./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.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_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/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_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/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_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/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 527ba95af45b5d863cb3ca1867267fd54ac6958329e64d7162c5caa88bde96c3 --- 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 03:57:25,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:57:25,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:57:25,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:57:25,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:57:25,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:57:25,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:57:25,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:57:25,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:57:25,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:57:25,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:57:25,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:57:25,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:57:25,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:57:25,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:57:25,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:57:25,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:57:25,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:57:25,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:57:25,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:57:25,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:57:25,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:57:25,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:57:25,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:57:25,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:57:25,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:57:25,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:57:25,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:57:25,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:57:25,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:57:25,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:57:25,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:57:25,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:57:25,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:57:25,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:57:25,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:57:25,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:57:25,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:57:25,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:57:25,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:57:25,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:57:25,751 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:57:25,786 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:57:25,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:57:25,790 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:57:25,790 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:57:25,791 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:57:25,791 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:57:25,792 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:57:25,792 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:57:25,792 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:57:25,793 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:57:25,794 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:57:25,794 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:57:25,794 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:57:25,795 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:57:25,795 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:57:25,795 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:57:25,796 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:57:25,796 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:57:25,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:57:25,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:57:25,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:57:25,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:57:25,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:57:25,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:57:25,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:57:25,800 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:57:25,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:57:25,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:57:25,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:57:25,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:57:25,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:57:25,802 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:57:25,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:57:25,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:57:25,803 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:57:25,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:57:25,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:57:25,803 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:57:25,804 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_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 527ba95af45b5d863cb3ca1867267fd54ac6958329e64d7162c5caa88bde96c3 [2022-11-03 03:57:26,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:57:26,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:57:26,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:57:26,156 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:57:26,157 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:57:26,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2022-11-03 03:57:26,245 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/data/af6f3bbc4/9e9b26bfc7a24e2fb1640c9042a9f02b/FLAGf71f97f7d [2022-11-03 03:57:27,291 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:57:27,292 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2022-11-03 03:57:27,369 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/data/af6f3bbc4/9e9b26bfc7a24e2fb1640c9042a9f02b/FLAGf71f97f7d [2022-11-03 03:57:27,649 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/data/af6f3bbc4/9e9b26bfc7a24e2fb1640c9042a9f02b [2022-11-03 03:57:27,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:57:27,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:57:27,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:57:27,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:57:27,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:57:27,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:57:27" (1/1) ... [2022-11-03 03:57:27,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c90e3c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:27, skipping insertion in model container [2022-11-03 03:57:27,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:57:27" (1/1) ... [2022-11-03 03:57:27,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:57:27,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:57:32,183 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_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470813,470826] [2022-11-03 03:57:32,194 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_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470982,470995] [2022-11-03 03:57:32,194 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_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471149,471162] [2022-11-03 03:57:32,195 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_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471317,471330] [2022-11-03 03:57:32,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:57:32,284 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:57:32,862 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_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470813,470826] [2022-11-03 03:57:32,862 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_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470982,470995] [2022-11-03 03:57:32,863 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_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471149,471162] [2022-11-03 03:57:32,863 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_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471317,471330] [2022-11-03 03:57:32,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:57:33,079 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:57:33,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:33 WrapperNode [2022-11-03 03:57:33,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:57:33,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:57:33,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:57:33,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:57:33,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:33" (1/1) ... [2022-11-03 03:57:33,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:33" (1/1) ... [2022-11-03 03:57:33,672 INFO L138 Inliner]: procedures = 526, calls = 4106, calls flagged for inlining = 232, calls inlined = 215, statements flattened = 8429 [2022-11-03 03:57:33,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:57:33,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:57:33,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:57:33,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:57:33,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:33" (1/1) ... [2022-11-03 03:57:33,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:33" (1/1) ... [2022-11-03 03:57:33,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:33" (1/1) ... [2022-11-03 03:57:33,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:33" (1/1) ... [2022-11-03 03:57:34,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:33" (1/1) ... [2022-11-03 03:57:34,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:33" (1/1) ... [2022-11-03 03:57:34,234 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:33" (1/1) ... [2022-11-03 03:57:34,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:33" (1/1) ... [2022-11-03 03:57:34,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:57:34,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:57:34,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:57:34,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:57:34,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:33" (1/1) ... [2022-11-03 03:57:34,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:57:34,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:57:34,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:57:34,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:57:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure disable_ast [2022-11-03 03:57:34,393 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_ast [2022-11-03 03:57:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:57:34,394 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:57:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 03:57:34,394 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 03:57:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:57:34,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:57:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure type4_infoblock [2022-11-03 03:57:34,394 INFO L138 BoogieDeclarations]: Found implementation of procedure type4_infoblock [2022-11-03 03:57:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_put_cache [2022-11-03 03:57:34,395 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_put_cache [2022-11-03 03:57:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2022-11-03 03:57:34,395 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2022-11-03 03:57:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_de4x5_private [2022-11-03 03:57:34,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_de4x5_private [2022-11-03 03:57:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 03:57:34,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 03:57:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_de4x5_private [2022-11-03 03:57:34,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_de4x5_private [2022-11-03 03:57:34,396 INFO L130 BoogieDeclarations]: Found specification of procedure getfrom_mii [2022-11-03 03:57:34,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getfrom_mii [2022-11-03 03:57:34,396 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_switch_mac_port [2022-11-03 03:57:34,396 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_switch_mac_port [2022-11-03 03:57:34,396 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 03:57:34,397 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 03:57:34,397 INFO L130 BoogieDeclarations]: Found specification of procedure srom_latch [2022-11-03 03:57:34,397 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_latch [2022-11-03 03:57:34,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_69 [2022-11-03 03:57:34,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_69 [2022-11-03 03:57:34,398 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 03:57:34,398 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 03:57:34,398 INFO L130 BoogieDeclarations]: Found specification of procedure build_setup_frame [2022-11-03 03:57:34,398 INFO L138 BoogieDeclarations]: Found implementation of procedure build_setup_frame [2022-11-03 03:57:34,398 INFO L130 BoogieDeclarations]: Found specification of procedure type2_infoblock [2022-11-03 03:57:34,398 INFO L138 BoogieDeclarations]: Found implementation of procedure type2_infoblock [2022-11-03 03:57:34,398 INFO L130 BoogieDeclarations]: Found specification of procedure type0_infoblock [2022-11-03 03:57:34,399 INFO L138 BoogieDeclarations]: Found implementation of procedure type0_infoblock [2022-11-03 03:57:34,399 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2022-11-03 03:57:34,399 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2022-11-03 03:57:34,399 INFO L130 BoogieDeclarations]: Found specification of procedure DevicePresent [2022-11-03 03:57:34,399 INFO L138 BoogieDeclarations]: Found implementation of procedure DevicePresent [2022-11-03 03:57:34,400 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-11-03 03:57:34,401 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-11-03 03:57:34,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 03:57:34,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 03:57:34,401 INFO L130 BoogieDeclarations]: Found specification of procedure dc21143_infoleaf [2022-11-03 03:57:34,401 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21143_infoleaf [2022-11-03 03:57:34,401 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2022-11-03 03:57:34,401 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2022-11-03 03:57:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 03:57:34,402 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 03:57:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 03:57:34,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 03:57:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2022-11-03 03:57:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_sw_reset [2022-11-03 03:57:34,403 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_sw_reset [2022-11-03 03:57:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:57:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-03 03:57:34,403 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-03 03:57:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-03 03:57:34,403 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-03 03:57:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-11-03 03:57:34,404 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-11-03 03:57:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure is_spd_100 [2022-11-03 03:57:34,404 INFO L138 BoogieDeclarations]: Found implementation of procedure is_spd_100 [2022-11-03 03:57:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 03:57:34,405 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 03:57:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:57:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-03 03:57:34,405 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-03 03:57:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure sendto_mii [2022-11-03 03:57:34,405 INFO L138 BoogieDeclarations]: Found implementation of procedure sendto_mii [2022-11-03 03:57:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_rx_buffs [2022-11-03 03:57:34,406 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_rx_buffs [2022-11-03 03:57:34,406 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 03:57:34,406 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 03:57:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 