./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0968ea9b-e22d-471b-9ca7-f95626cddeff/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0968ea9b-e22d-471b-9ca7-f95626cddeff/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_0968ea9b-e22d-471b-9ca7-f95626cddeff/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0968ea9b-e22d-471b-9ca7-f95626cddeff/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0968ea9b-e22d-471b-9ca7-f95626cddeff/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_0968ea9b-e22d-471b-9ca7-f95626cddeff/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 4ee317e42bc2e06685ca0df819e5fc98feaca323581d52409851fe6eefd66a2a --- 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 03:34:28,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:34:28,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:34:28,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:34:28,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:34:28,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:34:28,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:34:28,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:34:28,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:34:28,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:34:28,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:34:28,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:34:28,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:34:28,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:34:28,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:34:28,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:34:28,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:34:28,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:34:28,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:34:28,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:34:28,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:34:28,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:34:28,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:34:28,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:34:28,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:34:28,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:34:28,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:34:28,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:34:28,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:34:28,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:34:28,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:34:28,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:34:28,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:34:28,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:34:28,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:34:28,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:34:28,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:34:28,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:34:28,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:34:28,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:34:28,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:34:28,734 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0968ea9b-e22d-471b-9ca7-f95626cddeff/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:34:28,774 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:34:28,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:34:28,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:34:28,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:34:28,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:34:28,776 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:34:28,776 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:34:28,777 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:34:28,777 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:34:28,777 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:34:28,778 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:34:28,778 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:34:28,778 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:34:28,778 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:34:28,779 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:34:28,779 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:34:28,779 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:34:28,779 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:34:28,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:34:28,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:34:28,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:34:28,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:34:28,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:34:28,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:34:28,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:34:28,782 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:34:28,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:34:28,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:34:28,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:34:28,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:34:28,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:34:28,784 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:34:28,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:34:28,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:34:28,784 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:34:28,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:34:28,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:34:28,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:34:28,785 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_0968ea9b-e22d-471b-9ca7-f95626cddeff/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0968ea9b-e22d-471b-9ca7-f95626cddeff/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ee317e42bc2e06685ca0df819e5fc98feaca323581d52409851fe6eefd66a2a [2022-11-03 03:34:29,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:34:29,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:34:29,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:34:29,171 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:34:29,172 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:34:29,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0968ea9b-e22d-471b-9ca7-f95626cddeff/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2022-11-03 03:34:29,243 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0968ea9b-e22d-471b-9ca7-f95626cddeff/bin/utaipan-7li7fVZpFI/data/ab4716af6/100476b1e41945c5ab6c9529d04966e8/FLAGc66834497 [2022-11-03 03:34:30,255 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:34:30,256 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0968ea9b-e22d-471b-9ca7-f95626cddeff/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2022-11-03 03:34:30,337 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0968ea9b-e22d-471b-9ca7-f95626cddeff/bin/utaipan-7li7fVZpFI/data/ab4716af6/100476b1e41945c5ab6c9529d04966e8/FLAGc66834497 [2022-11-03 03:34:30,631 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0968ea9b-e22d-471b-9ca7-f95626cddeff/bin/utaipan-7li7fVZpFI/data/ab4716af6/100476b1e41945c5ab6c9529d04966e8 [2022-11-03 03:34:30,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:34:30,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:34:30,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:34:30,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:34:30,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:34:30,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:34:30" (1/1) ... [2022-11-03 03:34:30,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e3d07bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:30, skipping insertion in model container [2022-11-03 03:34:30,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:34:30" (1/1) ... [2022-11-03 03:34:30,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:34:30,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:34:33,716 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_0968ea9b-e22d-471b-9ca7-f95626cddeff/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323320,323333] [2022-11-03 03:34:33,721 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_0968ea9b-e22d-471b-9ca7-f95626cddeff/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323489,323502] [2022-11-03 03:34:33,722 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_0968ea9b-e22d-471b-9ca7-f95626cddeff/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323656,323669] [2022-11-03 03:34:33,722 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_0968ea9b-e22d-471b-9ca7-f95626cddeff/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323824,323837] [2022-11-03 03:34:33,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:34:33,805 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:34:34,255 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_0968ea9b-e22d-471b-9ca7-f95626cddeff/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323320,323333] [2022-11-03 03:34:34,255 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_0968ea9b-e22d-471b-9ca7-f95626cddeff/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323489,323502] [2022-11-03 03:34:34,256 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_0968ea9b-e22d-471b-9ca7-f95626cddeff/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323656,323669] [2022-11-03 03:34:34,256 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_0968ea9b-e22d-471b-9ca7-f95626cddeff/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323824,323837] [2022-11-03 03:34:34,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:34:34,429 