./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-qlogic-qla3xxx.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS --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 5663310b82fa3e5d48c5bcacd13ac8ac886029c41a2f8f3bd2b8442c496a9447 --- 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-8393723 [2022-11-19 07:26:58,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:26:58,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:26:58,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:26:58,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:26:58,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:26:58,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:26:58,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:26:58,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:26:58,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:26:58,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:26:58,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:26:58,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:26:58,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:26:58,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:26:58,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:26:58,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:26:58,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:26:58,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:26:58,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:26:58,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:26:58,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:26:58,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:26:58,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:26:58,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:26:58,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:26:58,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:26:58,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:26:58,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:26:58,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:26:58,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:26:58,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:26:58,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:26:58,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:26:58,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:26:58,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:26:58,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:26:58,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:26:58,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:26:58,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:26:58,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:26:58,630 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:26:58,653 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:26:58,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:26:58,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:26:58,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:26:58,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:26:58,656 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:26:58,656 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:26:58,656 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:26:58,657 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:26:58,657 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:26:58,657 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:26:58,657 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:26:58,658 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:26:58,658 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:26:58,658 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:26:58,658 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:26:58,659 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:26:58,659 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:26:58,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:26:58,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:26:58,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:26:58,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:26:58,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:26:58,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:26:58,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:26:58,662 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:26:58,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:26:58,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:26:58,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:26:58,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:26:58,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:26:58,663 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:26:58,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:26:58,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:26:58,664 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:26:58,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:26:58,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:26:58,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:26:58,665 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5663310b82fa3e5d48c5bcacd13ac8ac886029c41a2f8f3bd2b8442c496a9447 [2022-11-19 07:26:58,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:26:58,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:26:58,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:26:58,954 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:26:58,955 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:26:58,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i [2022-11-19 07:26:59,036 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/data/833e2a2de/b8e10067c8934a18b15fe55a698fa770/FLAG42995bdf0 [2022-11-19 07:27:00,049 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:27:00,050 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i [2022-11-19 07:27:00,123 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/data/833e2a2de/b8e10067c8934a18b15fe55a698fa770/FLAG42995bdf0 [2022-11-19 07:27:00,405 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/data/833e2a2de/b8e10067c8934a18b15fe55a698fa770 [2022-11-19 07:27:00,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:27:00,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:27:00,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:27:00,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:27:00,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:27:00,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:27:00" (1/1) ... [2022-11-19 07:27:00,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ddf9ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:00, skipping insertion in model container [2022-11-19 07:27:00,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:27:00" (1/1) ... [2022-11-19 07:27:00,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:27:00,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:27:04,968 WARN L234 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[408897,408910] [2022-11-19 07:27:04,972 WARN L234 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[409066,409079] [2022-11-19 07:27:04,973 WARN L234 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[409233,409246] [2022-11-19 07:27:04,974 WARN L234 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[409401,409414] [2022-11-19 07:27:05,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:27:05,060 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:27:05,533 WARN L234 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[408897,408910] [2022-11-19 07:27:05,533 WARN L234 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[409066,409079] [2022-11-19 07:27:05,534 WARN L234 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[409233,409246] [2022-11-19 07:27:05,535 WARN L234 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[409401,409414] [2022-11-19 07:27:05,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:27:05,808 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:27:05,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:05 WrapperNode [2022-11-19 07:27:05,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:27:05,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:27:05,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:27:05,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:27:05,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:05" (1/1) ... [2022-11-19 07:27:05,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:05" (1/1) ... [2022-11-19 07:27:06,270 INFO L138 Inliner]: procedures = 572, calls = 2987, calls flagged for inlining = 287, calls inlined = 255, statements flattened = 6609 [2022-11-19 07:27:06,272 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:27:06,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:27:06,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:27:06,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:27:06,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:05" (1/1) ... [2022-11-19 07:27:06,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:05" (1/1) ... [2022-11-19 07:27:06,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:05" (1/1) ... [2022-11-19 07:27:06,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:05" (1/1) ... [2022-11-19 07:27:06,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:05" (1/1) ... [2022-11-19 07:27:06,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:05" (1/1) ... [2022-11-19 07:27:06,633 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:05" (1/1) ... [2022-11-19 07:27:06,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:05" (1/1) ... [2022-11-19 07:27:06,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:27:06,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:27:06,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:27:06,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:27:06,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:05" (1/1) ... [2022-11-19 07:27:06,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:27:06,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:27:06,760 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:27:06,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:27:06,806 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_link_speed [2022-11-19 07:27:06,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_link_speed [2022-11-19 07:27:06,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_hw_lock_of_ql3_adapter [2022-11-19 07:27:06,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_hw_lock_of_ql3_adapter [2022-11-19 07:27:06,806 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-19 07:27:06,807 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-19 07:27:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:27:06,807 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:27:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-19 07:27:06,807 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-19 07:27:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2022-11-19 07:27:06,807 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2022-11-19 07:27:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure ql3xxx_close [2022-11-19 07:27:06,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ql3xxx_close [2022-11-19 07:27:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:27:06,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:27:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-19 07:27:06,808 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-19 07:27:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2022-11-19 07:27:06,809 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2022-11-19 07:27:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 07:27:06,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 07:27:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure ql_this_adapter_controls_port [2022-11-19 07:27:06,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_this_adapter_controls_port [2022-11-19 07:27:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure ql_enable_interrupts [2022-11-19 07:27:06,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_enable_interrupts [2022-11-19 07:27:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 07:27:06,810 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 07:27:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 07:27:06,810 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 07:27:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2022-11-19 07:27:06,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2022-11-19 07:27:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_common_reg_l [2022-11-19 07:27:06,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_common_reg_l [2022-11-19 07:27:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_send_free_list [2022-11-19 07:27:06,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_send_free_list [2022-11-19 07:27:06,812 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-19 07:27:06,812 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-19 07:27:06,812 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 07:27:06,812 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 07:27:06,813 INFO L130 BoogieDeclarations]: Found specification of procedure ssleep [2022-11-19 07:27:06,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ssleep [2022-11-19 07:27:06,814 INFO L130 BoogieDeclarations]: Found specification of procedure ql_cycle_adapter [2022-11-19 07:27:06,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_cycle_adapter [2022-11-19 07:27:06,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 07:27:06,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 07:27:06,815 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mac_cfg_soft_reset [2022-11-19 07:27:06,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mac_cfg_soft_reset [2022-11-19 07:27:06,815 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 07:27:06,816 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 07:27:06,816 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-19 07:27:06,816 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-19 07:27:06,816 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_disable_scan_mode [2022-11-19 07:27:06,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_disable_scan_mode [2022-11-19 07:27:06,817 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 07:27:06,817 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 07:27:06,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 07:27:06,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 07:27:06,817 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-19 07:27:06,818 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-19 07:27:06,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:27:06,818 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-19 07:27:06,818 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-19 07:27:06,819 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_page0_reg_l [2022-11-19 07:27:06,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_page0_reg_l [2022-11-19 07:27:06,819 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_up [2022-11-19 07:27:06,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_up [2022-11-19 07:27:06,820 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 07:27:06,820 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 07:27:06,820 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2022-11-19 07:27:06,820 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2022-11-19 07:27:06,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:27:06,821 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 07:27:06,821 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 07:27:06,821 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 07:27:06,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 07:27:06,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:27:06,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 07:27:06,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 07:27:06,823 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page1_reg [2022-11-19 07:27:06,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page1_reg [2022-11-19 07:27:06,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:27:06,824 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 07:27:06,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 07:27:06,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:27:06,825 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:27:06,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-19 07:27:06,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-19 07:27:06,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 07:27:06,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 07:27:06,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 07:27:06,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 07:27:06,826 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2022-11-19 07:27:06,826 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2022-11-19 07:27:06,826 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-19 07:27:06,826 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-19 07:27:06,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_hw_lock_of_ql3_adapter [2022-11-19 07:27:06,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_hw_lock_of_ql3_adapter [2022-11-19 07:27:06,827 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_register_page [2022-11-19 07:27:06,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_register_page [2022-11-19 07:27:06,828 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-19 07:27:06,828 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-19 07:27:06,828 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_read_reg_ex [2022-11-19 07:27:06,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_read_reg_ex [2022-11-19 07:27:06,829 INFO L130 BoogieDeclarations]: Found specification of procedure ql_phy_init_ex [2022-11-19 07:27:06,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_phy_init_ex [2022-11-19 07:27:06,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 07:27:06,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 07:27:06,832 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_common_reg_l [2022-11-19 07:27:06,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_common_reg_l [2022-11-19 07:27:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:27:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_common_reg [2022-11-19 07:27:06,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_common_reg [2022-11-19 07:27:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-19 07:27:06,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-19 07:27:06,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-19 07:27:06,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-19 07:27:06,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-19 07:27:06,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-19 07:27:06,842 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_spinlock [2022-11-19 07:27:06,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_spinlock [2022-11-19 07:27:06,843 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page2_reg [2022-11-19 07:27:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page2_reg [2022-11-19 07:27:06,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:27:06,843 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_common_reg [2022-11-19 07:27:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_common_reg [2022-11-19 07:27:06,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 07:27:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 07:27:06,843 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 07:27:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 07:27:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:27:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_read_reg [2022-11-19 07:27:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_read_reg [2022-11-19 07:27:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:27:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:27:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_unlock [2022-11-19 07:27:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_unlock [2022-11-19 07:27:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 07:27:06,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 07:27:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-19 07:27:06,845 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-19 07:27:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_nvram_reg [2022-11-19 07:27:06,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_nvram_reg [2022-11-19 07:27:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-19 07:27:06,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-19 07:27:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-19 07:27:06,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-19 07:27:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-19 07:27:06,846 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-19 07:27:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 07:27:06,846 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 07:27:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_for_drvr_lock [2022-11-19 07:27:06,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_for_drvr_lock [2022-11-19 07:27:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-19 07:27:06,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-19 07:27:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-11-19 07:27:06,847 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-11-19 07:27:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_enable_scan_mode [2022-11-19 07:27:06,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_enable_scan_mode [2022-11-19 07:27:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2022-11-19 07:27:06,848 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2022-11-19 07:27:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-19 07:27:06,848 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-19 07:27:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 07:27:06,848 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 07:27:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:27:06,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:27:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_for_mii_ready [2022-11-19 07:27:06,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_for_mii_ready [2022-11-19 07:27:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 07:27:06,849 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 07:27:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_large_buffers [2022-11-19 07:27:06,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_large_buffers [2022-11-19 07:27:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:27:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:27:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:27:06,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:27:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-19 07:27:06,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-19 07:27:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 07:27:06,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 07:27:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 07:27:06,850 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 07:27:06,851 INFO L130 BoogieDeclarations]: Found specification of procedure ql_disable_interrupts [2022-11-19 07:27:06,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_disable_interrupts [2022-11-19 07:27:06,851 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-19 07:27:06,851 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-19 07:27:06,851 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-19 07:27:06,851 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-19 07:27:06,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-19 07:27:06,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-19 07:27:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_page0_reg [2022-11-19 07:27:06,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_page0_reg [2022-11-19 07:27:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-19 07:27:06,852 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-19 07:27:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure PHY_Setup [2022-11-19 07:27:06,852 INFO L138 BoogieDeclarations]: Found implementation of procedure PHY_Setup [2022-11-19 07:27:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:27:06,853 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:27:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_buffer_queues [2022-11-19 07:27:06,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_buffer_queues [2022-11-19 07:27:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 07:27:06,853 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 07:27:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-19 07:27:06,853 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-19 07:27:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-19 07:27:06,854 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-19 07:27:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure ql3xxx_remove [2022-11-19 07:27:06,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ql3xxx_remove [2022-11-19 07:27:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-19 07:27:06,854 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-19 07:27:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-19 07:27:06,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-19 07:27:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:27:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 07:27:06,855 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 07:27:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:27:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:27:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-19 07:27:06,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-19 07:27:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-19 07:27:06,856 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-19 07:27:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 07:27:06,856 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 07:27:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 07:27:06,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 07:27:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-19 07:27:06,856 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-19 07:27:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page0_reg [2022-11-19 07:27:06,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page0_reg [2022-11-19 07:27:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-19 07:27:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-19 07:27:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-19 07:27:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-19 07:27:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure ql_is_link_full_dup [2022-11-19 07:27:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_is_link_full_dup [2022-11-19 07:27:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure ql3xxx_open [2022-11-19 07:27:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ql3xxx_open [2022-11-19 07:27:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 07:27:06,863 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 07:27:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure ql3xxx_tx_timeout [2022-11-19 07:27:06,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ql3xxx_tx_timeout [2022-11-19 07:27:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure ql_supported_modes [2022-11-19 07:27:06,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_supported_modes [2022-11-19 07:27:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-11-19 07:27:06,865 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-11-19 07:27:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 07:27:06,865 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 07:27:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure ql_is_fiber [2022-11-19 07:27:06,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_is_fiber [2022-11-19 07:27:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-19 07:27:06,866 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-19 07:27:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:27:06,866 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:27:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_net_req_rsp_queues [2022-11-19 07:27:06,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_net_req_rsp_queues [2022-11-19 