./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a17c24f91a3bb3d64b949ed6598dfddc35ec4ff57290faa768ce9df2bba8e700 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 04:00:43,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:00:43,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:00:43,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:00:43,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:00:43,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:00:43,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:00:43,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:00:43,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:00:43,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:00:43,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:00:43,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:00:43,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:00:43,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:00:43,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:00:43,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:00:43,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:00:43,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:00:43,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:00:43,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:00:43,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:00:43,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:00:43,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:00:43,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:00:43,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:00:43,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:00:43,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:00:43,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:00:43,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:00:43,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:00:43,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:00:43,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:00:43,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:00:43,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:00:43,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:00:43,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:00:43,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:00:43,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:00:43,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:00:43,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:00:43,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:00:43,532 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 04:00:43,571 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:00:43,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:00:43,572 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:00:43,572 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:00:43,573 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:00:43,573 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:00:43,573 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:00:43,574 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:00:43,574 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:00:43,574 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:00:43,574 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:00:43,574 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:00:43,575 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:00:43,575 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:00:43,575 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:00:43,575 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:00:43,575 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:00:43,576 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:00:43,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:00:43,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:00:43,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:00:43,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:00:43,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:00:43,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:00:43,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:00:43,579 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:00:43,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:00:43,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:00:43,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:00:43,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:00:43,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:00:43,581 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:00:43,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:00:43,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:00:43,581 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:00:43,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:00:43,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:00:43,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:00:43,583 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_9e79338b-340d-48b4-886c-84b9a42c8d29/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a17c24f91a3bb3d64b949ed6598dfddc35ec4ff57290faa768ce9df2bba8e700 [2022-11-03 04:00:43,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:00:43,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:00:43,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:00:43,929 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:00:43,930 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:00:43,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i [2022-11-03 04:00:43,995 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/bin/utaipan-7li7fVZpFI/data/d46bc7923/e87fa48714b14916b89a0e6c4e3bd576/FLAG6ef805c90 [2022-11-03 04:00:45,010 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:00:45,011 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i [2022-11-03 04:00:45,085 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/bin/utaipan-7li7fVZpFI/data/d46bc7923/e87fa48714b14916b89a0e6c4e3bd576/FLAG6ef805c90 [2022-11-03 04:00:45,342 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/bin/utaipan-7li7fVZpFI/data/d46bc7923/e87fa48714b14916b89a0e6c4e3bd576 [2022-11-03 04:00:45,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:00:45,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:00:45,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:00:45,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:00:45,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:00:45,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:00:45" (1/1) ... [2022-11-03 04:00:45,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b003cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:45, skipping insertion in model container [2022-11-03 04:00:45,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:00:45" (1/1) ... [2022-11-03 04:00:45,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:00:45,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:00:49,263 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396127,396140] [2022-11-03 04:00:49,267 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396296,396309] [2022-11-03 04:00:49,267 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396463,396476] [2022-11-03 04:00:49,268 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396631,396644] [2022-11-03 04:00:49,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:00:49,361 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:00:49,829 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396127,396140] [2022-11-03 04:00:49,830 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396296,396309] [2022-11-03 04:00:49,831 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396463,396476] [2022-11-03 04:00:49,831 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396631,396644] [2022-11-03 04:00:49,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:00:50,153 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:00:50,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:50 WrapperNode [2022-11-03 04:00:50,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:00:50,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:00:50,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:00:50,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:00:50,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:50" (1/1) ... [2022-11-03 04:00:50,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:50" (1/1) ... [2022-11-03 04:00:50,638 INFO L138 Inliner]: procedures = 537, calls = 2748, calls flagged for inlining = 264, calls inlined = 238, statements flattened = 6333 [2022-11-03 04:00:50,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:00:50,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:00:50,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:00:50,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:00:50,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:50" (1/1) ... [2022-11-03 04:00:50,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:50" (1/1) ... [2022-11-03 04:00:50,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:50" (1/1) ... [2022-11-03 04:00:50,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:50" (1/1) ... [2022-11-03 04:00:51,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:50" (1/1) ... [2022-11-03 04:00:51,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:50" (1/1) ... [2022-11-03 04:00:51,136 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:50" (1/1) ... [2022-11-03 04:00:51,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:50" (1/1) ... [2022-11-03 04:00:51,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:00:51,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:00:51,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:00:51,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:00:51,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:50" (1/1) ... [2022-11-03 04:00:51,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:00:51,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:00:51,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:00:51,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e79338b-340d-48b4-886c-84b9a42c8d29/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:00:51,297 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-03 04:00:51,297 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-03 04:00:51,297 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_get_eeprom_len [2022-11-03 04:00:51,298 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_get_eeprom_len [2022-11-03 04:00:51,298 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 04:00:51,298 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 04:00:51,298 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_nway_reset [2022-11-03 04:00:51,298 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_nway_reset [2022-11-03 04:00:51,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 04:00:51,299 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 04:00:51,299 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 04:00:51,299 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 04:00:51,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_87 [2022-11-03 04:00:51,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_87 [2022-11-03 04:00:51,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 04:00:51,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 04:00:51,300 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2022-11-03 04:00:51,300 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2022-11-03 04:00:51,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 04:00:51,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 04:00:51,301 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-03 04:00:51,301 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-03 04:00:51,301 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 04:00:51,301 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 04:00:51,302 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-03 04:00:51,302 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-03 04:00:51,302 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-11-03 04:00:51,302 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-11-03 04:00:51,302 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_free_irq [2022-11-03 04:00:51,303 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_free_irq [2022-11-03 04:00:51,303 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-03 04:00:51,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-03 04:00:51,303 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 04:00:51,303 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 04:00:51,303 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_close [2022-11-03 04:00:51,304 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_close [2022-11-03 