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:34:34,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:34 WrapperNode [2022-11-03 03:34:34,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:34:34,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:34:34,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:34:34,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:34:34,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:34" (1/1) ... [2022-11-03 03:34:34,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:34" (1/1) ... [2022-11-03 03:34:34,765 INFO L138 Inliner]: procedures = 422, calls = 1985, calls flagged for inlining = 201, calls inlined = 184, statements flattened = 5029 [2022-11-03 03:34:34,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:34:34,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:34:34,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:34:34,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:34:34,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:34" (1/1) ... [2022-11-03 03:34:34,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:34" (1/1) ... [2022-11-03 03:34:34,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:34" (1/1) ... [2022-11-03 03:34:34,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:34" (1/1) ... [2022-11-03 03:34:34,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:34" (1/1) ... [2022-11-03 03:34:34,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:34" (1/1) ... [2022-11-03 03:34:35,026 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:34" (1/1) ... [2022-11-03 03:34:35,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:34" (1/1) ... [2022-11-03 03:34:35,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:34:35,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:34:35,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:34:35,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:34:35,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:34" (1/1) ... [2022-11-03 03:34:35,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:34:35,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0968ea9b-e22d-471b-9ca7-f95626cddeff/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:34:35,123 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0968ea9b-e22d-471b-9ca7-f95626cddeff/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:34:35,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0968ea9b-e22d-471b-9ca7-f95626cddeff/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:34:35,176 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 03:34:35,176 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 03:34:35,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:34:35,176 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:34:35,177 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-03 03:34:35,177 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-03 03:34:35,177 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_set_filter_mode [2022-11-03 03:34:35,177 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_set_filter_mode [2022-11-03 03:34:35,177 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 03:34:35,178 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 03:34:35,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:34:35,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:34:35,178 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_resume [2022-11-03 03:34:35,179 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_resume [2022-11-03 03:34:35,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 03:34:35,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 03:34:35,179 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-03 03:34:35,179 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-03 03:34:35,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_dmfe_board_info [2022-11-03 03:34:35,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_dmfe_board_info [2022-11-03 03:34:35,180 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 03:34:35,180 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 03:34:35,180 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-03 03:34:35,180 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-03 03:34:35,181 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-03 03:34:35,181 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-03 03:34:35,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_69 [2022-11-03 03:34:35,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_69 [2022-11-03 03:34:35,181 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-03 03:34:35,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-03 03:34:35,182 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 03:34:35,182 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 03:34:35,183 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_reuse_skb [2022-11-03 03:34:35,183 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_reuse_skb [2022-11-03 03:34:35,183 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2022-11-03 03:34:35,183 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2022-11-03 03:34:35,183 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 03:34:35,184 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 03:34:35,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 03:34:35,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 03:34:35,185 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 03:34:35,185 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 03:34:35,186 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-03 03:34:35,186 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-03 03:34:35,187 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 03:34:35,187 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 03:34:35,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 03:34:35,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 03:34:35,187 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write [2022-11-03 03:34:35,188 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write [2022-11-03 03:34:35,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:34:35,188 INFO L130 BoogieDeclarations]: Found specification of procedure poll_dmfe [2022-11-03 03:34:35,188 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_dmfe [2022-11-03 03:34:35,189 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 03:34:35,189 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 03:34:35,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:34:35,190 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 03:34:35,190 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 03:34:35,190 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2022-11-03 03:34:35,190 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2022-11-03 03:34:35,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:34:35,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 03:34:35,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 03:34:35,191 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_remove_one [2022-11-03 03:34:35,191 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_remove_one [2022-11-03 03:34:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write_1bit [2022-11-03 03:34:35,192 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write_1bit [2022-11-03 03:34:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:34:35,193 INFO L130 BoogieDeclarations]: Found specification of procedure dm9132_id_table [2022-11-03 03:34:35,193 INFO L138 BoogieDeclarations]: Found implementation of procedure dm9132_id_table [2022-11-03 03:34:35,193 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 03:34:35,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 03:34:35,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 03:34:35,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 03:34:35,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 03:34:35,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 03:34:35,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 03:34:35,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 03:34:35,195 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_interrupt [2022-11-03 03:34:35,195 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_interrupt [2022-11-03 03:34:35,195 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 03:34:35,195 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 03:34:35,196 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read_1bit [2022-11-03 03:34:35,197 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read_1bit [2022-11-03 03:34:35,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 03:34:35,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 03:34:35,198 INFO L130 BoogieDeclarations]: Found specification of procedure cal_CRC [2022-11-03 03:34:35,198 INFO L138 BoogieDeclarations]: Found implementation of procedure cal_CRC [2022-11-03 03:34:35,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:34:35,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 03:34:35,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 03:34:35,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 03:34:35,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 03:34:35,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:34:35,199 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_rx_buffer [2022-11-03 03:34:35,199 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_rx_buffer [2022-11-03 03:34:35,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 03:34:35,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 03:34:35,200 