07:27:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:27:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:27:06,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:27:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_write_reg_ex [2022-11-19 07:27:06,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_write_reg_ex [2022-11-19 07:27:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_down [2022-11-19 07:27:06,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_down [2022-11-19 07:27:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 07:27:06,867 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 07:27:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure ql_port_start [2022-11-19 07:27:06,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_port_start [2022-11-19 07:27:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-19 07:27:06,868 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-19 07:27:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_auto_cfg_status [2022-11-19 07:27:06,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_auto_cfg_status [2022-11-19 07:27:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_write_reg [2022-11-19 07:27:06,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_write_reg [2022-11-19 07:27:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 07:27:06,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 07:27:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-19 07:27:06,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-19 07:27:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-19 07:27:06,869 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-19 07:27:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-11-19 07:27:06,869 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-11-19 07:27:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-19 07:27:06,869 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-19 07:27:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2022-11-19 07:27:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:27:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_mac_addr [2022-11-19 07:27:06,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_mac_addr [2022-11-19 07:27:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 07:27:06,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 07:27:08,145 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:27:08,149 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:27:08,567 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:27:13,708 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 07:27:13,882 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:27:15,932 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:27:15,932 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:27:15,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:27:15 BoogieIcfgContainer [2022-11-19 07:27:15,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:27:15,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:27:15,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:27:15,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:27:15,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:27:00" (1/3) ... [2022-11-19 07:27:15,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ee8c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:27:15, skipping insertion in model container [2022-11-19 07:27:15,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:05" (2/3) ... [2022-11-19 07:27:15,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ee8c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:27:15, skipping insertion in model container [2022-11-19 07:27:15,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:27:15" (3/3) ... [2022-11-19 07:27:15,961 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i [2022-11-19 07:27:15,983 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:27:15,983 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-19 07:27:16,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:27:16,129 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;@2496251c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:27:16,130 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-19 07:27:16,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 1940 states, 1088 states have (on average 1.255514705882353) internal successors, (1366), 1139 states have internal predecessors, (1366), 714 states have call successors, (714), 136 states have call predecessors, (714), 135 states have return successors, (709), 694 states have call predecessors, (709), 709 states have call successors, (709) [2022-11-19 07:27:16,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-19 07:27:16,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:27:16,167 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:27:16,168 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)] === [2022-11-19 07:27:16,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:27:16,176 INFO L85 PathProgramCache]: Analyzing trace with hash 331350107, now seen corresponding path program 1 times [2022-11-19 07:27:16,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:27:16,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117596840] [2022-11-19 07:27:16,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:27:16,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:27:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:27:17,093 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-19 07:27:17,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:27:17,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117596840] [2022-11-19 07:27:17,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117596840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:27:17,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:27:17,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:27:17,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692580273] [2022-11-19 07:27:17,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:27:17,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:27:17,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:27:17,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:27:17,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:27:17,170 INFO L87 Difference]: Start difference. First operand has 1940 states, 1088 states have (on average 1.255514705882353) internal successors, (1366), 1139 states have internal predecessors, (1366), 714 states have call successors, (714), 136 states have call predecessors, (714), 135 states have return successors, (709), 694 states have call predecessors, (709), 709 states have call successors, (709) Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 07:27:20,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:27:20,673 INFO L93 Difference]: Finished difference Result 5726 states and 8386 transitions. [2022-11-19 07:27:20,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:27:20,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2022-11-19 07:27:20,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:27:20,717 INFO L225 Difference]: With dead ends: 5726 [2022-11-19 07:27:20,718 INFO L226 Difference]: Without dead ends: 3793 [2022-11-19 07:27:20,735 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 [2022-11-19 07:27:20,738 INFO L413 NwaCegarLoop]: 3152 mSDtfsCounter, 2700 mSDsluCounter, 2441 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2700 SdHoareTripleChecker+Valid, 5593 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:27:20,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2700 Valid, 5593 Invalid, 641 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-19 07:27:20,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3793 states. [2022-11-19 07:27:21,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3793 to 3789. [2022-11-19 07:27:21,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3789 states, 2135 states have (on average 1.2515222482435597) internal successors, (2672), 2235 states have internal predecessors, (2672), 1384 states have call successors, (1384), 268 states have call predecessors, (1384), 267 states have return successors, (1381), 1351 states have call predecessors, (1381), 1381 states have call successors, (1381) [2022-11-19 07:27:21,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3789 states to 3789 states and 5437 transitions. [2022-11-19 07:27:21,099 INFO L78 Accepts]: Start accepts. Automaton has 3789 states and 5437 transitions. Word has length 97 [2022-11-19 07:27:21,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:27:21,101 INFO L495 AbstractCegarLoop]: Abstraction has 3789 states and 5437 transitions. [2022-11-19 07:27:21,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 07:27:21,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3789 states and 5437 transitions. [2022-11-19 07:27:21,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-19 07:27:21,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:27:21,115 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:27:21,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:27:21,116 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)] === [2022-11-19 07:27:21,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:27:21,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1422822596, now seen corresponding path program 1 times [2022-11-19 07:27:21,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:27:21,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470313391] [2022-11-19 07:27:21,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:27:21,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:27:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:27:21,935 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-19 07:27:21,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:27:21,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470313391] [2022-11-19 07:27:21,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470313391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:27:21,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:27:21,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:27:21,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607002250] [2022-11-19 07:27:21,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:27:21,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:27:21,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:27:21,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:27:21,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:27:21,944 INFO L87 Difference]: Start difference. First operand 3789 states and 5437 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-19 07:27:30,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:27:30,697 INFO L93 Difference]: Finished difference Result 8368 states and 11879 transitions. [2022-11-19 07:27:30,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:27:30,698 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 102 [2022-11-19 07:27:30,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:27:30,735 INFO L225 Difference]: With dead ends: 8368 [2022-11-19 07:27:30,736 INFO L226 Difference]: Without dead ends: 4596 [2022-11-19 07:27:30,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:27:30,756 INFO L413 NwaCegarLoop]: 3431 mSDtfsCounter, 4659 mSDsluCounter, 5517 mSDsCounter, 0 mSdLazyCounter, 3108 mSolverCounterSat, 1297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4767 SdHoareTripleChecker+Valid, 8948 SdHoareTripleChecker+Invalid, 4405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1297 IncrementalHoareTripleChecker+Valid, 3108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:27:30,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4767 Valid, 8948 Invalid, 4405 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1297 Valid, 3108 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-19 07:27:30,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4596 states. [2022-11-19 07:27:31,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4596 to 4542. [2022-11-19 07:27:31,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4542 states, 2578 states have (on average 1.2428238944918542) internal successors, (3204), 2678 states have internal predecessors, (3204), 1581 states have call successors, (1581), 381 states have call predecessors, (1581), 380 states have return successors, (1578), 1554 states have call predecessors, (1578), 1578 states have call successors, (1578) [2022-11-19 07:27:31,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4542 states to 4542 states and 6363 transitions. [2022-11-19 07:27:31,058 INFO L78 Accepts]: Start accepts. Automaton has 4542 states and 6363 transitions. Word has length 102 [2022-11-19 07:27:31,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:27:31,059 INFO L495 AbstractCegarLoop]: Abstraction has 4542 states and 6363 transitions. [2022-11-19 07:27:31,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-19 07:27:31,060 INFO L276 IsEmpty]: Start isEmpty. Operand 4542 states and 6363 transitions. [2022-11-19 07:27:31,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-19 07:27:31,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:27:31,063 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:27:31,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:27:31,063 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)] === [2022-11-19 07:27:31,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:27:31,073 INFO L85 PathProgramCache]: Analyzing trace with hash -882099349, now seen corresponding path program 1 times [2022-11-19 07:27:31,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:27:31,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843472278] [2022-11-19 07:27:31,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:27:31,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:27:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:27:31,330 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-19 07:27:31,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:27:31,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843472278] [2022-11-19 07:27:31,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843472278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:27:31,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:27:31,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:27:31,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438468485] [2022-11-19 07:27:31,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:27:31,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:27:31,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:27:31,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:27:31,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:27:31,335 INFO L87 Difference]: Start difference. First operand 4542 states and 6363 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-19 07:27:34,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:27:34,899 INFO L93 Difference]: Finished difference Result 12310 states and 17263 transitions. [2022-11-19 07:27:34,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:27:34,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2022-11-19 07:27:34,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:27:34,967 INFO L225 Difference]: With dead ends: 12310 [2022-11-19 07:27:34,967 INFO L226 Difference]: Without dead ends: 7785 [2022-11-19 07:27:34,995 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 [2022-11-19 07:27:34,999 INFO L413 NwaCegarLoop]: 3365 mSDtfsCounter, 2672 mSDsluCounter, 2294 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2672 SdHoareTripleChecker+Valid, 5659 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:27:35,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2672 Valid, 5659 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-19 07:27:35,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7785 states. [2022-11-19 07:27:35,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7785 to 7756. [2022-11-19 07:27:35,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7756 states, 4408 states have (on average 1.243421052631579) internal successors, (5481), 4587 states have internal predecessors, (5481), 2689 states have call successors, (2689), 664 states have call predecessors, (2689), 656 states have return successors, (2705), 2625 states have call predecessors, (2705), 2686 states have call successors, (2705) [2022-11-19 07:27:35,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7756 states to 7756 states and 10875 transitions. [2022-11-19 07:27:35,646 INFO L78 Accepts]: Start accepts. Automaton has 7756 states and 10875 transitions. Word has length 105 [2022-11-19 07:27:35,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:27:35,647 INFO L495 AbstractCegarLoop]: Abstraction has 7756 states and 10875 transitions. [2022-11-19 07:27:35,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-19 07:27:35,648 INFO L276 IsEmpty]: Start isEmpty. Operand 7756 states and 10875 transitions. [2022-11-19 07:27:35,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-19 07:27:35,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:27:35,656 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:27:35,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:27:35,657 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)] === [2022-11-19 07:27:35,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:27:35,658 INFO L85 PathProgramCache]: Analyzing trace with hash -771923473, now seen corresponding path program 1 times [2022-11-19 07:27:35,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:27:35,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942395238] [2022-11-19 07:27:35,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:27:35,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:27:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:27:35,893 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-19 07:27:35,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:27:35,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942395238] [2022-11-19 07:27:35,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942395238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:27:35,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:27:35,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:27:35,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226561826] [2022-11-19 07:27:35,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:27:35,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:27:35,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:27:35,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:27:35,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:27:35,896 INFO L87 Difference]: Start difference. First operand 7756 states and 10875 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (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) [2022-11-19 07:27:39,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:27:39,012 INFO L93 Difference]: Finished difference Result 20270 states and 28479 transitions. [2022-11-19 07:27:39,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:27:39,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (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 117 [2022-11-19 07:27:39,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:27:39,110 INFO L225 Difference]: With dead ends: 20270 [2022-11-19 07:27:39,110 INFO L226 Difference]: Without dead ends: 12531 [2022-11-19 07:27:39,154 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 [2022-11-19 07:27:39,158 INFO L413 NwaCegarLoop]: 3071 mSDtfsCounter, 2399 mSDsluCounter, 2405 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2399 SdHoareTripleChecker+Valid, 5476 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:27:39,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2399 Valid, 5476 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-19 07:27:39,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12531 states. [2022-11-19 07:27:39,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12531 to 12501. [2022-11-19 07:27:39,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12501 states, 7075 states have (on average 1.2364664310954063) internal successors, (8748), 7418 states have internal predecessors, (8748), 4385 states have call successors, (4385), 1055 states have call predecessors, (4385), 1038 states have return successors, (4422), 4253 states have call predecessors, (4422), 4382 states have call successors, (4422) [2022-11-19 07:27:40,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12501 states to 12501 states and 17555 transitions. [2022-11-19 07:27:40,032 INFO L78 Accepts]: Start accepts. Automaton has 12501 states and 17555 transitions. Word has length 117 [2022-11-19 07:27:40,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:27:40,033 INFO L495 AbstractCegarLoop]: Abstraction has 12501 states and 17555 transitions. [2022-11-19 07:27:40,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (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) [2022-11-19 07:27:40,034 INFO L276 IsEmpty]: Start isEmpty. Operand 12501 states and 17555 transitions. [2022-11-19 07:27:40,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-19 07:27:40,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:27:40,037 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:27:40,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:27:40,038 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:27:40,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:27:40,038 INFO L85 PathProgramCache]: Analyzing trace with hash 274386446, now seen corresponding path program 1 times [2022-11-19 07:27:40,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:27:40,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497721564] [2022-11-19 07:27:40,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:27:40,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:27:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:27:40,571 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-11-19 07:27:40,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:27:40,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497721564] [2022-11-19 07:27:40,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497721564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:27:40,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:27:40,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:27:40,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678573492] [2022-11-19 07:27:40,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:27:40,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:27:40,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:27:40,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:27:40,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:27:40,575 INFO L87 Difference]: Start difference. First operand 12501 states and 17555 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:27:44,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:27:44,819 INFO L93 Difference]: Finished difference Result 12507 states and 17560 transitions. [2022-11-19 07:27:44,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:27:44,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 135 [2022-11-19 07:27:44,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:27:44,894 INFO L225 Difference]: With dead ends: 12507 [2022-11-19 07:27:44,895 INFO L226 Difference]: Without dead ends: 12505 [2022-11-19 07:27:44,904 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 [2022-11-19 07:27:44,905 INFO L413 NwaCegarLoop]: 2448 mSDtfsCounter, 2725 mSDsluCounter, 4882 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2737 SdHoareTripleChecker+Valid, 7330 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:27:44,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2737 Valid, 7330 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-19 07:27:44,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12505 states. [2022-11-19 07:27:45,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12505 to 12505. [2022-11-19 07:27:45,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12505 states, 7078 states have (on average 1.2363662051426956) internal successors, (8751), 7421 states have internal predecessors, (8751), 4385 states have call successors, (4385), 1056 states have call predecessors, (4385), 1039 states have return successors, (4422), 4253 states have call predecessors, (4422), 4382 states have call successors, (4422) [2022-11-19 07:27:45,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12505 states to 12505 states and 17558 transitions. [2022-11-19 07:27:45,872 INFO L78 Accepts]: Start accepts. Automaton has 12505 states and 17558 transitions. Word has length 135 [2022-11-19 07:27:45,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:27:45,874 INFO L495 AbstractCegarLoop]: Abstraction has 12505 states and 17558 transitions. [2022-11-19 07:27:45,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:27:45,875 INFO L276 IsEmpty]: Start isEmpty. Operand 12505 states and 17558 transitions. [2022-11-19 07:27:45,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-19 07:27:45,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:27:45,879 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 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] [2022-11-19 07:27:45,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:27:45,880 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)] === [2022-11-19 07:27:45,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:27:45,880 INFO L85 PathProgramCache]: Analyzing trace with hash -831472069, now seen corresponding path program 1 times [2022-11-19 07:27:45,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:27:45,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487222478] [2022-11-19 07:27:45,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:27:45,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:27:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:27:46,495 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-11-19 07:27:46,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:27:46,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487222478] [2022-11-19 07:27:46,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487222478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:27:46,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:27:46,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:27:46,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879321753] [2022-11-19 07:27:46,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:27:46,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:27:46,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:27:46,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:27:46,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:27:46,498 INFO L87 Difference]: Start difference. First operand 12505 states and 17558 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:27:50,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:27:50,633 INFO L93 Difference]: Finished difference Result 12947 states and 18023 transitions. [2022-11-19 07:27:50,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:27:50,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 140 [2022-11-19 07:27:50,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:27:50,703 INFO L225 Difference]: With dead ends: 12947 [2022-11-19 07:27:50,704 INFO L226 Difference]: Without dead ends: 12945 [2022-11-19 07:27:50,711 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 [2022-11-19 07:27:50,713 INFO L413 NwaCegarLoop]: 2484 mSDtfsCounter, 2689 mSDsluCounter, 5055 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2700 SdHoareTripleChecker+Valid, 7539 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:27:50,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2700 Valid, 7539 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-19 07:27:50,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12945 states. [2022-11-19 07:27:51,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12945 to 12941. [2022-11-19 07:27:51,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12941 states, 7293 states have (on average 1.2326888797477034) internal successors, (8990), 7648 states have internal predecessors, (8990), 4496 states have call successors, (4496), 1166 states have call predecessors, (4496), 1149 states have return successors, (4533), 4364 states have call predecessors, (4533), 4493 states have call successors, (4533) [2022-11-19 07:27:51,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12941 states to 12941 states and 18019 transitions. [2022-11-19 07:27:51,548 INFO L78 Accepts]: Start accepts. Automaton has 12941 states and 18019 transitions. Word has length 140 [2022-11-19 07:27:51,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:27:51,549 INFO L495 AbstractCegarLoop]: Abstraction has 12941 states and 18019 