03:57:34,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 03:57:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-03 03:57:34,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-03 03:57:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:57:34,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 03:57:34,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 03:57:34,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:57:34,408 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 03:57:34,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 03:57:34,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:57:34,409 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:57:34,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 03:57:34,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 03:57:34,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 03:57:34,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 03:57:34,410 INFO L130 BoogieDeclarations]: Found specification of procedure ping_media [2022-11-03 03:57:34,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ping_media [2022-11-03 03:57:34,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 03:57:34,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 03:57:34,411 INFO L130 BoogieDeclarations]: Found specification of procedure srom_autoconf [2022-11-03 03:57:34,411 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_autoconf [2022-11-03 03:57:34,411 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 03:57:34,411 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 03:57:34,411 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 03:57:34,411 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 03:57:34,412 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_tx [2022-11-03 03:57:34,412 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_tx [2022-11-03 03:57:34,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 03:57:34,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 03:57:34,415 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-11-03 03:57:34,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-11-03 03:57:34,416 INFO L130 BoogieDeclarations]: Found specification of procedure srom_rd [2022-11-03 03:57:34,417 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_rd [2022-11-03 03:57:34,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:57:34,417 INFO L130 BoogieDeclarations]: Found specification of procedure SetMulticastFilter [2022-11-03 03:57:34,417 INFO L138 BoogieDeclarations]: Found implementation of procedure SetMulticastFilter [2022-11-03 03:57:34,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:57:34,423 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ioctl [2022-11-03 03:57:34,423 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ioctl [2022-11-03 03:57:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 03:57:34,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 03:57:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 03:57:34,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 03:57:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:57:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:57:34,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:57:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure getfrom_srom [2022-11-03 03:57:34,424 INFO L138 BoogieDeclarations]: Found implementation of procedure getfrom_srom [2022-11-03 03:57:34,425 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-03 03:57:34,425 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-03 03:57:34,425 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:57:34,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:57:34,425 INFO L130 BoogieDeclarations]: Found specification of procedure mii_swap [2022-11-03 03:57:34,425 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_swap [2022-11-03 03:57:34,425 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_reset_phy [2022-11-03 03:57:34,426 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_reset_phy [2022-11-03 03:57:34,426 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_putb_cache [2022-11-03 03:57:34,426 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_putb_cache [2022-11-03 03:57:34,426 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-03 03:57:34,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-03 03:57:34,426 INFO L130 BoogieDeclarations]: Found specification of procedure dc21142_infoleaf [2022-11-03 03:57:34,426 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21142_infoleaf [2022-11-03 03:57:34,426 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 03:57:34,426 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 03:57:34,427 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_get_stats [2022-11-03 03:57:34,427 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_get_stats [2022-11-03 03:57:34,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 03:57:34,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 03:57:34,427 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-03 03:57:34,427 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-03 03:57:34,427 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init_connection [2022-11-03 03:57:34,427 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init_connection [2022-11-03 03:57:34,427 INFO L130 BoogieDeclarations]: Found specification of procedure mii_wr [2022-11-03 03:57:34,427 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_wr [2022-11-03 03:57:34,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:57:34,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:57:34,428 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_state [2022-11-03 03:57:34,428 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_state [2022-11-03 03:57:34,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-03 03:57:34,428 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-03 03:57:34,428 INFO L130 BoogieDeclarations]: Found specification of procedure type3_infoblock [2022-11-03 03:57:34,428 INFO L138 BoogieDeclarations]: Found implementation of procedure type3_infoblock [2022-11-03 03:57:34,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:57:34,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:57:34,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:57:34,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:57:34,429 INFO L130 BoogieDeclarations]: Found specification of procedure reset_init_sia [2022-11-03 03:57:34,429 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_init_sia [2022-11-03 03:57:34,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 03:57:34,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 03:57:34,429 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-03 03:57:34,429 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-03 03:57:34,429 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_alloc_rx_buff [2022-11-03 03:57:34,430 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_alloc_rx_buff [2022-11-03 03:57:34,430 INFO L130 BoogieDeclarations]: Found specification of procedure test_for_100Mb [2022-11-03 03:57:34,430 INFO L138 BoogieDeclarations]: Found implementation of procedure test_for_100Mb [2022-11-03 03:57:34,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 03:57:34,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 03:57:34,430 INFO L130 BoogieDeclarations]: Found specification of procedure type5_infoblock [2022-11-03 03:57:34,430 INFO L138 BoogieDeclarations]: Found implementation of procedure type5_infoblock [2022-11-03 03:57:34,430 INFO L130 BoogieDeclarations]: Found specification of procedure load_packet [2022-11-03 03:57:34,430 INFO L138 BoogieDeclarations]: Found implementation of procedure load_packet [2022-11-03 03:57:34,431 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140m_autoconf [2022-11-03 03:57:34,431 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140m_autoconf [2022-11-03 03:57:34,431 INFO L130 BoogieDeclarations]: Found specification of procedure is_100_up [2022-11-03 03:57:34,431 INFO L138 BoogieDeclarations]: Found implementation of procedure is_100_up [2022-11-03 03:57:34,431 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_open [2022-11-03 03:57:34,431 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_open [2022-11-03 03:57:34,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:57:34,431 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:57:34,431 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ta [2022-11-03 03:57:34,431 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ta [2022-11-03 03:57:34,432 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 03:57:34,432 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 03:57:34,432 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_autoconf [2022-11-03 03:57:34,432 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_autoconf [2022-11-03 03:57:34,432 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2022-11-03 03:57:34,432 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2022-11-03 03:57:34,432 INFO L130 BoogieDeclarations]: Found specification of procedure test_mii_reg [2022-11-03 03:57:34,432 INFO L138 BoogieDeclarations]: Found implementation of procedure test_mii_reg [2022-11-03 03:57:34,432 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_cache_state [2022-11-03 03:57:34,432 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_cache_state [2022-11-03 03:57:34,433 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-03 03:57:34,433 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-03 03:57:34,433 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_pci_remove [2022-11-03 03:57:34,433 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_pci_remove [2022-11-03 03:57:34,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:57:34,433 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_dbg_media [2022-11-03 03:57:34,433 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_dbg_media [2022-11-03 03:57:34,433 INFO L130 BoogieDeclarations]: Found specification of procedure autoconf_media [2022-11-03 03:57:34,433 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconf_media [2022-11-03 03:57:34,434 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_autoconf [2022-11-03 03:57:34,434 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_autoconf [2022-11-03 03:57:34,434 INFO L130 BoogieDeclarations]: Found specification of procedure mii_rd [2022-11-03 03:57:34,434 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_rd [2022-11-03 03:57:34,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:57:34,434 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ast [2022-11-03 03:57:34,434 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ast [2022-11-03 03:57:34,434 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2022-11-03 03:57:34,434 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2022-11-03 03:57:34,434 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2022-11-03 03:57:34,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2022-11-03 03:57:34,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:57:34,435 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-03 03:57:34,435 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-03 03:57:34,435 INFO L130 BoogieDeclarations]: Found specification of procedure is_10_up [2022-11-03 03:57:34,435 INFO L138 BoogieDeclarations]: Found implementation of procedure is_10_up [2022-11-03 03:57:34,435 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 03:57:34,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 03:57:34,435 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-03 03:57:34,435 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-03 03:57:34,436 INFO L130 BoogieDeclarations]: Found specification of procedure is_anc_capable [2022-11-03 03:57:34,436 INFO L138 BoogieDeclarations]: Found implementation of procedure is_anc_capable [2022-11-03 03:57:34,436 INFO L130 BoogieDeclarations]: Found specification of procedure type1_infoblock [2022-11-03 03:57:34,436 INFO L138 BoogieDeclarations]: Found implementation of procedure type1_infoblock [2022-11-03 03:57:34,436 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 03:57:34,436 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 03:57:34,436 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-03 03:57:34,436 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-03 03:57:34,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-03 03:57:34,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-03 03:57:34,437 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140_infoleaf [2022-11-03 03:57:34,437 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140_infoleaf [2022-11-03 03:57:34,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 03:57:34,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 03:57:34,437 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-03 03:57:34,437 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-03 03:57:34,437 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_queue_pkt [2022-11-03 03:57:34,437 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_queue_pkt [2022-11-03 03:57:34,437 INFO L130 BoogieDeclarations]: Found specification of procedure test_media [2022-11-03 03:57:34,438 INFO L138 BoogieDeclarations]: Found implementation of procedure test_media [2022-11-03 03:57:34,438 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_tx_buffs [2022-11-03 03:57:34,438 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_tx_buffs [2022-11-03 03:57:34,438 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2022-11-03 03:57:34,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2022-11-03 03:57:34,438 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-03 03:57:34,438 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-03 03:57:34,438 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 03:57:34,438 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 03:57:34,438 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 03:57:34,439 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 03:57:34,439 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init [2022-11-03 03:57:34,439 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init [2022-11-03 03:57:34,439 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-03 03:57:34,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-03 03:57:34,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_73 [2022-11-03 03:57:34,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_73 [2022-11-03 03:57:34,439 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_infoleaf [2022-11-03 03:57:34,439 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_infoleaf [2022-11-03 03:57:34,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:57:34,440 INFO L130 BoogieDeclarations]: Found specification of procedure srom_exec [2022-11-03 03:57:34,440 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_exec [2022-11-03 03:57:34,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:57:34,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:57:34,440 INFO L130 BoogieDeclarations]: Found specification of procedure gep_wr [2022-11-03 03:57:34,440 INFO L138 BoogieDeclarations]: Found implementation of procedure gep_wr [2022-11-03 03:57:34,440 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 03:57:34,440 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 03:57:34,440 INFO L130 BoogieDeclarations]: Found specification of procedure sendto_srom [2022-11-03 03:57:34,440 INFO L138 BoogieDeclarations]: Found implementation of procedure sendto_srom [2022-11-03 03:57:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-03 03:57:34,441 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-03 03:57:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_get_cache [2022-11-03 03:57:34,441 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_get_cache [2022-11-03 03:57:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_suspect_state [2022-11-03 03:57:34,441 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_suspect_state [2022-11-03 03:57:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_dbg_mii [2022-11-03 03:57:34,441 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_dbg_mii [2022-11-03 03:57:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure compact_infoblock [2022-11-03 03:57:34,441 INFO L138 BoogieDeclarations]: Found implementation of procedure compact_infoblock [2022-11-03 03:57:34,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 03:57:34,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 03:57:34,442 INFO L130 BoogieDeclarations]: Found specification of procedure gep_rd [2022-11-03 03:57:34,442 INFO L138 BoogieDeclarations]: Found implementation of procedure gep_rd [2022-11-03 03:57:34,442 INFO L130 BoogieDeclarations]: Found specification of procedure mii_address [2022-11-03 03:57:34,442 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_address [2022-11-03 03:57:34,442 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_tx_buff [2022-11-03 03:57:34,442 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_tx_buff [2022-11-03 03:57:34,442 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_setup_intr [2022-11-03 03:57:34,442 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_setup_intr [2022-11-03 03:57:34,443 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_save_skbs [2022-11-03 03:57:34,443 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_save_skbs [2022-11-03 03:57:34,443 INFO L130 BoogieDeclarations]: Found specification of procedure dc2114x_autoconf [2022-11-03 03:57:34,443 INFO L138 BoogieDeclarations]: Found implementation of procedure dc2114x_autoconf [2022-11-03 03:57:34,443 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-03 03:57:34,443 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-03 03:57:34,443 INFO L130 BoogieDeclarations]: Found specification of procedure srom_map_media [2022-11-03 03:57:34,443 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_map_media [2022-11-03 03:57:34,443 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_strncmp [2022-11-03 03:57:34,443 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_strncmp [2022-11-03 03:57:34,444 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-03 03:57:34,444 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-03 03:57:34,444 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_close [2022-11-03 03:57:34,444 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_close [2022-11-03 03:57:34,444 INFO L130 BoogieDeclarations]: Found specification of procedure yawn [2022-11-03 03:57:34,444 INFO L138 BoogieDeclarations]: Found implementation of procedure yawn [2022-11-03 03:57:34,444 INFO L130 BoogieDeclarations]: Found specification of procedure mii_wdata [2022-11-03 03:57:34,444 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_wdata [2022-11-03 03:57:34,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:57:34,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 03:57:34,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 03:57:34,445 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-03 03:57:35,755 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:57:35,760 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:57:36,183 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:58:08,091 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:58:11,605 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:58:11,606 INFO L300 CfgBuilder]: Removed 17 assume(true) statements. [2022-11-03 03:58:11,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:58:11 BoogieIcfgContainer [2022-11-03 03:58:11,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:58:11,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:58:11,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:58:11,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:58:11,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:57:27" (1/3) ... [2022-11-03 03:58:11,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f1764d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:58:11, skipping insertion in model container [2022-11-03 03:58:11,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:33" (2/3) ... [2022-11-03 03:58:11,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f1764d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:58:11, skipping insertion in model container [2022-11-03 03:58:11,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:58:11" (3/3) ... [2022-11-03 03:58:11,624 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2022-11-03 03:58:11,645 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:58:11,645 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 03:58:11,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:58:11,788 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;@763ab014, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:58:11,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 03:58:11,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 2945 states, 1835 states have (on average 1.3416893732970028) internal successors, (2462), 1912 states have internal predecessors, (2462), 972 states have call successors, (972), 151 states have call predecessors, (972), 150 states have return successors, (963), 949 states have call predecessors, (963), 963 states have call successors, (963) [2022-11-03 03:58:11,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 03:58:11,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:58:11,813 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:58:11,814 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 03:58:11,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:58:11,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1111459102, now seen corresponding path program 1 times [2022-11-03 03:58:11,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:58:11,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236728749] [2022-11-03 03:58:11,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:58:11,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:58:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:58:13,111 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 03:58:13,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:58:13,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236728749] [2022-11-03 03:58:13,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236728749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:58:13,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:58:13,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:58:13,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164139263] [2022-11-03 03:58:13,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:58:13,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:58:13,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:58:13,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:58:13,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:58:13,162 INFO L87 Difference]: Start difference. First operand has 2945 states, 1835 states have (on average 1.3416893732970028) internal successors, (2462), 1912 states have internal predecessors, (2462), 972 states have call successors, (972), 151 states have call predecessors, (972), 150 states have return successors, (963), 949 states have call predecessors, (963), 963 states have call successors, (963) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:58:15,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:17,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:19,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:25,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:58:25,813 INFO L93 Difference]: Finished difference Result 5824 states and 8875 transitions. [2022-11-03 03:58:25,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:58:25,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2022-11-03 03:58:25,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:58:25,862 INFO L225 Difference]: With dead ends: 5824 [2022-11-03 03:58:25,863 INFO L226 Difference]: Without dead ends: 2885 [2022-11-03 03:58:25,891 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 03:58:25,894 INFO L413 NwaCegarLoop]: 3800 mSDtfsCounter, 4277 mSDsluCounter, 8570 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4290 SdHoareTripleChecker+Valid, 11386 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:58:25,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4290 Valid, 11386 Invalid, 1497 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1494 Invalid, 2 Unknown, 0 Unchecked, 12.2s Time] [2022-11-03 03:58:25,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2022-11-03 03:58:26,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 2885. [2022-11-03 03:58:26,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2885 states, 1785 states have (on average 1.3355742296918767) internal successors, (2384), 1843 states have internal predecessors, (2384), 947 states have call successors, (947), 151 states have call predecessors, (947), 150 states have return successors, (944), 930 states have call predecessors, (944), 944 states have call successors, (944) [2022-11-03 03:58:26,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2885 states to 2885 states and 4275 transitions. [2022-11-03 03:58:26,158 INFO L78 Accepts]: Start accepts. Automaton has 2885 states and 4275 transitions. Word has length 35 [2022-11-03 03:58:26,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:58:26,161 INFO L495 AbstractCegarLoop]: Abstraction has 2885 states and 4275 transitions. [2022-11-03 03:58:26,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:58:26,161 INFO L276 IsEmpty]: Start isEmpty. Operand 2885 states and 4275 transitions. [2022-11-03 03:58:26,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 03:58:26,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:58:26,164 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:58:26,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:58:26,165 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:58:26,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:58:26,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1127641677, now seen corresponding path program 1 times [2022-11-03 03:58:26,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:58:26,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547907499] [2022-11-03 03:58:26,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:58:26,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:58:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:58:26,760 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 03:58:26,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:58:26,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547907499] [2022-11-03 03:58:26,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547907499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:58:26,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:58:26,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:58:26,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359424921] [2022-11-03 03:58:26,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:58:26,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:58:26,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:58:26,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:58:26,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:58:26,764 INFO L87 Difference]: Start difference. First operand 2885 states and 4275 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:58:28,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:35,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:58:35,951 INFO L93 Difference]: Finished difference Result 2891 states and 4280 transitions. [2022-11-03 03:58:35,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:58:35,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 41 [2022-11-03 03:58:35,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:58:35,973 INFO L225 Difference]: With dead ends: 2891 [2022-11-03 03:58:35,973 INFO L226 Difference]: Without dead ends: 2889 [2022-11-03 03:58:35,976 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 03:58:35,977 INFO L413 NwaCegarLoop]: 3780 mSDtfsCounter, 4249 mSDsluCounter, 8522 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4260 SdHoareTripleChecker+Valid, 11320 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:58:35,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4260 Valid, 11320 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1493 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2022-11-03 03:58:35,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2022-11-03 03:58:36,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 2889. [2022-11-03 03:58:36,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2889 states, 1788 states have (on average 1.3350111856823266) internal successors, (2387), 1846 states have internal predecessors, (2387), 947 states have call successors, (947), 152 states have call predecessors, (947), 151 states have return successors, (944), 930 states have call predecessors, (944), 944 states have call successors, (944) [2022-11-03 03:58:36,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2889 states to 2889 states and 4278 transitions. [2022-11-03 03:58:36,158 INFO L78 Accepts]: Start accepts. Automaton has 2889 states and 4278 transitions. Word has length 41 [2022-11-03 03:58:36,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:58:36,158 INFO L495 AbstractCegarLoop]: Abstraction has 2889 states and 4278 transitions. [2022-11-03 03:58:36,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:58:36,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2889 states and 4278 transitions. [2022-11-03 03:58:36,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-03 03:58:36,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:58:36,160 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:58:36,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:58:36,161 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:58:36,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:58:36,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1583761186, now seen corresponding path program 1 times [2022-11-03 03:58:36,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:58:36,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384610059] [2022-11-03 03:58:36,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:58:36,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:58:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:58:36,654 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 03:58:36,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:58:36,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384610059] [2022-11-03 03:58:36,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384610059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:58:36,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:58:36,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:58:36,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929817431] [2022-11-03 03:58:36,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:58:36,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:58:36,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:58:36,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:58:36,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:58:36,662 INFO L87 Difference]: Start difference. First operand 2889 states and 4278 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:58:38,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:41,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:48,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:49,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:58:49,447 INFO L93 Difference]: Finished difference Result 2902 states and 4292 transitions. [2022-11-03 03:58:49,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:58:49,448 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 45 [2022-11-03 03:58:49,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:58:49,467 INFO L225 Difference]: With dead ends: 2902 [2022-11-03 03:58:49,467 INFO L226 Difference]: Without dead ends: 2900 [2022-11-03 03:58:49,470 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 03:58:49,471 INFO L413 NwaCegarLoop]: 3782 mSDtfsCounter, 4248 mSDsluCounter, 8532 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4260 SdHoareTripleChecker+Valid, 11330 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:58:49,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4260 Valid, 11330 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1495 Invalid, 2 Unknown, 0 Unchecked, 12.5s Time] [2022-11-03 03:58:49,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2022-11-03 03:58:49,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 2898. [2022-11-03 03:58:49,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2898 states, 1794 states have (on average 1.334448160535117) internal successors, (2394), 1853 states have internal predecessors, (2394), 948 states have call successors, (948), 154 states have call predecessors, (948), 153 states have return successors, (945), 930 states have call predecessors, (945), 945 states have call successors, (945) [2022-11-03 03:58:49,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2898 states to 2898 states and 4287 transitions. [2022-11-03 03:58:49,663 INFO L78 Accepts]: Start accepts. Automaton has 2898 states and 4287 transitions. Word has length 45 [2022-11-03 03:58:49,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:58:49,663 INFO L495 AbstractCegarLoop]: Abstraction has 2898 states and 4287 transitions. [2022-11-03 03:58:49,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:58:49,664 INFO L276 IsEmpty]: Start isEmpty. Operand 2898 states and 4287 transitions. [2022-11-03 03:58:49,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 03:58:49,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:58:49,665 