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 03:34:35,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 03:34:35,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:34:35,201 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-11-03 03:34:35,201 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-11-03 03:34:35,202 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:34:35,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:34:35,205 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2022-11-03 03:34:35,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2022-11-03 03:34:35,206 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_free_rxbuffer [2022-11-03 03:34:35,206 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_free_rxbuffer [2022-11-03 03:34:35,207 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-03 03:34:35,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-03 03:34:35,208 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 03:34:35,208 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 03:34:35,208 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 03:34:35,214 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 03:34:35,214 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 03:34:35,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 03:34:35,215 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_stop [2022-11-03 03:34:35,215 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_stop [2022-11-03 03:34:35,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:34:35,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:34:35,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:34:35,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:34:35,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:34:35,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:34:35,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 03:34:35,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 03:34:35,216 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 03:34:35,217 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 03:34:35,217 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_open [2022-11-03 03:34:35,217 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_open [2022-11-03 03:34:35,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 03:34:35,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 03:34:35,217 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 03:34:35,218 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 03:34:35,218 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read [2022-11-03 03:34:35,218 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read [2022-11-03 03:34:35,218 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 03:34:35,218 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 03:34:35,218 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-03 03:34:35,219 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-03 03:34:35,219 INFO L130 BoogieDeclarations]: Found specification of procedure send_filter_frame [2022-11-03 03:34:35,219 INFO L138 BoogieDeclarations]: Found implementation of procedure send_filter_frame [2022-11-03 03:34:35,219 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 03:34:35,219 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 03:34:35,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:34:35,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:34:35,220 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-03 03:34:35,220 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-03 03:34:35,220 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-11-03 03:34:35,220 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-11-03 03:34:35,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:34:35,221 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_init_dm910x [2022-11-03 03:34:35,221 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_init_dm910x [2022-11-03 03:34:35,221 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 03:34:35,221 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 03:34:35,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 03:34:35,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 03:34:35,222 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2022-11-03 03:34:35,222 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2022-11-03 03:34:35,222 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 03:34:35,222 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 03:34:35,222 INFO L130 BoogieDeclarations]: Found specification of procedure update_cr6 [2022-11-03 03:34:35,222 INFO L138 BoogieDeclarations]: Found implementation of procedure update_cr6 [2022-11-03 03:34:35,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:34:35,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:34:35,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:34:35,223 INFO L130 BoogieDeclarations]: Found specification of procedure srom_clk_write [2022-11-03 03:34:35,223 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_clk_write [2022-11-03 03:34:35,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_dmfe_cleanup_module_14_2 [2022-11-03 03:34:35,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_dmfe_cleanup_module_14_2 [2022-11-03 03:34:35,224 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2022-11-03 03:34:35,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2022-11-03 03:34:35,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 03:34:35,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 03:34:35,224 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-03 03:34:35,225 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-03 03:34:35,225 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-03 03:34:35,226 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-03 03:34:35,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:34:35,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 03:34:35,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 03:34:36,248 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:34:36,254 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:34:36,612 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:34:39,925 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 03:34:40,059 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:34:41,681 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:34:41,681 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:34:41,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:34:41 BoogieIcfgContainer [2022-11-03 03:34:41,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:34:41,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:34:41,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:34:41,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:34:41,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:34:30" (1/3) ... [2022-11-03 03:34:41,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e280301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:34:41, skipping insertion in model container [2022-11-03 03:34:41,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:34" (2/3) ... [2022-11-03 03:34:41,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e280301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:34:41, skipping insertion in model container [2022-11-03 03:34:41,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:34:41" (3/3) ... [2022-11-03 03:34:41,697 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2022-11-03 03:34:41,718 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:34:41,718 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 03:34:41,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:34:41,830 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;@5b947785, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:34:41,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 03:34:41,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 1182 states, 677 states have (on average 1.2983751846381093) internal successors, (879), 700 states have internal predecessors, (879), 420 states have call successors, (420), 83 states have call predecessors, (420), 82 states have return successors, (414), 405 states have call predecessors, (414), 414 states have call successors, (414) [2022-11-03 03:34:41,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-03 03:34:41,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:41,869 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:34:41,870 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 03:34:41,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:41,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1063298655, now seen corresponding path program 1 times [2022-11-03 03:34:41,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:41,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648482094] [2022-11-03 03:34:41,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:41,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:42,699 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-03 03:34:42,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:42,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648482094] [2022-11-03 03:34:42,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648482094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:42,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:34:42,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:34:42,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31699165] [2022-11-03 