transitions. [2022-11-19 07:27:51,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:27:51,549 INFO L276 IsEmpty]: Start isEmpty. Operand 12941 states and 18019 transitions. [2022-11-19 07:27:51,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-19 07:27:51,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:27:51,553 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 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] [2022-11-19 07:27:51,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:27:51,554 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)] === [2022-11-19 07:27:51,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:27:51,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1836579310, now seen corresponding path program 1 times [2022-11-19 07:27:51,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:27:51,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470847352] [2022-11-19 07:27:51,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:27:51,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:27:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:27:52,075 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-11-19 07:27:52,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:27:52,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470847352] [2022-11-19 07:27:52,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470847352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:27:52,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:27:52,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:27:52,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797229824] [2022-11-19 07:27:52,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:27:52,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:27:52,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:27:52,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:27:52,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:27:52,079 INFO L87 Difference]: Start difference. First operand 12941 states and 18019 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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) [2022-11-19 07:27:55,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:27:57,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:27:57,593 INFO L93 Difference]: Finished difference Result 12947 states and 18024 transitions. [2022-11-19 07:27:57,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:27:57,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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 145 [2022-11-19 07:27:57,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:27:57,674 INFO L225 Difference]: With dead ends: 12947 [2022-11-19 07:27:57,675 INFO L226 Difference]: Without dead ends: 12945 [2022-11-19 07:27:57,687 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 [2022-11-19 07:27:57,688 INFO L413 NwaCegarLoop]: 2451 mSDtfsCounter, 2720 mSDsluCounter, 4882 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2730 SdHoareTripleChecker+Valid, 7333 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:27:57,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2730 Valid, 7333 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-19 07:27:57,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12945 states. [2022-11-19 07:27:58,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12945 to 12945. [2022-11-19 07:27:58,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12945 states, 7296 states have (on average 1.232593201754386) internal successors, (8993), 7651 states have internal predecessors, (8993), 4496 states have call successors, (4496), 1167 states have call predecessors, (4496), 1150 states have return successors, (4533), 4364 states have call predecessors, (4533), 4493 states have call successors, (4533) [2022-11-19 07:27:58,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12945 states to 12945 states and 18022 transitions. [2022-11-19 07:27:58,750 INFO L78 Accepts]: Start accepts. Automaton has 12945 states and 18022 transitions. Word has length 145 [2022-11-19 07:27:58,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:27:58,753 INFO L495 AbstractCegarLoop]: Abstraction has 12945 states and 18022 transitions. [2022-11-19 07:27:58,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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) [2022-11-19 07:27:58,753 INFO L276 IsEmpty]: Start isEmpty. Operand 12945 states and 18022 transitions. [2022-11-19 07:27:58,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-19 07:27:58,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:27:58,756 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 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] [2022-11-19 07:27:58,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:27:58,757 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)] === [2022-11-19 07:27:58,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:27:58,757 INFO L85 PathProgramCache]: Analyzing trace with hash 592962999, now seen corresponding path program 1 times [2022-11-19 07:27:58,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:27:58,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373391653] [2022-11-19 07:27:58,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:27:58,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:27:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:27:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2022-11-19 07:27:59,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:27:59,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373391653] [2022-11-19 07:27:59,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373391653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:27:59,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:27:59,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:27:59,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436701571] [2022-11-19 07:27:59,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:27:59,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:27:59,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:27:59,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:27:59,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:27:59,357 INFO L87 Difference]: Start difference. First operand 12945 states and 18022 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 07:28:03,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:03,793 INFO L93 Difference]: Finished difference Result 12951 states and 18027 transitions. [2022-11-19 07:28:03,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:28:03,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 159 [2022-11-19 07:28:03,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:03,868 INFO L225 Difference]: With dead ends: 12951 [2022-11-19 07:28:03,868 INFO L226 Difference]: Without dead ends: 12949 [2022-11-19 07:28:03,882 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 [2022-11-19 07:28:03,883 INFO L413 NwaCegarLoop]: 2451 mSDtfsCounter, 2716 mSDsluCounter, 4882 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2725 SdHoareTripleChecker+Valid, 7333 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:03,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2725 Valid, 7333 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-19 07:28:03,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12949 states. [2022-11-19 07:28:04,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12949 to 12949. [2022-11-19 07:28:04,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12949 states, 7299 states have (on average 1.2324976024112893) internal successors, (8996), 7654 states have internal predecessors, (8996), 4496 states have call successors, (4496), 1168 states have call predecessors, (4496), 1151 states have return successors, (4533), 4364 states have call predecessors, (4533), 4493 states have call successors, (4533) [2022-11-19 07:28:04,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12949 states to 12949 states and 18025 transitions. [2022-11-19 07:28:04,991 INFO L78 Accepts]: Start accepts. Automaton has 12949 states and 18025 transitions. Word has length 159 [2022-11-19 07:28:04,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:04,992 INFO L495 AbstractCegarLoop]: Abstraction has 12949 states and 18025 transitions. [2022-11-19 07:28:04,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 07:28:04,992 INFO L276 IsEmpty]: Start isEmpty. Operand 12949 states and 18025 transitions. [2022-11-19 07:28:04,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-19 07:28:04,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:04,995 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 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] [2022-11-19 07:28:04,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:28:04,996 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)] === [2022-11-19 07:28:04,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:04,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1628865074, now seen corresponding path program 1 times [2022-11-19 07:28:04,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:04,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011206444] [2022-11-19 07:28:04,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:04,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:05,448 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-11-19 07:28:05,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:05,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011206444] [2022-11-19 07:28:05,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011206444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:28:05,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:28:05,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:28:05,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120121608] [2022-11-19 07:28:05,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:28:05,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:28:05,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:05,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:28:05,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:28:05,452 INFO L87 Difference]: Start difference. First operand 12949 states and 18025 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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) [2022-11-19 07:28:07,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:28:10,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:10,700 INFO L93 Difference]: Finished difference Result 13256 states and 18277 transitions. [2022-11-19 07:28:10,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:28:10,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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 155 [2022-11-19 07:28:10,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:10,764 INFO L225 Difference]: With dead ends: 13256 [2022-11-19 07:28:10,765 INFO L226 Difference]: Without dead ends: 13254 [2022-11-19 07:28:10,777 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 [2022-11-19 07:28:10,778 INFO L413 NwaCegarLoop]: 2472 mSDtfsCounter, 1612 mSDsluCounter, 5976 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 8448 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:10,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1620 Valid, 8448 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-19 07:28:10,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13254 states. [2022-11-19 07:28:11,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13254 to 13252. [2022-11-19 07:28:11,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13252 states, 7462 states have (on average 1.2292950951487538) internal successors, (9173), 7825 states have internal predecessors, (9173), 4532 states have call successors, (4532), 1272 states have call predecessors, (4532), 1255 states have return successors, (4569), 4400 states have call predecessors, (4569), 4529 states have call successors, (4569) [2022-11-19 07:28:11,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13252 states to 13252 states and 18274 transitions. [2022-11-19 07:28:11,909 INFO L78 Accepts]: Start accepts. Automaton has 13252 states and 18274 transitions. Word has length 155 [2022-11-19 07:28:11,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:11,910 INFO L495 AbstractCegarLoop]: Abstraction has 13252 states and 18274 transitions. [2022-11-19 07:28:11,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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) [2022-11-19 07:28:11,911 INFO L276 IsEmpty]: Start isEmpty. Operand 13252 states and 18274 transitions. [2022-11-19 07:28:11,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-19 07:28:11,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:11,914 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 6, 6, 6, 5, 5, 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] [2022-11-19 07:28:11,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:28:11,915 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)] === [2022-11-19 07:28:11,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:11,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1293362601, now seen corresponding path program 1 times [2022-11-19 07:28:11,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:11,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993755796] [2022-11-19 07:28:11,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:11,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:12,359 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2022-11-19 07:28:12,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:12,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993755796] [2022-11-19 07:28:12,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993755796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:28:12,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:28:12,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:28:12,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320059763] [2022-11-19 07:28:12,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:28:12,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:28:12,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:12,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:28:12,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:28:12,362 INFO L87 Difference]: Start difference. First operand 13252 states and 18274 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) [2022-11-19 07:28:17,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:17,093 INFO L93 Difference]: Finished difference Result 13258 states and 18279 transitions. [2022-11-19 07:28:17,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:28:17,094 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 169 [2022-11-19 07:28:17,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:17,151 INFO L225 Difference]: With dead ends: 13258 [2022-11-19 07:28:17,151 INFO L226 Difference]: Without dead ends: 13256 [2022-11-19 07:28:17,159 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 [2022-11-19 07:28:17,159 INFO L413 NwaCegarLoop]: 2451 mSDtfsCounter, 2716 mSDsluCounter, 4882 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2723 SdHoareTripleChecker+Valid, 7333 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:17,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2723 Valid, 7333 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-19 07:28:17,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13256 states. [2022-11-19 07:28:17,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13256 to 13256. [2022-11-19 07:28:17,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13256 states, 7465 states have (on average 1.2292029470864032) internal successors, (9176), 7828 states have internal predecessors, (9176), 4532 states have call successors, (4532), 1273 states have call predecessors, (4532), 1256 states have return successors, (4569), 4400 states have call predecessors, (4569), 4529 states have call successors, (4569) [2022-11-19 07:28:18,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13256 states to 13256 states and 18277 transitions. [2022-11-19 07:28:18,048 INFO L78 Accepts]: Start accepts. Automaton has 13256 states and 18277 transitions. Word has length 169 [2022-11-19 07:28:18,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:18,049 INFO L495 AbstractCegarLoop]: Abstraction has 13256 states and 18277 transitions. [2022-11-19 07:28:18,049 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) [2022-11-19 07:28:18,049 INFO L276 IsEmpty]: Start isEmpty. Operand 13256 states and 18277 transitions. [2022-11-19 07:28:18,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-19 07:28:18,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:18,052 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:28:18,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:28:18,053 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)] === [2022-11-19 07:28:18,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:18,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1947373998, now seen corresponding path program 1 times [2022-11-19 07:28:18,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:18,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623649330] [2022-11-19 07:28:18,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:18,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:18,499 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2022-11-19 07:28:18,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:18,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623649330] [2022-11-19 07:28:18,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623649330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:28:18,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:28:18,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:28:18,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210612183] [2022-11-19 07:28:18,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:28:18,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:28:18,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:18,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:28:18,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:28:18,503 INFO L87 Difference]: Start difference. First operand 13256 states and 18277 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) [2022-11-19 07:28:21,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:28:23,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:23,713 INFO L93 Difference]: Finished difference Result 13262 states and 18282 transitions. [2022-11-19 07:28:23,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:28:23,715 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 174 [2022-11-19 07:28:23,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:23,769 INFO L225 Difference]: With dead ends: 13262 [2022-11-19 07:28:23,769 INFO L226 Difference]: Without dead ends: 13260 [2022-11-19 07:28:23,776 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 [2022-11-19 07:28:23,776 INFO L413 NwaCegarLoop]: 2451 mSDtfsCounter, 2716 mSDsluCounter, 4882 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2722 SdHoareTripleChecker+Valid, 7333 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:23,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2722 Valid, 7333 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-19 07:28:23,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13260 states. [2022-11-19 07:28:24,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13260 to 13260. [2022-11-19 07:28:24,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13260 states, 7468 states have (on average 1.2291108730583824) internal successors, (9179), 7831 states have internal predecessors, (9179), 4532 states have call successors, (4532), 1274 states have call predecessors, (4532), 1257 states have return successors, (4569), 4400 states have call predecessors, (4569), 4529 states have call successors, (4569) [2022-11-19 07:28:24,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13260 states to 13260 states and 18280 transitions. [2022-11-19 07:28:24,784 INFO L78 Accepts]: Start accepts. Automaton has 13260 states and 18280 transitions. Word has length 174 [2022-11-19 07:28:24,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:24,785 INFO L495 AbstractCegarLoop]: Abstraction has 13260 states and 18280 transitions. [2022-11-19 07:28:24,785 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) [2022-11-19 07:28:24,785 INFO L276 IsEmpty]: Start isEmpty. Operand 13260 states and 18280 transitions. [2022-11-19 07:28:24,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-19 07:28:24,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:24,789 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 8, 7, 7, 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] [2022-11-19 07:28:24,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 07:28:24,790 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)] === [2022-11-19 07:28:24,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:24,790 INFO L85 PathProgramCache]: Analyzing trace with hash -994114277, now seen corresponding path program 1 times [2022-11-19 07:28:24,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:24,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244768579] [2022-11-19 07:28:24,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:24,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2022-11-19 07:28:25,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:25,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244768579] [2022-11-19 07:28:25,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244768579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:28:25,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:28:25,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:28:25,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382490522] [2022-11-19 07:28:25,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:28:25,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:28:25,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:25,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:28:25,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:28:25,225 INFO L87 Difference]: Start difference. First operand 13260 states and 18280 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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) [2022-11-19 07:28:29,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:29,575 INFO L93 Difference]: Finished difference Result 13266 states and 18285 transitions. [2022-11-19 07:28:29,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:28:29,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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 170 [2022-11-19 07:28:29,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:29,621 INFO L225 Difference]: With dead ends: 13266 [2022-11-19 07:28:29,621 INFO L226 Difference]: Without dead ends: 13264 [2022-11-19 07:28:29,629 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 [2022-11-19 07:28:29,629 INFO L413 NwaCegarLoop]: 2451 mSDtfsCounter, 2720 mSDsluCounter, 4882 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2725 SdHoareTripleChecker+Valid, 7333 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:29,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2725 Valid, 7333 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-19 07:28:29,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13264 states. [2022-11-19 07:28:30,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13264 to 13264. [2022-11-19 07:28:30,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13264 states, 7471 states have (on average 1.2290188729755054) internal successors, (9182), 7834 states have internal predecessors, (9182), 4532 states have call successors, (4532), 1275 states have call predecessors, (4532), 1258 states have return successors, (4569), 4400 states have call predecessors, (4569), 4529 states have call successors, (4569) [2022-11-19 07:28:30,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13264 states to 13264 states and 18283 transitions. [2022-11-19 07:28:30,784 INFO L78 Accepts]: Start accepts. Automaton has 13264 states and 18283 transitions. Word has length 170 [2022-11-19 07:28:30,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:30,784 INFO L495 AbstractCegarLoop]: Abstraction has 13264 states and 18283 transitions. [2022-11-19 07:28:30,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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) [2022-11-19 07:28:30,784 INFO L276 IsEmpty]: Start isEmpty. Operand 13264 states and 18283 transitions. [2022-11-19 07:28:30,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-19 07:28:30,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:30,789 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 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] [2022-11-19 07:28:30,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 07:28:30,790 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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)] === [2022-11-19 07:28:30,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:30,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1308612343, now seen corresponding path program 1 times [2022-11-19 07:28:30,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:30,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250844401] [2022-11-19 07:28:30,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:30,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2022-11-19 07:28:31,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:31,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250844401] [2022-11-19 07:28:31,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250844401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:28:31,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:28:31,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:28:31,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483354323] [2022-11-19 07:28:31,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:28:31,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:28:31,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:31,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:28:31,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:28:31,050 INFO L87 Difference]: Start difference. First operand 13264 states and 18283 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-19 07:28:34,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:34,640 INFO L93 Difference]: Finished difference Result 28248 states and 38812 transitions. [2022-11-19 07:28:34,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:28:34,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 168 [2022-11-19 07:28:34,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:34,693 INFO L225 Difference]: With dead ends: 28248 [2022-11-19 07:28:34,694 INFO L226 Difference]: Without dead ends: 15054 [2022-11-19 07:28:34,734 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 [2022-11-19 07:28:34,735 INFO L413 NwaCegarLoop]: 3165 mSDtfsCounter, 893 mSDsluCounter, 2410 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 5575 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:34,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 5575 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-19 07:28:34,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15054 states. [2022-11-19 07:28:35,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15054 to 14993. [2022-11-19 07:28:35,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14993 states, 8473 states have (on average 1.2264841260474448) internal successors, (10392), 8866 states have internal predecessors, (10392), 5034 states have call successors, (5034), 1500 states have call predecessors, (5034), 1483 states have return successors, (5071), 4890 states have call predecessors, (5071), 5031 states have call successors, (5071) [2022-11-19 07:28:35,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14993 states to 14993 states and 20497 transitions. [2022-11-19 07:28:35,736 INFO L78 Accepts]: Start accepts. Automaton has 14993 states and 20497 transitions. Word has length 168 [2022-11-19 07:28:35,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:35,737 INFO L495 AbstractCegarLoop]: Abstraction has 14993 states and 20497 transitions. [2022-11-19 07:28:35,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-19 07:28:35,737 INFO L276 IsEmpty]: Start isEmpty. Operand 14993 states and 20497 transitions. [2022-11-19 07:28:35,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-19 07:28:35,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:35,739 INFO L195 NwaCegarLoop]: trace histogram [12, 9, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:28:35,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 