./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.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_1263eea5-2560-4a59-a2a4-244af4953d0f/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1263eea5-2560-4a59-a2a4-244af4953d0f/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_1263eea5-2560-4a59-a2a4-244af4953d0f/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1263eea5-2560-4a59-a2a4-244af4953d0f/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1263eea5-2560-4a59-a2a4-244af4953d0f/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_1263eea5-2560-4a59-a2a4-244af4953d0f/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 adae9e973a71be7ae6bae40bd619f2dd42436469ca3cae3ee4a6c75222eea08e --- 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 08:18:32,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:18:32,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:18:32,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:18:32,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:18:32,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:18:32,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:18:32,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:18:32,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:18:32,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:18:32,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:18:32,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:18:32,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:18:32,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:18:32,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:18:32,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:18:32,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:18:32,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:18:32,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:18:32,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:18:32,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:18:32,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:18:32,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:18:32,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:18:32,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:18:32,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:18:32,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:18:32,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:18:32,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:18:32,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:18:32,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:18:32,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:18:32,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:18:32,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:18:32,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:18:32,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:18:32,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:18:32,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:18:32,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:18:32,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:18:32,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:18:32,667 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1263eea5-2560-4a59-a2a4-244af4953d0f/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:18:32,725 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:18:32,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:18:32,726 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:18:32,726 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:18:32,727 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:18:32,728 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:18:32,728 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:18:32,728 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:18:32,728 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:18:32,729 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:18:32,730 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:18:32,730 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:18:32,731 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:18:32,731 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:18:32,731 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:18:32,732 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:18:32,732 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:18:32,732 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:18:32,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:18:32,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:18:32,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:18:32,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:18:32,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:18:32,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:18:32,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:18:32,735 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:18:32,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:18:32,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:18:32,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:18:32,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:18:32,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:18:32,737 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:18:32,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:18:32,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:18:32,738 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:18:32,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:18:32,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:18:32,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:18:32,739 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_1263eea5-2560-4a59-a2a4-244af4953d0f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1263eea5-2560-4a59-a2a4-244af4953d0f/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adae9e973a71be7ae6bae40bd619f2dd42436469ca3cae3ee4a6c75222eea08e [2022-11-19 08:18:33,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:18:33,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:18:33,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:18:33,173 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:18:33,174 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:18:33,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1263eea5-2560-4a59-a2a4-244af4953d0f/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2022-11-19 08:18:33,286 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1263eea5-2560-4a59-a2a4-244af4953d0f/bin/utaipan-I9t0OCRTmS/data/f853656f8/3136d32dc78f46919180573cc5905d65/FLAGe12c722b4 [2022-11-19 08:18:34,944 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:18:34,945 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1263eea5-2560-4a59-a2a4-244af4953d0f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2022-11-19 08:18:35,029 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1263eea5-2560-4a59-a2a4-244af4953d0f/bin/utaipan-I9t0OCRTmS/data/f853656f8/3136d32dc78f46919180573cc5905d65/FLAGe12c722b4 [2022-11-19 08:18:35,335 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1263eea5-2560-4a59-a2a4-244af4953d0f/bin/utaipan-I9t0OCRTmS/data/f853656f8/3136d32dc78f46919180573cc5905d65 [2022-11-19 08:18:35,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:18:35,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:18:35,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:18:35,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:18:35,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:18:35,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:18:35" (1/1) ... [2022-11-19 08:18:35,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60df5c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:35, skipping insertion in model container [2022-11-19 08:18:35,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:18:35" (1/1) ... [2022-11-19 08:18:35,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:18:35,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:18:44,385 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_1263eea5-2560-4a59-a2a4-244af4953d0f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[772474,772487] [2022-11-19 08:18:44,393 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_1263eea5-2560-4a59-a2a4-244af4953d0f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[772643,772656] [2022-11-19 08:18:44,394 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_1263eea5-2560-4a59-a2a4-244af4953d0f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[772810,772823] [2022-11-19 08:18:44,395 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_1263eea5-2560-4a59-a2a4-244af4953d0f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[772978,772991] [2022-11-19 08:18:44,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:18:44,599 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:18:45,629 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_1263eea5-2560-4a59-a2a4-244af4953d0f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[772474,772487] [2022-11-19 08:18:45,630 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_1263eea5-2560-4a59-a2a4-244af4953d0f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[772643,772656] [2022-11-19 08:18:45,631 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_1263eea5-2560-4a59-a2a4-244af4953d0f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[772810,772823] [2022-11-19 08:18:45,633 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_1263eea5-2560-4a59-a2a4-244af4953d0f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[772978,772991] [2022-11-19 08:18:45,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:18:46,098 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:18:46,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:46 WrapperNode [2022-11-19 08:18:46,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:18:46,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:18:46,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:18:46,101 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:18:46,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:46" (1/1) ... [2022-11-19 08:18:46,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:46" (1/1) ... [2022-11-19 08:18:47,073 INFO L138 Inliner]: procedures = 710, calls = 11840, calls flagged for inlining = 309, calls inlined = 228, statements flattened = 12379 [2022-11-19 08:18:47,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:18:47,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:18:47,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:18:47,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:18:47,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:46" (1/1) ... [2022-11-19 08:18:47,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:46" (1/1) ... [2022-11-19 08:18:47,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:46" (1/1) ... [2022-11-19 08:18:47,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:46" (1/1) ... [2022-11-19 08:18:47,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:46" (1/1) ... [2022-11-19 08:18:47,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:46" (1/1) ... [2022-11-19 08:18:47,888 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:46" (1/1) ... [2022-11-19 08:18:47,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:46" (1/1) ... [2022-11-19 08:18:48,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:18:48,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:18:48,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:18:48,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:18:48,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:46" (1/1) ... [2022-11-19 08:18:48,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:18:48,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1263eea5-2560-4a59-a2a4-244af4953d0f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:18:48,085 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1263eea5-2560-4a59-a2a4-244af4953d0f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:18:48,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1263eea5-2560-4a59-a2a4-244af4953d0f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:18:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-19 08:18:48,140 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-19 08:18:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 08:18:48,141 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 08:18:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure read_register [2022-11-19 08:18:48,141 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register [2022-11-19 08:18:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_data [2022-11-19 08:18:48,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_data [2022-11-19 08:18:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure write_register_byte [2022-11-19 08:18:48,288 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register_byte [2022-11-19 08:18:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:18:48,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:18:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-19 08:18:48,288 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-19 08:18:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2022-11-19 08:18:48,288 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2022-11-19 08:18:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_release_firmware [2022-11-19 08:18:48,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_release_firmware [2022-11-19 08:18:48,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_78 [2022-11-19 08:18:48,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_78 [2022-11-19 08:18:48,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 08:18:48,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 08:18:48,289 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_configure_security [2022-11-19 08:18:48,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_configure_security [2022-11-19 08:18:48,289 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 08:18:48,289 