04:00:51,304 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_get_speed_and_duplex [2022-11-03 04:00:51,304 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_get_speed_and_duplex [2022-11-03 04:00:51,304 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_force_ps [2022-11-03 04:00:51,304 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_force_ps [2022-11-03 04:00:51,305 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 04:00:51,305 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 04:00:51,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 04:00:51,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 04:00:51,306 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 04:00:51,306 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 04:00:51,306 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-03 04:00:51,306 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-03 04:00:51,306 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 04:00:51,307 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 04:00:51,307 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 04:00:51,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 04:00:51,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 04:00:51,307 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 04:00:51,308 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 04:00:51,308 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2022-11-03 04:00:51,308 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2022-11-03 04:00:51,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2022-11-03 04:00:51,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2022-11-03 04:00:51,309 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_write_phy_reg [2022-11-03 04:00:51,309 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_write_phy_reg [2022-11-03 04:00:51,309 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-03 04:00:51,309 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-03 04:00:51,309 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_vlan_mode [2022-11-03 04:00:51,309 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_vlan_mode [2022-11-03 04:00:51,310 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 04:00:51,310 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 04:00:51,310 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_up [2022-11-03 04:00:51,310 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_up [2022-11-03 04:00:51,310 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 04:00:51,311 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 04:00:51,311 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 04:00:51,311 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 04:00:51,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 04:00:51,311 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_tx_timeout [2022-11-03 04:00:51,311 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_tx_timeout [2022-11-03 04:00:51,312 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_irq_enable [2022-11-03 04:00:51,312 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_irq_enable [2022-11-03 04:00:51,312 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 04:00:51,312 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 04:00:51,312 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_poll_controller [2022-11-03 04:00:51,313 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_poll_controller [2022-11-03 04:00:51,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 04:00:51,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 04:00:51,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 04:00:51,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 04:00:51,314 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_irq_disable [2022-11-03 04:00:51,314 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_irq_disable [2022-11-03 04:00:51,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 04:00:51,314 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 04:00:51,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_stats_lock_of_atl2_adapter [2022-11-03 04:00:51,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_stats_lock_of_atl2_adapter [2022-11-03 04:00:51,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 04:00:51,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 04:00:51,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 04:00:51,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 04:00:51,315 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2022-11-03 04:00:51,316 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2022-11-03 04:00:51,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 04:00:51,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 04:00:51,316 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 04:00:51,316 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 04:00:51,317 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_shutdown [2022-11-03 04:00:51,317 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_shutdown [2022-11-03 04:00:51,317 INFO L130 BoogieDeclarations]: Found specification of procedure __atl2_vlan_mode [2022-11-03 04:00:51,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __atl2_vlan_mode [2022-11-03 04:00:51,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 04:00:51,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 04:00:51,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 04:00:51,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 04:00:51,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 04:00:51,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 04:00:51,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 04:00:51,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-03 04:00:51,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-03 04:00:51,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:00:51,388 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-03 04:00:51,389 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-03 04:00:51,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 04:00:51,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 04:00:51,389 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 04:00:51,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 04:00:51,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 04:00:51,389 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 04:00:51,389 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_set_multi [2022-11-03 04:00:51,389 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_set_multi [2022-11-03 04:00:51,389 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_phy_init [2022-11-03 04:00:51,390 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_phy_init [2022-11-03 04:00:51,390 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 04:00:51,390 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 04:00:51,390 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_configure [2022-11-03 04:00:51,390 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_configure [2022-11-03 04:00:51,390 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_reset_hw [2022-11-03 04:00:51,390 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_reset_hw [2022-11-03 04:00:51,390 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-03 04:00:51,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-03 04:00:51,390 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 04:00:51,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 04:00:51,391 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_open [2022-11-03 04:00:51,391 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_open [2022-11-03 04:00:51,391 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 04:00:51,391 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 04:00:51,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 04:00:51,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 04:00:51,391 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_validate_option [2022-11-03 04:00:51,391 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_validate_option [2022-11-03 04:00:51,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_stats_lock_of_atl2_adapter [2022-11-03 04:00:51,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_stats_lock_of_atl2_adapter [2022-11-03 04:00:51,392 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 04:00:51,392 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 04:00:51,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:00:51,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:00:51,392 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_intr [2022-11-03 04:00:51,392 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_intr [2022-11-03 04:00:51,392 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 04:00:51,392 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 04:00:51,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 04:00:51,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 04:00:51,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 04:00:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 04:00:51,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 04:00:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 04:00:51,393 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 04:00:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 04:00:51,393 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-03 04:00:51,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 04:00:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 04:00:51,393 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_remove [2022-11-03 04:00:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_remove [2022-11-03 04:00:51,393 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_read_eeprom [2022-11-03 04:00:51,394 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_read_eeprom [2022-11-03 04:00:51,394 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-03 04:00:51,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-03 04:00:51,394 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 04:00:51,394 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 04:00:51,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 04:00:51,394 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 04:00:51,394 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_request_irq [2022-11-03 04:00:51,394 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_request_irq [2022-11-03 04:00:51,394 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 04:00:51,394 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 04:00:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_read_phy_reg [2022-11-03 04:00:51,395 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_read_phy_reg [2022-11-03 04:00:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies [2022-11-03 04:00:51,395 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies [2022-11-03 04:00:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 04:00:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 04:00:51,395 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 04:00:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-03 04:00:51,395 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-03 04:00:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 04:00:51,396 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 04:00:51,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 04:00:51,396 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-11-03 04:00:51,396 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-11-03 04:00:51,396 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_suspend [2022-11-03 04:00:51,396 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_suspend [2022-11-03 04:00:51,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 04:00:51,396 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_reinit_locked [2022-11-03 04:00:51,396 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_reinit_locked [2022-11-03 04:00:51,396 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 04:00:51,396 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 04:00:51,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 04:00:51,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 04:00:51,399 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 04:00:51,399 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 04:00:51,399 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_resume [2022-11-03 04:00:51,399 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_resume [2022-11-03 04:00:51,399 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 04:00:51,399 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 04:00:51,400 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-03 04:00:51,400 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-03 