07:28:35,740 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:28:35,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:35,740 INFO L85 PathProgramCache]: Analyzing trace with hash 705793422, now seen corresponding path program 1 times [2022-11-19 07:28:35,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:35,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737937731] [2022-11-19 07:28:35,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:35,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:36,130 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2022-11-19 07:28:36,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:36,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737937731] [2022-11-19 07:28:36,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737937731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:28:36,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:28:36,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:28:36,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554063101] [2022-11-19 07:28:36,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:28:36,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:28:36,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:36,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:28:36,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:28:36,133 INFO L87 Difference]: Start difference. First operand 14993 states and 20497 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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) [2022-11-19 07:28:39,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:39,784 INFO L93 Difference]: Finished difference Result 14999 states and 20502 transitions. [2022-11-19 07:28:39,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:28:39,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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 175 [2022-11-19 07:28:39,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:39,827 INFO L225 Difference]: With dead ends: 14999 [2022-11-19 07:28:39,827 INFO L226 Difference]: Without dead ends: 14997 [2022-11-19 07:28:39,834 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 [2022-11-19 07:28:39,835 INFO L413 NwaCegarLoop]: 2451 mSDtfsCounter, 2720 mSDsluCounter, 4882 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2724 SdHoareTripleChecker+Valid, 7333 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:39,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2724 Valid, 7333 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-19 07:28:39,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14997 states. [2022-11-19 07:28:40,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14997 to 14997. [2022-11-19 07:28:40,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14997 states, 8476 states have (on average 1.2264039641340254) internal successors, (10395), 8869 states have internal predecessors, (10395), 5034 states have call successors, (5034), 1501 states have call predecessors, (5034), 1484 states have return successors, (5071), 4890 states have call predecessors, (5071), 5031 states have call successors, (5071) [2022-11-19 07:28:41,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14997 states to 14997 states and 20500 transitions. [2022-11-19 07:28:41,051 INFO L78 Accepts]: Start accepts. Automaton has 14997 states and 20500 transitions. Word has length 175 [2022-11-19 07:28:41,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:41,052 INFO L495 AbstractCegarLoop]: Abstraction has 14997 states and 20500 transitions. [2022-11-19 07:28:41,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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) [2022-11-19 07:28:41,053 INFO L276 IsEmpty]: Start isEmpty. Operand 14997 states and 20500 transitions. [2022-11-19 07:28:41,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-19 07:28:41,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:41,056 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 9, 9, 8, 8, 8, 8, 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] [2022-11-19 07:28:41,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 07:28:41,056 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)] === [2022-11-19 07:28:41,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:41,057 INFO L85 PathProgramCache]: Analyzing trace with hash -236323945, now seen corresponding path program 1 times [2022-11-19 07:28:41,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:41,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660898866] [2022-11-19 07:28:41,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:41,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:41,558 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2022-11-19 07:28:41,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:41,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660898866] [2022-11-19 07:28:41,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660898866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:28:41,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:28:41,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:28:41,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684111235] [2022-11-19 07:28:41,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:28:41,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:28:41,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:41,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:28:41,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:28:41,561 INFO L87 Difference]: Start difference. First operand 14997 states and 20500 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) [2022-11-19 07:28:45,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:45,802 INFO L93 Difference]: Finished difference Result 15003 states and 20505 transitions. [2022-11-19 07:28:45,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:28:45,803 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 189 [2022-11-19 07:28:45,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:45,853 INFO L225 Difference]: With dead ends: 15003 [2022-11-19 07:28:45,853 INFO L226 Difference]: Without dead ends: 15001 [2022-11-19 07:28:45,860 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 [2022-11-19 07:28:45,861 INFO L413 NwaCegarLoop]: 2451 mSDtfsCounter, 2716 mSDsluCounter, 4882 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2719 SdHoareTripleChecker+Valid, 7333 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:45,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2719 Valid, 7333 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-19 07:28:45,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15001 states. [2022-11-19 07:28:46,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15001 to 15001. [2022-11-19 07:28:46,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15001 states, 8479 states have (on average 1.2263238589456305) internal successors, (10398), 8872 states have internal predecessors, (10398), 5034 states have call successors, (5034), 1502 states have call predecessors, (5034), 1485 states have return successors, (5071), 4890 states have call predecessors, (5071), 5031 states have call successors, (5071) [2022-11-19 07:28:47,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15001 states to 15001 states and 20503 transitions. [2022-11-19 07:28:47,031 INFO L78 Accepts]: Start accepts. Automaton has 15001 states and 20503 transitions. Word has length 189 [2022-11-19 07:28:47,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:47,032 INFO L495 AbstractCegarLoop]: Abstraction has 15001 states and 20503 transitions. [2022-11-19 07:28:47,033 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) [2022-11-19 07:28:47,033 INFO L276 IsEmpty]: Start isEmpty. Operand 15001 states and 20503 transitions. [2022-11-19 07:28:47,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-19 07:28:47,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:47,035 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 10, 10, 8, 8, 8, 8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:28:47,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-19 07:28:47,035 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)] === [2022-11-19 07:28:47,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:47,036 INFO L85 PathProgramCache]: Analyzing trace with hash -114550418, now seen corresponding path program 1 times [2022-11-19 07:28:47,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:47,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62613385] [2022-11-19 07:28:47,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:47,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:47,411 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 503 trivial. 0 not checked. [2022-11-19 07:28:47,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:47,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62613385] [2022-11-19 07:28:47,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62613385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:28:47,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:28:47,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:28:47,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237080970] [2022-11-19 07:28:47,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:28:47,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:28:47,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:47,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:28:47,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:28:47,415 INFO L87 Difference]: Start difference. First operand 15001 states and 20503 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-19 07:28:51,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:51,207 INFO L93 Difference]: Finished difference Result 15007 states and 20508 transitions. [2022-11-19 07:28:51,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:28:51,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 185 [2022-11-19 07:28:51,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:51,252 INFO L225 Difference]: With dead ends: 15007 [2022-11-19 07:28:51,252 INFO L226 Difference]: Without dead ends: 15005 [2022-11-19 07:28:51,257 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 [2022-11-19 07:28:51,258 INFO L413 NwaCegarLoop]: 2451 mSDtfsCounter, 2720 mSDsluCounter, 4882 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2722 SdHoareTripleChecker+Valid, 7333 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:51,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2722 Valid, 7333 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-19 07:28:51,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15005 states. [2022-11-19 07:28:52,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15005 to 15005. [2022-11-19 07:28:52,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15005 states, 8482 states have (on average 1.2262438104220703) internal successors, (10401), 8875 states have internal predecessors, (10401), 5034 states have call successors, (5034), 1503 states have call predecessors, (5034), 1486 states have return successors, (5071), 4890 states have call predecessors, (5071), 5031 states have call successors, (5071) [2022-11-19 07:28:52,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15005 states to 15005 states and 20506 transitions. [2022-11-19 07:28:52,423 INFO L78 Accepts]: Start accepts. Automaton has 15005 states and 20506 transitions. Word has length 185 [2022-11-19 07:28:52,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:52,423 INFO L495 AbstractCegarLoop]: Abstraction has 15005 states and 20506 transitions. [2022-11-19 07:28:52,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-19 07:28:52,423 INFO L276 IsEmpty]: Start isEmpty. Operand 15005 states and 20506 transitions. [2022-11-19 07:28:52,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-19 07:28:52,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:52,425 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 8, 8, 8, 8, 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] [2022-11-19 07:28:52,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-19 07:28:52,426 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)] === [2022-11-19 07:28:52,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:52,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1695950903, now seen corresponding path program 1 times [2022-11-19 07:28:52,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:52,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996150161] [2022-11-19 07:28:52,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:52,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:52,921 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2022-11-19 07:28:52,922 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:52,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996150161] [2022-11-19 07:28:52,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996150161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:28:52,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:28:52,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:28:52,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113786084] [2022-11-19 07:28:52,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:28:52,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:28:52,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:52,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:28:52,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:28:52,925 INFO L87 Difference]: Start difference. First operand 15005 states and 20506 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) [2022-11-19 07:28:57,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:57,945 INFO L93 Difference]: Finished difference Result 15011 states and 20511 transitions. [2022-11-19 07:28:57,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:28:57,945 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 199 [2022-11-19 07:28:57,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:58,083 INFO L225 Difference]: With dead ends: 15011 [2022-11-19 07:28:58,083 INFO L226 Difference]: Without dead ends: 15007 [2022-11-19 07:28:58,088 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 [2022-11-19 07:28:58,088 INFO L413 NwaCegarLoop]: 2451 mSDtfsCounter, 2716 mSDsluCounter, 4882 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2717 SdHoareTripleChecker+Valid, 7333 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:58,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2717 Valid, 7333 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-19 07:28:58,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15007 states. [2022-11-19 07:28:59,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15007 to 15007. [2022-11-19 07:28:59,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15007 states, 8484 states have (on average 1.226072607260726) internal successors, (10402), 8876 states have internal predecessors, (10402), 5034 states have call successors, (5034), 1504 states have call predecessors, (5034), 1486 states have return successors, (5071), 4890 states have call predecessors, (5071), 5031 states have call successors, (5071) [2022-11-19 07:28:59,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15007 states to 15007 states and 20507 transitions. [2022-11-19 07:28:59,131 INFO L78 Accepts]: Start accepts. Automaton has 15007 states and 20507 transitions. Word has length 199 [2022-11-19 07:28:59,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:59,131 INFO L495 AbstractCegarLoop]: Abstraction has 15007 states and 20507 transitions. [2022-11-19 07:28:59,132 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) [2022-11-19 07:28:59,132 INFO L276 IsEmpty]: Start isEmpty. Operand 15007 states and 20507 transitions. [2022-11-19 07:28:59,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-19 07:28:59,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:59,133 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 8, 8, 8, 8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:28:59,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-19 07:28:59,134 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)] === [2022-11-19 07:28:59,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:59,134 INFO L85 PathProgramCache]: Analyzing trace with hash -949813938, now seen corresponding path program 1 times [2022-11-19 07:28:59,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:59,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266625868] [2022-11-19 07:28:59,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:59,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:59,540 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2022-11-19 07:28:59,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:59,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266625868] [2022-11-19 07:28:59,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266625868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:28:59,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:28:59,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:28:59,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928363906] [2022-11-19 07:28:59,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:28:59,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:28:59,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:59,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:28:59,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:28:59,543 INFO L87 Difference]: Start difference. First operand 15007 states and 20507 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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) [2022-11-19 07:29:04,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:04,257 INFO L93 Difference]: Finished difference Result 15007 states and 20507 transitions. [2022-11-19 07:29:04,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:29:04,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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 195 [2022-11-19 07:29:04,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:04,311 INFO L225 Difference]: With dead ends: 15007 [2022-11-19 07:29:04,311 INFO L226 Difference]: Without dead ends: 14856 [2022-11-19 07:29:04,320 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 [2022-11-19 07:29:04,321 INFO L413 NwaCegarLoop]: 2449 mSDtfsCounter, 2716 mSDsluCounter, 4881 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2716 SdHoareTripleChecker+Valid, 7330 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:04,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2716 Valid, 7330 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-19 07:29:04,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14856 states. [2022-11-19 07:29:06,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14856 to 14856. [2022-11-19 07:29:06,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14856 states, 8426 states have (on average 1.2238309992879184) internal successors, (10312), 8786 states have internal predecessors, (10312), 4955 states have call successors, (4955), 1489 states have call predecessors, (4955), 1473 states have return successors, (4995), 4844 states have call predecessors, (4995), 4955 states have call successors, (4995) [2022-11-19 07:29:06,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14856 states to 14856 states and 20262 transitions. [2022-11-19 07:29:06,369 INFO L78 Accepts]: Start accepts. Automaton has 14856 states and 20262 transitions. Word has length 195 [2022-11-19 07:29:06,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:06,369 INFO L495 AbstractCegarLoop]: Abstraction has 14856 states and 20262 transitions. [2022-11-19 07:29:06,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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) [2022-11-19 07:29:06,370 INFO L276 IsEmpty]: Start isEmpty. Operand 14856 states and 20262 transitions. [2022-11-19 07:29:06,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-19 07:29:06,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:06,373 INFO L195 NwaCegarLoop]: trace histogram [16, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:06,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-19 07:29:06,373 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)] === [2022-11-19 07:29:06,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:06,374 INFO L85 PathProgramCache]: Analyzing trace with hash 515864906, now seen corresponding path program 1 times [2022-11-19 07:29:06,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:06,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226575539] [2022-11-19 07:29:06,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:06,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2022-11-19 07:29:07,120 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:07,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226575539] [2022-11-19 07:29:07,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226575539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:07,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:07,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:29:07,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205348769] [2022-11-19 07:29:07,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:07,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:29:07,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:07,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:29:07,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:29:07,123 INFO L87 Difference]: Start difference. First operand 14856 states and 20262 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-19 07:29:12,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:12,272 INFO L93 Difference]: Finished difference Result 14892 states and 20296 transitions. [2022-11-19 07:29:12,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:29:12,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 230 [2022-11-19 07:29:12,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:12,318 INFO L225 Difference]: With dead ends: 14892 [2022-11-19 07:29:12,318 INFO L226 Difference]: Without dead ends: 14890 [2022-11-19 07:29:12,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:29:12,326 INFO L413 NwaCegarLoop]: 2427 mSDtfsCounter, 1548 mSDsluCounter, 5903 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 8330 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:12,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 8330 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-19 07:29:12,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14890 states. [2022-11-19 07:29:13,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14890 to 14888. [2022-11-19 07:29:13,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14888 states, 8450 states have (on average 1.2215384615384615) internal successors, (10322), 8810 states have internal predecessors, (10322), 4955 states have call successors, (4955), 1497 states have call predecessors, (4955), 1481 states have return successors, (4995), 4844 states have call predecessors, (4995), 4955 states have call successors, (4995) [2022-11-19 07:29:13,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14888 states to 14888 states and 20272 transitions. [2022-11-19 07:29:13,649 INFO L78 Accepts]: Start accepts. Automaton has 14888 states and 20272 transitions. Word has length 230 [2022-11-19 07:29:13,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:13,650 INFO L495 AbstractCegarLoop]: Abstraction has 14888 states and 20272 transitions. [2022-11-19 07:29:13,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-19 07:29:13,651 INFO L276 IsEmpty]: Start isEmpty. Operand 14888 states and 20272 transitions. [2022-11-19 07:29:13,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-11-19 07:29:13,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:13,656 INFO L195 NwaCegarLoop]: trace histogram [15, 10, 10, 8, 8, 8, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:13,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-19 07:29:13,656 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:29:13,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:13,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1983715454, now seen corresponding path program 1 times [2022-11-19 07:29:13,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:13,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677065103] [2022-11-19 07:29:13,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:13,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:13,952 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2022-11-19 07:29:13,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:13,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677065103] [2022-11-19 07:29:13,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677065103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:13,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:13,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:29:13,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374611850] [2022-11-19 07:29:13,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:13,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:29:13,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:13,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:29:13,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:29:13,955 INFO L87 Difference]: Start difference. First operand 14888 states and 20272 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-19 07:29:18,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:18,851 INFO L93 Difference]: Finished difference Result 29730 states and 40564 transitions. [2022-11-19 07:29:18,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:29:18,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 260 [2022-11-19 07:29:18,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:18,919 INFO L225 Difference]: With dead ends: 29730 [2022-11-19 07:29:18,919 INFO L226 Difference]: Without dead ends: 14912 [2022-11-19 07:29:18,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:29:18,968 INFO L413 NwaCegarLoop]: 2407 mSDtfsCounter, 5 mSDsluCounter, 4808 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 7215 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:18,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 7215 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-19 07:29:18,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14912 states. [2022-11-19 07:29:20,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14912 to 14908. [2022-11-19 07:29:20,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14908 states, 8466 states have (on average 1.221119773210489) internal successors, (10338), 8830 states have internal predecessors, (10338), 4955 states have call successors, (4955), 1497 states have call predecessors, (4955), 1485 states have return successors, (4999), 4844 states have call predecessors, (4999), 4955 states have call successors, (4999) [2022-11-19 07:29:20,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14908 states to 14908 states and 20292 transitions. [2022-11-19 07:29:20,296 INFO L78 Accepts]: Start accepts. Automaton has 14908 states and 20292 transitions. Word has length 260 [2022-11-19 07:29:20,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:20,296 INFO L495 AbstractCegarLoop]: Abstraction has 14908 states and 20292 transitions. [2022-11-19 07:29:20,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-19 07:29:20,297 INFO L276 IsEmpty]: Start isEmpty. Operand 14908 states and 20292 transitions. [2022-11-19 07:29:20,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-11-19 07:29:20,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:20,301 INFO L195 NwaCegarLoop]: trace histogram [16, 9, 9, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:20,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-19 07:29:20,302 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:29:20,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:20,302 INFO L85 PathProgramCache]: Analyzing trace with hash -2071733209, now seen corresponding path program 1 times [2022-11-19 07:29:20,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:20,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699861423] [2022-11-19 07:29:20,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:20,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:20,895 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2022-11-19 07:29:20,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:20,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699861423] [2022-11-19 07:29:20,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699861423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:20,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:20,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:29:20,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302028030] [2022-11-19 