03:34:42,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:42,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:34:42,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:42,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:34:42,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:34:42,751 INFO L87 Difference]: Start difference. First operand has 1182 states, 677 states have (on average 1.2983751846381093) internal successors, (879), 700 states have internal predecessors, (879), 420 states have call successors, (420), 83 states have call predecessors, (420), 82 states have return successors, (414), 405 states have call predecessors, (414), 414 states have call successors, (414) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:34:46,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:46,208 INFO L93 Difference]: Finished difference Result 3430 states and 5034 transitions. [2022-11-03 03:34:46,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:34:46,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2022-11-03 03:34:46,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:46,246 INFO L225 Difference]: With dead ends: 3430 [2022-11-03 03:34:46,246 INFO L226 Difference]: Without dead ends: 2255 [2022-11-03 03:34:46,263 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 03:34:46,266 INFO L413 NwaCegarLoop]: 1821 mSDtfsCounter, 1597 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:46,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1597 Valid, 3219 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-03 03:34:46,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2022-11-03 03:34:46,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 2251. [2022-11-03 03:34:46,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 1301 states have (on average 1.2890084550345888) internal successors, (1677), 1346 states have internal predecessors, (1677), 787 states have call successors, (787), 161 states have call predecessors, (787), 160 states have return successors, (783), 765 states have call predecessors, (783), 783 states have call successors, (783) [2022-11-03 03:34:46,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3247 transitions. [2022-11-03 03:34:46,550 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3247 transitions. Word has length 101 [2022-11-03 03:34:46,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:46,554 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 3247 transitions. [2022-11-03 03:34:46,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:34:46,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3247 transitions. [2022-11-03 03:34:46,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-03 03:34:46,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:46,563 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:34:46,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:34:46,563 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 03:34:46,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:46,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1155850056, now seen corresponding path program 1 times [2022-11-03 03:34:46,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:46,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193183489] [2022-11-03 03:34:46,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:46,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:46,815 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-03 03:34:46,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:46,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193183489] [2022-11-03 03:34:46,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193183489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:46,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:34:46,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:34:46,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615142341] [2022-11-03 03:34:46,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:46,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:34:46,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:46,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:34:46,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:34:46,818 INFO L87 Difference]: Start difference. First operand 2251 states and 3247 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 03:34:49,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:51,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:51,206 INFO L93 Difference]: Finished difference Result 6661 states and 9617 transitions. [2022-11-03 03:34:51,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:34:51,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2022-11-03 03:34:51,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:51,241 INFO L225 Difference]: With dead ends: 6661 [2022-11-03 03:34:51,241 INFO L226 Difference]: Without dead ends: 4427 [2022-11-03 03:34:51,253 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 03:34:51,254 INFO L413 NwaCegarLoop]: 1853 mSDtfsCounter, 1640 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 3249 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:51,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 3249 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 533 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-11-03 03:34:51,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4427 states. [2022-11-03 03:34:51,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4427 to 4397. [2022-11-03 03:34:51,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4397 states, 2555 states have (on average 1.2915851272015655) internal successors, (3300), 2649 states have internal predecessors, (3300), 1522 states have call successors, (1522), 320 states have call predecessors, (1522), 317 states have return successors, (1528), 1471 states have call predecessors, (1528), 1518 states have call successors, (1528) [2022-11-03 03:34:51,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4397 states to 4397 states and 6350 transitions. [2022-11-03 03:34:51,536 INFO L78 Accepts]: Start accepts. Automaton has 4397 states and 6350 transitions. Word has length 105 [2022-11-03 03:34:51,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:51,538 INFO L495 AbstractCegarLoop]: Abstraction has 4397 states and 6350 transitions. [2022-11-03 03:34:51,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 03:34:51,538 INFO L276 IsEmpty]: Start isEmpty. Operand 4397 states and 6350 transitions. [2022-11-03 03:34:51,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-03 03:34:51,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:51,541 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:34:51,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:34:51,542 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 03:34:51,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:51,551 INFO L85 PathProgramCache]: Analyzing trace with hash -331408805, now seen corresponding path program 1 times [2022-11-03 03:34:51,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:51,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109996741] [2022-11-03 03:34:51,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:51,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:51,808 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-03 03:34:51,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:51,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109996741] [2022-11-03 03:34:51,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109996741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:51,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:34:51,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:34:51,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863071415] [2022-11-03 03:34:51,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:51,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:34:51,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:51,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:34:51,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:34:51,811 INFO L87 Difference]: Start difference. First operand 4397 states and 6350 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 03:34:54,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:54,875 INFO L93 Difference]: Finished difference Result 12551 states and 18094 transitions. [2022-11-03 03:34:54,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:34:54,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2022-11-03 03:34:54,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:54,939 INFO L225 Difference]: With dead ends: 12551 [2022-11-03 03:34:54,939 INFO L226 Difference]: Without dead ends: 8171 [2022-11-03 03:34:54,966 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 03:34:54,970 INFO L413 NwaCegarLoop]: 1843 mSDtfsCounter, 1454 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:54,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 3232 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 03:34:54,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8171 states. [2022-11-03 03:34:55,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8171 to 8137. [2022-11-03 03:34:55,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8137 states, 4739 states have (on average 1.293943870014771) internal successors, (6132), 4921 states have internal predecessors, (6132), 2784 states have call successors, (2784), 618 states have call predecessors, (2784), 611 states have return successors, (2806), 2681 states have call predecessors, (2806), 2780 states have call successors, (2806) [2022-11-03 03:34:55,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8137 states to 8137 states and 11722 transitions. [2022-11-03 03:34:55,602 INFO L78 Accepts]: Start