04:00:51,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_77 [2022-11-03 04:00:51,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_77 [2022-11-03 04:00:51,400 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 04:00:51,400 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 04:00:51,400 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 04:00:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 04:00:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 04:00:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 04:00:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 04:00:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_get_regs_len [2022-11-03 04:00:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_get_regs_len [2022-11-03 04:00:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_check_eeprom_exist [2022-11-03 04:00:51,402 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_check_eeprom_exist [2022-11-03 04:00:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 04:00:51,402 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 04:00:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_restore_vlan [2022-11-03 04:00:51,402 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_restore_vlan [2022-11-03 04:00:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-03 04:00:51,403 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-03 04:00:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_78 [2022-11-03 04:00:51,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_78 [2022-11-03 04:00:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure init_ring_ptrs [2022-11-03 04:00:51,403 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ring_ptrs [2022-11-03 04:00:51,404 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-03 04:00:51,404 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-03 04:00:51,404 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-03 04:00:51,404 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-03 04:00:51,404 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_free_ring_resources [2022-11-03 04:00:51,404 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_free_ring_resources [2022-11-03 04:00:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 04:00:51,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 04:00:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_down [2022-11-03 04:00:51,405 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_down [2022-11-03 04:00:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-03 04:00:51,405 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-03 04:00:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-03 04:00:51,406 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-03 04:00:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-03 04:00:51,406 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-03 04:00:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 04:00:51,407 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 04:00:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_init_hw [2022-11-03 04:00:51,407 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_init_hw [2022-11-03 04:00:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:00:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 04:00:51,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 04:00:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-03 04:00:52,383 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:00:52,387 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:00:52,503 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 04:01:04,797 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 04:01:07,408 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:01:09,324 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:01:09,324 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-03 04:01:09,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:01:09 BoogieIcfgContainer [2022-11-03 04:01:09,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:01:09,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:01:09,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:01:09,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:01:09,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:00:45" (1/3) ... [2022-11-03 04:01:09,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494ff313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:01:09, skipping insertion in model container [2022-11-03 04:01:09,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:50" (2/3) ... [2022-11-03 04:01:09,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494ff313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:01:09, skipping insertion in model container [2022-11-03 04:01:09,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:01:09" (3/3) ... [2022-11-03 04:01:09,341 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i [2022-11-03 04:01:09,361 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:01:09,361 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 04:01:09,473 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:01:09,481 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;@c9e075a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:01:09,482 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 04:01:09,494 INFO L276 IsEmpty]: Start isEmpty. Operand has 1758 states, 1012 states have (on average 1.2598814229249011) internal successors, (1275), 1034 states have internal predecessors, (1275), 624 states have call successors, (624), 120 states have call predecessors, (624), 119 states have return successors, (619), 617 states have call predecessors, (619), 619 states have call successors, (619) [2022-11-03 04:01:09,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-03 04:01:09,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:09,524 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:09,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:01:09,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:09,532 INFO L85 PathProgramCache]: Analyzing trace with hash -839595547, now seen corresponding path program 1 times [2022-11-03 04:01:09,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:09,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516562217] [2022-11-03 04:01:09,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:09,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-03 04:01:10,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:10,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516562217] [2022-11-03 04:01:10,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516562217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:10,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:10,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:01:10,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371883290] [2022-11-03 04:01:10,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:10,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:01:10,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:10,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:01:10,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:01:10,505 INFO L87 Difference]: Start difference. First operand has 1758 states, 1012 states have (on average 1.2598814229249011) internal successors, (1275), 1034 states have internal predecessors, (1275), 624 states have call successors, (624), 120 states have call predecessors, (624), 119 states have return successors, (619), 617 states have call predecessors, (619), 619 states have call successors, (619) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 04:01:17,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:17,887 INFO L93 Difference]: Finished difference Result 5158 states and 7485 transitions. [2022-11-03 04:01:17,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:01:17,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 147 [2022-11-03 04:01:17,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:17,955 INFO L225 Difference]: With dead ends: 5158 [2022-11-03 04:01:17,955 INFO L226 Difference]: Without dead ends: 3417 [2022-11-03 04:01:17,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:01:17,979 INFO L413 NwaCegarLoop]: 2789 mSDtfsCounter, 2408 mSDsluCounter, 2477 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2408 SdHoareTripleChecker+Valid, 4964 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:17,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2408 Valid, 4964 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-03 04:01:18,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3417 states. [2022-11-03 04:01:18,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3417 to 3413. [2022-11-03 04:01:18,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3413 states, 1978 states have (on average 1.2542972699696664) internal successors, (2481), 2020 states have internal predecessors, (2481), 1197 states have call successors, (1197), 236 states have call predecessors, (1197), 235 states have return successors, (1194), 1190 states have call predecessors, (1194), 1194 states have call successors, (1194) [2022-11-03 04:01:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3413 states to 3413 states and 4872 transitions. [2022-11-03 04:01:18,334 INFO L78 Accepts]: Start accepts. Automaton has 3413 states and 4872 transitions. Word has length 147 [2022-11-03 04:01:18,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:18,340 INFO L495 AbstractCegarLoop]: Abstraction has 3413 states and 4872 transitions. [2022-11-03 04:01:18,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 04:01:18,340 INFO L276 IsEmpty]: Start isEmpty. Operand 3413 states and 4872 transitions. [2022-11-03 04:01:18,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 04:01:18,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:18,356 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:18,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:01:18,357 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:01:18,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:18,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1168634516, now seen corresponding path program 1 times [2022-11-03 04:01:18,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:18,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617493593] [2022-11-03 04:01:18,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:18,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:18,852 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-03 04:01:18,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:18,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617493593] [2022-11-03 04:01:18,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617493593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:18,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:18,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:01:18,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806271798] [2022-11-03 04:01:18,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:18,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:01:18,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:18,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:01:18,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:01:18,857 INFO L87 Difference]: Start difference. First operand 3413 states and 4872 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 04:01:22,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:27,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:27,243 INFO L93 Difference]: Finished difference Result 9699 states and 13836 transitions. [2022-11-03 04:01:27,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:01:27,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 152 [2022-11-03 04:01:27,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:27,296 INFO L225 Difference]: With dead ends: 9699 [2022-11-03 04:01:27,296 INFO L226 Difference]: Without dead ends: 6313 [2022-11-03 04:01:27,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:01:27,314 INFO L413 NwaCegarLoop]: 2773 mSDtfsCounter, 2168 mSDsluCounter, 2411 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2168 SdHoareTripleChecker+Valid, 4891 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:27,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2168 Valid, 4891 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 617 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2022-11-03 04:01:27,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6313 states. [2022-11-03 04:01:27,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6313 to 6279. [2022-11-03 04:01:27,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6279 states, 3641 states have (on average 1.2551496841527052) internal successors, (4570), 3729 states have internal predecessors, (4570), 2188 states have call successors, (2188), 