07:29:20,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:20,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:29:20,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:20,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:29:20,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:29:20,898 INFO L87 Difference]: Start difference. First operand 14908 states and 20292 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 07:29:26,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:26,821 INFO L93 Difference]: Finished difference Result 14910 states and 20293 transitions. [2022-11-19 07:29:26,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:29:26,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 262 [2022-11-19 07:29:26,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:26,904 INFO L225 Difference]: With dead ends: 14910 [2022-11-19 07:29:26,904 INFO L226 Difference]: Without dead ends: 14908 [2022-11-19 07:29:26,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:29:26,919 INFO L413 NwaCegarLoop]: 2412 mSDtfsCounter, 1131 mSDsluCounter, 6200 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 8612 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:26,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 8612 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-19 07:29:26,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14908 states. [2022-11-19 07:29:28,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14908 to 14908. [2022-11-19 07:29:28,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14908 states, 8466 states have (on average 1.218521143397118) internal successors, (10316), 8830 states have internal predecessors, (10316), 4955 states have call successors, (4955), 1497 states have call predecessors, (4955), 1485 states have return successors, (4999), 4844 states have call predecessors, (4999), 4955 states have call successors, (4999) [2022-11-19 07:29:28,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14908 states to 14908 states and 20270 transitions. [2022-11-19 07:29:28,428 INFO L78 Accepts]: Start accepts. Automaton has 14908 states and 20270 transitions. Word has length 262 [2022-11-19 07:29:28,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:28,429 INFO L495 AbstractCegarLoop]: Abstraction has 14908 states and 20270 transitions. [2022-11-19 07:29:28,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 07:29:28,429 INFO L276 IsEmpty]: Start isEmpty. Operand 14908 states and 20270 transitions. [2022-11-19 07:29:28,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2022-11-19 07:29:28,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:28,440 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:28,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-19 07:29:28,441 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:29:28,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:28,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1775590476, now seen corresponding path program 1 times [2022-11-19 07:29:28,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:28,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571468503] [2022-11-19 07:29:28,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:28,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:28,657 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:29:28,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687820393] [2022-11-19 07:29:28,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:28,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:29:28,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:29:28,666 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:29:28,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:29:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:30,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 4379 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:29:30,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-11-19 07:29:30,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:29:30,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:30,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571468503] [2022-11-19 07:29:30,354 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:29:30,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687820393] [2022-11-19 07:29:30,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687820393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:30,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:30,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:29:30,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582055994] [2022-11-19 07:29:30,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:30,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:29:30,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:30,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:29:30,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:30,357 INFO L87 Difference]: Start difference. First operand 14908 states and 20270 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-19 07:29:34,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:34,221 INFO L93 Difference]: Finished difference Result 31688 states and 43582 transitions. [2022-11-19 07:29:34,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:29:34,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 369 [2022-11-19 07:29:34,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:34,297 INFO L225 Difference]: With dead ends: 31688 [2022-11-19 07:29:34,297 INFO L226 Difference]: Without dead ends: 16850 [2022-11-19 07:29:34,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:34,353 INFO L413 NwaCegarLoop]: 2663 mSDtfsCounter, 163 mSDsluCounter, 2471 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 5134 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:34,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 5134 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-19 07:29:34,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16850 states. [2022-11-19 07:29:35,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16850 to 14914. [2022-11-19 07:29:35,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14914 states, 8472 states have (on average 1.2183663833805476) internal successors, (10322), 8836 states have internal predecessors, (10322), 4955 states have call successors, (4955), 1497 states have call predecessors, (4955), 1485 states have return successors, (4999), 4844 states have call predecessors, (4999), 4955 states have call successors, (4999) [2022-11-19 07:29:36,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14914 states to 14914 states and 20276 transitions. [2022-11-19 07:29:36,046 INFO L78 Accepts]: Start accepts. Automaton has 14914 states and 20276 transitions. Word has length 369 [2022-11-19 07:29:36,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:36,046 INFO L495 AbstractCegarLoop]: Abstraction has 14914 states and 20276 transitions. [2022-11-19 07:29:36,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-19 07:29:36,046 INFO L276 IsEmpty]: Start isEmpty. Operand 14914 states and 20276 transitions. [2022-11-19 07:29:36,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-11-19 07:29:36,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:36,058 INFO L195 NwaCegarLoop]: trace histogram [17, 12, 12, 9, 9, 9, 9, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:36,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:29:36,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:29:36,274 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:29:36,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:36,274 INFO L85 PathProgramCache]: Analyzing trace with hash -2479967, now seen corresponding path program 1 times [2022-11-19 07:29:36,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:36,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421232040] [2022-11-19 07:29:36,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:36,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:36,425 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:29:36,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [806627822] [2022-11-19 07:29:36,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:36,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:29:36,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:29:36,428 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:29:36,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:29:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:38,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 4498 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:29:38,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:38,161 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2022-11-19 07:29:38,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:29:38,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:38,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421232040] [2022-11-19 07:29:38,162 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:29:38,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806627822] [2022-11-19 07:29:38,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806627822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:38,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:38,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:29:38,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319322587] [2022-11-19 07:29:38,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:38,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:29:38,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:38,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:29:38,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:29:38,164 INFO L87 Difference]: Start difference. First operand 14914 states and 20276 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-19 07:29:42,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:42,942 INFO L93 Difference]: Finished difference Result 29812 states and 40612 transitions. [2022-11-19 07:29:42,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:29:42,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 383 [2022-11-19 07:29:42,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:43,011 INFO L225 Difference]: With dead ends: 29812 [2022-11-19 07:29:43,012 INFO L226 Difference]: Without dead ends: 14968 [2022-11-19 07:29:43,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:29:43,060 INFO L413 NwaCegarLoop]: 2413 mSDtfsCounter, 13 mSDsluCounter, 4815 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 7228 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:43,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 7228 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-19 07:29:43,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14968 states. [2022-11-19 07:29:44,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14968 to 14926. [2022-11-19 07:29:44,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14926 states, 8484 states have (on average 1.2180575200377182) internal successors, (10334), 8848 states have internal predecessors, (10334), 4955 states have call successors, (4955), 1497 states have call predecessors, (4955), 1485 states have return successors, (4999), 4844 states have call predecessors, (4999), 4955 states have call successors, (4999) [2022-11-19 07:29:44,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14926 states to 14926 states and 20288 transitions. [2022-11-19 07:29:44,530 INFO L78 Accepts]: Start accepts. Automaton has 14926 states and 20288 transitions. Word has length 383 [2022-11-19 07:29:44,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:44,530 INFO L495 AbstractCegarLoop]: Abstraction has 14926 states and 20288 transitions. [2022-11-19 07:29:44,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-19 07:29:44,531 INFO L276 IsEmpty]: Start isEmpty. Operand 14926 states and 20288 transitions. [2022-11-19 07:29:44,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2022-11-19 07:29:44,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:44,541 INFO L195 NwaCegarLoop]: trace histogram [17, 12, 12, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:44,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:29:44,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:29:44,751 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:29:44,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:44,751 INFO L85 PathProgramCache]: Analyzing trace with hash -734759898, now seen corresponding path program 1 times [2022-11-19 07:29:44,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:44,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994281278] [2022-11-19 07:29:44,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:44,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:44,928 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:29:44,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2113765377] [2022-11-19 07:29:44,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:44,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:29:44,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:29:44,930 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:29:44,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:29:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:46,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 4670 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:29:46,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2022-11-19 07:29:46,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:29:46,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:46,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994281278] [2022-11-19 07:29:46,740 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:29:46,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113765377] [2022-11-19 07:29:46,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113765377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:46,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:46,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:29:46,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542536307] [2022-11-19 07:29:46,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:46,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:29:46,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:46,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:29:46,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:29:46,743 INFO L87 Difference]: Start difference. First operand 14926 states and 20288 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-19 07:29:51,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:51,007 INFO L93 Difference]: Finished difference Result 29842 states and 40648 transitions. [2022-11-19 07:29:51,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:29:51,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 400 [2022-11-19 07:29:51,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:51,050 INFO L225 Difference]: With dead ends: 29842 [2022-11-19 07:29:51,050 INFO L226 Difference]: Without dead ends: 14986 [2022-11-19 07:29:51,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:29:51,079 INFO L413 NwaCegarLoop]: 2417 mSDtfsCounter, 13 mSDsluCounter, 4815 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 7232 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:51,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 7232 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-19 07:29:51,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14986 states. [2022-11-19 07:29:52,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14986 to 14938. [2022-11-19 07:29:52,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14938 states, 8496 states have (on average 1.2177495291902072) internal successors, (10346), 8860 states have internal predecessors, (10346), 4955 states have call successors, (4955), 1497 states have call predecessors, (4955), 1485 states have return successors, (4999), 4844 states have call predecessors, (4999), 4955 states have call successors, (4999) [2022-11-19 07:29:52,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14938 states to 14938 states and 20300 transitions. [2022-11-19 07:29:52,428 INFO L78 Accepts]: Start accepts. Automaton has 14938 states and 20300 transitions. Word has length 400 [2022-11-19 07:29:52,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:52,429 INFO L495 AbstractCegarLoop]: Abstraction has 14938 states and 20300 transitions. [2022-11-19 07:29:52,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-19 07:29:52,429 INFO L276 IsEmpty]: Start isEmpty. Operand 14938 states and 20300 transitions. [2022-11-19 07:29:52,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-19 07:29:52,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:52,437 INFO L195 NwaCegarLoop]: trace histogram [17, 12, 12, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:52,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-19 07:29:52,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-19 07:29:52,651 INFO L420 AbstractCegarLoop]: === Iteration 25 === 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)] === [2022-11-19 07:29:52,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:52,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1915408493, now seen corresponding path program 1 times [2022-11-19 07:29:52,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:52,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984594283] [2022-11-19 07:29:52,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:52,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:52,838 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:29:52,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1206146864] [2022-11-19 07:29:52,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:52,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:29:52,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:29:52,840 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:29:52,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:29:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:54,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 5046 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:29:54,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:54,674 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2022-11-19 07:29:54,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:29:54,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:54,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984594283] [2022-11-19 07:29:54,675 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:29:54,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206146864] [2022-11-19 07:29:54,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206146864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:54,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:54,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:29:54,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234149462] [2022-11-19 07:29:54,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:54,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:29:54,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:54,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:29:54,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:29:54,678 INFO L87 Difference]: Start difference. First operand 14938 states and 20300 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-19 07:29:59,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:59,019 INFO L93 Difference]: Finished difference Result 29872 states and 40684 transitions. [2022-11-19 07:29:59,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:29:59,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 430 [2022-11-19 07:29:59,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:59,082 INFO L225 Difference]: With dead ends: 29872 [2022-11-19 07:29:59,082 INFO L226 Difference]: Without dead ends: 15004 [2022-11-19 07:29:59,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:29:59,126 INFO L413 NwaCegarLoop]: 2419 mSDtfsCounter, 13 mSDsluCounter, 4818 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 7237 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:59,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 7237 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-19 07:29:59,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15004 states. [2022-11-19 07:30:00,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15004 to 14950. [2022-11-19 07:30:00,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14950 states, 8508 states have (on average 1.2174424071462153) internal successors, (10358), 8872 states have internal predecessors, (10358), 4955 states have call successors, (4955), 1497 states have call predecessors, (4955), 1485 states have return successors, (4999), 4844 states have call predecessors, (4999), 4955 states have call successors, (4999) [2022-11-19 07:30:00,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14950 states to 14950 states and 20312 transitions. [2022-11-19 07:30:00,463 INFO L78 Accepts]: Start accepts. Automaton has 14950 states and 20312 transitions. Word has length 430 [2022-11-19 07:30:00,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:30:00,464 INFO L495 AbstractCegarLoop]: Abstraction has 14950 states and 20312 transitions. [2022-11-19 07:30:00,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-19 07:30:00,465 INFO L276 IsEmpty]: Start isEmpty. Operand 14950 states and 20312 transitions. [2022-11-19 07:30:00,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2022-11-19 07:30:00,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:30:00,477 INFO L195 NwaCegarLoop]: trace histogram [17, 12, 12, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:30:00,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:30:00,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-19 07:30:00,691 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:30:00,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:30:00,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1275134102, now seen corresponding path program 1 times [2022-11-19 07:30:00,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:30:00,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113791947] [2022-11-19 07:30:00,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:30:00,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:30:00,926 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:30:00,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [267081567] [2022-11-19 07:30:00,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:30:00,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:30:00,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:30:00,928 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:30:00,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:30:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:30:02,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 5102 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:30:02,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:30:02,818 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-11-19 07:30:02,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:30:02,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:30:02,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113791947] [2022-11-19 07:30:02,819 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:30:02,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267081567] [2022-11-19 07:30:02,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267081567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:30:02,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:30:02,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:30:02,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259025684] [2022-11-19 07:30:02,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:30:02,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:30:02,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:30:02,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:30:02,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:30:02,822 INFO L87 Difference]: Start difference. First operand 14950 states and 20312 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-19 07:30:09,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:30:09,255 INFO L93 Difference]: Finished difference Result 29902 states and 40716 transitions. [2022-11-19 07:30:09,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:30:09,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 436 [2022-11-19 07:30:09,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:30:09,302 INFO L225 Difference]: With dead ends: 29902 [2022-11-19 07:30:09,302 INFO L226 Difference]: Without dead ends: 15022 [2022-11-19 07:30:09,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:30:09,343 INFO L413 NwaCegarLoop]: 2421 mSDtfsCounter, 13 mSDsluCounter, 4821 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 7242 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:30:09,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 7242 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-19 07:30:09,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15022 states. [2022-11-19 07:30:10,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15022 to 14962. [2022-11-19 07:30:10,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14962 states, 8520 states have (on average 1.2171361502347418) internal successors, (10370), 8884 states have internal predecessors, (10370), 4955 states have call successors, (4955), 1497 states have call predecessors, (4955), 1485 states have return successors, (4999), 4844 states have call predecessors, (4999), 4955 states have call successors, (4999) [2022-11-19 07:30:10,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14962 states to 14962 states and 20324 transitions. [2022-11-19 07:30:10,692 INFO L78 Accepts]: Start accepts. Automaton has 14962 states and 20324 transitions. Word has length 436 [2022-11-19 07:30:10,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:30:10,693 INFO L495 AbstractCegarLoop]: Abstraction has 14962 states and 20324 transitions. [2022-11-19 07:30:10,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-19 07:30:10,693 INFO L276 IsEmpty]: Start isEmpty. Operand 14962 states and 20324 transitions. [2022-11-19 07:30:10,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-11-19 07:30:10,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:30:10,706 INFO L195 NwaCegarLoop]: trace histogram [17, 12, 12, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:30:10,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:30:10,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:30:10,925 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:30:10,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:30:10,925 INFO L85 PathProgramCache]: Analyzing trace with hash 923595097, now seen corresponding path program 1 times [2022-11-19 07:30:10,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:30:10,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893338301] [2022-11-19 07:30:10,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:30:10,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:30:11,087 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:30:11,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [16991874] [2022-11-19 07:30:11,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:30:11,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:30:11,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:30:11,091 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:30:11,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:30:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:30:13,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 5104 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:30:13,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:30:13,064 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 170 proven. 