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:58:49,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:58:49,666 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:58:49,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:58:49,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1699766093, now seen corresponding path program 1 times [2022-11-03 03:58:49,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:58:49,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988685802] [2022-11-03 03:58:49,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:58:49,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:58:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:58:50,088 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-03 03:58:50,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:58:50,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988685802] [2022-11-03 03:58:50,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988685802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:58:50,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:58:50,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:58:50,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865026506] [2022-11-03 03:58:50,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:58:50,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:58:50,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:58:50,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:58:50,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:58:50,092 INFO L87 Difference]: Start difference. First operand 2898 states and 4287 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:58:52,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:59,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:58:59,292 INFO L93 Difference]: Finished difference Result 2904 states and 4292 transitions. [2022-11-03 03:58:59,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:58:59,293 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 51 [2022-11-03 03:58:59,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:58:59,314 INFO L225 Difference]: With dead ends: 2904 [2022-11-03 03:58:59,315 INFO L226 Difference]: Without dead ends: 2902 [2022-11-03 03:58:59,318 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 03:58:59,319 INFO L413 NwaCegarLoop]: 3780 mSDtfsCounter, 4249 mSDsluCounter, 8522 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4258 SdHoareTripleChecker+Valid, 11320 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:58:59,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4258 Valid, 11320 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1493 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-11-03 03:58:59,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2022-11-03 03:58:59,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 2902. [2022-11-03 03:58:59,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2902 states, 1797 states have (on average 1.333889816360601) internal successors, (2397), 1856 states have internal predecessors, (2397), 948 states have call successors, (948), 155 states have call predecessors, (948), 154 states have return successors, (945), 930 states have call predecessors, (945), 945 states have call successors, (945) [2022-11-03 03:58:59,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 4290 transitions. [2022-11-03 03:58:59,612 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 4290 transitions. Word has length 51 [2022-11-03 03:58:59,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:58:59,612 INFO L495 AbstractCegarLoop]: Abstraction has 2902 states and 4290 transitions. [2022-11-03 03:58:59,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:58:59,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 4290 transitions. [2022-11-03 03:58:59,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-03 03:58:59,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:58:59,615 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:58:59,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:58:59,615 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:58:59,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:58:59,616 INFO L85 PathProgramCache]: Analyzing trace with hash -824478878, now seen corresponding path program 1 times [2022-11-03 03:58:59,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:58:59,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944334328] [2022-11-03 03:58:59,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:58:59,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:58:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:00,187 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-03 03:59:00,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:00,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944334328] [2022-11-03 03:59:00,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944334328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:00,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:59:00,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:59:00,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699475998] [2022-11-03 03:59:00,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:00,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:59:00,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:00,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:59:00,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:59:00,193 INFO L87 Difference]: Start difference. First operand 2902 states and 4290 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 03:59:02,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:10,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:10,656 INFO L93 Difference]: Finished difference Result 2908 states and 4295 transitions. [2022-11-03 03:59:10,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:59:10,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 55 [2022-11-03 03:59:10,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:10,679 INFO L225 Difference]: With dead ends: 2908 [2022-11-03 03:59:10,679 INFO L226 Difference]: Without dead ends: 2906 [2022-11-03 03:59:10,683 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 03:59:10,684 INFO L413 NwaCegarLoop]: 3780 mSDtfsCounter, 4250 mSDsluCounter, 8522 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4258 SdHoareTripleChecker+Valid, 11320 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:10,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4258 Valid, 11320 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1493 Invalid, 1 Unknown, 0 Unchecked, 10.1s Time] [2022-11-03 03:59:10,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2022-11-03 03:59:10,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2906. [2022-11-03 03:59:10,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2906 states, 1800 states have (on average 1.3333333333333333) internal successors, (2400), 1859 states have internal predecessors, (2400), 948 states have call successors, (948), 156 states have call predecessors, (948), 155 states have return successors, (945), 930 states have call predecessors, (945), 945 states have call successors, (945) [2022-11-03 03:59:10,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2906 states to 2906 states and 4293 transitions. [2022-11-03 03:59:10,980 INFO L78 Accepts]: Start accepts. Automaton has 2906 states and 4293 transitions. Word has length 55 [2022-11-03 03:59:10,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:10,981 INFO L495 AbstractCegarLoop]: Abstraction has 2906 states and 4293 transitions. [2022-11-03 03:59:10,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 03:59:10,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2906 states and 4293 transitions. [2022-11-03 03:59:10,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 03:59:10,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:10,984 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:59:10,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:59:10,985 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:59:10,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:10,985 INFO L85 PathProgramCache]: Analyzing trace with hash -322198605, now seen corresponding path program 1 times [2022-11-03 03:59:10,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:10,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884671174] [2022-11-03 03:59:10,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:10,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:11,568 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-03 03:59:11,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:11,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884671174] [2022-11-03 03:59:11,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884671174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:11,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:59:11,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:59:11,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256681906] [2022-11-03 03:59:11,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:11,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:59:11,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:11,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:59:11,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:59:11,571 INFO L87 Difference]: Start difference. First operand 2906 states and 4293 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:59:13,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:21,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:21,902 INFO L93 Difference]: Finished difference Result 2912 states and 4298 transitions. [2022-11-03 03:59:21,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:59:21,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 61 [2022-11-03 03:59:21,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:21,923 INFO L225 Difference]: With dead ends: 2912 [2022-11-03 03:59:21,923 INFO L226 Difference]: Without dead ends: 2910 [2022-11-03 03:59:21,926 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 03:59:21,927 INFO L413 NwaCegarLoop]: 3780 mSDtfsCounter, 4249 mSDsluCounter, 8522 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4256 SdHoareTripleChecker+Valid, 11320 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:21,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4256 Valid, 11320 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1493 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2022-11-03 03:59:21,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2022-11-03 03:59:22,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2910. [2022-11-03 03:59:22,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2910 states, 1803 states have (on average 1.3327787021630615) internal successors, (2403), 1862 states have internal predecessors, (2403), 948 states have call successors, (948), 157 states have call predecessors, (948), 156 states have return successors, (945), 930 states have call predecessors, (945), 945 states have call successors, (945) [2022-11-03 03:59:22,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 4296 transitions. [2022-11-03 03:59:22,164 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 4296 transitions. Word has length 61 [2022-11-03 03:59:22,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:22,165 INFO L495 AbstractCegarLoop]: Abstraction has 2910 states and 4296 transitions. [2022-11-03 03:59:22,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:59:22,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 4296 transitions. [2022-11-03 03:59:22,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 03:59:22,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:22,167 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:59:22,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:59:22,167 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 03:59:22,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:22,168 INFO L85 PathProgramCache]: Analyzing trace with hash -949433147, now seen corresponding path program 1 times [2022-11-03 03:59:22,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:22,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618517041] [2022-11-03 03:59:22,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:22,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:22,759 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-03 03:59:22,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:22,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618517041] [2022-11-03 03:59:22,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618517041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:22,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:59:22,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:59:22,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176836959] [2022-11-03 03:59:22,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:22,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:59:22,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:22,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:59:22,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:59:22,762 INFO L87 Difference]: Start difference. First operand 2910 states and 4296 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 03:59:24,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:32,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:32,902 INFO L93 Difference]: Finished difference Result 2916 states and 4301 transitions. [2022-11-03 03:59:32,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:59:32,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 66 [2022-11-03 03:59:32,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:32,919 INFO L225 Difference]: With dead ends: 2916 [2022-11-03 03:59:32,920 INFO L226 Difference]: Without dead ends: 2914 [2022-11-03 03:59:32,922 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 03:59:32,923 INFO L413 NwaCegarLoop]: 3780 mSDtfsCounter, 4249 mSDsluCounter, 8522 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4255 SdHoareTripleChecker+Valid, 11320 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:32,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4255 Valid, 11320 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1493 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2022-11-03 03:59:32,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2022-11-03 03:59:33,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 2914. [2022-11-03 03:59:33,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2914 states, 1806 states have (on average 1.3322259136212624) internal successors, (2406), 1865 states have internal predecessors, (2406), 948 states have call successors, (948), 158 states have call predecessors, (948), 157 states have return successors, (945), 930 states have call predecessors, (945), 945 states have call successors, (945) [2022-11-03 03:59:33,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2914 states to 2914 states and 4299 transitions. [2022-11-03 03:59:33,166 INFO L78 Accepts]: Start accepts. Automaton has 2914 states and 4299 transitions. Word has length 66 [2022-11-03 03:59:33,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:33,167 INFO L495 AbstractCegarLoop]: Abstraction has 2914 states and 4299 transitions. [2022-11-03 03:59:33,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 03:59:33,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 4299 transitions. [2022-11-03 03:59:33,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 03:59:33,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:33,171 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:59:33,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:59:33,172 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 03:59:33,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:33,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1153391114, now seen corresponding path program 1 times [2022-11-03 03:59:33,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:33,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261366406] [2022-11-03 03:59:33,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:33,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 03:59:33,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:33,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261366406] [2022-11-03 03:59:33,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261366406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:33,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:59:33,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:59:33,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128229452] [2022-11-03 03:59:33,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:33,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:59:33,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:33,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:59:33,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:59:33,643 