458 states have call predecessors, (2188), 447 states have return successors, (2199), 2153 states have call predecessors, (2199), 2185 states have call successors, (2199) [2022-11-03 04:01:27,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6279 states to 6279 states and 8957 transitions. [2022-11-03 04:01:27,695 INFO L78 Accepts]: Start accepts. Automaton has 6279 states and 8957 transitions. Word has length 152 [2022-11-03 04:01:27,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:27,698 INFO L495 AbstractCegarLoop]: Abstraction has 6279 states and 8957 transitions. [2022-11-03 04:01:27,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 04:01:27,705 INFO L276 IsEmpty]: Start isEmpty. Operand 6279 states and 8957 transitions. [2022-11-03 04:01:27,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-03 04:01:27,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:27,710 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:27,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:01:27,710 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:01:27,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:27,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1734928910, now seen corresponding path program 1 times [2022-11-03 04:01:27,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:27,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689509795] [2022-11-03 04:01:27,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:27,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:28,107 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-03 04:01:28,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:28,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689509795] [2022-11-03 04:01:28,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689509795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:28,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:28,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:01:28,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010567417] [2022-11-03 04:01:28,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:28,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:01:28,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:28,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:01:28,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:01:28,115 INFO L87 Difference]: Start difference. First operand 6279 states and 8957 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 04:01:34,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:36,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:36,200 INFO L93 Difference]: Finished difference Result 18369 states and 26237 transitions. [2022-11-03 04:01:36,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:01:36,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 163 [2022-11-03 04:01:36,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:36,285 INFO L225 Difference]: With dead ends: 18369 [2022-11-03 04:01:36,285 INFO L226 Difference]: Without dead ends: 12117 [2022-11-03 04:01:36,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:01:36,326 INFO L413 NwaCegarLoop]: 2858 mSDtfsCounter, 2200 mSDsluCounter, 2454 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2200 SdHoareTripleChecker+Valid, 5014 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:36,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2200 Valid, 5014 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 631 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-03 04:01:36,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12117 states. [2022-11-03 04:01:37,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12117 to 12079. [2022-11-03 04:01:37,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12079 states, 7001 states have (on average 1.2538208827310384) internal successors, (8778), 7181 states have internal predecessors, (8778), 4208 states have call successors, (4208), 896 states have call predecessors, (4208), 867 states have return successors, (4273), 4119 states have call predecessors, (4273), 4205 states have call successors, (4273) [2022-11-03 04:01:37,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12079 states to 12079 states and 17259 transitions. [2022-11-03 04:01:37,170 INFO L78 Accepts]: Start accepts. Automaton has 12079 states and 17259 transitions. Word has length 163 [2022-11-03 04:01:37,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:37,172 INFO L495 AbstractCegarLoop]: Abstraction has 12079 states and 17259 transitions. [2022-11-03 04:01:37,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 04:01:37,174 INFO L276 IsEmpty]: Start isEmpty. Operand 12079 states and 17259 transitions. [2022-11-03 04:01:37,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-03 04:01:37,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:37,178 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:37,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:01:37,179 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:01:37,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:37,180 INFO L85 PathProgramCache]: Analyzing trace with hash 310236256, now seen corresponding path program 1 times [2022-11-03 04:01:37,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:37,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150506002] [2022-11-03 04:01:37,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:37,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:37,489 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-03 04:01:37,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:37,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150506002] [2022-11-03 04:01:37,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150506002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:37,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:37,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:01:37,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207360573] [2022-11-03 04:01:37,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:37,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:01:37,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:37,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:01:37,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:01:37,492 INFO L87 Difference]: Start difference. First operand 12079 states and 17259 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 04:01:44,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:44,044 INFO L93 Difference]: Finished difference Result 32431 states and 45969 transitions. [2022-11-03 04:01:44,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:01:44,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 166 [2022-11-03 04:01:44,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:44,171 INFO L225 Difference]: With dead ends: 32431 [2022-11-03 04:01:44,171 INFO L226 Difference]: Without dead ends: 20379 [2022-11-03 04:01:44,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:01:44,229 INFO L413 NwaCegarLoop]: 2657 mSDtfsCounter, 1847 mSDsluCounter, 2393 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1847 SdHoareTripleChecker+Valid, 4780 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:44,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1847 Valid, 4780 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-03 04:01:44,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20379 states. [2022-11-03 04:01:45,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20379 to 20347. [2022-11-03 04:01:45,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20347 states, 11645 states have (on average 1.2319450407900387) internal successors, (14346), 11965 states have internal predecessors, (14346), 7096 states have call successors, (7096), 1662 states have call predecessors, (7096), 1603 states have return successors, (7225), 6925 states have call predecessors, (7225), 7093 states have call successors, (7225) [2022-11-03 04:01:45,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20347 states to 20347 states and 28667 transitions. [2022-11-03 04:01:45,658 INFO L78 Accepts]: Start accepts. Automaton has 20347 states and 28667 transitions. Word has length 166 [2022-11-03 04:01:45,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:45,659 INFO L495 AbstractCegarLoop]: Abstraction has 20347 states and 28667 transitions. [2022-11-03 04:01:45,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 04:01:45,659 INFO L276 IsEmpty]: Start isEmpty. Operand 20347 states and 28667 transitions. [2022-11-03 04:01:45,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-03 04:01:45,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:45,664 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:45,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 04:01:45,665 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:01:45,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:45,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1791672640, now seen corresponding path program 1 times [2022-11-03 04:01:45,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:45,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652235955] [2022-11-03 04:01:45,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:45,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:46,408 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2022-11-03 04:01:46,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:46,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652235955] [2022-11-03 04:01:46,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652235955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:46,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:46,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:01:46,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493494154] [2022-11-03 04:01:46,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:46,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:01:46,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:46,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:01:46,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:01:46,410 INFO L87 Difference]: Start difference. First operand 20347 states and 28667 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 04:01:53,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:57,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:00,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:00,997 INFO L93 Difference]: Finished difference Result 39797 states and 56217 transitions. [2022-11-03 04:02:01,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:02:01,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 185 [2022-11-03 04:02:01,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:01,195 INFO L225 Difference]: With dead ends: 39797 [2022-11-03 04:02:01,196 INFO L226 Difference]: Without dead ends: 39795 [2022-11-03 04:02:01,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:02:01,214 INFO L413 NwaCegarLoop]: 3234 mSDtfsCounter, 2208 mSDsluCounter, 9718 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2222 SdHoareTripleChecker+Valid, 11831 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:01,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2222 Valid, 11831 Invalid, 1558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1553 Invalid, 2 Unknown, 0 Unchecked, 13.4s Time] [2022-11-03 04:02:01,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39795 states. [2022-11-03 04:02:03,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39795 to 39769. [2022-11-03 04:02:03,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39769 states, 22724 states have (on average 1.2309452561168808) internal successors, (27972), 23366 states have internal predecessors, (27972), 13877 states have call successors, (13877), 3283 states have call predecessors, (13877), 3165 states have return successors, (14343), 13521 states have call predecessors, (14343), 13871 states have call successors, (14343) [2022-11-03 04:02:03,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39769 states to 39769 states and 56192 transitions. [2022-11-03 04:02:03,920 INFO L78 Accepts]: Start accepts. Automaton has 39769 states and 56192 transitions. Word has length 185 [2022-11-03 04:02:03,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:03,921 INFO L495 AbstractCegarLoop]: Abstraction has 39769 states and 56192 transitions. [2022-11-03 04:02:03,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 04:02:03,922 INFO L276 IsEmpty]: Start isEmpty. Operand 39769 states and 56192 transitions. [2022-11-03 04:02:03,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-03 04:02:03,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:03,927 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:03,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 04:02:03,927 