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 08:18:48,290 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-19 08:18:48,290 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-19 08:18:48,290 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_adapter [2022-11-19 08:18:48,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_adapter [2022-11-19 08:18:48,290 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_security_information [2022-11-19 08:18:48,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_security_information [2022-11-19 08:18:48,290 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-19 08:18:48,290 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-19 08:18:48,291 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 08:18:48,291 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 08:18:48,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 08:18:48,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 08:18:48,291 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 08:18:48,291 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 08:18:48,291 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 08:18:48,291 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 08:18:48,291 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mandatory_bssid [2022-11-19 08:18:48,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mandatory_bssid [2022-11-19 08:18:48,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 08:18:48,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 08:18:48,292 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_rfkill_set_hw_state [2022-11-19 08:18:48,292 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_rfkill_set_hw_state [2022-11-19 08:18:48,292 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_unregister [2022-11-19 08:18:48,292 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_unregister [2022-11-19 08:18:48,292 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_adapter [2022-11-19 08:18:48,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_adapter [2022-11-19 08:18:48,293 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-19 08:18:48,293 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-19 08:18:48,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:18:48,293 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_send_command [2022-11-19 08:18:48,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_send_command [2022-11-19 08:18:48,293 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-19 08:18:48,293 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-19 08:18:48,293 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_word [2022-11-19 08:18:48,294 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_word [2022-11-19 08:18:48,294 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 08:18:48,294 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 08:18:48,294 INFO L130 BoogieDeclarations]: Found specification of procedure isr_scan_complete [2022-11-19 08:18:48,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_scan_complete [2022-11-19 08:18:48,294 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_power_mode [2022-11-19 08:18:48,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_power_mode [2022-11-19 08:18:48,297 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 08:18:48,297 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 08:18:48,297 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_byte [2022-11-19 08:18:48,297 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_byte [2022-11-19 08:18:48,297 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2022-11-19 08:18:48,298 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2022-11-19 08:18:48,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 08:18:48,298 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 08:18:48,298 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 08:18:48,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-19 08:18:48,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-19 08:18:48,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 08:18:48,300 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_dword [2022-11-19 08:18:48,300 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_dword [2022-11-19 08:18:48,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 08:18:48,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 08:18:48,301 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_channel [2022-11-19 08:18:48,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_channel [2022-11-19 08:18:48,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:18:48,303 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 08:18:48,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 08:18:48,304 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_up [2022-11-19 08:18:48,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_up [2022-11-19 08:18:48,304 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_commands [2022-11-19 08:18:48,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_commands [2022-11-19 08:18:48,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 08:18:48,305 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 08:18:48,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-19 08:18:48,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-19 08:18:48,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 08:18:48,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 08:18:48,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 08:18:48,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 08:18:48,307 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-19 08:18:48,307 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-19 08:18:48,307 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-19 08:18:48,308 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-19 08:18:48,309 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_adapter [2022-11-19 08:18:48,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_adapter [2022-11-19 08:18:48,313 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-19 08:18:48,313 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-19 08:18:48,313 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_scan_options [2022-11-19 08:18:48,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_scan_options [2022-11-19 08:18:48,314 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_txb_free [2022-11-19 08:18:48,316 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_txb_free [2022-11-19 08:18:48,316 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_fatalerror [2022-11-19 08:18:48,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_fatalerror [2022-11-19 08:18:48,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 08:18:48,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 08:18:48,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:18:48,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:18:48,322 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_rates [2022-11-19 08:18:48,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_rates [2022-11-19 08:18:48,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 08:18:48,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 08:18:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure print_ssid [2022-11-19 08:18:48,323 INFO L138 BoogieDeclarations]: Found implementation of procedure print_ssid [2022-11-19 08:18:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 08:18:48,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 08:18:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:18:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-11-19 08:18:48,324 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-11-19 08:18:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 08:18:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_snapshot_free [2022-11-19 08:18:48,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_snapshot_free [2022-11-19 08:18:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:18:48,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:18:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure snprint_line [2022-11-19 08:18:48,325 INFO L138 BoogieDeclarations]: Found implementation of procedure snprint_line [2022-11-19 08:18:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-19 08:18:48,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-19 08:18:48,326 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_reset [2022-11-19 08:18:48,326 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_reset [2022-11-19 08:18:48,326 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-19 08:18:48,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-19 08:18:48,326 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-19 08:18:48,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-19 08:18:48,327 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 08:18:48,327 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 08:18:48,327 INFO L130 BoogieDeclarations]: Found specification of procedure sw_reset_and_clock [2022-11-19 08:18:48,327 INFO L138 BoogieDeclarations]: Found implementation of procedure sw_reset_and_clock [2022-11-19 08:18:48,327 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_interrupts [2022-11-19 08:18:48,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_interrupts [2022-11-19 08:18:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2022-11-19 08:18:48,328 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2022-11-19 08:18:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_resume [2022-11-19 08:18:48,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_resume [2022-11-19 08:18:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2022-11-19 08:18:48,329 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2022-11-19 08:18:48,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:18:48,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:18:48,329 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_send_event [2022-11-19 08:18:48,329 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_send_event [2022-11-19 08:18:48,329 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_pci_remove_one [2022-11-19 08:18:48,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_pci_remove_one [2022-11-19 08:18:48,330 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_free [2022-11-19 08:18:48,330 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_free [2022-11-19 08:18:48,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-19 08:18:48,331 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-19 08:18:48,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 08:18:48,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 08:18:48,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 08:18:48,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 08:18:48,333 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_alloc_skb [2022-11-19 08:18:48,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_alloc_skb [2022-11-19 08:18:48,333 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2022-11-19 08:18:48,333 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2022-11-19 08:18:48,333 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_get_ordinal [2022-11-19 08:18:48,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_get_ordinal [2022-11-19 08:18:48,334 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_stop_adapter [2022-11-19 08:18:48,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_stop_adapter [2022-11-19 08:18:48,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 08:18:48,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 08:18:48,334 INFO L130 BoogieDeclarations]: Found specification of procedure write_register [2022-11-19 08:18:48,335 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register [2022-11-19 08:18:48,335 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_set_gpio [2022-11-19 08:18:48,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_set_gpio [2022-11-19 08:18:48,336 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 08:18:48,336 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 08:18:48,336 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_down [2022-11-19 08:18:48,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_down [2022-11-19 08:18:48,337 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_close [2022-11-19 08:18:48,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_close [2022-11-19 08:18:48,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_low_lock_of_ipw2100_priv [2022-11-19 08:18:48,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_low_lock_of_ipw2100_priv [2022-11-19 08:18:48,337 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_wait_for_card_state [2022-11-19 08:18:48,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_wait_for_card_state [2022-11-19 08:18:48,338 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_rf_kill [2022-11-19 08:18:48,339 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_rf_kill [2022-11-19 08:18:48,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-19 08:18:48,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-19 08:18:48,339 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 08:18:48,339 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 08:18:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure read_register_byte [2022-11-19 08:18:48,340 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register_byte [2022-11-19 08:18:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure status_queue_free [2022-11-19 08:18:48,340 INFO L138 BoogieDeclarations]: Found implementation of procedure status_queue_free [2022-11-19 08:18:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-19 08:18:48,340 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-19 08:18:48,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 08:18:48,341 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 08:18:48,341 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 08:18:48,341 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 08:18:48,341 