accepts. Automaton has 8137 states and 11722 transitions. Word has length 105 [2022-11-03 03:34:55,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:55,602 INFO L495 AbstractCegarLoop]: Abstraction has 8137 states and 11722 transitions. [2022-11-03 03:34:55,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 03:34:55,603 INFO L276 IsEmpty]: Start isEmpty. Operand 8137 states and 11722 transitions. [2022-11-03 03:34:55,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-03 03:34:55,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:55,606 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:34:55,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:34:55,606 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 03:34:55,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:55,607 INFO L85 PathProgramCache]: Analyzing trace with hash -197312477, now seen corresponding path program 1 times [2022-11-03 03:34:55,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:55,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985916502] [2022-11-03 03:34:55,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:55,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:56,272 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-03 03:34:56,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:56,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985916502] [2022-11-03 03:34:56,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985916502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:56,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:34:56,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:34:56,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557497847] [2022-11-03 03:34:56,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:56,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:34:56,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:56,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:34:56,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:34:56,277 INFO L87 Difference]: Start difference. First operand 8137 states and 11722 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:35:00,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:05,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:05,301 INFO L93 Difference]: Finished difference Result 18696 states and 26839 transitions. [2022-11-03 03:35:05,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:35:05,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 108 [2022-11-03 03:35:05,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:05,383 INFO L225 Difference]: With dead ends: 18696 [2022-11-03 03:35:05,383 INFO L226 Difference]: Without dead ends: 10576 [2022-11-03 03:35:05,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:35:05,439 INFO L413 NwaCegarLoop]: 2147 mSDtfsCounter, 3552 mSDsluCounter, 3743 mSDsCounter, 0 mSdLazyCounter, 2489 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3651 SdHoareTripleChecker+Valid, 5117 SdHoareTripleChecker+Invalid, 2994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 2489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:05,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3651 Valid, 5117 Invalid, 2994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 2489 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-03 03:35:05,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10576 states. [2022-11-03 03:35:06,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10576 to 10504. [2022-11-03 03:35:06,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10504 states, 6287 states have (on average 1.3034833783998727) internal successors, (8195), 6538 states have internal predecessors, (8195), 3375 states have call successors, (3375), 854 states have call predecessors, (3375), 839 states have return successors, (3384), 3221 states have call predecessors, (3384), 3371 states have call successors, (3384) [2022-11-03 03:35:06,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10504 states to 10504 states and 14954 transitions. [2022-11-03 03:35:06,152 INFO L78 Accepts]: Start accepts. Automaton has 10504 states and 14954 transitions. Word has length 108 [2022-11-03 03:35:06,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:06,152 INFO L495 AbstractCegarLoop]: Abstraction has 10504 states and 14954 transitions. [2022-11-03 03:35:06,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:35:06,154 INFO L276 IsEmpty]: Start isEmpty. Operand 10504 states and 14954 transitions. [2022-11-03 03:35:06,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 03:35:06,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:06,155 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:06,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:35:06,156 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:35:06,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:06,157 INFO L85 PathProgramCache]: Analyzing trace with hash 198267755, now seen corresponding path program 1 times [2022-11-03 03:35:06,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:06,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708304010] [2022-11-03 03:35:06,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:06,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:06,337 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-03 03:35:06,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:06,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708304010] [2022-11-03 03:35:06,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708304010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:06,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:35:06,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:35:06,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077851997] [2022-11-03 03:35:06,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:06,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:35:06,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:06,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:35:06,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:35:06,340 INFO L87 Difference]: Start difference. First operand 10504 states and 14954 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:35:08,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:10,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:10,620 INFO L93 Difference]: Finished difference Result 27897 states and 39637 transitions. [2022-11-03 03:35:10,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:35:10,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 110 [2022-11-03 03:35:10,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:10,725 INFO L225 Difference]: With dead ends: 27897 [2022-11-03 03:35:10,725 INFO L226 Difference]: Without dead ends: 17410 [2022-11-03 03:35:10,783 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 03:35:10,785 INFO L413 NwaCegarLoop]: 1803 mSDtfsCounter, 1520 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 3188 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:10,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 3188 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-03 03:35:10,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17410 states. [2022-11-03 03:35:11,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17410 to 17378. [2022-11-03 03:35:11,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17378 states, 10333 states have (on average 1.2898480596148263) internal successors, (13328), 10738 states have internal predecessors, (13328), 5622 states have call successors, (5622), 1449 states have call predecessors, (5622), 1420 states have return successors, (5647), 5349 states have call predecessors, (5647), 5618 states have call successors, (5647) [2022-11-03 03:35:11,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17378 states to 17378 states and 24597 transitions. [2022-11-03 03:35:11,992 INFO L78 Accepts]: Start accepts. Automaton has 17378 states and 24597 transitions. Word has length 110 [2022-11-03 03:35:11,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:11,993 INFO L495 AbstractCegarLoop]: Abstraction has 17378 states and 24597 transitions. [2022-11-03 03:35:11,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:35:11,994 INFO L276 IsEmpty]: Start isEmpty. Operand 17378 states and 24597 transitions. [2022-11-03 03:35:11,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-03 03:35:11,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:11,998 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:11,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:35:12,002 INFO L420 AbstractCegarLoop]: === Iteration 6 === 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 03:35:12,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:12,003 INFO L85 PathProgramCache]: Analyzing trace with hash 563933831, now seen corresponding path program 1 times [2022-11-03 03:35:12,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:12,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562968148] [2022-11-03 03:35:12,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:12,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:12,209 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-11-03 03:35:12,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:12,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562968148] [2022-11-03 03:35:12,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562968148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:12,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:35:12,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:35:12,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974932503] [2022-11-03 