1 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-11-19 07:30:13,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:30:13,766 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2022-11-19 07:30:13,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:30:13,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893338301] [2022-11-19 07:30:13,766 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:30:13,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16991874] [2022-11-19 07:30:13,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16991874] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:30:13,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [606500977] [2022-11-19 07:30:13,799 INFO L159 IcfgInterpreter]: Started Sifa with 237 locations of interest [2022-11-19 07:30:13,799 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:30:13,804 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:30:13,810 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:30:13,810 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:34:44,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-19 07:34:44,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-19 07:34:44,486 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:34:44,489 INFO L158 Benchmark]: Toolchain (without parser) took 464078.85ms. Allocated memory was 146.8MB in the beginning and 4.1GB in the end (delta: 4.0GB). Free memory was 97.3MB in the beginning and 3.2GB in the end (delta: -3.1GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. [2022-11-19 07:34:44,489 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 96.5MB. Free memory was 51.9MB in the beginning and 51.8MB in the end (delta: 78.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:34:44,489 INFO L158 Benchmark]: CACSL2BoogieTranslator took 5396.89ms. Allocated memory was 146.8MB in the beginning and 207.6MB in the end (delta: 60.8MB). Free memory was 97.0MB in the beginning and 78.0MB in the end (delta: 19.0MB). Peak memory consumption was 91.0MB. Max. memory is 16.1GB. [2022-11-19 07:34:44,490 INFO L158 Benchmark]: Boogie Procedure Inliner took 461.71ms. Allocated memory is still 207.6MB. Free memory was 78.0MB in the beginning and 93.8MB in the end (delta: -15.8MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2022-11-19 07:34:44,490 INFO L158 Benchmark]: Boogie Preprocessor took 447.22ms. Allocated memory was 207.6MB in the beginning and 310.4MB in the end (delta: 102.8MB). Free memory was 93.8MB in the beginning and 193.5MB in the end (delta: -99.8MB). Peak memory consumption was 52.8MB. Max. memory is 16.1GB. [2022-11-19 07:34:44,490 INFO L158 Benchmark]: RCFGBuilder took 9225.27ms. Allocated memory was 310.4MB in the beginning and 662.7MB in the end (delta: 352.3MB). Free memory was 193.0MB in the beginning and 460.8MB in the end (delta: -267.7MB). Peak memory consumption was 275.4MB. Max. memory is 16.1GB. [2022-11-19 07:34:44,490 INFO L158 Benchmark]: TraceAbstraction took 448536.87ms. Allocated memory was 662.7MB in the beginning and 4.1GB in the end (delta: 3.5GB). Free memory was 459.7MB in the beginning and 3.2GB in the end (delta: -2.7GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. [2022-11-19 07:34:44,492 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 96.5MB. Free memory was 51.9MB in the beginning and 51.8MB in the end (delta: 78.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 5396.89ms. Allocated memory was 146.8MB in the beginning and 207.6MB in the end (delta: 60.8MB). Free memory was 97.0MB in the beginning and 78.0MB in the end (delta: 19.0MB). Peak memory consumption was 91.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 461.71ms. Allocated memory is still 207.6MB. Free memory was 78.0MB in the beginning and 93.8MB in the end (delta: -15.8MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 447.22ms. Allocated memory was 207.6MB in the beginning and 310.4MB in the end (delta: 102.8MB). Free memory was 93.8MB in the beginning and 193.5MB in the end (delta: -99.8MB). Peak memory consumption was 52.8MB. Max. memory is 16.1GB. * RCFGBuilder took 9225.27ms. Allocated memory was 310.4MB in the beginning and 662.7MB in the end (delta: 352.3MB). Free memory was 193.0MB in the beginning and 460.8MB in the end (delta: -267.7MB). Peak memory consumption was 275.4MB. Max. memory is 16.1GB. * TraceAbstraction took 448536.87ms. Allocated memory was 662.7MB in the beginning and 4.1GB in the end (delta: 3.5GB). Free memory was 459.7MB in the beginning and 3.2GB in the end (delta: -2.7GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-19 07:34:44,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS --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 5663310b82fa3e5d48c5bcacd13ac8ac886029c41a2f8f3bd2b8442c496a9447 --- 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-8393723 [2022-11-19 07:34:46,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:34:46,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:34:46,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:34:46,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:34:47,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:34:47,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:34:47,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:34:47,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:34:47,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:34:47,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:34:47,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:34:47,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:34:47,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:34:47,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:34:47,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:34:47,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:34:47,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:34:47,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:34:47,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:34:47,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:34:47,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:34:47,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:34:47,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:34:47,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:34:47,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:34:47,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:34:47,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:34:47,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:34:47,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:34:47,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:34:47,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:34:47,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:34:47,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:34:47,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:34:47,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:34:47,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:34:47,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:34:47,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:34:47,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:34:47,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:34:47,047 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 07:34:47,077 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:34:47,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:34:47,078 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:34:47,078 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:34:47,079 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:34:47,079 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:34:47,080 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:34:47,080 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:34:47,080 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:34:47,080 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:34:47,081 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:34:47,081 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:34:47,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:34:47,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:34:47,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:34:47,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:34:47,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:34:47,083 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:34:47,083 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:34:47,084 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:34:47,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:34:47,084 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:34:47,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:34:47,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:34:47,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:34:47,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:34:47,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:34:47,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:34:47,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:34:47,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:34:47,086 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:34:47,087 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:34:47,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:34:47,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:34:47,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:34:47,088 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5663310b82fa3e5d48c5bcacd13ac8ac886029c41a2f8f3bd2b8442c496a9447 [2022-11-19 07:34:47,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:34:47,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:34:47,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:34:47,496 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:34:47,499 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:34:47,500 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i [2022-11-19 07:34:47,575 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/data/f57ccbdee/4450b709e5384bab86c6689cd1c0de84/FLAGf1fce1675 [2022-11-19 07:34:48,527 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:34:48,529 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i [2022-11-19 07:34:48,586 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/data/f57ccbdee/4450b709e5384bab86c6689cd1c0de84/FLAGf1fce1675 [2022-11-19 07:34:48,878 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/data/f57ccbdee/4450b709e5384bab86c6689cd1c0de84 [2022-11-19 07:34:48,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:34:48,881 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:34:48,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:34:48,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:34:48,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:34:48,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:48" (1/1) ... [2022-11-19 07:34:48,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@699873c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48, skipping insertion in model container [2022-11-19 07:34:48,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:48" (1/1) ... [2022-11-19 07:34:48,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:34:49,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:34:51,947 WARN L569 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2022-11-19 07:34:51,968 WARN L569 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2022-11-19 07:34:53,115 WARN L234 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[408897,408910] [2022-11-19 07:34:53,125 WARN L234 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[409066,409079] [2022-11-19 07:34:53,126 WARN L234 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[409233,409246] [2022-11-19 07:34:53,126 WARN L234 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[409401,409414] [2022-11-19 07:34:53,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:34:53,226 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 07:34:53,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:34:53,916 WARN L234 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[408897,408910] [2022-11-19 07:34:53,917 WARN L234 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[409066,409079] [2022-11-19 07:34:53,922 WARN L234 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[409233,409246] [2022-11-19 07:34:53,923 WARN L234 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[409401,409414] [2022-11-19 07:34:53,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:34:53,961 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:34:54,398 WARN L234 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[408897,408910] [2022-11-19 07:34:54,399 WARN L234 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[409066,409079] [2022-11-19 07:34:54,399 WARN L234 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[409233,409246] [2022-11-19 07:34:54,400 WARN L234 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_34264b27-dedf-4c09-9c1f-03b09e309e8e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[409401,409414] [2022-11-19 07:34:54,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:34:54,688 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:34:54,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:54 WrapperNode [2022-11-19 07:34:54,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:34:54,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:34:54,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:34:54,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:34:54,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:54" (1/1) ... [2022-11-19 07:34:54,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:54" (1/1) ... [2022-11-19 07:34:55,085 INFO L138 Inliner]: procedures = 587, calls = 2987, calls flagged for inlining = 287, calls inlined = 255, statements flattened = 6330 [2022-11-19 07:34:55,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:34:55,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:34:55,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:34:55,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:34:55,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:54" (1/1) ... [2022-11-19 07:34:55,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:54" (1/1) ... [2022-11-19 07:34:55,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:54" (1/1) ... [2022-11-19 07:34:55,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:54" (1/1) ... [2022-11-19 07:34:55,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:54" (1/1) ... [2022-11-19 07:34:55,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:54" (1/1) ... [2022-11-19 07:34:55,350 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:54" (1/1) ... [2022-11-19 07:34:55,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:54" (1/1) ... [2022-11-19 07:34:55,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:34:55,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:34:55,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:34:55,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:34:55,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:54" (1/1) ... [2022-11-19 07:34:55,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:34:55,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:34:55,434 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:34:55,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:34:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_link_speed [2022-11-19 07:34:55,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_link_speed [2022-11-19 07:34:55,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_hw_lock_of_ql3_adapter [2022-11-19 07:34:55,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_hw_lock_of_ql3_adapter [2022-11-19 07:34:55,484 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-19 07:34:55,484 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-19 07:34:55,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:34:55,485 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:34:55,485 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-19 07:34:55,485 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-19 07:34:55,485 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2022-11-19 07:34:55,485 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2022-11-19 07:34:55,485 INFO L130 BoogieDeclarations]: Found specification of procedure ql3xxx_close [2022-11-19 07:34:55,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ql3xxx_close [2022-11-19 07:34:55,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:34:55,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:34:55,486 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-19 07:34:55,486 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-19 07:34:55,486 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2022-11-19 07:34:55,487 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2022-11-19 07:34:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 07:34:55,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 07:34:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure ql_this_adapter_controls_port [2022-11-19 07:34:55,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_this_adapter_controls_port [2022-11-19 07:34:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure ql_enable_interrupts [2022-11-19 07:34:55,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_enable_interrupts [2022-11-19 07:34:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 07:34:55,488 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 07:34:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 07:34:55,488 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 07:34:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2022-11-19 07:34:55,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2022-11-19 07:34:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_common_reg_l [2022-11-19 07:34:55,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_common_reg_l [2022-11-19 07:34:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_send_free_list [2022-11-19 07:34:55,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_send_free_list [2022-11-19 07:34:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-19 07:34:55,490 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-19 07:34:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 07:34:55,490 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 07:34:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure ssleep [2022-11-19 07:34:55,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ssleep [2022-11-19 07:34:55,491 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2022-11-19 07:34:55,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2022-11-19 07:34:55,491 INFO L130 BoogieDeclarations]: Found specification of procedure ql_cycle_adapter [2022-11-19 07:34:55,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_cycle_adapter [2022-11-19 07:34:55,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 07:34:55,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 07:34:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mac_cfg_soft_reset [2022-11-19 07:34:55,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mac_cfg_soft_reset [2022-11-19 07:34:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 07:34:55,492 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 07:34:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-19 07:34:55,492 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-19 07:34:55,493 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_disable_scan_mode [2022-11-19 07:34:55,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_disable_scan_mode [2022-11-19 07:34:55,493 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 07:34:55,493 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 07:34:55,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 07:34:55,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 07:34:55,493 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-19 07:34:55,494 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-19 07:34:55,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:34:55,494 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-19 07:34:55,494 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-19 07:34:55,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-19 07:34:55,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:34:55,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-19 07:34:55,495 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_page0_reg_l [2022-11-19 07:34:55,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_page0_reg_l [2022-11-19 07:34:55,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-19 07:34:55,495 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_up [2022-11-19 07:34:55,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_up [2022-11-19 07:34:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 07:34:55,496 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 07:34:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2022-11-19 07:34:55,496 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2022-11-19 07:34:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 07:34:55,496 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 07:34:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 07:34:55,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 07:34:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 07:34:55,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 07:34:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page1_reg [2022-11-19 07:34:55,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page1_reg [2022-11-19 07:34:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~C_ULONG~X~C_INT~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-19 07:34:55,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~C_ULONG~X~C_INT~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-19 07:34:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 07:34:55,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 07:34:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:34:55,498 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:34:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-19 07:34:55,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-19 07:34:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 07:34:55,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 07:34:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 07:34:55,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 07:34:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2022-11-19 07:34:55,500 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2022-11-19 07:34:55,500 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-19 07:34:55,500 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-19 07:34:55,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_hw_lock_of_ql3_adapter [2022-11-19 07:34:55,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_hw_lock_of_ql3_adapter [2022-11-19 07:34:55,500 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_register_page [2022-11-19 07:34:55,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_register_page [2022-11-19 07:34:55,501 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-19 07:34:55,501 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-19 07:34:55,501 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_read_reg_ex [2022-11-19 07:34:55,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_read_reg_ex [2022-11-19 07:34:55,501 INFO L130 BoogieDeclarations]: Found specification of procedure ql_phy_init_ex [2022-11-19 07:34:55,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_phy_init_ex [2022-11-19 07:34:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 07:34:55,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 07:34:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_common_reg_l [2022-11-19 07:34:55,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_common_reg_l [2022-11-19 07:34:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:34:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_common_reg [2022-11-19 07:34:55,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_common_reg [2022-11-19 07:34:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-19 07:34:55,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-19 07:34:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-19 07:34:55,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-19 07:34:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-19 07:34:55,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-19 07:34:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_spinlock [2022-11-19 07:34:55,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_spinlock [2022-11-19 07:34:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page2_reg [2022-11-19 07:34:55,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page2_reg [2022-11-19 07:34:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:34:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_common_reg [2022-11-19 07:34:55,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_common_reg [2022-11-19 07:34:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 07:34:55,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 07:34:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 07:34:55,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 07:34:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:34:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_read_reg [2022-11-19 07:34:55,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_read_reg [2022-11-19 07:34:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-19 07:34:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-19 07:34:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:34:55,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:34:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-19 07:34:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_unlock [2022-11-19 07:34:55,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_unlock [2022-11-19 07:34:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-19 07:34:55,509 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-19 07:34:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_nvram_reg [2022-11-19 07:34:55,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_nvram_reg [2022-11-19 07:34:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~X~$Pointer$~TO~VOID [2022-11-19 07:34:55,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~X~$Pointer$~TO~VOID [2022-11-19 07:34:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-19 07:34:55,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-19 07:34:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-19 07:34:55,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-19 07:34:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-19 07:34:55,511 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-19 07:34:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 07:34:55,512 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 07:34:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_for_drvr_lock [2022-11-19 07:34:55,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_for_drvr_lock [2022-11-19 07:34:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-19 07:34:55,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-19 07:34:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-11-19 07:34:55,513 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-11-19 07:34:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_enable_scan_mode [2022-11-19 07:34:55,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_enable_scan_mode [2022-11-19 07:34:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2022-11-19 07:34:55,513 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2022-11-19 07:34:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-19 07:34:55,514 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-19 07:34:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 07:34:55,514 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 07:34:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-19 07:34:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:34:55,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:34:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_for_mii_ready [2022-11-19 07:34:55,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_for_mii_ready [2022-11-19 07:34:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-19 07:34:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 07:34:55,516 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 07:34:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-19 07:34:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 07:34:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_large_buffers [2022-11-19 07:34:55,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_large_buffers [2022-11-19 07:34:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:34:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-19 07:34:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:34:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:34:55,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:34:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 07:34:55,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 07:34:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 07:34:55,518 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 07:34:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure ql_disable_interrupts [2022-11-19 