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_rx_free [2022-11-19 08:18:48,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_rx_free [2022-11-19 08:18:48,342 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-19 08:18:48,342 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-19 08:18:48,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2022-11-19 08:18:48,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2022-11-19 08:18:48,342 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-19 08:18:48,343 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-19 08:18:48,343 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-19 08:18:48,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-19 08:18:48,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:18:48,343 INFO L130 BoogieDeclarations]: Found specification of procedure mod_delayed_work [2022-11-19 08:18:48,343 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_delayed_work [2022-11-19 08:18:48,344 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 08:18:48,344 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 08:18:48,344 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_shutdown [2022-11-19 08:18:48,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_shutdown [2022-11-19 08:18:48,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:18:48,344 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_word [2022-11-19 08:18:48,345 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_word [2022-11-19 08:18:48,345 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_association_lost [2022-11-19 08:18:48,346 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_association_lost [2022-11-19 08:18:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_free [2022-11-19 08:18:48,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_free [2022-11-19 08:18:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mac_address [2022-11-19 08:18:48,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mac_address [2022-11-19 08:18:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_essid [2022-11-19 08:18:48,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_essid [2022-11-19 08:18:48,352 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-19 08:18:48,352 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-19 08:18:48,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:18:48,352 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_interrupts [2022-11-19 08:18:48,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_interrupts [2022-11-19 08:18:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-19 08:18:48,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-19 08:18:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_rts_threshold [2022-11-19 08:18:48,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_rts_threshold [2022-11-19 08:18:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_byte [2022-11-19 08:18:48,357 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_byte [2022-11-19 08:18:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-19 08:18:48,357 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-19 08:18:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 08:18:48,358 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 08:18:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure free_libipw [2022-11-19 08:18:48,358 INFO L138 BoogieDeclarations]: Found implementation of procedure free_libipw [2022-11-19 08:18:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 08:18:48,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 08:18:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-19 08:18:48,359 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-19 08:18:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-19 08:18:48,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-19 08:18:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_msg_free [2022-11-19 08:18:48,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_msg_free [2022-11-19 08:18:48,360 INFO L130 BoogieDeclarations]: Found specification of procedure printk_buf [2022-11-19 08:18:48,360 INFO L138 BoogieDeclarations]: Found implementation of procedure printk_buf [2022-11-19 08:18:48,360 INFO L130 BoogieDeclarations]: Found specification of procedure ipw_ethtool_get_drvinfo [2022-11-19 08:18:48,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw_ethtool_get_drvinfo [2022-11-19 08:18:48,360 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2022-11-19 08:18:48,360 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2022-11-19 08:18:48,361 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_power [2022-11-19 08:18:48,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_power [2022-11-19 08:18:48,361 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-19 08:18:48,361 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-19 08:18:48,361 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2022-11-19 08:18:48,361 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2022-11-19 08:18:48,361 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-19 08:18:48,362 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-19 08:18:48,362 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-19 08:18:48,362 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-19 08:18:48,362 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_system_config [2022-11-19 08:18:48,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_system_config [2022-11-19 08:18:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_kill_works [2022-11-19 08:18:48,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_kill_works [2022-11-19 08:18:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2022-11-19 08:18:48,363 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2022-11-19 08:18:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 08:18:48,363 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 08:18:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:18:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_free [2022-11-19 08:18:48,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_free [2022-11-19 08:18:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:18:48,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:18:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure rf_kill_active [2022-11-19 08:18:48,364 INFO L138 BoogieDeclarations]: Found implementation of procedure rf_kill_active [2022-11-19 08:18:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure get_seconds [2022-11-19 08:18:48,365 INFO L138 BoogieDeclarations]: Found implementation of procedure get_seconds [2022-11-19 08:18:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-19 08:18:48,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-19 08:18:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_allocate [2022-11-19 08:18:48,365 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_allocate [2022-11-19 08:18:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 08:18:48,366 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 08:18:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_priv [2022-11-19 08:18:48,366 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_priv [2022-11-19 08:18:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_91 [2022-11-19 08:18:48,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_91 [2022-11-19 08:18:48,367 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-19 08:18:48,367 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-19 08:18:48,367 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-19 08:18:48,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-19 08:18:48,367 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_timeout [2022-11-19 08:18:48,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_timeout [2022-11-19 08:18:48,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 08:18:48,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 08:18:48,368 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-19 08:18:48,368 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-19 08:18:48,368 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-19 08:18:48,368 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-19 08:18:48,369 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-19 08:18:48,369 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-19 08:18:48,369 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-19 08:18:48,369 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-19 08:18:48,369 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_open [2022-11-19 08:18:48,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_open [2022-11-19 08:18:48,370 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-19 08:18:48,370 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-19 08:18:48,370 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_initialize [2022-11-19 08:18:48,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_initialize [2022-11-19 08:18:48,370 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2022-11-19 08:18:48,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_low_lock_of_ipw2100_priv [2022-11-19 08:18:48,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_low_lock_of_ipw2100_priv [2022-11-19 08:18:48,371 INFO L130 BoogieDeclarations]: Found specification of procedure pm_qos_update_request [2022-11-19 08:18:48,371 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_qos_update_request [2022-11-19 08:18:48,371 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_associated [2022-11-19 08:18:48,371 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_associated [2022-11-19 08:18:48,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:18:48,372 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_scanning [2022-11-19 08:18:48,372 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_scanning [2022-11-19 08:18:48,372 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_dword [2022-11-19 08:18:48,372 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_dword [2022-11-19 08:18:48,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 08:18:48,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 08:18:48,372 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-19 08:18:48,373 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-19 08:18:48,373 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_initialize [2022-11-19 08:18:48,373 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_initialize [2022-11-19 08:18:48,373 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_start_scan [2022-11-19 08:18:48,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_start_scan [2022-11-19 08:18:48,373 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-11-19 08:18:48,374 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-11-19 08:18:49,982 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:18:49,997 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:19:04,621 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:21:24,643 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:21:28,634 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:21:28,635 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 08:21:28,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:21:28 BoogieIcfgContainer [2022-11-19 08:21:28,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:21:28,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:21:28,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:21:28,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:21:28,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:18:35" (1/3) ... [2022-11-19 08:21:28,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be28b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:21:28, skipping insertion in model container [2022-11-19 08:21:28,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:46" (2/3) ... [2022-11-19 08:21:28,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be28b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:21:28, skipping insertion in model container [2022-11-19 08:21:28,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:21:28" (3/3) ... [2022-11-19 08:21:28,653 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2022-11-19 08:21:28,673 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:21:28,673 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-19 08:21:28,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:21:28,777 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;@1582b420, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:21:28,778 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-19 08:21:28,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 2655 states, 1633 states have (on average 1.320269442743417) internal successors, (2156), 1661 states have internal predecessors, (2156), 853 states have call successors, (853), 166 states have call predecessors, (853), 165 states have return successors, (849), 847 states have call predecessors, (849), 849 states have call successors, (849) [2022-11-19 08:21:28,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-19 08:21:28,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:21:28,804 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:21:28,808 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 08:21:28,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:21:28,816 INFO L85 PathProgramCache]: Analyzing trace with hash -459963593, now seen corresponding path program 1 times [2022-11-19 08:21:28,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:21:28,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040172577] [2022-11-19 08:21:28,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:28,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:21:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:21:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 08:21:31,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:21:31,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040172577] [2022-11-19 