INFO L87 Difference]: Start difference. First operand 2914 states and 4299 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 03:59:35,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:43,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:43,755 INFO L93 Difference]: Finished difference Result 3130 states and 4561 transitions. [2022-11-03 03:59:43,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:59:43,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2022-11-03 03:59:43,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:43,776 INFO L225 Difference]: With dead ends: 3130 [2022-11-03 03:59:43,776 INFO L226 Difference]: Without dead ends: 3128 [2022-11-03 03:59:43,778 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 03:59:43,779 INFO L413 NwaCegarLoop]: 3884 mSDtfsCounter, 4032 mSDsluCounter, 9209 mSDsCounter, 0 mSdLazyCounter, 1570 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4037 SdHoareTripleChecker+Valid, 12039 SdHoareTripleChecker+Invalid, 1573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1570 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:43,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4037 Valid, 12039 Invalid, 1573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1570 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2022-11-03 03:59:43,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2022-11-03 03:59:44,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 3122. [2022-11-03 03:59:44,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3122 states, 1925 states have (on average 1.324155844155844) internal successors, (2549), 1991 states have internal predecessors, (2549), 1004 states have call successors, (1004), 194 states have call predecessors, (1004), 190 states have return successors, (1002), 980 states have call predecessors, (1002), 1001 states have call successors, (1002) [2022-11-03 03:59:44,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3122 states to 3122 states and 4555 transitions. [2022-11-03 03:59:44,051 INFO L78 Accepts]: Start accepts. Automaton has 3122 states and 4555 transitions. Word has length 70 [2022-11-03 03:59:44,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:44,052 INFO L495 AbstractCegarLoop]: Abstraction has 3122 states and 4555 transitions. [2022-11-03 03:59:44,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 03:59:44,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3122 states and 4555 transitions. [2022-11-03 03:59:44,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-03 03:59:44,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:44,055 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:59:44,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:59:44,055 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 03:59:44,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:44,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1772885022, now seen corresponding path program 1 times [2022-11-03 03:59:44,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:44,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512598105] [2022-11-03 03:59:44,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:44,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:44,480 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-03 03:59:44,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:44,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512598105] [2022-11-03 03:59:44,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512598105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:44,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:59:44,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:59:44,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721734412] [2022-11-03 03:59:44,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:44,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:59:44,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:44,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:59:44,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:59:44,484 INFO L87 Difference]: Start difference. First operand 3122 states and 4555 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 03:59:46,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:55,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:55,155 INFO L93 Difference]: Finished difference Result 3128 states and 4560 transitions. [2022-11-03 03:59:55,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:59:55,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 75 [2022-11-03 03:59:55,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:55,176 INFO L225 Difference]: With dead ends: 3128 [2022-11-03 03:59:55,176 INFO L226 Difference]: Without dead ends: 3126 [2022-11-03 03:59:55,178 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 03:59:55,179 INFO L413 NwaCegarLoop]: 3780 mSDtfsCounter, 4250 mSDsluCounter, 8522 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4254 SdHoareTripleChecker+Valid, 11320 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:55,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4254 Valid, 11320 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1493 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2022-11-03 03:59:55,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2022-11-03 03:59:55,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 3126. [2022-11-03 03:59:55,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3126 states, 1928 states have (on average 1.3236514522821576) internal successors, (2552), 1994 states have internal predecessors, (2552), 1004 states have call successors, (1004), 195 states have call predecessors, (1004), 191 states have return successors, (1002), 980 states have call predecessors, (1002), 1001 states have call successors, (1002) [2022-11-03 03:59:55,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3126 states to 3126 states and 4558 transitions. [2022-11-03 03:59:55,605 INFO L78 Accepts]: Start accepts. Automaton has 3126 states and 4558 transitions. Word has length 75 [2022-11-03 03:59:55,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:55,606 INFO L495 AbstractCegarLoop]: Abstraction has 3126 states and 4558 transitions. [2022-11-03 03:59:55,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 03:59:55,607 INFO L276 IsEmpty]: Start isEmpty. Operand 3126 states and 4558 transitions. [2022-11-03 03:59:55,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-03 03:59:55,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:55,608 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:59:55,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:59:55,609 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 03:59:55,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:55,614 INFO L85 PathProgramCache]: Analyzing trace with hash -101353037, now seen corresponding path program 1 times [2022-11-03 03:59:55,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:55,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381317613] [2022-11-03 03:59:55,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:55,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:56,060 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-03 03:59:56,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:56,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381317613] [2022-11-03 03:59:56,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381317613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:56,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:59:56,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:59:56,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689967640] [2022-11-03 03:59:56,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:56,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:59:56,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:56,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:59:56,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:59:56,063 INFO L87 Difference]: Start difference. First operand 3126 states and 4558 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 03:59:58,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:05,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:05,561 INFO L93 Difference]: Finished difference Result 3132 states and 4563 transitions. [2022-11-03 04:00:05,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:00:05,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 81 [2022-11-03 04:00:05,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:05,580 INFO L225 Difference]: With dead ends: 3132 [2022-11-03 04:00:05,580 INFO L226 Difference]: Without dead ends: 3130 [2022-11-03 04:00:05,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:00:05,584 INFO L413 NwaCegarLoop]: 3780 mSDtfsCounter, 4249 mSDsluCounter, 8522 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4252 SdHoareTripleChecker+Valid, 11320 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:05,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4252 Valid, 11320 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1493 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2022-11-03 04:00:05,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3130 states. [2022-11-03 04:00:05,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3130 to 3130. [2022-11-03 04:00:05,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3130 states, 1931 states have (on average 1.3231486276540652) internal successors, (2555), 1997 states have internal predecessors, (2555), 1004 states have call successors, (1004), 196 states have call predecessors, (1004), 192 states have return successors, (1002), 980 states have call predecessors, (1002), 1001 states have call successors, (1002) [2022-11-03 04:00:05,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3130 states to 3130 states and 4561 transitions. [2022-11-03 04:00:05,882 INFO L78 Accepts]: Start accepts. Automaton has 3130 states and 4561 transitions. Word has length 81 [2022-11-03 04:00:05,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:05,883 INFO L495 AbstractCegarLoop]: Abstraction has 3130 states and 4561 transitions. [2022-11-03 04:00:05,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 04:00:05,883 INFO L276 IsEmpty]: Start isEmpty. Operand 3130 states and 4561 transitions. [2022-11-03 04:00:05,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-03 04:00:05,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:05,885 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:05,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 04:00:05,885 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:00:05,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:05,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1474770978, now seen corresponding path program 1 times [2022-11-03 04:00:05,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:05,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059311592] [2022-11-03 04:00:05,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:05,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:06,312 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-03 04:00:06,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:06,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059311592] [2022-11-03 04:00:06,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059311592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:06,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:06,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:00:06,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941909685] [2022-11-03 04:00:06,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:06,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:00:06,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:06,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:00:06,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:00:06,315 INFO L87 Difference]: Start difference. First operand 3130 states and 4561 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 04:00:08,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:15,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:15,583 INFO L93 Difference]: Finished difference Result 3136 states and 4566 transitions. [2022-11-03 04:00:15,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:00:15,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 85 [2022-11-03 04:00:15,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:15,598 INFO L225 Difference]: With dead ends: 3136 [2022-11-03 04:00:15,598 INFO L226 Difference]: Without dead ends: 3134 [2022-11-03 04:00:15,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:00:15,601 INFO L413 NwaCegarLoop]: 3780 mSDtfsCounter, 4250 mSDsluCounter, 8522 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4252 SdHoareTripleChecker+Valid, 11320 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:15,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4252 Valid, 11320 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1493 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2022-11-03 04:00:15,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2022-11-03 04:00:15,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 3134. [2022-11-03 04:00:15,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3134 states, 1934 states have (on average 1.3226473629782833) internal successors, (2558), 2000 states have internal predecessors, (2558), 1004 states have call successors, (1004), 197 states have call predecessors, (1004), 193 states have return successors, (1002), 980 states have call predecessors, (1002), 1001 states have call successors, (1002) [2022-11-03 04:00:15,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3134 states to 3134 states and 4564 transitions. [2022-11-03 04:00:15,892 INFO L78 Accepts]: Start accepts. Automaton has 3134 states and 4564 transitions. Word has length 85 [2022-11-03 04:00:15,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:15,893 INFO L495 AbstractCegarLoop]: Abstraction has 3134 states and 4564 transitions. [2022-11-03 04:00:15,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 04:00:15,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3134 states and 4564 transitions. [2022-11-03 04:00:15,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-03 04:00:15,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:15,895 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:15,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 04:00:15,895 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:00:15,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:15,896 INFO L85 PathProgramCache]: Analyzing trace with hash -55882573, now seen corresponding path program 1 times [2022-11-03 04:00:15,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:15,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884559297] [2022-11-03 04:00:15,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:15,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:16,288 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-03 04:00:16,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:16,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884559297] [2022-11-03 04:00:16,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884559297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:16,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:16,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:00:16,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751144199] [2022-11-03 04:00:16,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:16,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:00:16,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:16,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:00:16,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:00:16,291 INFO L87 Difference]: Start difference. First operand 3134 states and 4564 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 04:00:18,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:26,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:26,062 INFO L93 Difference]: Finished difference Result 3140 states and 4569 transitions. [2022-11-03 04:00:26,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:00:26,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 91 [2022-11-03 04:00:26,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:26,076 INFO L225 Difference]: With dead ends: 3140 [2022-11-03 04:00:26,077 INFO L226 Difference]: Without dead ends: 3136 [2022-11-03 04:00:26,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:00:26,079 INFO L413 NwaCegarLoop]: 3780 mSDtfsCounter, 4249 mSDsluCounter, 8522 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4250 SdHoareTripleChecker+Valid, 11320 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:26,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4250 Valid, 11320 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1493 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2022-11-03 