07:34:55,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_disable_interrupts [2022-11-19 07:34:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-19 07:34:55,518 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-19 07:34:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-19 07:34:55,519 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-19 07:34:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-19 07:34:55,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-19 07:34:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_page0_reg [2022-11-19 07:34:55,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_page0_reg [2022-11-19 07:34:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-19 07:34:55,521 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-19 07:34:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure PHY_Setup [2022-11-19 07:34:55,521 INFO L138 BoogieDeclarations]: Found implementation of procedure PHY_Setup [2022-11-19 07:34:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:34:55,522 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:34:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_buffer_queues [2022-11-19 07:34:55,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_buffer_queues [2022-11-19 07:34:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 07:34:55,522 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 07:34:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-19 07:34:55,523 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-19 07:34:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-19 07:34:55,523 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-19 07:34:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure ql3xxx_remove [2022-11-19 07:34:55,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ql3xxx_remove [2022-11-19 07:34:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-19 07:34:55,524 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-19 07:34:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-19 07:34:55,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-19 07:34:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:34:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 07:34:55,526 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 07:34:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:34:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-19 07:34:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-19 07:34:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-19 07:34:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 07:34:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:34:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-19 07:34:55,533 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-19 07:34:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 07:34:55,540 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 07:34:55,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 07:34:55,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 07:34:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-19 07:34:55,541 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-19 07:34:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page0_reg [2022-11-19 07:34:55,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page0_reg [2022-11-19 07:34:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-19 07:34:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-19 07:34:55,542 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-19 07:34:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-19 07:34:55,542 INFO L130 BoogieDeclarations]: Found specification of procedure ql_is_link_full_dup [2022-11-19 07:34:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_is_link_full_dup [2022-11-19 07:34:55,542 INFO L130 BoogieDeclarations]: Found specification of procedure ql3xxx_open [2022-11-19 07:34:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ql3xxx_open [2022-11-19 07:34:55,543 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 07:34:55,543 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 07:34:55,543 INFO L130 BoogieDeclarations]: Found specification of procedure ql3xxx_tx_timeout [2022-11-19 07:34:55,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ql3xxx_tx_timeout [2022-11-19 07:34:55,544 INFO L130 BoogieDeclarations]: Found specification of procedure ql_supported_modes [2022-11-19 07:34:55,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_supported_modes [2022-11-19 07:34:55,544 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-11-19 07:34:55,544 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-11-19 07:34:55,544 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-11-19 07:34:55,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-11-19 07:34:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 07:34:55,546 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 07:34:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure ql_is_fiber [2022-11-19 07:34:55,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_is_fiber [2022-11-19 07:34:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-19 07:34:55,546 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-19 07:34:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:34:55,547 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:34:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_net_req_rsp_queues [2022-11-19 07:34:55,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_net_req_rsp_queues [2022-11-19 07:34:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-19 07:34:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-19 07:34:55,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-19 07:34:55,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-19 07:34:55,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:34:55,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:34:55,548 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_write_reg_ex [2022-11-19 07:34:55,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_write_reg_ex [2022-11-19 07:34:55,548 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_down [2022-11-19 07:34:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_down [2022-11-19 07:34:55,549 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 07:34:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 07:34:55,549 INFO L130 BoogieDeclarations]: Found specification of procedure ql_port_start [2022-11-19 07:34:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_port_start [2022-11-19 07:34:55,549 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-19 07:34:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-19 07:34:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_auto_cfg_status [2022-11-19 07:34:55,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_auto_cfg_status [2022-11-19 07:34:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_write_reg [2022-11-19 07:34:55,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_write_reg [2022-11-19 07:34:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 07:34:55,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 07:34:55,551 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-19 07:34:55,551 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-19 07:34:55,551 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-11-19 07:34:55,551 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-11-19 07:34:55,551 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-19 07:34:55,551 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-19 07:34:55,552 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2022-11-19 07:34:55,552 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_mac_addr [2022-11-19 07:34:55,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_mac_addr [2022-11-19 07:34:55,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 07:34:55,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 07:34:56,697 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:34:56,706 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:34:57,212 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:35:44,120 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 07:35:44,318 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:35:44,348 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:35:44,348 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:35:44,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:44 BoogieIcfgContainer [2022-11-19 07:35:44,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:35:44,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:35:44,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:35:44,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:35:44,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:34:48" (1/3) ... [2022-11-19 07:35:44,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5330b8cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:44, skipping insertion in model container [2022-11-19 07:35:44,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:54" (2/3) ... [2022-11-19 07:35:44,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5330b8cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:44, skipping insertion in model container [2022-11-19 07:35:44,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:44" (3/3) ... [2022-11-19 07:35:44,364 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i [2022-11-19 07:35:44,383 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:35:44,383 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-19 07:35:44,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:35:44,516 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;@7d061438, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:35:44,516 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-19 07:35:44,531 INFO L276 IsEmpty]: Start isEmpty. Operand has 2476 states, 1624 states have (on average 1.2543103448275863) internal successors, (2037), 1675 states have internal predecessors, (2037), 714 states have call successors, (714), 136 states have call predecessors, (714), 135 states have return successors, (709), 694 states have call predecessors, (709), 709 states have call successors, (709) [2022-11-19 07:35:44,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-19 07:35:44,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:44,563 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:44,563 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)] === [2022-11-19 07:35:44,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:44,571 INFO L85 PathProgramCache]: Analyzing trace with hash 494826525, now seen corresponding path program 1 times [2022-11-19 07:35:44,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:35:44,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699717404] [2022-11-19 07:35:44,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:44,590 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:44,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:35:44,599 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:35:44,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 07:35:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:46,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:35:46,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:35:46,284 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2022-11-19 07:35:46,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:35:46,285 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:35:46,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699717404] [2022-11-19 07:35:46,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699717404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:35:46,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:35:46,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:35:46,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021338470] [2022-11-19 07:35:46,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:35:46,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:35:46,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:35:46,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:35:46,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:35:46,328 INFO L87 Difference]: Start difference. First operand has 2476 states, 1624 states have (on average 1.2543103448275863) internal successors, (2037), 1675 states have internal predecessors, (2037), 714 states have call successors, (714), 136 states have call predecessors, (714), 135 states have return successors, (709), 694 states have call predecessors, (709), 709 states have call successors, (709) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 07:35:47,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:35:47,003 INFO L93 Difference]: Finished difference Result 7311 states and 10425 transitions. [2022-11-19 07:35:47,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:35:47,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2022-11-19 07:35:47,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:35:47,073 INFO L225 Difference]: With dead ends: 7311 [2022-11-19 07:35:47,075 INFO L226 Difference]: Without dead ends: 4846 [2022-11-19 07:35:47,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:35:47,111 INFO L413 NwaCegarLoop]: 4139 mSDtfsCounter, 3349 mSDsluCounter, 3406 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3349 SdHoareTripleChecker+Valid, 7545 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:35:47,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3349 Valid, 7545 Invalid, 14 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:35:47,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4846 states. [2022-11-19 07:35:47,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4846 to 4842. [2022-11-19 07:35:47,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4842 states, 3188 states have (on average 1.2490589711417817) internal successors, (3982), 3288 states have internal predecessors, (3982), 1384 states have call successors, (1384), 268 states have call predecessors, (1384), 267 states have return successors, (1381), 1351 states have call predecessors, (1381), 1381 states have call successors, (1381) [2022-11-19 07:35:47,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4842 states to 4842 states and 6747 transitions. [2022-11-19 07:35:47,677 INFO L78 Accepts]: Start accepts. Automaton has 4842 states and 6747 transitions. Word has length 112 [2022-11-19 07:35:47,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:35:47,679 INFO L495 AbstractCegarLoop]: Abstraction has 4842 states and 6747 transitions. [2022-11-19 07:35:47,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 07:35:47,679 INFO L276 IsEmpty]: Start isEmpty. Operand 4842 states and 6747 transitions. [2022-11-19 07:35:47,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-19 07:35:47,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:47,686 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:47,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:35:47,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:47,907 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)] === [2022-11-19 07:35:47,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:47,908 INFO L85 PathProgramCache]: Analyzing trace with hash -511639146, now seen corresponding path program 1 times [2022-11-19 07:35:47,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:35:47,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292096919] [2022-11-19 07:35:47,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:47,911 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:47,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:35:47,913 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:35:47,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 07:35:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:49,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 1359 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:35:49,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:35:49,496 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2022-11-19 07:35:49,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:35:49,497 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:35:49,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292096919] [2022-11-19 07:35:49,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292096919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:35:49,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:35:49,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:35:49,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87417836] [2022-11-19 07:35:49,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:35:49,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:35:49,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:35:49,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:35:49,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:35:49,500 INFO L87 Difference]: Start difference. First operand 4842 states and 6747 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-19 07:35:50,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:35:50,211 INFO L93 Difference]: Finished difference Result 8977 states and 12390 transitions. [2022-11-19 07:35:50,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:35:50,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 117 [2022-11-19 07:35:50,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:35:50,238 INFO L225 Difference]: With dead ends: 8977 [2022-11-19 07:35:50,239 INFO L226 Difference]: Without dead ends: 4156 [2022-11-19 07:35:50,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:35:50,262 INFO L413 NwaCegarLoop]: 3706 mSDtfsCounter, 1134 mSDsluCounter, 3370 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 7076 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:35:50,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 7076 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:35:50,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4156 states. [2022-11-19 07:35:50,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4156 to 4130. [2022-11-19 07:35:50,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 2755 states have (on average 1.2355716878402905) internal successors, (3404), 2822 states have internal predecessors, (3404), 1102 states have call successors, (1102), 271 states have call predecessors, (1102), 270 states have return successors, (1099), 1081 states have call predecessors, (1099), 1099 states have call successors, (1099) [2022-11-19 07:35:50,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 5605 transitions. [2022-11-19 07:35:50,590 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 5605 transitions. Word has length 117 [2022-11-19 07:35:50,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:35:50,591 INFO L495 AbstractCegarLoop]: Abstraction has 4130 states and 5605 transitions. [2022-11-19 07:35:50,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-19 07:35:50,592 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 5605 transitions. [2022-11-19 07:35:50,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-19 07:35:50,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:50,600 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:50,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:35:50,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:50,823 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)] === [2022-11-19 07:35:50,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:50,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1776866667, now seen corresponding path program 1 times [2022-11-19 07:35:50,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:35:50,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261905075] [2022-11-19 07:35:50,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:50,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:50,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:35:50,828 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:35:50,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-19 07:35:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:52,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:35:52,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:35:52,185 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2022-11-19 07:35:52,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:35:52,185 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:35:52,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261905075] [2022-11-19 07:35:52,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261905075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:35:52,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:35:52,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:35:52,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905918052] [2022-11-19 07:35:52,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:35:52,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:35:52,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:35:52,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:35:52,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:35:52,188 INFO L87 Difference]: Start difference. First operand 4130 states and 5605 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-19 07:35:52,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:35:52,760 INFO L93 Difference]: Finished difference Result 11142 states and 15158 transitions. [2022-11-19 07:35:52,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:35:52,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 120 [2022-11-19 07:35:52,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:35:52,806 INFO L225 Difference]: With dead ends: 11142 [2022-11-19 07:35:52,806 INFO L226 Difference]: Without dead ends: 7033 [2022-11-19 07:35:52,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:35:52,828 INFO L413 NwaCegarLoop]: 4420 mSDtfsCounter, 3302 mSDsluCounter, 3230 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3302 SdHoareTripleChecker+Valid, 7650 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:35:52,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3302 Valid, 7650 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:35:52,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7033 states. [2022-11-19 07:35:53,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7033 to 6999. [2022-11-19 07:35:53,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6999 states, 4677 states have (on average 1.2386144964720975) internal successors, (5793), 4799 states have internal predecessors, (5793), 1859 states have call successors, (1859), 465 states have call predecessors, (1859), 460 states have return successors, (1875), 1811 states have call predecessors, (1875), 1856 states have call successors, (1875) [2022-11-19 07:35:53,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6999 states to 6999 states and 9527 transitions. [2022-11-19 07:35:53,297 INFO L78 Accepts]: Start accepts. Automaton has 6999 states and 9527 transitions. Word has length 120 [2022-11-19 07:35:53,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:35:53,297 INFO L495 AbstractCegarLoop]: Abstraction has 6999 states and 9527 transitions. [2022-11-19 07:35:53,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-19 07:35:53,299 INFO L276 IsEmpty]: Start isEmpty. Operand 6999 states and 9527 transitions. [2022-11-19 07:35:53,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-19 07:35:53,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:53,302 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:53,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:35:53,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:53,523 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)] === [2022-11-19 07:35:53,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:53,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1614488991, now seen corresponding path program 1 times [2022-11-19 07:35:53,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:35:53,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177254689] [2022-11-19 07:35:53,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:53,527 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:53,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:35:53,528 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:35:53,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-19 07:35:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:54,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 1378 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:35:54,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:35:54,955 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2022-11-19 07:35:54,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:35:54,955 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:35:54,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177254689] [2022-11-19 07:35:54,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177254689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:35:54,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:35:54,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:35:54,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715076080] [2022-11-19 07:35:54,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:35:54,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:35:54,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:35:54,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:35:54,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:35:54,957 INFO L87 Difference]: Start difference. First operand 6999 states and 9527 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:35:55,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:35:55,882 INFO L93 Difference]: Finished difference Result 17778 states and 24306 transitions. [2022-11-19 07:35:55,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:35:55,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 135 [2022-11-19 07:35:55,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:35:55,981 INFO L225 Difference]: With dead ends: 17778 [2022-11-19 07:35:55,981 INFO L226 Difference]: Without dead ends: 10800 [2022-11-19 07:35:56,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:35:56,017 INFO L413 NwaCegarLoop]: 4058 mSDtfsCounter, 2951 mSDsluCounter, 3351 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2951 SdHoareTripleChecker+Valid, 7409 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:35:56,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2951 Valid, 7409 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:35:56,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10800 states. [2022-11-19 07:35:56,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10800 to 10765. [2022-11-19 07:35:56,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10765 states, 7140 states have (on average 1.2380952380952381) internal successors, (8840), 7369 states have internal predecessors, (8840), 2931 states have call successors, (2931), 701 states have call predecessors, (2931), 691 states have return successors, (2968), 2832 states have call predecessors, (2968), 2928 states have call successors, (2968) [2022-11-19 07:35:56,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10765 states to 10765 states and 14739 transitions. [2022-11-19 07:35:56,800 INFO L78 Accepts]: Start accepts. Automaton has 10765 states and 14739 transitions. Word has length 135 [2022-11-19 07:35:56,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:35:56,802 INFO L495 AbstractCegarLoop]: Abstraction has 10765 states and 14739 transitions. [2022-11-19 07:35:56,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:35:56,803 INFO L276 IsEmpty]: Start isEmpty. Operand 10765 states and 14739 transitions. [2022-11-19 07:35:56,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-19 07:35:56,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:56,808 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:56,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:35:57,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:57,032 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:35:57,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:57,032 INFO L85 PathProgramCache]: Analyzing trace with hash 875036462, now seen corresponding path program 1 times [2022-11-19 07:35:57,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:35:57,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027244384] [2022-11-19 07:35:57,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:57,035 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:57,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:35:57,037 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:35:57,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-19 