08:21:31,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040172577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:21:31,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:21:31,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:21:31,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405358828] [2022-11-19 08:21:31,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:21:31,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:21:31,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:21:31,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:21:31,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:21:31,885 INFO L87 Difference]: Start difference. First operand has 2655 states, 1633 states have (on average 1.320269442743417) internal successors, (2156), 1661 states have internal predecessors, (2156), 853 states have call successors, (853), 166 states have call predecessors, (853), 165 states have return successors, (849), 847 states have call predecessors, (849), 849 states have call successors, (849) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 08:21:36,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:21:39,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:21:41,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:21:45,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:21:49,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:21:50,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:21:57,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:22:00,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:22:02,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:22:06,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:22:09,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:22:14,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:22:14,033 INFO L93 Difference]: Finished difference Result 7524 states and 11131 transitions. [2022-11-19 08:22:14,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:22:14,041 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2022-11-19 08:22:14,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:22:14,112 INFO L225 Difference]: With dead ends: 7524 [2022-11-19 08:22:14,112 INFO L226 Difference]: Without dead ends: 4872 [2022-11-19 08:22:14,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:22:14,149 INFO L413 NwaCegarLoop]: 4268 mSDtfsCounter, 3217 mSDsluCounter, 12047 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 3 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3238 SdHoareTripleChecker+Valid, 16315 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:22:14,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3238 Valid, 16315 Invalid, 1209 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1196 Invalid, 10 Unknown, 0 Unchecked, 41.3s Time] [2022-11-19 08:22:14,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4872 states. [2022-11-19 08:22:14,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4872 to 4863. [2022-11-19 08:22:14,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4863 states, 2979 states have (on average 1.312185297079557) internal successors, (3909), 3031 states have internal predecessors, (3909), 1568 states have call successors, (1568), 316 states have call predecessors, (1568), 313 states have return successors, (1566), 1556 states have call predecessors, (1566), 1562 states have call successors, (1566) [2022-11-19 08:22:14,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4863 states to 4863 states and 7043 transitions. [2022-11-19 08:22:14,659 INFO L78 Accepts]: Start accepts. Automaton has 4863 states and 7043 transitions. Word has length 35 [2022-11-19 08:22:14,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:22:14,660 INFO L495 AbstractCegarLoop]: Abstraction has 4863 states and 7043 transitions. [2022-11-19 08:22:14,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 08:22:14,660 INFO L276 IsEmpty]: Start isEmpty. Operand 4863 states and 7043 transitions. [2022-11-19 08:22:14,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-19 08:22:14,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:22:14,666 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:22:14,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:22:14,666 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:22:14,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:22:14,667 INFO L85 PathProgramCache]: Analyzing trace with hash 611255923, now seen corresponding path program 1 times [2022-11-19 08:22:14,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:22:14,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331469888] [2022-11-19 08:22:14,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:22:14,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:22:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:22:17,115 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 08:22:17,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:22:17,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331469888] [2022-11-19 08:22:17,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331469888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:22:17,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:22:17,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:22:17,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391281260] [2022-11-19 08:22:17,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:22:17,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:22:17,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:22:17,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:22:17,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:22:17,119 INFO L87 Difference]: Start difference. First operand 4863 states and 7043 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 08:22:21,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:22:24,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:22:26,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:22:28,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:22:33,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:22:36,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:22:37,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:22:38,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:22:42,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:22:47,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:22:49,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:22:53,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:22:56,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:22:59,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:22:59,573 INFO L93 Difference]: Finished difference Result 5047 states and 7267 transitions. [2022-11-19 08:22:59,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:22:59,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 40 [2022-11-19 08:22:59,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:22:59,616 INFO L225 Difference]: With dead ends: 5047 [2022-11-19 08:22:59,617 INFO L226 Difference]: Without dead ends: 5045 [2022-11-19 08:22:59,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:22:59,623 INFO L413 NwaCegarLoop]: 4278 mSDtfsCounter, 3227 mSDsluCounter, 12048 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 2 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3244 SdHoareTripleChecker+Valid, 16326 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:22:59,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3244 Valid, 16326 Invalid, 1230 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1220 Invalid, 8 Unknown, 0 Unchecked, 41.8s Time] [2022-11-19 08:22:59,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5045 states. [2022-11-19 08:22:59,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5045 to 5029. [2022-11-19 08:22:59,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5029 states, 3077 states have (on average 1.3100422489437764) internal successors, (4031), 3134 states have internal predecessors, (4031), 1612 states have call successors, (1612), 339 states have call predecessors, (1612), 337 states have return successors, (1609), 1596 states have call predecessors, (1609), 1606 states have call successors, (1609) [2022-11-19 08:22:59,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5029 states to 5029 states and 7252 transitions. [2022-11-19 08:22:59,966 INFO L78 Accepts]: Start accepts. Automaton has 5029 states and 7252 transitions. Word has length 40 [2022-11-19 08:22:59,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:22:59,967 INFO L495 AbstractCegarLoop]: Abstraction has 5029 states and 7252 transitions. [2022-11-19 08:22:59,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 08:22:59,967 INFO L276 IsEmpty]: Start isEmpty. Operand 5029 states and 7252 transitions. [2022-11-19 08:22:59,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-19 08:22:59,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:22:59,978 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:22:59,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:22:59,978 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:22:59,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:22:59,980 INFO L85 PathProgramCache]: Analyzing trace with hash 219285805, now seen corresponding path program 1 times [2022-11-19 08:22:59,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:22:59,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377399147] [2022-11-19 08:22:59,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:22:59,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:23:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:23:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-19 08:23:02,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:23:02,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377399147] [2022-11-19 08:23:02,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377399147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:23:02,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:23:02,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:23:02,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878225545] [2022-11-19 08:23:02,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:23:02,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:23:02,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:23:02,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:23:02,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:23:02,019 INFO L87 Difference]: Start difference. First operand 5029 states and 7252 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 08:23:07,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:23:09,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:23:11,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:23:15,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:23:19,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:23:25,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:23:29,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:23:32,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:23:35,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:23:39,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:23:39,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:23:39,305 INFO L93 Difference]: Finished difference Result 5060 states and 7278 transitions. [2022-11-19 08:23:39,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:23:39,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 51 [2022-11-19 08:23:39,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:23:39,335 INFO L225 Difference]: With dead ends: 5060 [2022-11-19 08:23:39,335 INFO L226 Difference]: Without dead ends: 5058 [2022-11-19 08:23:39,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:23:39,340 INFO L413 NwaCegarLoop]: 4255 mSDtfsCounter, 3200 mSDsluCounter, 12002 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3217 SdHoareTripleChecker+Valid, 16257 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:23:39,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3217 Valid, 16257 Invalid, 1209 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1200 Invalid, 7 Unknown, 0 Unchecked, 36.9s Time] [2022-11-19 08:23:39,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5058 states. [2022-11-19 08:23:39,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5058 to 5051. [2022-11-19 08:23:39,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5051 states, 3090 states have (on average 1.309061488673139) internal successors, (4045), 3147 states have internal predecessors, (4045), 1615 states have call successors, (1615), 345 states have call predecessors, (1615), 343 states have return successors, (1612), 1599 states have call predecessors, (1612), 1609 states have call successors, (1612) [2022-11-19 08:23:39,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5051 states to 5051 states and 7272 transitions. [2022-11-19 08:23:39,660 INFO L78 Accepts]: Start accepts. Automaton has 5051 states and 7272 transitions. Word has length 51 [2022-11-19 08:23:39,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:23:39,661 INFO L495 AbstractCegarLoop]: Abstraction has 5051 states and 7272 transitions. [2022-11-19 08:23:39,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 08:23:39,662 INFO L276 IsEmpty]: Start isEmpty. Operand 5051 states and 7272 transitions. [2022-11-19 08:23:39,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-19 08:23:39,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:23:39,665 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:23:39,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:23:39,666 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:23:39,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:23:39,667 INFO L85 PathProgramCache]: Analyzing trace with hash -663502669, now seen corresponding path program 1 times [2022-11-19 08:23:39,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:23:39,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131913358] [2022-11-19 08:23:39,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:23:39,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:23:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:23:41,514 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-19 