04:00:26,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3136 states. [2022-11-03 04:00:26,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3136 to 3136. [2022-11-03 04:00:26,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3136 states, 1936 states have (on average 1.321797520661157) internal successors, (2559), 2001 states have internal predecessors, (2559), 1004 states have call successors, (1004), 198 states have call predecessors, (1004), 193 states have return successors, (1002), 980 states have call predecessors, (1002), 1001 states have call successors, (1002) [2022-11-03 04:00:26,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3136 states to 3136 states and 4565 transitions. [2022-11-03 04:00:26,323 INFO L78 Accepts]: Start accepts. Automaton has 3136 states and 4565 transitions. Word has length 91 [2022-11-03 04:00:26,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:26,325 INFO L495 AbstractCegarLoop]: Abstraction has 3136 states and 4565 transitions. [2022-11-03 04:00:26,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 04:00:26,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3136 states and 4565 transitions. [2022-11-03 04:00:26,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-03 04:00:26,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:26,328 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:26,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 04:00:26,328 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:00:26,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:26,329 INFO L85 PathProgramCache]: Analyzing trace with hash 781800005, now seen corresponding path program 1 times [2022-11-03 04:00:26,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:26,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740142097] [2022-11-03 04:00:26,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:26,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:26,797 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-11-03 04:00:26,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:26,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740142097] [2022-11-03 04:00:26,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740142097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:26,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:26,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:00:26,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999172639] [2022-11-03 04:00:26,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:26,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:00:26,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:26,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:00:26,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:00:26,800 INFO L87 Difference]: Start difference. First operand 3136 states and 4565 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 04:00:28,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:36,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:36,032 INFO L93 Difference]: Finished difference Result 3136 states and 4565 transitions. [2022-11-03 04:00:36,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:00:36,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 96 [2022-11-03 04:00:36,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:36,042 INFO L225 Difference]: With dead ends: 3136 [2022-11-03 04:00:36,042 INFO L226 Difference]: Without dead ends: 3054 [2022-11-03 04:00:36,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:00:36,044 INFO L413 NwaCegarLoop]: 3778 mSDtfsCounter, 4245 mSDsluCounter, 8521 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4245 SdHoareTripleChecker+Valid, 11317 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:36,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4245 Valid, 11317 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1488 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-11-03 04:00:36,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3054 states. [2022-11-03 04:00:36,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3054 to 3054. [2022-11-03 04:00:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3054 states, 1889 states have (on average 1.328215987294865) internal successors, (2509), 1952 states have internal predecessors, (2509), 982 states have call successors, (982), 184 states have call predecessors, (982), 181 states have return successors, (983), 961 states have call predecessors, (983), 982 states have call successors, (983) [2022-11-03 04:00:36,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3054 states to 3054 states and 4474 transitions. [2022-11-03 04:00:36,367 INFO L78 Accepts]: Start accepts. Automaton has 3054 states and 4474 transitions. Word has length 96 [2022-11-03 04:00:36,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:36,367 INFO L495 AbstractCegarLoop]: Abstraction has 3054 states and 4474 transitions. [2022-11-03 04:00:36,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 04:00:36,367 INFO L276 IsEmpty]: Start isEmpty. Operand 3054 states and 4474 transitions. [2022-11-03 04:00:36,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-03 04:00:36,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:36,376 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:36,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 04:00:36,376 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:00:36,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:36,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1117993039, now seen corresponding path program 1 times [2022-11-03 04:00:36,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:36,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498116297] [2022-11-03 04:00:36,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:36,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:36,703 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-03 04:00:36,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:36,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498116297] [2022-11-03 04:00:36,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498116297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:36,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:36,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:00:36,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264112951] [2022-11-03 04:00:36,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:36,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:00:36,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:36,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:00:36,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:00:36,706 INFO L87 Difference]: Start difference. First operand 3054 states and 4474 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-03 04:00:38,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:41,348 WARN L539 Checker$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 04:00:44,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:44,004 INFO L93 Difference]: Finished difference Result 6095 states and 8928 transitions. [2022-11-03 04:00:44,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:00:44,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 143 [2022-11-03 04:00:44,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:44,017 INFO L225 Difference]: With dead ends: 6095 [2022-11-03 04:00:44,017 INFO L226 Difference]: Without dead ends: 3055 [2022-11-03 04:00:44,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:00:44,034 INFO L413 NwaCegarLoop]: 3725 mSDtfsCounter, 4194 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4196 SdHoareTripleChecker+Valid, 3729 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:44,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4196 Valid, 3729 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 490 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2022-11-03 04:00:44,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2022-11-03 04:00:44,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 3053. [2022-11-03 04:00:44,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3053 states, 1888 states have (on average 1.3273305084745763) internal successors, (2506), 1951 states have internal predecessors, (2506), 982 states have call successors, (982), 184 states have call predecessors, (982), 181 states have return successors, (983), 961 states have call predecessors, (983), 982 states have call successors, (983) [2022-11-03 04:00:44,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 4471 transitions. [2022-11-03 04:00:44,384 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 4471 transitions. Word has length 143 [2022-11-03 04:00:44,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:44,385 INFO L495 AbstractCegarLoop]: Abstraction has 3053 states and 4471 transitions. [2022-11-03 04:00:44,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-03 04:00:44,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 4471 transitions. [2022-11-03 04:00:44,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-03 04:00:44,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:44,394 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:44,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 04:00:44,394 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:00:44,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:44,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1052799301, now seen corresponding path program 1 times [2022-11-03 04:00:44,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:44,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875424918] [2022-11-03 04:00:44,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:44,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:45,501 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-03 04:00:45,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:45,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875424918] [2022-11-03 04:00:45,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875424918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:45,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:45,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:00:45,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744305716] [2022-11-03 04:00:45,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:45,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:00:45,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:45,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:00:45,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:00:45,504 INFO L87 Difference]: Start difference. First operand 3053 states and 4471 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 04:00:47,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:55,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:55,869 INFO L93 Difference]: Finished difference Result 3059 states and 4475 transitions. [2022-11-03 04:00:55,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:00:55,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 144 [2022-11-03 04:00:55,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:55,882 INFO L225 Difference]: With dead ends: 3059 [2022-11-03 04:00:55,882 INFO L226 Difference]: Without dead ends: 3057 [2022-11-03 04:00:55,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:00:55,885 INFO L413 NwaCegarLoop]: 3825 mSDtfsCounter, 3933 mSDsluCounter, 9101 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3934 SdHoareTripleChecker+Valid, 11880 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:55,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3934 Valid, 11880 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1547 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2022-11-03 04:00:55,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2022-11-03 04:00:56,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 3053. [2022-11-03 04:00:56,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3053 states, 1888 states have (on average 1.3268008474576272) internal successors, (2505), 1951 states have internal predecessors, (2505), 982 states have call successors, (982), 184 states have call predecessors, (982), 181 states have return successors, (983), 961 states have call predecessors, (983), 982 states have call successors, (983) [2022-11-03 04:00:56,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 4470 transitions. [2022-11-03 04:00:56,237 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 4470 transitions. Word has length 144 [2022-11-03 04:00:56,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:56,237 INFO L495 AbstractCegarLoop]: Abstraction has 3053 states and 4470 transitions. [2022-11-03 04:00:56,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 04:00:56,238 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 4470 transitions. [2022-11-03 04:00:56,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 04:00:56,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:56,258 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:56,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 04:00:56,258 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:00:56,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:56,259 INFO L85 PathProgramCache]: Analyzing trace with hash 889120792, now seen corresponding path program 1 times [2022-11-03 04:00:56,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:56,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095006161] [2022-11-03 04:00:56,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:56,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:57,084 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-11-03 04:00:57,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:57,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095006161] [2022-11-03 04:00:57,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095006161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:57,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:57,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:00:57,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71469922] [2022-11-03 04:00:57,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:57,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:00:57,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:57,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:00:57,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:00:57,086 INFO L87 Difference]: Start difference. First operand 3053 states and 4470 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 04:00:59,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:09,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:09,285 INFO L93 Difference]: Finished difference Result 3057 states and 4473 transitions. [2022-11-03 04:01:09,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:01:09,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 182 [2022-11-03 04:01:09,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:09,302 INFO L225 Difference]: With dead ends: 3057 [2022-11-03 04:01:09,302 INFO L226 Difference]: Without dead ends: 3055 [2022-11-03 04:01:09,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:01:09,306 INFO L413 NwaCegarLoop]: 3891 mSDtfsCounter, 462 mSDsluCounter, 12819 mSDsCounter, 0 mSdLazyCounter, 2042 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 15202 SdHoareTripleChecker+Invalid, 2044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2042 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:09,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 15202 Invalid, 2044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2042 Invalid, 1 Unknown, 0 Unchecked, 11.8s Time] [2022-11-03 04:01:09,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2022-11-03 04:01:09,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 3053. [2022-11-03 04:01:09,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3053 states, 1888 states have (on average 1.326271186440678) internal successors, (2504), 1951 states have internal predecessors, (2504), 982 states have call successors, (982), 184 states have call predecessors, (982), 181 states have return successors, (983), 961 states have call predecessors, (983), 982 states have call successors, (983) [2022-11-03 04:01:09,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 4469 transitions. [2022-11-03 04:01:09,664 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 4469 transitions. Word has length 182 [2022-11-03 04:01:09,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:09,665 INFO L495 AbstractCegarLoop]: Abstraction has 3053 states and 4469 transitions. [2022-11-03 04:01:09,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 04:01:09,665 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 4469 transitions. [2022-11-03 04:01:09,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2022-11-03 04:01:09,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:09,707 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 14, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:09,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 04:01:09,707 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:01:09,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:09,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1927555673, now seen corresponding path program 1 times [2022-11-03 04:01:09,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:09,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854464072] [2022-11-03 04:01:09,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:09,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:10,623 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 04:01:10,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [450029300] [2022-11-03 04:01:10,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:10,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:10,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:01:10,629 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:01:10,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 04:01:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:14,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 8821 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 04:01:14,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:14,530 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 379 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2022-11-03 04:01:14,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:14,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:14,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854464072] [2022-11-03 04:01:14,531 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 04:01:14,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450029300] [2022-11-03 04:01:14,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450029300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:14,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:14,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:01:14,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145445145] [2022-11-03 04:01:14,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:14,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:01:14,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:14,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:01:14,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:01:14,535 INFO L87 Difference]: Start difference. First operand 3053 states and 4469 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-11-03 04:01:16,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:22,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:22,153 INFO L93 Difference]: Finished difference Result 6095 states and 9030 transitions. [2022-11-03 04:01:22,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:01:22,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 468 [2022-11-03 04:01:22,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:22,177 INFO L225 Difference]: With dead ends: 6095 [2022-11-03 04:01:22,177 INFO L226 Difference]: Without dead ends: 3056 [2022-11-03 04:01:22,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:01:22,198 INFO L413 NwaCegarLoop]: 3724 mSDtfsCounter, 0 mSDsluCounter, 4202 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7442 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:22,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7442 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 977 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-03 04:01:22,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3056 states. [2022-11-03 04:01:22,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3056 to 3056. [2022-11-03 04:01:22,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3056 states, 1891 states have (on average 1.325753569539926) internal successors, (2507), 1954 states have internal predecessors, (2507), 982 states have call successors, (982), 184 states have call predecessors, (982), 181 states have return successors, (983), 961 states have call predecessors, (983), 982 states have call successors, (983) [2022-11-03 04:01:22,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3056 states to 3056 states and 4472 transitions. [2022-11-03 04:01:22,552 INFO L78 Accepts]: Start accepts. Automaton has 3056 states and 4472 transitions. Word has length 468 [2022-11-03 04:01:22,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:22,554 INFO L495 AbstractCegarLoop]: Abstraction has 3056 states and 4472 transitions. [2022-11-03 04:01:22,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-11-03 04:01:22,555 INFO L276 IsEmpty]: Start isEmpty. Operand 3056 states and 4472 transitions. [2022-11-03 04:01:22,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2022-11-03 04:01:22,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:22,595 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:22,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:22,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-03 04:01:22,821 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:01:22,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:22,822 INFO L85 PathProgramCache]: Analyzing trace with hash 633120216, now seen corresponding path program 1 times [2022-11-03 04:01:22,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:22,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975555785] [2022-11-03 04:01:22,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:22,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:23,670 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 04:01:23,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [152522862] [2022-11-03 04:01:23,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:23,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:23,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:01:23,672 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:01:23,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 04:01:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:27,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 9050 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 04:01:27,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:27,917 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2022-11-03 04:01:27,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:27,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:27,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975555785] [2022-11-03 04:01:27,924 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 04:01:27,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152522862] [2022-11-03 04:01:27,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152522862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:27,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:27,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:01:27,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953270497] [2022-11-03 04:01:27,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:27,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:01:27,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:27,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:01:27,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:01:27,931 INFO L87 Difference]: Start difference. First operand 3056 states and 4472 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 2 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2022-11-03 04:01:29,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:36,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:36,844 INFO L93 Difference]: Finished difference Result 6221 states and 9198 transitions. [2022-11-03 04:01:36,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:01:36,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 2 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) Word has length 489 [2022-11-03 04:01:36,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:36,861 INFO L225 Difference]: With dead ends: 6221 [2022-11-03 04:01:36,861 INFO L226 Difference]: Without dead ends: 3179 [2022-11-03 04:01:36,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:01:36,881 INFO L413 NwaCegarLoop]: 3781 mSDtfsCounter, 99 mSDsluCounter, 4217 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 7513 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:36,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 7513 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 981 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2022-11-03 04:01:36,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2022-11-03 04:01:37,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 3057. [2022-11-03 04:01:37,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3057 states, 1892 states have (on average 1.3255813953488371) internal successors, (2508), 1955 states have internal predecessors, (2508), 982 states have call successors, (982), 184 states have call predecessors, (982), 181 states have return successors, (983), 961 states have call predecessors, (983), 982 states have call successors, (983) [2022-11-03 04:01:37,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3057 states to 3057 states and 4473 transitions. [2022-11-03 04:01:37,377 INFO L78 Accepts]: Start accepts. Automaton has 3057 states and 4473 transitions. Word has length 489 [2022-11-03 04:01:37,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:37,378 INFO L495 AbstractCegarLoop]: Abstraction has 3057 states and 4473 transitions. [2022-11-03 04:01:37,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 2 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2022-11-03 04:01:37,378 INFO L276 IsEmpty]: Start isEmpty. Operand 3057 states and 4473 transitions. [2022-11-03 04:01:37,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2022-11-03 04:01:37,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:37,411 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 8, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:37,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:37,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-03 04:01:37,637 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:01:37,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:37,638 INFO L85 PathProgramCache]: Analyzing trace with hash 173708311, now seen corresponding path program 1 times [2022-11-03 04:01:37,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:37,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180166457] [2022-11-03 04:01:37,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:37,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:38,467 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 04:01:38,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453592824] [2022-11-03 04:01:38,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:38,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:38,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:01:38,469 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:01:38,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 04:01:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:42,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 9083 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:01:42,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:42,802 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-11-03 04:01:42,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:42,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:42,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180166457] [2022-11-03 04:01:42,803 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 04:01:42,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453592824] [2022-11-03 04:01:42,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453592824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:42,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:42,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:01:42,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121687691] [2022-11-03 04:01:42,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:42,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:01:42,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:42,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:01:42,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:01:42,806 INFO L87 Difference]: Start difference. First operand 3057 states and 4473 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 3 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (94), 3 states have call predecessors, (94), 3 states have call successors, (94) [2022-11-03 04:01:44,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:50,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:50,874 INFO L93 Difference]: Finished difference Result 6106 states and 9029 transitions. [2022-11-03 04:01:50,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:01:50,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 3 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (94), 3 states have call predecessors, (94), 3 states have call successors, (94) Word has length 498 [2022-11-03 04:01:50,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:50,891 INFO L225 Difference]: With dead ends: 6106 [2022-11-03 04:01:50,891 INFO L226 Difference]: Without dead ends: 3063 [2022-11-03 04:01:50,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 496 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:01:50,908 INFO L413 NwaCegarLoop]: 3724 mSDtfsCounter, 4 mSDsluCounter, 4203 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7441 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:50,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 7441 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 981 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2022-11-03 04:01:50,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3063 states. [2022-11-03 04:01:51,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3063 to 3061. [2022-11-03 04:01:51,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3061 states, 1895 states have (on average 1.3255936675461741) internal successors, (2512), 1958 states have internal predecessors, (2512), 983 states have call successors, (983), 184 states have call predecessors, (983), 181 states have return successors, (984), 962 states have call predecessors, (984), 983 states have call successors, (984) [2022-11-03 04:01:51,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3061 states to 3061 states and 4479 transitions. [2022-11-03 04:01:51,272 INFO L78 Accepts]: Start accepts. Automaton has 3061 states and 4479 transitions. Word has length 498 [2022-11-03 04:01:51,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:51,273 INFO L495 AbstractCegarLoop]: Abstraction has 3061 states and 4479 transitions. [2022-11-03 04:01:51,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 3 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (94), 3 states have call predecessors, (94), 3 states have call successors, (94) [2022-11-03 04:01:51,273 INFO L276 IsEmpty]: Start isEmpty. Operand 3061 states and 4479 transitions. [2022-11-03 04:01:51,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2022-11-03 04:01:51,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:51,306 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 14, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:01:51,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:51,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:51,529 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:01:51,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:51,530 INFO L85 PathProgramCache]: Analyzing trace with hash 664969750, now seen corresponding path program 1 times [2022-11-03 04:01:51,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:51,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880940940] [2022-11-03 04:01:51,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:51,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:52,275 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 04:01:52,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [236027993] [2022-11-03 04:01:52,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:52,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:52,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:01:52,277 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:01:52,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 04:01:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:56,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 8887 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:01:56,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:56,940 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 395 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2022-11-03 04:01:56,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:56,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:56,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880940940] [2022-11-03 04:01:56,941 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 04:01:56,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236027993] [2022-11-03 04:01:56,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236027993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:56,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:01:56,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:01:56,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133257861] [2022-11-03 04:01:56,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:56,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:01:56,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:56,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:01:56,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:01:56,944 INFO L87 Difference]: Start difference. First operand 3061 states and 4479 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 2 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2022-11-03 04:01:58,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:04,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:04,785 INFO L93 Difference]: Finished difference Result 6107 states and 9030 transitions. [2022-11-03 04:02:04,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:02:04,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 2 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) Word has length 482 [2022-11-03 04:02:04,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:04,797 INFO L225 Difference]: With dead ends: 6107 [2022-11-03 04:02:04,797 INFO L226 Difference]: Without dead ends: 3060 [2022-11-03 04:02:04,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:02:04,814 INFO L413 NwaCegarLoop]: 3724 mSDtfsCounter, 1 mSDsluCounter, 4199 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7439 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:04,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7439 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 983 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2022-11-03 04:02:04,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2022-11-03 04:02:05,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 3058. [2022-11-03 04:02:05,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3058 states, 1893 states have (on average 1.3254094030639196) internal successors, (2509), 1956 states have internal predecessors, (2509), 982 states have call successors, (982), 184 states have call predecessors, (982), 181 states have return successors, (983), 961 states have call predecessors, (983), 982 states have call successors, (983) [2022-11-03 04:02:05,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3058 states to 3058 states and 4474 transitions. [2022-11-03 04:02:05,308 INFO L78 Accepts]: Start accepts. Automaton has 3058 states and 4474 transitions. Word has length 482 [2022-11-03 04:02:05,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:05,309 INFO L495 AbstractCegarLoop]: Abstraction has 3058 states and 4474 transitions. [2022-11-03 04:02:05,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 2 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2022-11-03 04:02:05,309 INFO L276 IsEmpty]: Start isEmpty. Operand 3058 states and 4474 transitions. [2022-11-03 04:02:05,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2022-11-03 04:02:05,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:05,338 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 8, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:05,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 04:02:05,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:02:05,554 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:02:05,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:05,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1430801191, now seen corresponding path program 1 times [2022-11-03 04:02:05,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:02:05,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463587316] [2022-11-03 04:02:05,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:05,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:02:06,365 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 04:02:06,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [623321005] [2022-11-03 04:02:06,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:06,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:02:06,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:02:06,367 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:02:06,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 04:02:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:11,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 9096 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:02:11,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:02:11,125 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 424 proven. 1 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2022-11-03 04:02:11,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:02:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2022-11-03 04:02:11,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:02:11,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463587316] [2022-11-03 04:02:11,888 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 04:02:11,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623321005] [2022-11-03 04:02:11,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623321005] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:02:11,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1810552410] [2022-11-03 04:02:11,918 INFO L159 IcfgInterpreter]: Started Sifa with 319 locations of interest [2022-11-03 04:02:11,919 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:02:11,924 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 04:02:11,927 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:02:11,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-03 04:02:11,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614017692] [2022-11-03 04:02:11,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 04:02:11,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:02:11,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:02:11,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:02:11,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:02:11,930 INFO L87 Difference]: Start difference. First operand 3058 states and 4474 transitions. Second operand has 6 states, 6 states have (on average 45.166666666666664) internal successors, (271), 6 states have internal predecessors, (271), 2 states have call successors, (154), 2 states have call predecessors, (154), 2 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2022-11-03 04:02:13,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:23,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:23,273 INFO L93 Difference]: Finished difference Result 6111 states and 9052 transitions. [2022-11-03 04:02:23,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:02:23,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 45.166666666666664) internal successors, (271), 6 states have internal predecessors, (271), 2 states have call successors, (154), 2 states have call predecessors, (154), 2 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) Word has length 503 [2022-11-03 04:02:23,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:23,292 INFO L225 Difference]: With dead ends: 6111 [2022-11-03 04:02:23,292 INFO L226 Difference]: Without dead ends: 3067 [2022-11-03 04:02:23,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1004 GetRequests, 1000 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:02:23,316 INFO L413 NwaCegarLoop]: 3724 mSDtfsCounter, 0 mSDsluCounter, 8404 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11160 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:23,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11160 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1473 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2022-11-03 04:02:23,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3067 states. [2022-11-03 04:02:23,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3067 to 3067. [2022-11-03 04:02:23,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3067 states, 1902 states have (on average 1.323869610935857) internal successors, (2518), 1965 states have internal predecessors, (2518), 982 states have call successors, (982), 184 states have call predecessors, (982), 181 states have return successors, (983), 961 states have call predecessors, (983), 982 states have call successors, (983) [2022-11-03 04:02:23,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 4483 transitions. [2022-11-03 04:02:23,685 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 4483 transitions. Word has length 503 [2022-11-03 04:02:23,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:23,685 INFO L495 AbstractCegarLoop]: Abstraction has 3067 states and 4483 transitions. [2022-11-03 04:02:23,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.166666666666664) internal successors, (271), 6 states have internal predecessors, (271), 2 states have call successors, (154), 2 states have call predecessors, (154), 2 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2022-11-03 04:02:23,686 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 4483 transitions. [2022-11-03 04:02:23,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-11-03 04:02:23,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:23,705 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 14, 8, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:23,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 04:02:23,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-03 04:02:23,933 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:02:23,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:23,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1698754518, now seen corresponding path program 1 times [2022-11-03 04:02:23,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:02:23,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870490940] [2022-11-03 04:02:23,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:23,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:02:24,858 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 04:02:24,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068687371] [2022-11-03 04:02:24,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:24,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:02:24,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:02:24,865 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:02:24,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 04:02:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:29,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 8931 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:02:29,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:02:29,908 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 389 proven. 10 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2022-11-03 04:02:29,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:02:30,681 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2022-11-03 04:02:30,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:02:30,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870490940] [2022-11-03 04:02:30,682 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 04:02:30,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068687371] [2022-11-03 04:02:30,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068687371] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:02:30,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1300370259] [2022-11-03 04:02:30,689 INFO L159 IcfgInterpreter]: Started Sifa with 310 locations of interest [2022-11-03 04:02:30,689 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:02:30,690 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 04:02:30,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:02:30,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2022-11-03 04:02:30,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736936935] [2022-11-03 04:02:30,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 04:02:30,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 04:02:30,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:02:30,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 04:02:30,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:02:30,701 INFO L87 Difference]: Start difference. First operand 3067 states and 4483 transitions. Second operand has 8 states, 8 states have (on average 32.875) internal successors, (263), 8 states have internal predecessors, (263), 2 states have call successors, (147), 2 states have call predecessors, (147), 2 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) [2022-11-03 04:02:32,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:41,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:41,834 INFO L93 Difference]: Finished difference Result 6126 states and 9064 transitions. [2022-11-03 04:02:41,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:02:41,836 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.875) internal successors, (263), 8 states have internal predecessors, (263), 2 states have call successors, (147), 2 states have call predecessors, (147), 2 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) Word has length 486 [2022-11-03 04:02:41,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:41,855 INFO L225 Difference]: With dead ends: 6126 [2022-11-03 04:02:41,855 INFO L226 Difference]: Without dead ends: 3073 [2022-11-03 04:02:41,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 960 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:02:41,874 INFO L413 NwaCegarLoop]: 3724 mSDtfsCounter, 0 mSDsluCounter, 8404 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11160 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:41,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11160 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1479 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2022-11-03 04:02:41,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3073 states. [2022-11-03 04:02:42,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3073 to 3073. [2022-11-03 04:02:42,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3073 states, 1908 states have (on average 1.3228511530398324) internal successors, (2524), 1971 states have internal predecessors, (2524), 982 states have call successors, (982), 184 states have call predecessors, (982), 181 states have return successors, (983), 961 states have call predecessors, (983), 982 states have call successors, (983) [2022-11-03 04:02:42,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3073 states to 3073 states and 4489 transitions. [2022-11-03 04:02:42,255 INFO L78 Accepts]: Start accepts. Automaton has 3073 states and 4489 transitions. Word has length 486 [2022-11-03 04:02:42,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:42,256 INFO L495 AbstractCegarLoop]: Abstraction has 3073 states and 4489 transitions. [2022-11-03 04:02:42,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.875) internal successors, (263), 8 states have internal predecessors, (263), 2 states have call successors, (147), 2 states have call predecessors, (147), 2 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) [2022-11-03 04:02:42,256 INFO L276 IsEmpty]: Start isEmpty. Operand 3073 states and 4489 transitions. [2022-11-03 04:02:42,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2022-11-03 04:02:42,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:42,278 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 8, 7, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:02:42,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 04:02:42,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:02:42,501 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 04:02:42,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:42,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1064522640, now seen corresponding path program 2 times [2022-11-03 04:02:42,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:02:42,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291541613] [2022-11-03 04:02:42,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:42,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:02:43,374 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 04:02:43,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1107082398] [2022-11-03 04:02:43,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 04:02:43,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:02:43,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:02:43,377 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:02:43,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7db826f-a4c4-4a37-8e9c-f6fb32eaa0db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process