07:35:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:58,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:35:58,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:35:58,425 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-11-19 07:35:58,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:35:58,426 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:35:58,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027244384] [2022-11-19 07:35:58,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027244384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:35:58,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:35:58,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:35:58,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186032760] [2022-11-19 07:35:58,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:35:58,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:35:58,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:35:58,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:35:58,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:35:58,429 INFO L87 Difference]: Start difference. First operand 10765 states and 14739 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:35:59,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:35:59,617 INFO L93 Difference]: Finished difference Result 31774 states and 43558 transitions. [2022-11-19 07:35:59,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:35:59,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 164 [2022-11-19 07:35:59,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:35:59,728 INFO L225 Difference]: With dead ends: 31774 [2022-11-19 07:35:59,729 INFO L226 Difference]: Without dead ends: 21095 [2022-11-19 07:35:59,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:35:59,770 INFO L413 NwaCegarLoop]: 4258 mSDtfsCounter, 3354 mSDsluCounter, 3406 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3354 SdHoareTripleChecker+Valid, 7664 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:35:59,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3354 Valid, 7664 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:35:59,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21095 states. [2022-11-19 07:36:01,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21095 to 21072. [2022-11-19 07:36:01,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21072 states, 13976 states have (on average 1.239768174012593) internal successors, (17327), 14412 states have internal predecessors, (17327), 5739 states have call successors, (5739), 1373 states have call predecessors, (5739), 1354 states have return successors, (5816), 5562 states have call predecessors, (5816), 5736 states have call successors, (5816) [2022-11-19 07:36:01,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21072 states to 21072 states and 28882 transitions. [2022-11-19 07:36:01,172 INFO L78 Accepts]: Start accepts. Automaton has 21072 states and 28882 transitions. Word has length 164 [2022-11-19 07:36:01,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:36:01,173 INFO L495 AbstractCegarLoop]: Abstraction has 21072 states and 28882 transitions. [2022-11-19 07:36:01,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:36:01,173 INFO L276 IsEmpty]: Start isEmpty. Operand 21072 states and 28882 transitions. [2022-11-19 07:36:01,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-19 07:36:01,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:01,177 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:01,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:36:01,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:36:01,391 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)] === [2022-11-19 07:36:01,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:01,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1297738288, now seen corresponding path program 1 times [2022-11-19 07:36:01,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:36:01,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859336362] [2022-11-19 07:36:01,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:01,393 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:36:01,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:36:01,395 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:36:01,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-19 07:36:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:02,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:36:02,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:36:03,559 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-19 07:36:03,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:36:03,559 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:36:03,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859336362] [2022-11-19 07:36:03,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [859336362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:36:03,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:36:03,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:36:03,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603786672] [2022-11-19 07:36:03,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:36:03,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:36:03,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:36:03,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:36:03,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:36:03,562 INFO L87 Difference]: Start difference. First operand 21072 states and 28882 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-19 07:36:05,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:36:05,112 INFO L93 Difference]: Finished difference Result 21078 states and 28887 transitions. [2022-11-19 07:36:05,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:36:05,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 164 [2022-11-19 07:36:05,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:36:05,207 INFO L225 Difference]: With dead ends: 21078 [2022-11-19 07:36:05,207 INFO L226 Difference]: Without dead ends: 21076 [2022-11-19 07:36:05,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:36:05,218 INFO L413 NwaCegarLoop]: 3429 mSDtfsCounter, 3358 mSDsluCounter, 6845 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3359 SdHoareTripleChecker+Valid, 10274 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:36:05,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3359 Valid, 10274 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:36:05,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21076 states. [2022-11-19 07:36:06,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21076 to 21076. [2022-11-19 07:36:06,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21076 states, 13979 states have (on average 1.239716717934044) internal successors, (17330), 14415 states have internal predecessors, (17330), 5739 states have call successors, (5739), 1374 states have call predecessors, (5739), 1355 states have return successors, (5816), 5562 states have call predecessors, (5816), 5736 states have call successors, (5816) [2022-11-19 07:36:06,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21076 states to 21076 states and 28885 transitions. [2022-11-19 07:36:06,747 INFO L78 Accepts]: Start accepts. Automaton has 21076 states and 28885 transitions. Word has length 164 [2022-11-19 07:36:06,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:36:06,747 INFO L495 AbstractCegarLoop]: Abstraction has 21076 states and 28885 transitions. [2022-11-19 07:36:06,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-19 07:36:06,748 INFO L276 IsEmpty]: Start isEmpty. Operand 21076 states and 28885 transitions. [2022-11-19 07:36:06,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-19 07:36:06,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:06,751 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:06,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:36:06,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:36:06,965 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)] === [2022-11-19 07:36:06,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:06,966 INFO L85 PathProgramCache]: Analyzing trace with hash -690573043, now seen corresponding path program 1 times [2022-11-19 07:36:06,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:36:06,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870344161] [2022-11-19 07:36:06,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:06,967 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:36:06,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:36:06,969 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:36:07,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-19 07:36:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:08,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:36:08,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:36:09,471 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-19 07:36:09,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:36:09,990 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-19 07:36:09,991 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:36:09,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870344161] [2022-11-19 07:36:09,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870344161] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 07:36:09,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:36:09,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-19 07:36:09,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904388326] [2022-11-19 07:36:09,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:36:09,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:36:09,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:36:09,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:36:09,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:36:09,993 INFO L87 Difference]: Start difference. First operand 21076 states and 28885 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:36:11,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:36:11,837 INFO L93 Difference]: Finished difference Result 21792 states and 29638 transitions. [2022-11-19 07:36:11,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:36:11,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 169 [2022-11-19 07:36:11,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:36:11,936 INFO L225 Difference]: With dead ends: 21792 [2022-11-19 07:36:11,937 INFO L226 Difference]: Without dead ends: 21790 [2022-11-19 07:36:11,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:36:11,951 INFO L413 NwaCegarLoop]: 3467 mSDtfsCounter, 3339 mSDsluCounter, 7060 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3350 SdHoareTripleChecker+Valid, 10527 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:36:11,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3350 Valid, 10527 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:36:11,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21790 states. [2022-11-19 07:36:13,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21790 to 21786. [2022-11-19 07:36:13,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21786 states, 14396 states have (on average 1.2349958321756043) internal successors, (17779), 14848 states have internal predecessors, (17779), 5889 states have call successors, (5889), 1517 states have call predecessors, (5889), 1498 states have return successors, (5966), 5712 states have call predecessors, (5966), 5886 states have call successors, (5966) [2022-11-19 07:36:13,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21786 states to 21786 states and 29634 transitions. [2022-11-19 07:36:13,526 INFO L78 Accepts]: Start accepts. Automaton has 21786 states and 29634 transitions. Word has length 169 [2022-11-19 07:36:13,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:36:13,527 INFO L495 AbstractCegarLoop]: Abstraction has 21786 states and 29634 transitions. [2022-11-19 07:36:13,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:36:13,527 INFO L276 IsEmpty]: Start isEmpty. Operand 21786 states and 29634 transitions. [2022-11-19 07:36:13,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-19 07:36:13,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:13,530 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:13,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:36:13,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:36:13,747 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)] === [2022-11-19 07:36:13,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:13,747 INFO L85 PathProgramCache]: Analyzing trace with hash 866239504, now seen corresponding path program 1 times [2022-11-19 07:36:13,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:36:13,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540854783] [2022-11-19 07:36:13,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:13,749 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:36:13,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:36:13,751 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:36:13,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-19 07:36:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:15,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 1423 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:36:15,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:36:16,101 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2022-11-19 07:36:16,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:36:16,620 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2022-11-19 07:36:16,620 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:36:16,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540854783] [2022-11-19 07:36:16,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540854783] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 07:36:16,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:36:16,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-19 07:36:16,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025004507] [2022-11-19 07:36:16,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:36:16,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:36:16,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:36:16,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:36:16,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:36:16,623 INFO L87 Difference]: Start difference. First operand 21786 states and 29634 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-19 07:36:18,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:36:18,769 INFO L93 Difference]: Finished difference Result 21792 states and 29639 transitions. [2022-11-19 07:36:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:36:18,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 174 [2022-11-19 07:36:18,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:36:18,868 INFO L225 Difference]: With dead ends: 21792 [2022-11-19 07:36:18,868 INFO L226 Difference]: Without dead ends: 21790 [2022-11-19 07:36:18,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:36:18,882 INFO L413 NwaCegarLoop]: 3432 mSDtfsCounter, 3374 mSDsluCounter, 6844 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3384 SdHoareTripleChecker+Valid, 10276 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:36:18,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3384 Valid, 10276 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:36:18,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21790 states. [2022-11-19 07:36:20,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21790 to 21790. [2022-11-19 07:36:20,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21790 states, 14399 states have (on average 1.2349468713105076) internal successors, (17782), 14851 states have internal predecessors, (17782), 5889 states have call successors, (5889), 1518 states have call predecessors, (5889), 1499 states have return successors, (5966), 5712 states have call predecessors, (5966), 5886 states have call successors, (5966) [2022-11-19 07:36:20,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21790 states to 21790 states and 29637 transitions. [2022-11-19 07:36:20,652 INFO L78 Accepts]: Start accepts. Automaton has 21790 states and 29637 transitions. Word has length 174 [2022-11-19 07:36:20,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:36:20,653 INFO L495 AbstractCegarLoop]: Abstraction has 21790 states and 29637 transitions. [2022-11-19 07:36:20,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-19 07:36:20,653 INFO L276 IsEmpty]: Start isEmpty. Operand 21790 states and 29637 transitions. [2022-11-19 07:36:20,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-19 07:36:20,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:20,657 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:20,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-19 07:36:20,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:36:20,879 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:36:20,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:20,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1115286392, now seen corresponding path program 1 times [2022-11-19 07:36:20,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:36:20,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462329851] [2022-11-19 07:36:20,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:20,881 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:36:20,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:36:20,883 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:36:20,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-19 07:36:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:22,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 1497 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:36:22,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:36:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-11-19 07:36:22,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:36:22,529 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:36:22,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462329851] [2022-11-19 07:36:22,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462329851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:36:22,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:36:22,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:36:22,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151349132] [2022-11-19 07:36:22,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:36:22,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:36:22,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:36:22,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:36:22,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:36:22,531 INFO L87 Difference]: Start difference. First operand 21790 states and 29637 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:36:25,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:36:25,400 INFO L93 Difference]: Finished difference Result 47753 states and 64648 transitions. [2022-11-19 07:36:25,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:36:25,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 177 [2022-11-19 07:36:25,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:36:25,505 INFO L225 Difference]: With dead ends: 47753 [2022-11-19 07:36:25,505 INFO L226 Difference]: Without dead ends: 26049 [2022-11-19 07:36:25,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:36:25,712 INFO L413 NwaCegarLoop]: 4527 mSDtfsCounter, 1125 mSDsluCounter, 3366 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 7893 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:36:25,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 7893 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:36:25,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26049 states. [2022-11-19 07:36:27,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26049 to 26008. [2022-11-19 07:36:27,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26008 states, 17269 states have (on average 1.2283282181944526) internal successors, (21212), 17765 states have internal predecessors, (21212), 6829 states have call successors, (6829), 1926 states have call predecessors, (6829), 1907 states have return successors, (6906), 6640 states have call predecessors, (6906), 6826 states have call successors, (6906) [2022-11-19 07:36:27,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26008 states to 26008 states and 34947 transitions. [2022-11-19 07:36:27,943 INFO L78 Accepts]: Start accepts. Automaton has 26008 states and 34947 transitions. Word has length 177 [2022-11-19 07:36:27,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:36:27,944 INFO L495 AbstractCegarLoop]: Abstraction has 26008 states and 34947 transitions. [2022-11-19 07:36:27,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:36:27,944 INFO L276 IsEmpty]: Start isEmpty. Operand 26008 states and 34947 transitions. [2022-11-19 07:36:27,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-19 07:36:27,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:27,947 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 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] [2022-11-19 07:36:27,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-19 07:36:28,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:36:28,172 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)] === [2022-11-19 07:36:28,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:28,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1895419219, now seen corresponding path program 1 times [2022-11-19 07:36:28,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:36:28,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665368769] [2022-11-19 07:36:28,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:28,175 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:36:28,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:36:28,176 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:36:28,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-19 07:36:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:29,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:36:29,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:36:30,396 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2022-11-19 07:36:30,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:36:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2022-11-19 07:36:30,939 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:36:30,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665368769] [2022-11-19 07:36:30,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665368769] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 07:36:30,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:36:30,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-19 07:36:30,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982233681] [2022-11-19 07:36:30,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:36:30,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:36:30,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:36:30,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:36:30,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:36:30,941 INFO L87 Difference]: Start difference. First operand 26008 states and 34947 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-19 07:36:33,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:36:33,117 INFO L93 Difference]: Finished difference Result 26014 states and 34952 transitions. [2022-11-19 07:36:33,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:36:33,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 179 [2022-11-19 07:36:33,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:36:33,233 INFO L225 Difference]: With dead ends: 26014 [2022-11-19 07:36:33,233 INFO L226 Difference]: Without dead ends: 26012 [2022-11-19 07:36:33,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:36:33,249 INFO L413 NwaCegarLoop]: 3432 mSDtfsCounter, 3374 mSDsluCounter, 6844 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3383 SdHoareTripleChecker+Valid, 10276 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:36:33,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3383 Valid, 10276 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:36:33,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26012 states. [2022-11-19 07:36:35,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26012 to 26012. [2022-11-19 07:36:35,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26012 states, 17272 states have (on average 1.2282885595182955) internal successors, (21215), 17768 states have internal predecessors, (21215), 6829 states have call successors, (6829), 1927 states have call predecessors, (6829), 1908 states have return successors, (6906), 6640 states have call predecessors, (6906), 6826 states have call successors, (6906) [2022-11-19 07:36:35,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26012 states to 26012 states and 34950 transitions. [2022-11-19 07:36:35,803 INFO L78 Accepts]: Start accepts. Automaton has 26012 states and 34950 transitions. Word has length 179 [2022-11-19 07:36:35,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:36:35,804 INFO L495 AbstractCegarLoop]: Abstraction has 26012 states and 34950 transitions. [2022-11-19 07:36:35,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-19 07:36:35,805 INFO L276 IsEmpty]: Start isEmpty. Operand 26012 states and 34950 transitions. [2022-11-19 07:36:35,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-19 07:36:35,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:35,808 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:35,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-19 07:36:36,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:36:36,008 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)] === [2022-11-19 07:36:36,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:36,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1933342192, now seen corresponding path program 1 times [2022-11-19 07:36:36,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:36:36,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898098663] [2022-11-19 07:36:36,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:36,011 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:36:36,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:36:36,018 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:36:36,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34264b27-dedf-4c09-9c1f-03b09e309e8e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-19 07:36:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:37,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:36:37,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:36:38,258 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-11-19 07:36:38,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:36:38,767 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-11-19 07:36:38,767 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:36:38,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898098663] [2022-11-19 07:36:38,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898098663] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 07:36:38,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:36:38,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-19 07:36:38,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923030400] [2022-11-19 07:36:38,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:36:38,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:36:38,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:36:38,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:36:38,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:36:38,770 INFO L87 Difference]: Start difference. First operand 26012 states and 34950 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-19 07:36:41,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:36:41,263 INFO L93 Difference]: Finished difference Result 26676 states and 35548 transitions. [2022-11-19 07:36:41,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:36:41,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 184 [2022-11-19 07:36:41,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:36:41,362 INFO L225 Difference]: With dead ends: 26676 [2022-11-19 07:36:41,362 INFO L226 Difference]: Without dead ends: 26674 [2022-11-19 07:36:41,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:36:41,376 INFO L413 NwaCegarLoop]: 3461 mSDtfsCounter, 2039 mSDsluCounter, 8279 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2047 SdHoareTripleChecker+Valid, 11740 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:36:41,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2047 Valid, 11740 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:36:41,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states.