08:23:41,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:23:41,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131913358] [2022-11-19 08:23:41,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131913358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:23:41,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:23:41,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:23:41,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311046754] [2022-11-19 08:23:41,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:23:41,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:23:41,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:23:41,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:23:41,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:23:41,517 INFO L87 Difference]: Start difference. First operand 5051 states and 7272 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 08:23:45,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:23:47,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:23:49,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:23:54,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:23:57,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:23:58,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:23:59,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:24:04,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:24:07,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:24:09,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:24:13,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:24:16,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:24:19,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:24:19,826 INFO L93 Difference]: Finished difference Result 5070 states and 7287 transitions. [2022-11-19 08:24:19,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:24:19,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2022-11-19 08:24:19,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:24:19,858 INFO L225 Difference]: With dead ends: 5070 [2022-11-19 08:24:19,858 INFO L226 Difference]: Without dead ends: 5068 [2022-11-19 08:24:19,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:24:19,864 INFO L413 NwaCegarLoop]: 4278 mSDtfsCounter, 3227 mSDsluCounter, 12048 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3242 SdHoareTripleChecker+Valid, 16326 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:24:19,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3242 Valid, 16326 Invalid, 1230 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1222 Invalid, 6 Unknown, 0 Unchecked, 37.9s Time] [2022-11-19 08:24:19,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5068 states. [2022-11-19 08:24:20,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5068 to 5055. [2022-11-19 08:24:20,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5055 states, 3093 states have (on average 1.3087617200129325) internal successors, (4048), 3150 states have internal predecessors, (4048), 1615 states have call successors, (1615), 346 states have call predecessors, (1615), 344 states have return successors, (1612), 1599 states have call predecessors, (1612), 1609 states have call successors, (1612) [2022-11-19 08:24:20,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5055 states to 5055 states and 7275 transitions. [2022-11-19 08:24:20,166 INFO L78 Accepts]: Start accepts. Automaton has 5055 states and 7275 transitions. Word has length 50 [2022-11-19 08:24:20,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:24:20,167 INFO L495 AbstractCegarLoop]: Abstraction has 5055 states and 7275 transitions. [2022-11-19 08:24:20,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 08:24:20,167 INFO L276 IsEmpty]: Start isEmpty. Operand 5055 states and 7275 transitions. [2022-11-19 08:24:20,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-19 08:24:20,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:24:20,169 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:24:20,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:24:20,170 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 08:24:20,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:24:20,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1709245715, now seen corresponding path program 1 times [2022-11-19 08:24:20,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:24:20,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742455045] [2022-11-19 08:24:20,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:24:20,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:24:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:24:21,992 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-19 08:24:21,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:24:21,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742455045] [2022-11-19 08:24:21,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742455045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:24:21,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:24:21,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:24:21,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065924903] [2022-11-19 08:24:21,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:24:21,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:24:21,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:24:21,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:24:21,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:24:21,994 INFO L87 Difference]: Start difference. First operand 5055 states and 7275 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 08:24:25,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:24:27,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:24:30,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:24:35,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:24:39,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:24:48,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:24:51,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:24:54,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:24:58,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:24:58,503 INFO L93 Difference]: Finished difference Result 5074 states and 7290 transitions. [2022-11-19 08:24:58,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:24:58,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 61 [2022-11-19 08:24:58,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:24:58,532 INFO L225 Difference]: With dead ends: 5074 [2022-11-19 08:24:58,532 INFO L226 Difference]: Without dead ends: 5072 [2022-11-19 08:24:58,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:24:58,537 INFO L413 NwaCegarLoop]: 4278 mSDtfsCounter, 3223 mSDsluCounter, 12048 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3237 SdHoareTripleChecker+Valid, 16326 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:24:58,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3237 Valid, 16326 Invalid, 1230 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1222 Invalid, 6 Unknown, 0 Unchecked, 36.1s Time] [2022-11-19 08:24:58,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2022-11-19 08:24:58,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 5059. [2022-11-19 08:24:58,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5059 states, 3096 states have (on average 1.3084625322997416) internal successors, (4051), 3153 states have internal predecessors, (4051), 1615 states have call successors, (1615), 347 states have call predecessors, (1615), 345 states have return successors, (1612), 1599 states have call predecessors, (1612), 1609 states have call successors, (1612) [2022-11-19 08:24:58,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5059 states to 5059 states and 7278 transitions. [2022-11-19 08:24:58,939 INFO L78 Accepts]: Start accepts. Automaton has 5059 states and 7278 transitions. Word has length 61 [2022-11-19 08:24:58,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:24:58,939 INFO L495 AbstractCegarLoop]: Abstraction has 5059 states and 7278 transitions. [2022-11-19 08:24:58,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 08:24:58,940 INFO L276 IsEmpty]: Start isEmpty. Operand 5059 states and 7278 transitions. [2022-11-19 08:24:58,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-19 08:24:58,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:24:58,942 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:24:58,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:24:58,943 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 08:24:58,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:24:58,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1002549379, now seen corresponding path program 1 times [2022-11-19 08:24:58,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:24:58,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869595530] [2022-11-19 08:24:58,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:24:58,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:24:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:25:00,630 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-19 08:25:00,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:25:00,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869595530] [2022-11-19 08:25:00,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869595530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:25:00,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:25:00,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:25:00,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015756438] [2022-11-19 08:25:00,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:25:00,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:25:00,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:25:00,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:25:00,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:25:00,633 INFO L87 Difference]: Start difference. First operand 5059 states and 7278 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 08:25:04,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:25:07,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:25:10,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:25:12,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:25:16,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:25:20,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:25:21,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:25:26,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:25:30,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:25:32,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:25:36,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:25:39,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:25:42,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:25:42,502 INFO L93 Difference]: Finished difference Result 5467 states and 7818 transitions. [2022-11-19 08:25:42,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:25:42,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 66 [2022-11-19 08:25:42,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:25:42,539 INFO L225 Difference]: With dead ends: 5467 [2022-11-19 08:25:42,544 INFO L226 Difference]: Without dead ends: 5465 [2022-11-19 08:25:42,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:25:42,549 INFO L413 NwaCegarLoop]: 4279 mSDtfsCounter, 3241 mSDsluCounter, 12050 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3253 SdHoareTripleChecker+Valid, 16329 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:25:42,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3253 Valid, 16329 Invalid, 1210 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1202 Invalid, 6 Unknown, 0 Unchecked, 41.4s Time] [2022-11-19 08:25:42,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5465 states. [2022-11-19 08:25:42,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5465 to 5458. [2022-11-19 08:25:42,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5458 states, 3334 states have (on average 1.3050389922015597) internal successors, (4351), 3396 states have internal predecessors, (4351), 1733 states have call successors, (1733), 391 states have call predecessors, (1733), 388 states have return successors, (1728), 1715 states have call predecessors, (1728), 1725 states have call successors, (1728) [2022-11-19 08:25:42,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5458 states to 5458 states and 7812 transitions. [2022-11-19 08:25:42,872 INFO L78 Accepts]: Start accepts. Automaton has 5458 states and 7812 transitions. Word has length 66 [2022-11-19 08:25:42,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:25:42,872 INFO L495 AbstractCegarLoop]: Abstraction has 5458 states and 7812 transitions. [2022-11-19 08:25:42,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 08:25:42,873 INFO L276 IsEmpty]: Start isEmpty. Operand 5458 states and 7812 transitions. [2022-11-19 08:25:42,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-19 08:25:42,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:25:42,874 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:25:42,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:25:42,874 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 08:25:42,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:25:42,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1956832521, now seen corresponding path program 1 times [2022-11-19 08:25:42,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:25:42,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416177018] [2022-11-19 08:25:42,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:25:42,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:25:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:25:44,386 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-19 08:25:44,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:25:44,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416177018] [2022-11-19 08:25:44,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416177018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:25:44,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:25:44,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:25:44,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294108104] [2022-11-19 