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:02:03,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:03,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1803646208, now seen corresponding path program 1 times [2022-11-03 04:02:03,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:02:03,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954445473] [2022-11-03 04:02:03,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:03,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:02:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:04,853 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2022-11-03 04:02:04,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:02:04,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954445473] [2022-11-03 04:02:04,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954445473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:02:04,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:02:04,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:02:04,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963685634] [2022-11-03 04:02:04,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:02:04,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:02:04,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:02:04,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:02:04,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:02:04,856 INFO L87 Difference]: Start difference. First operand 39769 states and 56192 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 04:02:06,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:13,241 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 [] [2022-11-03 04:02:19,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:19,198 INFO L93 Difference]: Finished difference Result 39779 states and 56201 transitions. [2022-11-03 04:02:19,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:02:19,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 190 [2022-11-03 04:02:19,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:19,406 INFO L225 Difference]: With dead ends: 39779 [2022-11-03 04:02:19,406 INFO L226 Difference]: Without dead ends: 39777 [2022-11-03 04:02:19,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:02:19,427 INFO L413 NwaCegarLoop]: 2185 mSDtfsCounter, 2435 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2448 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:19,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2448 Valid, 6533 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 948 Invalid, 1 Unknown, 0 Unchecked, 13.0s Time] [2022-11-03 04:02:19,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39777 states. [2022-11-03 04:02:22,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39777 to 39777. [2022-11-03 04:02:22,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39777 states, 22730 states have (on average 1.2308842938847337) internal successors, (27978), 23372 states have internal predecessors, (27978), 13877 states have call successors, (13877), 3285 states have call predecessors, (13877), 3167 states have return successors, (14343), 13521 states have call predecessors, (14343), 13871 states have call successors, (14343) [2022-11-03 04:02:22,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39777 states to 39777 states and 56198 transitions. [2022-11-03 04:02:22,242 INFO L78 Accepts]: Start accepts. Automaton has 39777 states and 56198 transitions. Word has length 190 [2022-11-03 04:02:22,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:22,243 INFO L495 AbstractCegarLoop]: Abstraction has 39777 states and 56198 transitions. [2022-11-03 04:02:22,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 04:02:22,243 INFO L276 IsEmpty]: Start isEmpty. Operand 39777 states and 56198 transitions. [2022-11-03 04:02:22,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-03 04:02:22,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:22,248 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:22,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 04:02:22,248 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:02:22,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:22,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1667169414, now seen corresponding path program 1 times [2022-11-03 04:02:22,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:02:22,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805099199] [2022-11-03 04:02:22,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:22,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:02:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:22,630 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2022-11-03 04:02:22,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:02:22,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805099199] [2022-11-03 04:02:22,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805099199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:02:22,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:02:22,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:02:22,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329914595] [2022-11-03 04:02:22,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:02:22,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:02:22,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:02:22,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:02:22,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:02:22,636 INFO L87 Difference]: Start difference. First operand 39777 states and 56198 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-03 04:02:23,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:28,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:32,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:32,244 INFO L93 Difference]: Finished difference Result 69777 states and 98405 transitions. [2022-11-03 04:02:32,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:02:32,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 200 [2022-11-03 04:02:32,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:32,407 INFO L225 Difference]: With dead ends: 69777 [2022-11-03 04:02:32,407 INFO L226 Difference]: Without dead ends: 30027 [2022-11-03 04:02:32,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:02:32,669 INFO L413 NwaCegarLoop]: 3374 mSDtfsCounter, 1562 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 5523 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:32,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1562 Valid, 5523 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 835 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2022-11-03 04:02:32,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30027 states. [2022-11-03 04:02:34,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30027 to 29951. [2022-11-03 04:02:34,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29951 states, 17381 states have (on average 1.2370979805534779) internal successors, (21502), 17871 states have internal predecessors, (21502), 10071 states have call successors, (10071), 2568 states have call predecessors, (10071), 2496 states have return successors, (10321), 9796 states have call predecessors, (10321), 10065 states have call successors, (10321) [2022-11-03 04:02:34,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29951 states to 29951 states and 41894 transitions. [2022-11-03 04:02:34,622 INFO L78 Accepts]: Start accepts. Automaton has 29951 states and 41894 transitions. Word has length 200 [2022-11-03 04:02:34,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:34,623 INFO L495 AbstractCegarLoop]: Abstraction has 29951 states and 41894 transitions. [2022-11-03 04:02:34,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-03 04:02:34,623 INFO L276 IsEmpty]: Start isEmpty. Operand 29951 states and 41894 transitions. [2022-11-03 04:02:34,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-03 04:02:34,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:34,627 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 6, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:34,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 04:02:34,628 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:02:34,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:34,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1892670089, now seen corresponding path program 1 times [2022-11-03 04:02:34,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:02:34,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382527942] [2022-11-03 04:02:34,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:34,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:02:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:35,335 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2022-11-03 04:02:35,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:02:35,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382527942] [2022-11-03 04:02:35,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382527942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:02:35,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:02:35,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:02:35,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65817474] [2022-11-03 04:02:35,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:02:35,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:02:35,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:02:35,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:02:35,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:02:35,338 INFO L87 Difference]: Start difference. First operand 29951 states and 41894 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 04:02:37,835 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 [] [2022-11-03 04:02:42,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:47,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:49,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:49,410 INFO L93 Difference]: Finished difference Result 29961 states and 41903 transitions. [2022-11-03 04:02:49,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:02:49,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 204 [2022-11-03 04:02:49,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:49,546 INFO L225 Difference]: With dead ends: 29961 [2022-11-03 04:02:49,546 INFO L226 Difference]: Without dead ends: 29959 [2022-11-03 04:02:49,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:02:49,564 INFO L413 NwaCegarLoop]: 2185 mSDtfsCounter, 2431 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2443 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:49,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2443 Valid, 6533 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 947 Invalid, 2 Unknown, 0 Unchecked, 13.0s Time] [2022-11-03 04:02:49,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29959 states. [2022-11-03 04:02:51,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29959 to 29959. [2022-11-03 04:02:51,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29959 states, 17387 states have (on average 1.2370161614999713) internal successors, (21508), 17877 states have internal predecessors, (21508), 10071 states have call successors, (10071), 2570 states have call predecessors, (10071), 2498 states have return successors, (10321), 9796 states have call predecessors, (10321), 10065 states have call successors, (10321) [2022-11-03 04:02:51,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29959 states to 29959 states and 41900 transitions. [2022-11-03 04:02:51,422 INFO L78 Accepts]: Start accepts. Automaton has 29959 states and 41900 transitions. Word has length 204 [2022-11-03 04:02:51,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:51,423 INFO L495 AbstractCegarLoop]: Abstraction has 29959 states and 41900 transitions. [2022-11-03 04:02:51,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 04:02:51,423 INFO L276 IsEmpty]: Start isEmpty. Operand 29959 states and 41900 transitions. [2022-11-03 04:02:51,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-03 04:02:51,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:51,444 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 6, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:51,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 04:02:51,445 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:02:51,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:51,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1769472425, now seen corresponding path program 1 times [2022-11-03 04:02:51,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:02:51,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265745040] [2022-11-03 04:02:51,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:51,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:02:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:51,900 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2022-11-03 04:02:51,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:02:51,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265745040] [2022-11-03 04:02:51,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265745040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:02:51,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:02:51,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:02:51,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091891726] [2022-11-03 04:02:51,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:02:51,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:02:51,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:02:51,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:02:51,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:02:51,903 INFO L87 Difference]: Start difference. First operand 29959 states and 41900 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 04:02:58,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:03:06,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:06,025 INFO L93 Difference]: Finished difference Result 35082 states and 48772 transitions. [2022-11-03 04:03:06,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:03:06,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 209 [2022-11-03 04:03:06,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:06,142 INFO L225 Difference]: With dead ends: 35082 [2022-11-03 04:03:06,142 INFO L226 Difference]: Without dead ends: 35080 [2022-11-03 04:03:06,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:03:06,155 INFO L413 NwaCegarLoop]: 2682 mSDtfsCounter, 1575 mSDsluCounter, 8433 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 10171 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:06,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1586 Valid, 10171 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1286 Invalid, 1 Unknown, 0 Unchecked, 12.6s Time] [2022-11-03 04:03:06,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35080 states. [2022-11-03 04:03:07,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35080 to 35073. [2022-11-03 04:03:08,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35073 states, 20287 states have (on average 1.2302952629762902) internal successors, (24959), 20871 states have internal predecessors, (24959), 11764 states have call successors, (11764), 3106 states have call predecessors, (11764), 3019 states have return successors, (12043), 11434 states have call predecessors, (12043), 11755 states have call successors, (12043) [2022-11-03 04:03:08,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35073 states to 35073 states and 48766 transitions. [2022-11-03 04:03:08,129 INFO L78 Accepts]: Start accepts. Automaton has 35073 states and 48766 transitions. Word has length 209 [2022-11-03 04:03:08,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:08,130 INFO L495 AbstractCegarLoop]: Abstraction has 35073 states and 48766 transitions. [2022-11-03 04:03:08,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 04:03:08,131 INFO L276 IsEmpty]: Start isEmpty. Operand 35073 states and 48766 transitions. [2022-11-03 04:03:08,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-03 04:03:08,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:08,134 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:03:08,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 04:03:08,134 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:03:08,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:08,135 INFO L85 PathProgramCache]: Analyzing trace with hash 558120512, now seen corresponding path program 1 times [2022-11-03 04:03:08,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:03:08,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707789067] [2022-11-03 04:03:08,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:08,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:03:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:08,625 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 787 trivial. 0 not checked. [2022-11-03 04:03:08,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:03:08,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707789067] [2022-11-03 04:03:08,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707789067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:03:08,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:03:08,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:03:08,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748707696] [2022-11-03 04:03:08,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:03:08,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:03:08,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:03:08,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:03:08,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:03:08,627 INFO L87 Difference]: Start difference. First operand 35073 states and 48766 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 04:03:12,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:03:17,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:03:21,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:03:23,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:23,378 INFO L93 Difference]: Finished difference Result 35087 states and 48779 transitions. [2022-11-03 04:03:23,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:03:23,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 205 [2022-11-03 04:03:23,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:23,477 INFO L225 Difference]: With dead ends: 35087 [2022-11-03 04:03:23,477 INFO L226 Difference]: Without dead ends: 35085 [2022-11-03 04:03:23,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:03:23,489 INFO L413 NwaCegarLoop]: 2185 mSDtfsCounter, 2435 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2445 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:23,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2445 Valid, 6533 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 948 Invalid, 1 Unknown, 0 Unchecked, 13.2s Time] [2022-11-03 04:03:23,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35085 states. [2022-11-03 04:03:25,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35085 to 35085. [2022-11-03 04:03:25,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35085 states, 20296 states have (on average 1.2301931415057155) internal successors, (24968), 20880 states have internal predecessors, (24968), 11764 states have call successors, (11764), 3109 states have call predecessors, (11764), 3022 states have return successors, (12043), 11434 states have call predecessors, (12043), 11755 states have call successors, (12043) [2022-11-03 04:03:25,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35085 states to 35085 states and 48775 transitions. [2022-11-03 04:03:25,344 INFO L78 Accepts]: Start accepts. Automaton has 35085 states and 48775 transitions. Word has length 205 [2022-11-03 04:03:25,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:25,344 INFO L495 AbstractCegarLoop]: Abstraction has 35085 states and 48775 transitions. [2022-11-03 04:03:25,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 04:03:25,345 INFO L276 IsEmpty]: Start isEmpty. Operand 35085 states and 48775 transitions. [2022-11-03 04:03:25,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-03 04:03:25,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:25,347 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:03:25,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 04:03:25,347 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:03:25,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:25,348 INFO L85 PathProgramCache]: Analyzing trace with hash 920290432, now seen corresponding path program 1 times [2022-11-03 04:03:25,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:03:25,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082414207] [2022-11-03 04:03:25,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:25,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:03:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:25,814 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2022-11-03 04:03:25,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:03:25,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082414207] [2022-11-03 04:03:25,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082414207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:03:25,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:03:25,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:03:25,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118018770] [2022-11-03 04:03:25,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:03:25,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:03:25,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:03:25,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:03:25,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:03:25,817 INFO L87 Difference]: Start difference. First operand 35085 states and 48775 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 04:03:33,601 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 [] [2022-11-03 04:03:38,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:38,217 INFO L93 Difference]: Finished difference Result 35099 states and 48788 transitions. [2022-11-03 04:03:38,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:03:38,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 210 [2022-11-03 04:03:38,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:38,320 INFO L225 Difference]: With dead ends: 35099 [2022-11-03 04:03:38,320 INFO L226 Difference]: Without dead ends: 35097 [2022-11-03 04:03:38,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:03:38,335 INFO L413 NwaCegarLoop]: 2185 mSDtfsCounter, 2435 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2444 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:38,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2444 Valid, 6533 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 948 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2022-11-03 04:03:38,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35097 states. [2022-11-03 04:03:40,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35097 to 35097. [2022-11-03 04:03:40,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35097 states, 20305 states have (on average 1.2300911105639005) internal successors, (24977), 20889 states have internal predecessors, (24977), 11764 states have call successors, (11764), 3112 states have call predecessors, (11764), 3025 states have return successors, (12043), 11434 states have call predecessors, (12043), 11755 states have call successors, (12043) [2022-11-03 04:03:40,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35097 states to 35097 states and 48784 transitions. [2022-11-03 04:03:40,284 INFO L78 Accepts]: Start accepts. Automaton has 35097 states and 48784 transitions. Word has length 210 [2022-11-03 04:03:40,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:40,285 INFO L495 AbstractCegarLoop]: Abstraction has 35097 states and 48784 transitions. [2022-11-03 04:03:40,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 04:03:40,285 INFO L276 IsEmpty]: Start isEmpty. Operand 35097 states and 48784 transitions. [2022-11-03 04:03:40,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-03 04:03:40,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:40,288 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:03:40,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 04:03:40,289 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:03:40,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:40,289 INFO L85 PathProgramCache]: Analyzing trace with hash 261307904, now seen corresponding path program 1 times [2022-11-03 04:03:40,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:03:40,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198459561] [2022-11-03 04:03:40,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:40,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:03:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2022-11-03 04:03:40,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:03:40,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198459561] [2022-11-03 04:03:40,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198459561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:03:40,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:03:40,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:03:40,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539111707] [2022-11-03 04:03:40,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:03:40,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:03:40,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:03:40,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:03:40,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:03:40,717 INFO L87 Difference]: Start difference. First operand 35097 states and 48784 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 04:03:47,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:03:49,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:03:55,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:55,305 INFO L93 Difference]: Finished difference Result 35110 states and 48793 transitions. [2022-11-03 04:03:55,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:03:55,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 215 [2022-11-03 04:03:55,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:55,421 INFO L225 Difference]: With dead ends: 35110 [2022-11-03 04:03:55,421 INFO L226 Difference]: Without dead ends: 35108 [2022-11-03 04:03:55,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:03:55,438 INFO L413 NwaCegarLoop]: 2682 mSDtfsCounter, 1579 mSDsluCounter, 8433 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 10171 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:55,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1587 Valid, 10171 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1286 Invalid, 1 Unknown, 0 Unchecked, 12.9s Time] [2022-11-03 04:03:55,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35108 states. [2022-11-03 04:03:57,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35108 to 35101. [2022-11-03 04:03:57,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35101 states, 20308 states have (on average 1.2300571203466615) internal successors, (24980), 20892 states have internal predecessors, (24980), 11764 states have call successors, (11764), 3113 states have call predecessors, (11764), 3026 states have return successors, (12043), 11434 states have call predecessors, (12043), 11755 states have call successors, (12043) [2022-11-03 04:03:57,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35101 states to 35101 states and 48787 transitions. [2022-11-03 04:03:57,672 INFO L78 Accepts]: Start accepts. Automaton has 35101 states and 48787 transitions. Word has length 215 [2022-11-03 04:03:57,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:57,673 INFO L495 AbstractCegarLoop]: Abstraction has 35101 states and 48787 transitions. [2022-11-03 04:03:57,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 04:03:57,673 INFO L276 IsEmpty]: Start isEmpty. Operand 35101 states and 48787 transitions. [2022-11-03 04:03:57,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-11-03 04:03:57,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:57,676 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 8, 7, 7, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:03:57,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 04:03:57,676 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:03:57,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:57,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1961856064, now seen corresponding path program 1 times [2022-11-03 04:03:57,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:03:57,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328035731] [2022-11-03 04:03:57,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:57,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:03:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2022-11-03 04:03:58,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:03:58,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328035731] [2022-11-03 04:03:58,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328035731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:03:58,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:03:58,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:03:58,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802306366] [2022-11-03 04:03:58,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:03:58,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:03:58,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:03:58,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:03:58,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:03:58,084 INFO L87 Difference]: Start difference. First operand 35101 states and 48787 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 04:04:02,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:04:05,454 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 [] [2022-11-03 04:04:10,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:10,339 INFO L93 Difference]: Finished difference Result 35115 states and 48800 transitions. [2022-11-03 04:04:10,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:04:10,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 220 [2022-11-03 04:04:10,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:10,443 INFO L225 Difference]: With dead ends: 35115 [2022-11-03 04:04:10,443 INFO L226 Difference]: Without dead ends: 35113 [2022-11-03 04:04:10,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:04:10,456 INFO L413 NwaCegarLoop]: 2185 mSDtfsCounter, 2435 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2442 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:10,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2442 Valid, 6533 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 948 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2022-11-03 04:04:10,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35113 states. [2022-11-03 04:04:12,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35113 to 35113. [2022-11-03 04:04:12,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35113 states, 20317 states have (on average 1.229955209922725) internal successors, (24989), 20901 states have internal predecessors, (24989), 11764 states have call successors, (11764), 3116 states have call predecessors, (11764), 3029 states have return successors, (12043), 11434 states have call predecessors, (12043), 11755 states have call successors, (12043) [2022-11-03 04:04:12,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35113 states to 35113 states and 48796 transitions. [2022-11-03 04:04:12,406 INFO L78 Accepts]: Start accepts. Automaton has 35113 states and 48796 transitions. Word has length 220 [2022-11-03 04:04:12,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:12,407 INFO L495 AbstractCegarLoop]: Abstraction has 35113 states and 48796 transitions. [2022-11-03 04:04:12,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 04:04:12,407 INFO L276 IsEmpty]: Start isEmpty. Operand 35113 states and 48796 transitions. [2022-11-03 04:04:12,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-03 04:04:12,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:12,410 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 9, 8, 8, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:04:12,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 04:04:12,410 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)] === [2022-11-03 04:04:12,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:12,411 INFO L85 PathProgramCache]: Analyzing trace with hash 217244681, now seen corresponding path program 1 times [2022-11-03 04:04:12,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:04:12,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086047757] [2022-11-03 04:04:12,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:12,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:04:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:12,838 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2022-11-03 04:04:12,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:04:12,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086047757] [2022-11-03 04:04:12,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086047757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:04:12,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:04:12,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:04:12,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871589973] [2022-11-03 04:04:12,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:04:12,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:04:12,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:04:12,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:04:12,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:04:12,840 INFO L87 Difference]: Start difference. First operand 35113 states and 48796 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 04:04:19,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:04:24,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:04:28,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:28,351 INFO L93 Difference]: Finished difference Result 35126 states and 48805 transitions. [2022-11-03 04:04:28,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:04:28,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 234 [2022-11-03 04:04:28,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:28,450 INFO L225 Difference]: With dead ends: 35126 [2022-11-03 04:04:28,450 INFO L226 Difference]: Without dead ends: 35124 [2022-11-03 04:04:28,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:04:28,460 INFO L413 NwaCegarLoop]: 2682 mSDtfsCounter, 1575 mSDsluCounter, 8433 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 10171 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:28,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1581 Valid, 10171 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1285 Invalid, 2 Unknown, 0 Unchecked, 13.4s Time] [2022-11-03 04:04:28,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35124 states. [2022-11-03 04:04:30,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35124 to 35117. [2022-11-03 04:04:30,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35117 states, 20320 states have (on average 1.2299212598425198) internal successors, (24992), 20904 states have internal predecessors, (24992), 11764 states have call successors, (11764), 3117 states have call predecessors, (11764), 3030 states have return successors, (12043), 11434 states have call predecessors, (12043), 11755 states have call successors, (12043) [2022-11-03 04:04:30,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35117 states to 35117 states and 48799 transitions. [2022-11-03 04:04:30,322 INFO L78 Accepts]: Start accepts. Automaton has 35117 states and 48799 transitions. Word has length 234 [2022-11-03 04:04:30,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:30,323 INFO L495 AbstractCegarLoop]: Abstraction has 35117 states and 48799 transitions. [2022-11-03 04:04:30,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 04:04:30,323 INFO L276 IsEmpty]: Start isEmpty. Operand 35117 states and 48799 transitions. [2022-11-03 04:04:30,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-03 04:04:30,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:30,327 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 10, 9, 9, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:04:30,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 04:04:30,327 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:04:30,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:30,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1325232983, now seen corresponding path program 1 times [2022-11-03 04:04:30,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:04:30,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511255774] [2022-11-03 04:04:30,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:30,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:04:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:30,748 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 933 trivial. 0 not checked. [2022-11-03 04:04:30,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:04:30,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511255774] [2022-11-03 04:04:30,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511255774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:04:30,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:04:30,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:04:30,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676255180] [2022-11-03 04:04:30,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:04:30,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:04:30,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:04:30,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:04:30,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:04:30,751 INFO L87 Difference]: Start difference. First operand 35117 states and 48799 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-03 04:04:36,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:04:40,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:04:45,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:45,649 INFO L93 Difference]: Finished difference Result 35130 states and 48808 transitions. [2022-11-03 04:04:45,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:04:45,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 239 [2022-11-03 04:04:45,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:45,786 INFO L225 Difference]: With dead ends: 35130 [2022-11-03 04:04:45,786 INFO L226 Difference]: Without dead ends: 35128 [2022-11-03 04:04:45,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:04:45,801 INFO L413 NwaCegarLoop]: 2682 mSDtfsCounter, 1575 mSDsluCounter, 8433 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 10171 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:45,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 10171 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1285 Invalid, 2 Unknown, 0 Unchecked, 12.9s Time] [2022-11-03 04:04:45,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35128 states. [2022-11-03 04:04:47,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35128 to 35121. [2022-11-03 04:04:47,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35121 states, 20323 states have (on average 1.2298873197854647) internal successors, (24995), 20907 states have internal predecessors, (24995), 11764 states have call successors, (11764), 3118 states have call predecessors, (11764), 3031 states have return successors, (12043), 11434 states have call predecessors, (12043), 11755 states have call successors, (12043) [2022-11-03 04:04:47,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35121 states to 35121 states and 48802 transitions. [2022-11-03 04:04:47,847 INFO L78 Accepts]: Start accepts. Automaton has 35121 states and 48802 transitions. Word has length 239 [2022-11-03 04:04:47,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:47,848 INFO L495 AbstractCegarLoop]: Abstraction has 35121 states and 48802 transitions. [2022-11-03 04:04:47,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-03 04:04:47,848 INFO L276 IsEmpty]: Start isEmpty. Operand 35121 states and 48802 transitions. [2022-11-03 04:04:47,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-03 04:04:47,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:47,852 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:04:47,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 04:04:47,852 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)] === [2022-11-03 04:04:47,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:47,853 INFO L85 PathProgramCache]: Analyzing trace with hash -2008279464, now seen corresponding path program 1 times [2022-11-03 04:04:47,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:04:47,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192030012] [2022-11-03 04:04:47,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:47,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:04:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:48,118 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-11-03 04:04:48,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:04:48,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192030012] [2022-11-03 04:04:48,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192030012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:04:48,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:04:48,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:04:48,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116231271] [2022-11-03 04:04:48,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:04:48,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:04:48,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:04:48,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:04:48,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:04:48,123 INFO L87 Difference]: Start difference. First operand 35121 states and 48802 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-03 04:04:59,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:59,017 INFO L93 Difference]: Finished difference Result 80998 states and 112536 transitions. [2022-11-03 04:04:59,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:04:59,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 230 [2022-11-03 04:04:59,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:59,223 INFO L225 Difference]: With dead ends: 80998 [2022-11-03 04:04:59,224 INFO L226 Difference]: Without dead ends: 45960 [2022-11-03 04:04:59,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:04:59,351 INFO L413 NwaCegarLoop]: 3502 mSDtfsCounter, 1564 mSDsluCounter, 2438 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 5644 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:59,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1564 Valid, 5644 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-11-03 04:04:59,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45960 states. [2022-11-03 04:05:02,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45960 to 45787. [2022-11-03 04:05:02,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45787 states, 26712 states have (on average 1.2336777478286913) internal successors, (32954), 27466 states have internal predecessors, (32954), 15046 states have call successors, (15046), 4125 states have call predecessors, (15046), 4026 states have return successors, (15345), 14624 states have call predecessors, (15345), 15037 states have call successors, (15345) [2022-11-03 04:05:02,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45787 states to 45787 states and 63345 transitions. [2022-11-03 04:05:02,439 INFO L78 Accepts]: Start accepts. Automaton has 45787 states and 63345 transitions. Word has length 230 [2022-11-03 04:05:02,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:02,440 INFO L495 AbstractCegarLoop]: Abstraction has 45787 states and 63345 transitions. [2022-11-03 04:05:02,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-03 04:05:02,440 INFO L276 IsEmpty]: Start isEmpty. Operand 45787 states and 63345 transitions. [2022-11-03 04:05:02,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-03 04:05:02,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:02,443 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 11, 10, 10, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:02,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 04:05:02,443 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:05:02,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:02,444 INFO L85 PathProgramCache]: Analyzing trace with hash 25181568, now seen corresponding path program 1 times [2022-11-03 04:05:02,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:05:02,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170102646] [2022-11-03 04:05:02,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:02,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:05:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:02,947 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2022-11-03 04:05:02,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:05:02,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170102646] [2022-11-03 04:05:02,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170102646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:02,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:02,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:05:02,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509622078] [2022-11-03 04:05:02,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:02,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:05:02,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:05:02,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:05:02,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:05:02,950 INFO L87 Difference]: Start difference. First operand 45787 states and 63345 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 04:05:10,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:05:17,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:17,725 INFO L93 Difference]: Finished difference Result 45800 states and 63354 transitions. [2022-11-03 04:05:17,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:05:17,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 235 [2022-11-03 04:05:17,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:17,877 INFO L225 Difference]: With dead ends: 45800 [2022-11-03 04:05:17,877 INFO L226 Difference]: Without dead ends: 45798 [2022-11-03 04:05:17,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:05:17,897 INFO L413 NwaCegarLoop]: 2682 mSDtfsCounter, 1579 mSDsluCounter, 8433 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 10171 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:17,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 10171 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1286 Invalid, 1 Unknown, 0 Unchecked, 12.3s Time] [2022-11-03 04:05:17,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45798 states. [2022-11-03 04:05:21,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45798 to 45791. [2022-11-03 04:05:21,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45791 states, 26715 states have (on average 1.2336515066442073) internal successors, (32957), 27469 states have internal predecessors, (32957), 15046 states have call successors, (15046), 4126 states have call predecessors, (15046), 4027 states have return successors, (15345), 14624 states have call predecessors, (15345), 15037 states have call successors, (15345) [2022-11-03 04:05:21,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45791 states to 45791 states and 63348 transitions. [2022-11-03 04:05:21,317 INFO L78 Accepts]: Start accepts. Automaton has 45791 states and 63348 transitions. Word has length 235 [2022-11-03 04:05:21,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:21,318 INFO L495 AbstractCegarLoop]: Abstraction has 45791 states and 63348 transitions. [2022-11-03 04:05:21,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 04:05:21,318 INFO L276 IsEmpty]: Start isEmpty. Operand 45791 states and 63348 transitions. [2022-11-03 04:05:21,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-03 04:05:21,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:21,321 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 12, 11, 11, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:21,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 04:05:21,321 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:05:21,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:21,322 INFO L85 PathProgramCache]: Analyzing trace with hash 968260183, now seen corresponding path program 1 times [2022-11-03 04:05:21,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:05:21,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758170637] [2022-11-03 04:05:21,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:21,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:05:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:21,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1031 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2022-11-03 04:05:21,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:05:21,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758170637] [2022-11-03 04:05:21,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758170637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:21,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:21,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:05:21,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616638798] [2022-11-03 04:05:21,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:21,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:05:21,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:05:21,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:05:21,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:05:21,756 INFO L87 Difference]: Start difference. First operand 45791 states and 63348 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 04:05:30,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:05:36,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:36,303 INFO L93 Difference]: Finished difference Result 45805 states and 63361 transitions. [2022-11-03 04:05:36,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:05:36,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 249 [2022-11-03 04:05:36,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:36,443 INFO L225 Difference]: With dead ends: 45805 [2022-11-03 04:05:36,443 INFO L226 Difference]: Without dead ends: 45803 [2022-11-03 04:05:36,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:05:36,458 INFO L413 NwaCegarLoop]: 2185 mSDtfsCounter, 2431 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2434 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:36,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2434 Valid, 6533 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 948 Invalid, 1 Unknown, 0 Unchecked, 12.1s Time] [2022-11-03 04:05:36,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45803 states.