03:35:12,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:12,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:35:12,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:12,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:35:12,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:35:12,212 INFO L87 Difference]: Start difference. First operand 17378 states and 24597 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 03:35:15,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:15,955 INFO L93 Difference]: Finished difference Result 50976 states and 72189 transitions. [2022-11-03 03:35:15,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:35:15,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 123 [2022-11-03 03:35:15,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:16,147 INFO L225 Difference]: With dead ends: 50976 [2022-11-03 03:35:16,147 INFO L226 Difference]: Without dead ends: 33615 [2022-11-03 03:35:16,226 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 03:35:16,228 INFO L413 NwaCegarLoop]: 2018 mSDtfsCounter, 1647 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 3440 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:16,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1647 Valid, 3440 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-03 03:35:16,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33615 states. [2022-11-03 03:35:18,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33615 to 33541. [2022-11-03 03:35:18,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33541 states, 19920 states have (on average 1.2901606425702812) internal successors, (25700), 20748 states have internal predecessors, (25700), 10865 states have call successors, (10865), 2810 states have call predecessors, (10865), 2753 states have return successors, (10919), 10292 states have call predecessors, (10919), 10861 states have call successors, (10919) [2022-11-03 03:35:18,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33541 states to 33541 states and 47484 transitions. [2022-11-03 03:35:18,547 INFO L78 Accepts]: Start accepts. Automaton has 33541 states and 47484 transitions. Word has length 123 [2022-11-03 03:35:18,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:18,548 INFO L495 AbstractCegarLoop]: Abstraction has 33541 states and 47484 transitions. [2022-11-03 03:35:18,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 03:35:18,548 INFO L276 IsEmpty]: Start isEmpty. Operand 33541 states and 47484 transitions. [2022-11-03 03:35:18,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-03 03:35:18,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:18,553 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:18,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:35:18,553 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:35:18,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:18,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1458511418, now seen corresponding path program 1 times [2022-11-03 03:35:18,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:18,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482291284] [2022-11-03 03:35:18,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:18,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:19,266 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-11-03 03:35:19,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:19,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482291284] [2022-11-03 03:35:19,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482291284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:19,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:35:19,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:35:19,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295038886] [2022-11-03 03:35:19,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:19,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:35:19,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:19,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:35:19,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:35:19,268 INFO L87 Difference]: Start difference. First operand 33541 states and 47484 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:35:21,743 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 03:35:24,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:24,673 INFO L93 Difference]: Finished difference Result 33547 states and 47489 transitions. [2022-11-03 03:35:24,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:35:24,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2022-11-03 03:35:24,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:24,829 INFO L225 Difference]: With dead ends: 33547 [2022-11-03 03:35:24,829 INFO L226 Difference]: Without dead ends: 33545 [2022-11-03 03:35:24,843 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 03:35:24,844 INFO L413 NwaCegarLoop]: 1421 mSDtfsCounter, 1639 mSDsluCounter, 3356 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 4249 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:24,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 4249 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-03 03:35:24,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33545 states. [2022-11-03 03:35:27,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33545 to 33545. [2022-11-03 03:35:27,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33545 states, 19923 states have (on average 1.2901169502584953) internal successors, (25703), 20751 states have internal predecessors, (25703), 10865 states have call successors, (10865), 2811 states have call predecessors, (10865), 2754 states have return successors, (10919), 10292 states have call predecessors, (10919), 10861 states have call successors, (10919) [2022-11-03 03:35:27,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33545 states to 33545 states and 47487 transitions. [2022-11-03 03:35:27,378 INFO L78 Accepts]: Start accepts. Automaton has 33545 states and 47487 transitions. Word has length 146 [2022-11-03 03:35:27,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:27,379 INFO L495 AbstractCegarLoop]: Abstraction has 33545 states and 47487 transitions. [2022-11-03 03:35:27,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:35:27,380 INFO L276 IsEmpty]: Start isEmpty. Operand 33545 states and 47487 transitions. [2022-11-03 03:35:27,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-03 03:35:27,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:27,382 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:27,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:35:27,383 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 03:35:27,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:27,383 INFO L85 PathProgramCache]: Analyzing trace with hash -48427560, now seen corresponding path program 1 times [2022-11-03 03:35:27,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:27,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657459346] [2022-11-03 03:35:27,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:27,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:27,810 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-11-03 03:35:27,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:27,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657459346] [2022-11-03 03:35:27,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657459346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:27,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:35:27,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:35:27,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41589096] [2022-11-03 03:35:27,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:27,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:35:27,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:27,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:35:27,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:35:27,813 INFO L87 Difference]: Start difference. First operand 33545 states and 47487 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, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 03:35:33,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:33,637 INFO L93 Difference]: Finished difference Result 33551 states and 47492 transitions. [2022-11-03 03:35:33,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:35:33,638 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, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 151 [2022-11-03 03:35:33,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:33,808 INFO L225 Difference]: With dead ends: 33551 [2022-11-03 03:35:33,808 INFO L226 Difference]: Without dead ends: 33549 [2022-11-03 03:35:33,828 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 03:35:33,828 INFO L413 NwaCegarLoop]: 1424 mSDtfsCounter, 1634 mSDsluCounter, 3356 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:33,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1645 Valid, 4252 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-03 03:35:33,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33549 states. [2022-11-03 03:35:35,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33549 to 33549. [2022-11-03 03:35:35,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33549 states, 19926 states have (on average 1.2900732711030813) internal successors, (25706), 20754 states have internal predecessors, (25706), 10865 states have call successors, (10865), 2812 states have call predecessors, (10865), 2755 states have return successors, (10919), 10292 states have call predecessors, (10919), 10861 states