08:25:44,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:25:44,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:25:44,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:25:44,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:25:44,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:25:44,388 INFO L87 Difference]: Start difference. First operand 5458 states and 7812 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 08:25:47,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:25:49,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:25:51,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:25:56,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:26:00,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:26:06,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:26:10,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:26:15,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:26:17,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:26:21,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:26:21,007 INFO L93 Difference]: Finished difference Result 5481 states and 7831 transitions. [2022-11-19 08:26:21,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:26:21,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 65 [2022-11-19 08:26:21,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:26:21,033 INFO L225 Difference]: With dead ends: 5481 [2022-11-19 08:26:21,033 INFO L226 Difference]: Without dead ends: 5479 [2022-11-19 08:26:21,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:26:21,038 INFO L413 NwaCegarLoop]: 4278 mSDtfsCounter, 3227 mSDsluCounter, 12048 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3239 SdHoareTripleChecker+Valid, 16326 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:26:21,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3239 Valid, 16326 Invalid, 1230 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1223 Invalid, 5 Unknown, 0 Unchecked, 36.2s Time] [2022-11-19 08:26:21,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2022-11-19 08:26:21,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5466. [2022-11-19 08:26:21,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5466 states, 3340 states have (on average 1.3044910179640719) internal successors, (4357), 3402 states have internal predecessors, (4357), 1733 states have call successors, (1733), 393 states have call predecessors, (1733), 390 states have return successors, (1728), 1715 states have call predecessors, (1728), 1725 states have call successors, (1728) [2022-11-19 08:26:21,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5466 states to 5466 states and 7818 transitions. [2022-11-19 08:26:21,378 INFO L78 Accepts]: Start accepts. Automaton has 5466 states and 7818 transitions. Word has length 65 [2022-11-19 08:26:21,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:26:21,379 INFO L495 AbstractCegarLoop]: Abstraction has 5466 states and 7818 transitions. [2022-11-19 08:26:21,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 08:26:21,379 INFO L276 IsEmpty]: Start isEmpty. Operand 5466 states and 7818 transitions. [2022-11-19 08:26:21,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-19 08:26:21,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:26:21,382 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:26:21,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:26:21,382 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 08:26:21,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:26:21,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1776364237, now seen corresponding path program 1 times [2022-11-19 08:26:21,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:26:21,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177737138] [2022-11-19 08:26:21,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:26:21,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:26:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:26:22,898 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-19 08:26:22,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:26:22,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177737138] [2022-11-19 08:26:22,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177737138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:26:22,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:26:22,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:26:22,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234520298] [2022-11-19 08:26:22,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:26:22,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:26:22,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:26:22,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:26:22,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:26:22,901 INFO L87 Difference]: Start difference. First operand 5466 states and 7818 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 08:26:26,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:26:28,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:26:29,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:26:31,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:26:33,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:26:35,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:26:37,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:26:40,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:26:43,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:26:50,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:26:52,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:26:55,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:26:58,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:27:01,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:27:01,286 INFO L93 Difference]: Finished difference Result 8624 states and 12261 transitions. [2022-11-19 08:27:01,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:27:01,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2022-11-19 08:27:01,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:27:01,330 INFO L225 Difference]: With dead ends: 8624 [2022-11-19 08:27:01,331 INFO L226 Difference]: Without dead ends: 8622 [2022-11-19 08:27:01,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:27:01,338 INFO L413 NwaCegarLoop]: 4066 mSDtfsCounter, 3370 mSDsluCounter, 10324 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3379 SdHoareTripleChecker+Valid, 14390 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:27:01,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3379 Valid, 14390 Invalid, 1193 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1184 Invalid, 6 Unknown, 0 Unchecked, 37.9s Time] [2022-11-19 08:27:01,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8622 states. [2022-11-19 08:27:01,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8622 to 8615. [2022-11-19 08:27:01,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8615 states, 5241 states have (on average 1.2991795458881892) internal successors, (6809), 5372 states have internal predecessors, (6809), 2705 states have call successors, (2705), 690 states have call predecessors, (2705), 666 states have return successors, (2738), 2629 states have call predecessors, (2738), 2689 states have call successors, (2738) [2022-11-19 08:27:01,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8615 states to 8615 states and 12252 transitions. [2022-11-19 08:27:01,968 INFO L78 Accepts]: Start accepts. Automaton has 8615 states and 12252 transitions. Word has length 70 [2022-11-19 08:27:01,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:27:01,970 INFO L495 AbstractCegarLoop]: Abstraction has 8615 states and 12252 transitions. [2022-11-19 08:27:01,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 08:27:01,970 INFO L276 IsEmpty]: Start isEmpty. Operand 8615 states and 12252 transitions. [2022-11-19 08:27:01,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-19 08:27:01,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:01,972 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:27:01,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:27:01,973 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 08:27:01,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:01,973 INFO L85 PathProgramCache]: Analyzing trace with hash -404670409, now seen corresponding path program 1 times [2022-11-19 08:27:01,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:01,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413205001] [2022-11-19 08:27:01,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:01,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:03,306 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-19 08:27:03,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:03,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413205001] [2022-11-19 08:27:03,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413205001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:27:03,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:27:03,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:27:03,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768535712] [2022-11-19 08:27:03,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:27:03,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:27:03,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:03,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:27:03,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:27:03,308 INFO L87 Difference]: Start difference. First operand 8615 states and 12252 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 08:27:07,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:27:09,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:27:12,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:27:16,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:27:21,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:27:26,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:27:31,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:27:33,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:27:35,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:27:38,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:27:40,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:27:44,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:27:44,770 INFO L93 Difference]: Finished difference Result 8640 states and 12273 transitions. [2022-11-19 08:27:44,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:27:44,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 75 [2022-11-19 08:27:44,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:27:44,817 INFO L225 Difference]: With dead ends: 8640 [2022-11-19 08:27:44,817 INFO L226 Difference]: Without dead ends: 8638 [2022-11-19 08:27:44,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:27:44,825 INFO L413 NwaCegarLoop]: 4271 mSDtfsCounter, 3273 mSDsluCounter, 12034 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 2 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3282 SdHoareTripleChecker+Valid, 16305 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:27:44,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3282 Valid, 16305 Invalid, 1212 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1202 Invalid, 8 Unknown, 0 Unchecked, 40.9s Time] [2022-11-19 08:27:44,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8638 states. [2022-11-19 08:27:45,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8638 to 8631. [2022-11-19 08:27:45,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8631 states, 5253 states have (on average 1.2984960974681135) internal successors, (6821), 5384 states have internal predecessors, (6821), 2705 states have call successors, (2705), 694 states have call predecessors, (2705), 670 states have return successors, (2738), 2629 states have call predecessors, (2738), 2689 states have call successors, (2738) [2022-11-19 08:27:45,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8631 states to 8631 states and 12264 transitions. [2022-11-19 08:27:45,398 INFO L78 Accepts]: Start accepts. Automaton has 8631 states and 12264 transitions. Word has length 75 [2022-11-19 08:27:45,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:27:45,399 INFO L495 AbstractCegarLoop]: Abstraction has 8631 states and 12264 transitions. [2022-11-19 08:27:45,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 08:27:45,399 INFO L276 IsEmpty]: Start isEmpty. Operand 8631 states and 12264 transitions. [2022-11-19 08:27:45,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-19 08:27:45,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:45,408 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:27:45,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 08:27:45,408 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 08:27:45,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:45,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1444228979, now seen corresponding path program 1 times [2022-11-19 08:27:45,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:45,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188986527] [2022-11-19 08:27:45,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:45,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:46,842 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-19 08:27:46,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:46,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188986527] [2022-11-19 08:27:46,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188986527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:27:46,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:27:46,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:27:46,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123364262] [2022-11-19 08:27:46,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:27:46,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:27:46,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:46,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:27:46,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:27:46,845 