L93 Difference]: Finished difference Result 38476 states and 54922 transitions. [2022-11-03 02:09:35,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:09:35,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 204 [2022-11-03 02:09:35,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:35,897 INFO L225 Difference]: With dead ends: 38476 [2022-11-03 02:09:35,897 INFO L226 Difference]: Without dead ends: 38474 [2022-11-03 02:09:35,923 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 02:09:35,923 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 1237 mSDsluCounter, 4617 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 5259 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:35,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 5259 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1026 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-03 02:09:35,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38474 states. [2022-11-03 02:09:38,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38474 to 38468. [2022-11-03 02:09:38,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38468 states, 23983 states have (on average 1.2696910311470626) internal successors, (30451), 24809 states have internal predecessors, (30451), 11150 states have call successors, (11150), 3434 states have call predecessors, (11150), 3332 states have return successors, (13316), 10556 states have call predecessors, (13316), 11141 states have call successors, (13316) [2022-11-03 02:09:38,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38468 states to 38468 states and 54917 transitions. [2022-11-03 02:09:38,245 INFO L78 Accepts]: Start accepts. Automaton has 38468 states and 54917 transitions. Word has length 204 [2022-11-03 02:09:38,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:38,246 INFO L495 AbstractCegarLoop]: Abstraction has 38468 states and 54917 transitions. [2022-11-03 02:09:38,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 02:09:38,246 INFO L276 IsEmpty]: Start isEmpty. Operand 38468 states and 54917 transitions. [2022-11-03 02:09:38,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-03 02:09:38,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:38,248 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 10, 9, 9, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:38,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 02:09:38,248 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 02:09:38,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:38,249 INFO L85 PathProgramCache]: Analyzing trace with hash -589586115, now seen corresponding path program 1 times [2022-11-03 02:09:38,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:38,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925033723] [2022-11-03 02:09:38,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:38,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:38,856 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 619 trivial. 0 not checked. [2022-11-03 02:09:38,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:38,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925033723] [2022-11-03 02:09:38,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925033723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:38,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:38,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:09:38,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773407179] [2022-11-03 02:09:38,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:38,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:09:38,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:38,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:09:38,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:38,861 INFO L87 Difference]: Start difference. First operand 38468 states and 54917 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:09:42,494 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 02:09:47,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:47,272 INFO L93 Difference]: Finished difference Result 38480 states and 54925 transitions. [2022-11-03 02:09:47,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:09:47,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 200 [2022-11-03 02:09:47,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:47,395 INFO L225 Difference]: With dead ends: 38480 [2022-11-03 02:09:47,395 INFO L226 Difference]: Without dead ends: 38478 [2022-11-03 02:09:47,413 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 02:09:47,414 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 1241 mSDsluCounter, 4617 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 5259 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:47,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1243 Valid, 5259 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1026 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-11-03 02:09:47,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38478 states. [2022-11-03 02:09:49,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38478 to 38472. [2022-11-03 02:09:49,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38472 states, 23986 states have (on average 1.2696573000917202) internal successors, (30454), 24812 states have internal predecessors, (30454), 11150 states have call successors, (11150), 3435 states have call predecessors, (11150), 3333 states have return successors, (13316), 10556 states have call predecessors, (13316), 11141 states have call successors, (13316) [2022-11-03 02:09:49,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38472 states to 38472 states and 54920 transitions. [2022-11-03 02:09:49,313 INFO L78 Accepts]: Start accepts. Automaton has 38472 states and 54920 transitions. Word has length 200 [2022-11-03 02:09:49,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:49,314 INFO L495 AbstractCegarLoop]: Abstraction has 38472 states and 54920 transitions. [2022-11-03 02:09:49,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:09:49,314 INFO L276 IsEmpty]: Start isEmpty. Operand 38472 states and 54920 transitions. [2022-11-03 02:09:49,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-03 02:09:49,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:49,316 INFO L195 NwaCegarLoop]: trace histogram [14, 11, 10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:49,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 02:09:49,317 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:09:49,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:49,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1601765229, now seen corresponding path program 1 times [2022-11-03 02:09:49,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:49,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498644807] [2022-11-03 02:09:49,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:49,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:49,728 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2022-11-03 02:09:49,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:49,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498644807] [2022-11-03 02:09:49,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498644807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:49,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:49,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:09:49,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612108014] [2022-11-03 02:09:49,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:49,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:09:49,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:49,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:09:49,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:49,732 INFO L87 Difference]: Start difference. First operand 38472 states and 54920 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 02:09:53,775 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 02:09:58,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:58,691 INFO L93 Difference]: Finished difference Result 38484 states and 54928 transitions. [2022-11-03 02:09:58,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:09:58,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 205 [2022-11-03 02:09:58,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:58,817 INFO L225 Difference]: With dead ends: 38484 [2022-11-03 02:09:58,817 INFO L226 Difference]: Without dead ends: 38480 [2022-11-03 02:09:58,833 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 02:09:58,834 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 1241 mSDsluCounter, 4617 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 5259 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:58,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 5259 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1026 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-11-03 02:09:58,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38480 states. [2022-11-03 02:10:00,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38480 to 38474. [2022-11-03 02:10:00,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38474 states, 23988 states have (on average 1.2695931298982825) internal successors, (30455), 24813 states have internal predecessors, (30455), 11150 states have call successors, (11150), 3436 states have call predecessors, (11150), 3333 states have return successors, (13316), 10556 states have call predecessors, (13316), 11141 states have call successors, (13316) [2022-11-03 02:10:00,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38474 states to 38474 states and 54921 transitions. [2022-11-03 02:10:00,936 INFO L78 Accepts]: Start accepts. Automaton has 38474 states and 54921 transitions. Word has length 205 [2022-11-03 02:10:00,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:00,937 INFO L495 AbstractCegarLoop]: Abstraction has 38474 states and 54921 transitions. [2022-11-03 02:10:00,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 02:10:00,937 INFO L276 IsEmpty]: Start isEmpty. Operand 38474 states and 54921 transitions. [2022-11-03 02:10:00,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-03 02:10:00,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:00,940 INFO L195 NwaCegarLoop]: trace histogram [14, 12, 11, 11, 10, 10, 10, 10, 10, 10, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:10:00,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 02:10:00,941 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:10:00,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:00,941 INFO L85 PathProgramCache]: Analyzing trace with hash 519888573, now seen corresponding path program 1 times [2022-11-03 02:10:00,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:00,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146014326] [2022-11-03 02:10:00,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:00,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:01,329 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 695 trivial. 0 not checked. [2022-11-03 02:10:01,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:01,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146014326] [2022-11-03 02:10:01,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146014326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:01,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:10:01,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:10:01,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138961197] [2022-11-03 02:10:01,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:01,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:10:01,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:01,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:10:01,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:10:01,331 INFO L87 Difference]: Start difference. First operand 38474 states and 54921 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:10:04,895 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 02:10:10,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:10,261 INFO L93 Difference]: Finished difference Result 38480 states and 54924 transitions. [2022-11-03 02:10:10,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:10:10,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 210 [2022-11-03 02:10:10,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:10,434 INFO L225 Difference]: With dead ends: 38480 [2022-11-03 02:10:10,434 INFO L226 Difference]: Without dead ends: 38294 [2022-11-03 02:10:10,450 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 02:10:10,451 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 1237 mSDsluCounter, 4619 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 5261 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:10,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1237 Valid, 5261 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1022 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-11-03 02:10:10,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38294 states. [2022-11-03 02:10:12,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38294 to 38290. [2022-11-03 02:10:12,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38290 states, 23926 states have (on average 1.2682855471035694) internal successors, (30345), 24704 states have internal predecessors, (30345), 11040 states have call successors, (11040), 3422 states have call predecessors, (11040), 3321 states have return successors, (13209), 10495 states have call predecessors, (13209), 11034 states have call successors, (13209) [2022-11-03 02:10:12,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38290 states to 38290 states and 54594 transitions. [2022-11-03 02:10:12,989 INFO L78 Accepts]: Start accepts. Automaton has 38290 states and 54594 transitions. Word has length 210 [2022-11-03 02:10:12,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:12,989 INFO L495 AbstractCegarLoop]: Abstraction has 38290 states and 54594 transitions. [2022-11-03 02:10:12,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:10:12,990 INFO L276 IsEmpty]: Start isEmpty. Operand 38290 states and 54594 transitions. [2022-11-03 02:10:12,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-03 02:10:12,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:12,994 INFO L195 NwaCegarLoop]: trace histogram [17, 10, 10, 10, 10, 10, 10, 7, 7, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:12,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 02:10:12,994 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:10:12,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:12,995 INFO L85 PathProgramCache]: Analyzing trace with hash -24560604, now seen corresponding path program 1 times [2022-11-03 02:10:12,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:12,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594687850] [2022-11-03 02:10:12,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:12,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:13,594 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2022-11-03 02:10:13,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:13,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594687850] [2022-11-03 02:10:13,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594687850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:13,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:10:13,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:10:13,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001847504] [2022-11-03 02:10:13,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:13,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:10:13,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:13,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:10:13,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:10:13,598 INFO L87 Difference]: Start difference. First operand 38290 states and 54594 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 02:10:17,662 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 02:10:21,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:21,231 INFO L93 Difference]: Finished difference Result 88037 states and 124712 transitions. [2022-11-03 02:10:21,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:10:21,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 230 [2022-11-03 02:10:21,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:21,590 INFO L225 Difference]: With dead ends: 88037 [2022-11-03 02:10:21,590 INFO L226 Difference]: Without dead ends: 49829 [2022-11-03 02:10:21,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 02:10:21,673 INFO L413 NwaCegarLoop]: 1461 mSDtfsCounter, 1239 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:21,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 2353 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 509 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-11-03 02:10:21,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49829 states.