have call successors, (10919) [2022-11-03 03:35:35,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33549 states to 33549 states and 47490 transitions. [2022-11-03 03:35:35,865 INFO L78 Accepts]: Start accepts. Automaton has 33549 states and 47490 transitions. Word has length 151 [2022-11-03 03:35:35,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:35,865 INFO L495 AbstractCegarLoop]: Abstraction has 33549 states and 47490 transitions. [2022-11-03 03:35:35,866 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, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 03:35:35,866 INFO L276 IsEmpty]: Start isEmpty. Operand 33549 states and 47490 transitions. [2022-11-03 03:35:35,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-03 03:35:35,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:35,870 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:35,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:35:35,870 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 03:35:35,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:35,871 INFO L85 PathProgramCache]: Analyzing trace with hash 252135610, now seen corresponding path program 1 times [2022-11-03 03:35:35,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:35,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407777852] [2022-11-03 03:35:35,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:35,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2022-11-03 03:35:36,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:36,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407777852] [2022-11-03 03:35:36,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407777852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:36,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:35:36,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:35:36,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94922463] [2022-11-03 03:35:36,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:36,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:35:36,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:36,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:35:36,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:35:36,387 INFO L87 Difference]: Start difference. First operand 33549 states and 47490 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, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 03:35:38,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:42,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:42,885 INFO L93 Difference]: Finished difference Result 33555 states and 47495 transitions. [2022-11-03 03:35:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:35:42,886 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, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 156 [2022-11-03 03:35:42,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:43,031 INFO L225 Difference]: With dead ends: 33555 [2022-11-03 03:35:43,031 INFO L226 Difference]: Without dead ends: 33553 [2022-11-03 03:35:43,053 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 03:35:43,056 INFO L413 NwaCegarLoop]: 1424 mSDtfsCounter, 1634 mSDsluCounter, 3356 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:43,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1644 Valid, 4252 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-03 03:35:43,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33553 states. [2022-11-03 03:35:45,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33553 to 33553. [2022-11-03 03:35:45,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33553 states, 19929 states have (on average 1.2900296050980982) internal successors, (25709), 20757 states have internal predecessors, (25709), 10865 states have call successors, (10865), 2813 states have call predecessors, (10865), 2756 states have return successors, (10919), 10292 states have call predecessors, (10919), 10861 states have call successors, (10919) [2022-11-03 03:35:45,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33553 states to 33553 states and 47493 transitions. [2022-11-03 03:35:45,302 INFO L78 Accepts]: Start accepts. Automaton has 33553 states and 47493 transitions. Word has length 156 [2022-11-03 03:35:45,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:45,303 INFO L495 AbstractCegarLoop]: Abstraction has 33553 states and 47493 transitions. [2022-11-03 03:35:45,303 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, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 03:35:45,303 INFO L276 IsEmpty]: Start isEmpty. Operand 33553 states and 47493 transitions. [2022-11-03 03:35:45,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-03 03:35:45,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:45,307 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:45,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:35:45,308 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 03:35:45,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:45,309 INFO L85 PathProgramCache]: Analyzing trace with hash 439722712, now seen corresponding path program 1 times [2022-11-03 03:35:45,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:45,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482998201] [2022-11-03 03:35:45,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:45,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:45,690 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2022-11-03 03:35:45,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:45,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482998201] [2022-11-03 03:35:45,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482998201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:45,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:35:45,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:35:45,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644869392] [2022-11-03 03:35:45,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:45,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:35:45,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:45,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:35:45,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:35:45,693 INFO L87 Difference]: Start difference. First operand 33553 states and 47493 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, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 03:35:47,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:51,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:51,818 INFO L93 Difference]: Finished difference Result 33559 states and 47498 transitions. [2022-11-03 03:35:51,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:35:51,819 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, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 161 [2022-11-03 03:35:51,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:51,944 INFO L225 Difference]: With dead ends: 33559 [2022-11-03 03:35:51,944 INFO L226 Difference]: Without dead ends: 33557 [2022-11-03 03:35:51,966 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 03:35:51,967 INFO L413 NwaCegarLoop]: 1424 mSDtfsCounter, 1634 mSDsluCounter, 3356 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:51,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1643 Valid, 4252 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-03 03:35:51,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33557 states. [2022-11-03 03:35:53,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33557 to 33557. [2022-11-03 03:35:53,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33557 states, 19932 states have (on average 1.2899859522376078) internal successors, (25712), 20760 states have internal predecessors, (25712), 10865 states have call successors, (10865), 2814 states have call predecessors, (10865), 2757 states have return successors, (10919), 10292 states have call predecessors, (10919), 10861 states have call successors, (10919) [2022-11-03 03:35:54,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33557 states to 33557 states and 47496 transitions. [2022-11-03 03:35:54,015 INFO L78 Accepts]: Start accepts. Automaton has 33557 states and 47496 transitions. Word has length 161 [2022-11-03 03:35:54,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:54,016 INFO L495 AbstractCegarLoop]: Abstraction has 33557 states and 47496 transitions. [2022-11-03 03:35:54,017 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, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 03:35:54,017 INFO L276 IsEmpty]: Start isEmpty. Operand 33557 states and 47496 transitions. [2022-11-03 03:35:54,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-03 03:35:54,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:54,021 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:54,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:35:54,022 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 03:35:54,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:54,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1556217030, now seen corresponding path program 1 times [2022-11-03 03:35:54,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:54,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279710954] [2022-11-03 03:35:54,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:54,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:54,530 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2022-11-03 03:35:54,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:54,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279710954] [2022-11-03 03:35:54,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279710954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:54,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:35:54,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:35:54,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564149558] [2022-11-03 03:35:54,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:54,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:35:54,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:54,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:35:54,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:35:54,533 INFO L87 Difference]: Start difference. First operand 33557 states and 47496 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, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:35:59,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:59,771 INFO L93 Difference]: Finished difference Result 33563 states and 47501 transitions. [2022-11-03 03:35:59,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:35:59,772 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, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 166 [2022-11-03 03:35:59,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:59,864 INFO L225 Difference]: With dead ends: 33563 [2022-11-03 03:35:59,865 INFO L226 Difference]: Without dead ends: 33561 [2022-11-03 03:35:59,876 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 03:35:59,877 INFO L413 NwaCegarLoop]: 1424 mSDtfsCounter, 1634 mSDsluCounter, 3356 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:59,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1642 Valid, 4252 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-03 03:35:59,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33561 states. [2022-11-03 03:36:01,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33561 to 33561. [2022-11-03 03:36:01,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33561 states, 19935 states have (on average 1.289942312515676) internal successors, (25715), 20763 states have internal predecessors, (25715), 10865 states have call successors, (10865), 2815 states have call predecessors, (10865), 2758 states have return successors, (10919), 10292 states have call predecessors, (10919), 10861 states have call successors, (10919) [2022-11-03 03:36:01,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33561 states to 33561 states and 47499 transitions. [2022-11-03 03:36:01,758 INFO L78 Accepts]: Start accepts. Automaton has 33561 states and 47499 transitions. Word has length 166 [2022-11-03 03:36:01,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:01,758 INFO L495 AbstractCegarLoop]: Abstraction has 33561 states and 47499 transitions. [2022-11-03 03:36:01,759 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, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:36:01,759 INFO L276 IsEmpty]: Start isEmpty. Operand 33561 states and 47499 transitions. [2022-11-03 03:36:01,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-03 03:36:01,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:01,763 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:01,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:36:01,763 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 03:36:01,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:01,764 INFO L85 PathProgramCache]: Analyzing trace with hash -137779240, now seen corresponding path program 1 times [2022-11-03 03:36:01,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:01,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605721143] [2022-11-03 03:36:01,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:01,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:02,299 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2022-11-03 03:36:02,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:02,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605721143] [2022-11-03 03:36:02,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605721143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:02,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:02,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:36:02,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825820096] [2022-11-03 03:36:02,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:02,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:36:02,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:02,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:36:02,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:36:02,303 INFO L87 Difference]: Start difference. First operand 33561 states and 47499 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, (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 03:36:07,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:07,618 INFO L93 Difference]: Finished difference Result 33567 states and 47504 transitions. [2022-11-03 03:36:07,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:36:07,619 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, (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 171 [2022-11-03 03:36:07,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:07,710 INFO L225 Difference]: With dead ends: 33567 [2022-11-03 03:36:07,710 INFO L226 Difference]: Without dead ends: 33565 [2022-11-03 03:36:07,720 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 03:36:07,720 INFO L413 NwaCegarLoop]: 1424 mSDtfsCounter, 1634 mSDsluCounter, 3356 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1641 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:07,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1641 Valid, 4252 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-03 03:36:07,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33565 states. [2022-11-03 03:36:09,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33565 to 33565. [2022-11-03 03:36:09,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33565 states, 19938 states have (on average 1.2898986859263717) internal successors, (25718), 20766 states have internal predecessors, (25718), 10865 states have call successors, (10865), 2816 states have call predecessors, (10865), 2759 states have return successors, (10919), 10292 states have call predecessors, (10919), 10861 states have call successors, (10919) [2022-11-03 03:36:09,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33565 states to 33565 states and 47502 transitions. [2022-11-03 03:36:09,661 INFO L78 Accepts]: Start accepts. Automaton has 33565 states and 47502 transitions. Word has length 171 [2022-11-03 03:36:09,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:09,662 INFO L495 AbstractCegarLoop]: Abstraction has 33565 states and 47502 transitions. [2022-11-03 03:36:09,662 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, (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 03:36:09,662 INFO L276 IsEmpty]: Start isEmpty. Operand 33565 states and 47502 transitions. [2022-11-03 03:36:09,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-03 03:36:09,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:09,667 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:09,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 03:36:09,667 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 03:36:09,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:09,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1432400454, now seen corresponding path program 1 times [2022-11-03 03:36:09,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:09,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030913198] [2022-11-03 03:36:09,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:09,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:10,222 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2022-11-03 03:36:10,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:10,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030913198] [2022-11-03 03:36:10,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030913198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:10,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:10,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:36:10,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390791811] [2022-11-03 03:36:10,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:10,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:36:10,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:10,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:36:10,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:36:10,226 INFO L87 Difference]: Start difference. First operand 33565 states and 47502 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, (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 03:36:15,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:15,672 INFO L93 Difference]: Finished difference Result 33571 states and 47507 transitions. [2022-11-03 03:36:15,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:36:15,674 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, (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 176 [2022-11-03 03:36:15,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:15,788 INFO L225 Difference]: With dead ends: 33571 [2022-11-03 03:36:15,788 INFO L226 Difference]: Without dead ends: 33569 [2022-11-03 03:36:15,807 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 03:36:15,808 INFO L413 NwaCegarLoop]: 1424 mSDtfsCounter, 1634 mSDsluCounter, 3356 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:15,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 4252 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-03 03:36:15,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33569 states.