INFO L87 Difference]: Start difference. First operand 8631 states and 12264 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 08:27:51,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:27:54,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:27:58,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:01,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:02,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:03,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:10,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:12,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:17,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:20,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:24,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:28:24,716 INFO L93 Difference]: Finished difference Result 8662 states and 12291 transitions. [2022-11-19 08:28:24,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:28:24,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 80 [2022-11-19 08:28:24,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:28:24,757 INFO L225 Difference]: With dead ends: 8662 [2022-11-19 08:28:24,758 INFO L226 Difference]: Without dead ends: 8660 [2022-11-19 08:28:24,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:28:24,765 INFO L413 NwaCegarLoop]: 4278 mSDtfsCounter, 3227 mSDsluCounter, 12048 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3236 SdHoareTripleChecker+Valid, 16326 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:28:24,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3236 Valid, 16326 Invalid, 1230 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1222 Invalid, 6 Unknown, 0 Unchecked, 37.3s Time] [2022-11-19 08:28:24,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8660 states. [2022-11-19 08:28:25,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8660 to 8647. [2022-11-19 08:28:25,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8647 states, 5265 states have (on average 1.297815764482431) internal successors, (6833), 5396 states have internal predecessors, (6833), 2705 states have call successors, (2705), 698 states have call predecessors, (2705), 674 states have return successors, (2738), 2629 states have call predecessors, (2738), 2689 states have call successors, (2738) [2022-11-19 08:28:25,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8647 states to 8647 states and 12276 transitions. [2022-11-19 08:28:25,472 INFO L78 Accepts]: Start accepts. Automaton has 8647 states and 12276 transitions. Word has length 80 [2022-11-19 08:28:25,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:28:25,473 INFO L495 AbstractCegarLoop]: Abstraction has 8647 states and 12276 transitions. [2022-11-19 08:28:25,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 08:28:25,474 INFO L276 IsEmpty]: Start isEmpty. Operand 8647 states and 12276 transitions. [2022-11-19 08:28:25,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-19 08:28:25,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:25,477 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:28:25,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 08:28:25,478 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 08:28:25,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:25,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1287424649, now seen corresponding path program 1 times [2022-11-19 08:28:25,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:28:25,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550044038] [2022-11-19 08:28:25,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:25,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:28:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-19 08:28:26,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:28:26,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550044038] [2022-11-19 08:28:26,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550044038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:28:26,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:28:26,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:28:26,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407689861] [2022-11-19 08:28:26,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:28:26,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:28:26,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:28:26,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:28:26,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:28:26,879 INFO L87 Difference]: Start difference. First operand 8647 states and 12276 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 08:28:30,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:28:32,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:28:37,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:40,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:42,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:48,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:50,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:55,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:58,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:01,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:29:01,365 INFO L93 Difference]: Finished difference Result 8683 states and 12308 transitions. [2022-11-19 08:29:01,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:29:01,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 85 [2022-11-19 08:29:01,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:29:01,399 INFO L225 Difference]: With dead ends: 8683 [2022-11-19 08:29:01,399 INFO L226 Difference]: Without dead ends: 8681 [2022-11-19 08:29:01,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:29:01,405 INFO L413 NwaCegarLoop]: 4278 mSDtfsCounter, 3223 mSDsluCounter, 12048 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3232 SdHoareTripleChecker+Valid, 16326 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:29:01,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3232 Valid, 16326 Invalid, 1227 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1219 Invalid, 6 Unknown, 0 Unchecked, 33.9s Time] [2022-11-19 08:29:01,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8681 states. [2022-11-19 08:29:01,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8681 to 8663. [2022-11-19 08:29:01,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8663 states, 5277 states have (on average 1.2971385256774683) internal successors, (6845), 5408 states have internal predecessors, (6845), 2705 states have call successors, (2705), 702 states have call predecessors, (2705), 678 states have return successors, (2738), 2629 states have call predecessors, (2738), 2689 states have call successors, (2738) [2022-11-19 08:29:02,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8663 states to 8663 states and 12288 transitions. [2022-11-19 08:29:02,009 INFO L78 Accepts]: Start accepts. Automaton has 8663 states and 12288 transitions. Word has length 85 [2022-11-19 08:29:02,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:29:02,009 INFO L495 AbstractCegarLoop]: Abstraction has 8663 states and 12288 transitions. [2022-11-19 08:29:02,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 08:29:02,010 INFO L276 IsEmpty]: Start isEmpty. Operand 8663 states and 12288 transitions. [2022-11-19 08:29:02,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-19 08:29:02,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:02,012 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:29:02,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 08:29:02,013 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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 08:29:02,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:02,013 INFO L85 PathProgramCache]: Analyzing trace with hash 631056266, now seen corresponding path program 1 times [2022-11-19 08:29:02,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:29:02,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449465095] [2022-11-19 08:29:02,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:02,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:29:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:03,336 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-19 08:29:03,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:29:03,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449465095] [2022-11-19 08:29:03,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449465095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:29:03,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:29:03,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:29:03,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167194831] [2022-11-19 08:29:03,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:29:03,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:29:03,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:29:03,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:29:03,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:29:03,338 INFO L87 Difference]: Start difference. First operand 8663 states and 12288 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-19 08:29:06,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:29:08,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:29:12,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:15,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:19,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:21,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:23,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:26,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:28,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:29:28,721 INFO L93 Difference]: Finished difference Result 18498 states and 26473 transitions. [2022-11-19 08:29:28,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:29:28,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 106 [2022-11-19 08:29:28,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:29:28,754 INFO L225 Difference]: With dead ends: 18498 [2022-11-19 08:29:28,754 INFO L226 Difference]: Without dead ends: 9851 [2022-11-19 08:29:28,801 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 08:29:28,802 INFO L413 NwaCegarLoop]: 3824 mSDtfsCounter, 339 mSDsluCounter, 3563 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 7387 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:29:28,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 7387 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 609 Invalid, 7 Unknown, 0 Unchecked, 24.8s Time] [2022-11-19 08:29:28,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9851 states. [2022-11-19 08:29:29,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9851 to 8907. [2022-11-19 08:29:29,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8907 states, 5441 states have (on average 1.2999448630766404) internal successors, (7073), 5576 states have internal predecessors, (7073), 2785 states have call successors, (2785), 702 states have call predecessors, (2785), 678 states have return successors, (2820), 2708 states have call predecessors, (2820), 2769 states have call successors, (2820) [2022-11-19 08:29:29,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8907 states to 8907 states and 12678 transitions. [2022-11-19 08:29:29,515 INFO L78 Accepts]: Start accepts. Automaton has 8907 states and 12678 transitions. Word has length 106 [2022-11-19 08:29:29,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:29:29,518 INFO L495 AbstractCegarLoop]: Abstraction has 8907 states and 12678 transitions. [2022-11-19 08:29:29,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-19 08:29:29,518 INFO L276 IsEmpty]: Start isEmpty. Operand 8907 states and 12678 transitions. [2022-11-19 08:29:29,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-19 08:29:29,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:29,520 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:29:29,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 08:29:29,521 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:29:29,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:29,521 INFO L85 PathProgramCache]: Analyzing trace with hash -587109965, now seen corresponding path program 1 times [2022-11-19 08:29:29,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:29:29,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102996234] [2022-11-19 08:29:29,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:29,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:29:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:31,250 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-19 08:29:31,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:29:31,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102996234] [2022-11-19 08:29:31,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102996234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:29:31,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:29:31,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:29:31,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472895553] [2022-11-19 08:29:31,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:29:31,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:29:31,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:29:31,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:29:31,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:29:31,252 INFO L87 Difference]: Start difference. First operand 8907 states and 12678 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:29:34,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:29:36,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:29:38,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:29:40,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:29:42,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:29:44,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:47,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:51,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:53,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:58,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:29:59,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:30:03,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:05,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:10,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:13,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:17,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:30:17,153 INFO L93 Difference]: Finished difference Result 8932 states and 12699 transitions. [2022-11-19 08:30:17,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:30:17,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 90 [2022-11-19 08:30:17,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:30:17,183 INFO L225 Difference]: With dead ends: 8932 [2022-11-19 08:30:17,183 INFO L226 Difference]: Without dead ends: 8930 [2022-11-19 08:30:17,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:30:17,189 INFO L413 NwaCegarLoop]: 4282 mSDtfsCounter, 3273 mSDsluCounter, 12056 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 2 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3279 SdHoareTripleChecker+Valid, 16338 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:30:17,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3279 Valid, 16338 Invalid, 1221 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1209 Invalid, 10 Unknown, 0 Unchecked, 45.2s Time] [2022-11-19 08:30:17,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8930 states. [2022-11-19 08:30:17,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8930 to 8923. [2022-11-19 08:30:17,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8923 states, 5453 states have (on average 1.2992847973592518) internal successors, (7085), 5588 states have internal predecessors, (7085), 2785 states have call successors, (2785), 706 states have call predecessors, (2785), 682 states have return successors, (2820), 2708 states have call predecessors, (2820), 2769 states have call successors, (2820) [2022-11-19 08:30:17,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8923 states to 8923 states and 12690 transitions. [2022-11-19 08:30:17,962 INFO L78 Accepts]: Start accepts. Automaton has 8923 states and 12690 transitions. Word has length 90 [2022-11-19 08:30:17,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:30:17,965 INFO L495 AbstractCegarLoop]: Abstraction has 8923 states and 12690 transitions. [2022-11-19 08:30:17,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:30:17,965 INFO L276 IsEmpty]: Start isEmpty. Operand 8923 states and 12690 transitions. [2022-11-19 08:30:17,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-19 08:30:17,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:30:17,968 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:30:17,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 08:30:17,969 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 08:30:17,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:30:17,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1300480493, now seen corresponding path program 1 times [2022-11-19 08:30:17,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:30:17,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516518213] [2022-11-19 08:30:17,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:30:17,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:30:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:30:19,652 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-11-19 08:30:19,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:30:19,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516518213] [2022-11-19 08:30:19,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516518213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:30:19,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:30:19,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:30:19,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999367111] [2022-11-19 08:30:19,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:30:19,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:30:19,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:30:19,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:30:19,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:30:19,654 INFO L87 Difference]: Start difference. First operand 8923 states and 12690 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 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 08:30:23,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:30:26,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:30:30,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:33,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:41,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:44,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:47,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:51,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:30:51,913 INFO L93 Difference]: Finished difference Result 8959 states and 12722 transitions. [2022-11-19 08:30:51,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:30:51,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 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 101 [2022-11-19 08:30:51,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:30:51,946 INFO L225 Difference]: With dead ends: 8959 [2022-11-19 08:30:51,946 INFO L226 Difference]: Without dead ends: 8957 [2022-11-19 08:30:51,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:30:51,951 INFO L413 NwaCegarLoop]: 4273 mSDtfsCounter, 3150 mSDsluCounter, 12038 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3159 SdHoareTripleChecker+Valid, 16311 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:30:51,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3159 Valid, 16311 Invalid, 1233 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1224 Invalid, 7 Unknown, 0 Unchecked, 31.5s Time] [2022-11-19 08:30:51,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8957 states. [2022-11-19 08:30:52,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8957 to 8939. [2022-11-19 08:30:52,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8939 states, 5465 states have (on average 1.2986276303751143) internal successors, (7097), 5600 states have internal predecessors, (7097), 2785 states have call successors, (2785), 710 states have call predecessors, (2785), 686 states have return successors, (2820), 2708 states have call predecessors, (2820), 2769 states have call successors, (2820) [2022-11-19 08:30:52,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8939 states to 8939 states and 12702 transitions. [2022-11-19 08:30:52,668 INFO L78 Accepts]: Start accepts. Automaton has 8939 states and 12702 transitions. Word has length 101 [2022-11-19 08:30:52,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:30:52,668 INFO L495 AbstractCegarLoop]: Abstraction has 8939 states and 12702 transitions. [2022-11-19 08:30:52,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 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 08:30:52,669 INFO L276 IsEmpty]: Start isEmpty. Operand 8939 states and 12702 transitions. [2022-11-19 08:30:52,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-19 08:30:52,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:30:52,673 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:30:52,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 08:30:52,673 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 08:30:52,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:30:52,674 INFO L85 PathProgramCache]: Analyzing trace with hash -653556749, now seen corresponding path program 1 times [2022-11-19 08:30:52,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:30:52,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428096257] [2022-11-19 08:30:52,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:30:52,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:30:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:30:54,478 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-11-19 08:30:54,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:30:54,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428096257] [2022-11-19 08:30:54,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428096257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:30:54,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:30:54,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:30:54,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24820741] [2022-11-19 08:30:54,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:30:54,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:30:54,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:30:54,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:30:54,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:30:54,481 INFO L87 Difference]: Start difference. First operand 8939 states and 12702 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 08:30:57,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:30:59,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:31:00,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:31:02,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:31:04,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:31:08,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:13,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:21,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:31:23,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:31:26,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:30,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:34,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:37,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:39,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:41,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:43,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:43,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:43,617 INFO L93 Difference]: Finished difference Result 8964 states and 12723 transitions. [2022-11-19 08:31:43,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:31:43,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 100 [2022-11-19 08:31:43,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:43,651 INFO L225 Difference]: With dead ends: 8964 [2022-11-19 08:31:43,651 INFO L226 Difference]: Without dead ends: 8960 [2022-11-19 08:31:43,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:31:43,658 INFO L413 NwaCegarLoop]: 4282 mSDtfsCounter, 3273 mSDsluCounter, 12056 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 2 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3277 SdHoareTripleChecker+Valid, 16338 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:43,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3277 Valid, 16338 Invalid, 1222 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1212 Invalid, 8 Unknown, 0 Unchecked, 48.4s Time] [2022-11-19 08:31:43,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8960 states. [2022-11-19 08:31:44,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8960 to 8953. [2022-11-19 08:31:44,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8953 states, 5476 states have (on average 1.297845142439737) internal successors, (7107), 5610 states have internal predecessors, (7107), 2785 states have call successors, (2785), 714 states have call predecessors, (2785), 689 states have return successors, (2820), 2708 states have call predecessors, (2820), 2769 states have call successors, (2820) [2022-11-19 08:31:44,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8953 states to 8953 states and 12712 transitions. [2022-11-19 08:31:44,340 INFO L78 Accepts]: Start accepts. Automaton has 8953 states and 12712 transitions. Word has length 100 [2022-11-19 08:31:44,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:44,341 INFO L495 AbstractCegarLoop]: Abstraction has 8953 states and 12712 transitions. [2022-11-19 08:31:44,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 08:31:44,341 INFO L276 IsEmpty]: Start isEmpty. Operand 8953 states and 12712 transitions. [2022-11-19 08:31:44,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-19 08:31:44,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:44,344 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:31:44,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-19 08:31:44,345 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:31:44,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:44,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1694048143, now seen corresponding path program 1 times [2022-11-19 08:31:44,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:44,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005817968] [2022-11-19 08:31:44,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:44,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:49,069 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-19 08:31:49,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:49,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005817968] [2022-11-19 08:31:49,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005817968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:49,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:49,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 08:31:49,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338018545] [2022-11-19 08:31:49,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:49,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:31:49,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:49,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:31:49,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:31:49,071 INFO L87 Difference]: Start difference. First operand 8953 states and 12712 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 08:31:57,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:31:59,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:32:02,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:32:06,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:32:12,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []